diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7837 |
1 files changed, 7837 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c new file mode 100644 index 000000000000..58c3ffe707d1 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -0,0 +1,7837 @@ +/* + * Copyright 2008 Advanced Micro Devices, Inc. + * Copyright 2008 Red Hat Inc. + * Copyright 2009 Jerome Glisse. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Dave Airlie + * Alex Deucher + * Jerome Glisse + */ + +#include <linux/aperture.h> +#include <linux/power_supply.h> +#include <linux/kthread.h> +#include <linux/module.h> +#include <linux/console.h> +#include <linux/slab.h> +#include <linux/iommu.h> +#include <linux/pci.h> +#include <linux/pci-p2pdma.h> +#include <linux/apple-gmux.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_client_event.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_probe_helper.h> +#include <drm/amdgpu_drm.h> +#include <linux/device.h> +#include <linux/vgaarb.h> +#include <linux/vga_switcheroo.h> +#include <linux/efi.h> +#include "amdgpu.h" +#include "amdgpu_trace.h" +#include "amdgpu_i2c.h" +#include "atom.h" +#include "amdgpu_atombios.h" +#include "amdgpu_atomfirmware.h" +#include "amd_pcie.h" +#ifdef CONFIG_DRM_AMDGPU_SI +#include "si.h" +#endif +#ifdef CONFIG_DRM_AMDGPU_CIK +#include "cik.h" +#endif +#include "vi.h" +#include "soc15.h" +#include "nv.h" +#include "bif/bif_4_1_d.h" +#include <linux/firmware.h> +#include "amdgpu_vf_error.h" + +#include "amdgpu_amdkfd.h" +#include "amdgpu_pm.h" + +#include "amdgpu_xgmi.h" +#include "amdgpu_ras.h" +#include "amdgpu_ras_mgr.h" +#include "amdgpu_pmu.h" +#include "amdgpu_fru_eeprom.h" +#include "amdgpu_reset.h" +#include "amdgpu_virt.h" +#include "amdgpu_dev_coredump.h" + +#include <linux/suspend.h> +#include <drm/task_barrier.h> +#include <linux/pm_runtime.h> + +#include <drm/drm_drv.h> + +#if IS_ENABLED(CONFIG_X86) +#include <asm/intel-family.h> +#include <asm/cpu_device_id.h> +#endif + +MODULE_FIRMWARE("amdgpu/vega10_gpu_info.bin"); +MODULE_FIRMWARE("amdgpu/vega12_gpu_info.bin"); +MODULE_FIRMWARE("amdgpu/raven_gpu_info.bin"); +MODULE_FIRMWARE("amdgpu/picasso_gpu_info.bin"); +MODULE_FIRMWARE("amdgpu/raven2_gpu_info.bin"); +MODULE_FIRMWARE("amdgpu/arcturus_gpu_info.bin"); +MODULE_FIRMWARE("amdgpu/navi12_gpu_info.bin"); +MODULE_FIRMWARE("amdgpu/cyan_skillfish_gpu_info.bin"); + +#define AMDGPU_RESUME_MS 2000 +#define AMDGPU_MAX_RETRY_LIMIT 2 +#define AMDGPU_RETRY_SRIOV_RESET(r) ((r) == -EBUSY || (r) == -ETIMEDOUT || (r) == -EINVAL) +#define AMDGPU_PCIE_INDEX_FALLBACK (0x38 >> 2) +#define AMDGPU_PCIE_INDEX_HI_FALLBACK (0x44 >> 2) +#define AMDGPU_PCIE_DATA_FALLBACK (0x3C >> 2) + +#define AMDGPU_VBIOS_SKIP (1U << 0) +#define AMDGPU_VBIOS_OPTIONAL (1U << 1) + +static const struct drm_driver amdgpu_kms_driver; + +const char *amdgpu_asic_name[] = { + "TAHITI", + "PITCAIRN", + "VERDE", + "OLAND", + "HAINAN", + "BONAIRE", + "KAVERI", + "KABINI", + "HAWAII", + "MULLINS", + "TOPAZ", + "TONGA", + "FIJI", + "CARRIZO", + "STONEY", + "POLARIS10", + "POLARIS11", + "POLARIS12", + "VEGAM", + "VEGA10", + "VEGA12", + "VEGA20", + "RAVEN", + "ARCTURUS", + "RENOIR", + "ALDEBARAN", + "NAVI10", + "CYAN_SKILLFISH", + "NAVI14", + "NAVI12", + "SIENNA_CICHLID", + "NAVY_FLOUNDER", + "VANGOGH", + "DIMGREY_CAVEFISH", + "BEIGE_GOBY", + "YELLOW_CARP", + "IP DISCOVERY", + "LAST", +}; + +#define AMDGPU_IP_BLK_MASK_ALL GENMASK(AMD_IP_BLOCK_TYPE_NUM - 1, 0) +/* + * Default init level where all blocks are expected to be initialized. This is + * the level of initialization expected by default and also after a full reset + * of the device. + */ +struct amdgpu_init_level amdgpu_init_default = { + .level = AMDGPU_INIT_LEVEL_DEFAULT, + .hwini_ip_block_mask = AMDGPU_IP_BLK_MASK_ALL, +}; + +struct amdgpu_init_level amdgpu_init_recovery = { + .level = AMDGPU_INIT_LEVEL_RESET_RECOVERY, + .hwini_ip_block_mask = AMDGPU_IP_BLK_MASK_ALL, +}; + +/* + * Minimal blocks needed to be initialized before a XGMI hive can be reset. This + * is used for cases like reset on initialization where the entire hive needs to + * be reset before first use. + */ +struct amdgpu_init_level amdgpu_init_minimal_xgmi = { + .level = AMDGPU_INIT_LEVEL_MINIMAL_XGMI, + .hwini_ip_block_mask = + BIT(AMD_IP_BLOCK_TYPE_GMC) | BIT(AMD_IP_BLOCK_TYPE_SMC) | + BIT(AMD_IP_BLOCK_TYPE_COMMON) | BIT(AMD_IP_BLOCK_TYPE_IH) | + BIT(AMD_IP_BLOCK_TYPE_PSP) +}; + +static int amdgpu_device_ip_resume_phase1(struct amdgpu_device *adev); +static int amdgpu_device_ip_resume_phase2(struct amdgpu_device *adev); +static int amdgpu_device_ip_resume_phase3(struct amdgpu_device *adev); + +static void amdgpu_device_load_switch_state(struct amdgpu_device *adev); + +static inline bool amdgpu_ip_member_of_hwini(struct amdgpu_device *adev, + enum amd_ip_block_type block) +{ + return (adev->init_lvl->hwini_ip_block_mask & (1U << block)) != 0; +} + +void amdgpu_set_init_level(struct amdgpu_device *adev, + enum amdgpu_init_lvl_id lvl) +{ + switch (lvl) { + case AMDGPU_INIT_LEVEL_MINIMAL_XGMI: + adev->init_lvl = &amdgpu_init_minimal_xgmi; + break; + case AMDGPU_INIT_LEVEL_RESET_RECOVERY: + adev->init_lvl = &amdgpu_init_recovery; + break; + case AMDGPU_INIT_LEVEL_DEFAULT: + fallthrough; + default: + adev->init_lvl = &amdgpu_init_default; + break; + } +} + +static inline void amdgpu_device_stop_pending_resets(struct amdgpu_device *adev); +static int amdgpu_device_pm_notifier(struct notifier_block *nb, unsigned long mode, + void *data); + +/** + * DOC: pcie_replay_count + * + * The amdgpu driver provides a sysfs API for reporting the total number + * of PCIe replays (NAKs). + * The file pcie_replay_count is used for this and returns the total + * number of replays as a sum of the NAKs generated and NAKs received. + */ + +static ssize_t amdgpu_device_get_pcie_replay_count(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + uint64_t cnt = amdgpu_asic_get_pcie_replay_count(adev); + + return sysfs_emit(buf, "%llu\n", cnt); +} + +static DEVICE_ATTR(pcie_replay_count, 0444, + amdgpu_device_get_pcie_replay_count, NULL); + +static int amdgpu_device_attr_sysfs_init(struct amdgpu_device *adev) +{ + int ret = 0; + + if (amdgpu_nbio_is_replay_cnt_supported(adev)) + ret = sysfs_create_file(&adev->dev->kobj, + &dev_attr_pcie_replay_count.attr); + + return ret; +} + +static void amdgpu_device_attr_sysfs_fini(struct amdgpu_device *adev) +{ + if (amdgpu_nbio_is_replay_cnt_supported(adev)) + sysfs_remove_file(&adev->dev->kobj, + &dev_attr_pcie_replay_count.attr); +} + +static ssize_t amdgpu_sysfs_reg_state_get(struct file *f, struct kobject *kobj, + const struct bin_attribute *attr, char *buf, + loff_t ppos, size_t count) +{ + struct device *dev = kobj_to_dev(kobj); + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + ssize_t bytes_read; + + switch (ppos) { + case AMDGPU_SYS_REG_STATE_XGMI: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_XGMI, buf, count); + break; + case AMDGPU_SYS_REG_STATE_WAFL: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_WAFL, buf, count); + break; + case AMDGPU_SYS_REG_STATE_PCIE: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_PCIE, buf, count); + break; + case AMDGPU_SYS_REG_STATE_USR: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_USR, buf, count); + break; + case AMDGPU_SYS_REG_STATE_USR_1: + bytes_read = amdgpu_asic_get_reg_state( + adev, AMDGPU_REG_STATE_TYPE_USR_1, buf, count); + break; + default: + return -EINVAL; + } + + return bytes_read; +} + +static const BIN_ATTR(reg_state, 0444, amdgpu_sysfs_reg_state_get, NULL, + AMDGPU_SYS_REG_STATE_END); + +int amdgpu_reg_state_sysfs_init(struct amdgpu_device *adev) +{ + int ret; + + if (!amdgpu_asic_get_reg_state_supported(adev)) + return 0; + + ret = sysfs_create_bin_file(&adev->dev->kobj, &bin_attr_reg_state); + + return ret; +} + +void amdgpu_reg_state_sysfs_fini(struct amdgpu_device *adev) +{ + if (!amdgpu_asic_get_reg_state_supported(adev)) + return; + sysfs_remove_bin_file(&adev->dev->kobj, &bin_attr_reg_state); +} + +int amdgpu_ip_block_suspend(struct amdgpu_ip_block *ip_block) +{ + int r; + + if (ip_block->version->funcs->suspend) { + r = ip_block->version->funcs->suspend(ip_block); + if (r) { + dev_err(ip_block->adev->dev, + "suspend of IP block <%s> failed %d\n", + ip_block->version->funcs->name, r); + return r; + } + } + + ip_block->status.hw = false; + return 0; +} + +int amdgpu_ip_block_resume(struct amdgpu_ip_block *ip_block) +{ + int r; + + if (ip_block->version->funcs->resume) { + r = ip_block->version->funcs->resume(ip_block); + if (r) { + dev_err(ip_block->adev->dev, + "resume of IP block <%s> failed %d\n", + ip_block->version->funcs->name, r); + return r; + } + } + + ip_block->status.hw = true; + return 0; +} + +/** + * DOC: board_info + * + * The amdgpu driver provides a sysfs API for giving board related information. + * It provides the form factor information in the format + * + * type : form factor + * + * Possible form factor values + * + * - "cem" - PCIE CEM card + * - "oam" - Open Compute Accelerator Module + * - "unknown" - Not known + * + */ + +static ssize_t amdgpu_device_get_board_info(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + enum amdgpu_pkg_type pkg_type = AMDGPU_PKG_TYPE_CEM; + const char *pkg; + + if (adev->smuio.funcs && adev->smuio.funcs->get_pkg_type) + pkg_type = adev->smuio.funcs->get_pkg_type(adev); + + switch (pkg_type) { + case AMDGPU_PKG_TYPE_CEM: + pkg = "cem"; + break; + case AMDGPU_PKG_TYPE_OAM: + pkg = "oam"; + break; + default: + pkg = "unknown"; + break; + } + + return sysfs_emit(buf, "%s : %s\n", "type", pkg); +} + +static DEVICE_ATTR(board_info, 0444, amdgpu_device_get_board_info, NULL); + +static struct attribute *amdgpu_board_attrs[] = { + &dev_attr_board_info.attr, + NULL, +}; + +static umode_t amdgpu_board_attrs_is_visible(struct kobject *kobj, + struct attribute *attr, int n) +{ + struct device *dev = kobj_to_dev(kobj); + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + + if (adev->flags & AMD_IS_APU) + return 0; + + return attr->mode; +} + +static const struct attribute_group amdgpu_board_attrs_group = { + .attrs = amdgpu_board_attrs, + .is_visible = amdgpu_board_attrs_is_visible +}; + +static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev); + +/** + * amdgpu_device_supports_px - Is the device a dGPU with ATPX power control + * + * @adev: amdgpu device pointer + * + * Returns true if the device is a dGPU with ATPX power control, + * otherwise return false. + */ +bool amdgpu_device_supports_px(struct amdgpu_device *adev) +{ + if ((adev->flags & AMD_IS_PX) && !amdgpu_is_atpx_hybrid()) + return true; + return false; +} + +/** + * amdgpu_device_supports_boco - Is the device a dGPU with ACPI power resources + * + * @adev: amdgpu device pointer + * + * Returns true if the device is a dGPU with ACPI power control, + * otherwise return false. + */ +bool amdgpu_device_supports_boco(struct amdgpu_device *adev) +{ + if (!IS_ENABLED(CONFIG_HOTPLUG_PCI_PCIE)) + return false; + + if (adev->has_pr3 || + ((adev->flags & AMD_IS_PX) && amdgpu_is_atpx_hybrid())) + return true; + return false; +} + +/** + * amdgpu_device_supports_baco - Does the device support BACO + * + * @adev: amdgpu device pointer + * + * Return: + * 1 if the device supports BACO; + * 3 if the device supports MACO (only works if BACO is supported) + * otherwise return 0. + */ +int amdgpu_device_supports_baco(struct amdgpu_device *adev) +{ + return amdgpu_asic_supports_baco(adev); +} + +void amdgpu_device_detect_runtime_pm_mode(struct amdgpu_device *adev) +{ + int bamaco_support; + + adev->pm.rpm_mode = AMDGPU_RUNPM_NONE; + bamaco_support = amdgpu_device_supports_baco(adev); + + switch (amdgpu_runtime_pm) { + case 2: + if (bamaco_support & MACO_SUPPORT) { + adev->pm.rpm_mode = AMDGPU_RUNPM_BAMACO; + dev_info(adev->dev, "Forcing BAMACO for runtime pm\n"); + } else if (bamaco_support == BACO_SUPPORT) { + adev->pm.rpm_mode = AMDGPU_RUNPM_BACO; + dev_info(adev->dev, "Requested mode BAMACO not available,fallback to use BACO\n"); + } + break; + case 1: + if (bamaco_support & BACO_SUPPORT) { + adev->pm.rpm_mode = AMDGPU_RUNPM_BACO; + dev_info(adev->dev, "Forcing BACO for runtime pm\n"); + } + break; + case -1: + case -2: + if (amdgpu_device_supports_px(adev)) { + /* enable PX as runtime mode */ + adev->pm.rpm_mode = AMDGPU_RUNPM_PX; + dev_info(adev->dev, "Using ATPX for runtime pm\n"); + } else if (amdgpu_device_supports_boco(adev)) { + /* enable boco as runtime mode */ + adev->pm.rpm_mode = AMDGPU_RUNPM_BOCO; + dev_info(adev->dev, "Using BOCO for runtime pm\n"); + } else { + if (!bamaco_support) + goto no_runtime_pm; + + switch (adev->asic_type) { + case CHIP_VEGA20: + case CHIP_ARCTURUS: + /* BACO are not supported on vega20 and arctrus */ + break; + case CHIP_VEGA10: + /* enable BACO as runpm mode if noretry=0 */ + if (!adev->gmc.noretry && !amdgpu_passthrough(adev)) + adev->pm.rpm_mode = AMDGPU_RUNPM_BACO; + break; + default: + /* enable BACO as runpm mode on CI+ */ + if (!amdgpu_passthrough(adev)) + adev->pm.rpm_mode = AMDGPU_RUNPM_BACO; + break; + } + + if (adev->pm.rpm_mode == AMDGPU_RUNPM_BACO) { + if (bamaco_support & MACO_SUPPORT) { + adev->pm.rpm_mode = AMDGPU_RUNPM_BAMACO; + dev_info(adev->dev, "Using BAMACO for runtime pm\n"); + } else { + dev_info(adev->dev, "Using BACO for runtime pm\n"); + } + } + } + break; + case 0: + dev_info(adev->dev, "runtime pm is manually disabled\n"); + break; + default: + break; + } + +no_runtime_pm: + if (adev->pm.rpm_mode == AMDGPU_RUNPM_NONE) + dev_info(adev->dev, "Runtime PM not available\n"); +} +/** + * amdgpu_device_supports_smart_shift - Is the device dGPU with + * smart shift support + * + * @adev: amdgpu device pointer + * + * Returns true if the device is a dGPU with Smart Shift support, + * otherwise returns false. + */ +bool amdgpu_device_supports_smart_shift(struct amdgpu_device *adev) +{ + return (amdgpu_device_supports_boco(adev) && + amdgpu_acpi_is_power_shift_control_supported()); +} + +/* + * VRAM access helper functions + */ + +/** + * amdgpu_device_mm_access - access vram by MM_INDEX/MM_DATA + * + * @adev: amdgpu_device pointer + * @pos: offset of the buffer in vram + * @buf: virtual address of the buffer in system memory + * @size: read/write size, sizeof(@buf) must > @size + * @write: true - write to vram, otherwise - read from vram + */ +void amdgpu_device_mm_access(struct amdgpu_device *adev, loff_t pos, + void *buf, size_t size, bool write) +{ + unsigned long flags; + uint32_t hi = ~0, tmp = 0; + uint32_t *data = buf; + uint64_t last; + int idx; + + if (!drm_dev_enter(adev_to_drm(adev), &idx)) + return; + + BUG_ON(!IS_ALIGNED(pos, 4) || !IS_ALIGNED(size, 4)); + + spin_lock_irqsave(&adev->mmio_idx_lock, flags); + for (last = pos + size; pos < last; pos += 4) { + tmp = pos >> 31; + + WREG32_NO_KIQ(mmMM_INDEX, ((uint32_t)pos) | 0x80000000); + if (tmp != hi) { + WREG32_NO_KIQ(mmMM_INDEX_HI, tmp); + hi = tmp; + } + if (write) + WREG32_NO_KIQ(mmMM_DATA, *data++); + else + *data++ = RREG32_NO_KIQ(mmMM_DATA); + } + + spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); + drm_dev_exit(idx); +} + +/** + * amdgpu_device_aper_access - access vram by vram aperture + * + * @adev: amdgpu_device pointer + * @pos: offset of the buffer in vram + * @buf: virtual address of the buffer in system memory + * @size: read/write size, sizeof(@buf) must > @size + * @write: true - write to vram, otherwise - read from vram + * + * The return value means how many bytes have been transferred. + */ +size_t amdgpu_device_aper_access(struct amdgpu_device *adev, loff_t pos, + void *buf, size_t size, bool write) +{ +#ifdef CONFIG_64BIT + void __iomem *addr; + size_t count = 0; + uint64_t last; + + if (!adev->mman.aper_base_kaddr) + return 0; + + last = min(pos + size, adev->gmc.visible_vram_size); + if (last > pos) { + addr = adev->mman.aper_base_kaddr + pos; + count = last - pos; + + if (write) { + memcpy_toio(addr, buf, count); + /* Make sure HDP write cache flush happens without any reordering + * after the system memory contents are sent over PCIe device + */ + mb(); + amdgpu_device_flush_hdp(adev, NULL); + } else { + amdgpu_device_invalidate_hdp(adev, NULL); + /* Make sure HDP read cache is invalidated before issuing a read + * to the PCIe device + */ + mb(); + memcpy_fromio(buf, addr, count); + } + + } + + return count; +#else + return 0; +#endif +} + +/** + * amdgpu_device_vram_access - read/write a buffer in vram + * + * @adev: amdgpu_device pointer + * @pos: offset of the buffer in vram + * @buf: virtual address of the buffer in system memory + * @size: read/write size, sizeof(@buf) must > @size + * @write: true - write to vram, otherwise - read from vram + */ +void amdgpu_device_vram_access(struct amdgpu_device *adev, loff_t pos, + void *buf, size_t size, bool write) +{ + size_t count; + + /* try to using vram apreature to access vram first */ + count = amdgpu_device_aper_access(adev, pos, buf, size, write); + size -= count; + if (size) { + /* using MM to access rest vram */ + pos += count; + buf += count; + amdgpu_device_mm_access(adev, pos, buf, size, write); + } +} + +/* + * register access helper functions. + */ + +/* Check if hw access should be skipped because of hotplug or device error */ +bool amdgpu_device_skip_hw_access(struct amdgpu_device *adev) +{ + if (adev->no_hw_access) + return true; + +#ifdef CONFIG_LOCKDEP + /* + * This is a bit complicated to understand, so worth a comment. What we assert + * here is that the GPU reset is not running on another thread in parallel. + * + * For this we trylock the read side of the reset semaphore, if that succeeds + * we know that the reset is not running in parallel. + * + * If the trylock fails we assert that we are either already holding the read + * side of the lock or are the reset thread itself and hold the write side of + * the lock. + */ + if (in_task()) { + if (down_read_trylock(&adev->reset_domain->sem)) + up_read(&adev->reset_domain->sem); + else + lockdep_assert_held(&adev->reset_domain->sem); + } +#endif + return false; +} + +/** + * amdgpu_device_rreg - read a memory mapped IO or indirect register + * + * @adev: amdgpu_device pointer + * @reg: dword aligned register offset + * @acc_flags: access flags which require special behavior + * + * Returns the 32 bit value from the offset specified. + */ +uint32_t amdgpu_device_rreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t acc_flags) +{ + uint32_t ret; + + if (amdgpu_device_skip_hw_access(adev)) + return 0; + + if ((reg * 4) < adev->rmmio_size) { + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && + amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_domain->sem)) { + ret = amdgpu_kiq_rreg(adev, reg, 0); + up_read(&adev->reset_domain->sem); + } else { + ret = readl(((void __iomem *)adev->rmmio) + (reg * 4)); + } + } else { + ret = adev->pcie_rreg(adev, reg * 4); + } + + trace_amdgpu_device_rreg(adev->pdev->device, reg, ret); + + return ret; +} + +/* + * MMIO register read with bytes helper functions + * @offset:bytes offset from MMIO start + */ + +/** + * amdgpu_mm_rreg8 - read a memory mapped IO register + * + * @adev: amdgpu_device pointer + * @offset: byte aligned register offset + * + * Returns the 8 bit value from the offset specified. + */ +uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset) +{ + if (amdgpu_device_skip_hw_access(adev)) + return 0; + + if (offset < adev->rmmio_size) + return (readb(adev->rmmio + offset)); + BUG(); +} + + +/** + * amdgpu_device_xcc_rreg - read a memory mapped IO or indirect register with specific XCC + * + * @adev: amdgpu_device pointer + * @reg: dword aligned register offset + * @acc_flags: access flags which require special behavior + * @xcc_id: xcc accelerated compute core id + * + * Returns the 32 bit value from the offset specified. + */ +uint32_t amdgpu_device_xcc_rreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t acc_flags, + uint32_t xcc_id) +{ + uint32_t ret, rlcg_flag; + + if (amdgpu_device_skip_hw_access(adev)) + return 0; + + if ((reg * 4) < adev->rmmio_size) { + if (amdgpu_sriov_vf(adev) && + !amdgpu_sriov_runtime(adev) && + adev->gfx.rlc.rlcg_reg_access_supported && + amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, + GC_HWIP, false, + &rlcg_flag)) { + ret = amdgpu_virt_rlcg_reg_rw(adev, reg, 0, rlcg_flag, GET_INST(GC, xcc_id)); + } else if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && + amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_domain->sem)) { + ret = amdgpu_kiq_rreg(adev, reg, xcc_id); + up_read(&adev->reset_domain->sem); + } else { + ret = readl(((void __iomem *)adev->rmmio) + (reg * 4)); + } + } else { + ret = adev->pcie_rreg(adev, reg * 4); + } + + return ret; +} + +/* + * MMIO register write with bytes helper functions + * @offset:bytes offset from MMIO start + * @value: the value want to be written to the register + */ + +/** + * amdgpu_mm_wreg8 - read a memory mapped IO register + * + * @adev: amdgpu_device pointer + * @offset: byte aligned register offset + * @value: 8 bit value to write + * + * Writes the value specified to the offset specified. + */ +void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value) +{ + if (amdgpu_device_skip_hw_access(adev)) + return; + + if (offset < adev->rmmio_size) + writeb(value, adev->rmmio + offset); + else + BUG(); +} + +/** + * amdgpu_device_wreg - write to a memory mapped IO or indirect register + * + * @adev: amdgpu_device pointer + * @reg: dword aligned register offset + * @v: 32 bit value to write to the register + * @acc_flags: access flags which require special behavior + * + * Writes the value specified to the offset specified. + */ +void amdgpu_device_wreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t v, + uint32_t acc_flags) +{ + if (amdgpu_device_skip_hw_access(adev)) + return; + + if ((reg * 4) < adev->rmmio_size) { + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && + amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_domain->sem)) { + amdgpu_kiq_wreg(adev, reg, v, 0); + up_read(&adev->reset_domain->sem); + } else { + writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); + } + } else { + adev->pcie_wreg(adev, reg * 4, v); + } + + trace_amdgpu_device_wreg(adev->pdev->device, reg, v); +} + +/** + * amdgpu_mm_wreg_mmio_rlc - write register either with direct/indirect mmio or with RLC path if in range + * + * @adev: amdgpu_device pointer + * @reg: mmio/rlc register + * @v: value to write + * @xcc_id: xcc accelerated compute core id + * + * this function is invoked only for the debugfs register access + */ +void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, + uint32_t reg, uint32_t v, + uint32_t xcc_id) +{ + if (amdgpu_device_skip_hw_access(adev)) + return; + + if (amdgpu_sriov_fullaccess(adev) && + adev->gfx.rlc.funcs && + adev->gfx.rlc.funcs->is_rlcg_access_range) { + if (adev->gfx.rlc.funcs->is_rlcg_access_range(adev, reg)) + return amdgpu_sriov_wreg(adev, reg, v, 0, 0, xcc_id); + } else if ((reg * 4) >= adev->rmmio_size) { + adev->pcie_wreg(adev, reg * 4, v); + } else { + writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); + } +} + +/** + * amdgpu_device_xcc_wreg - write to a memory mapped IO or indirect register with specific XCC + * + * @adev: amdgpu_device pointer + * @reg: dword aligned register offset + * @v: 32 bit value to write to the register + * @acc_flags: access flags which require special behavior + * @xcc_id: xcc accelerated compute core id + * + * Writes the value specified to the offset specified. + */ +void amdgpu_device_xcc_wreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t v, + uint32_t acc_flags, uint32_t xcc_id) +{ + uint32_t rlcg_flag; + + if (amdgpu_device_skip_hw_access(adev)) + return; + + if ((reg * 4) < adev->rmmio_size) { + if (amdgpu_sriov_vf(adev) && + !amdgpu_sriov_runtime(adev) && + adev->gfx.rlc.rlcg_reg_access_supported && + amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, + GC_HWIP, true, + &rlcg_flag)) { + amdgpu_virt_rlcg_reg_rw(adev, reg, v, rlcg_flag, GET_INST(GC, xcc_id)); + } else if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && + amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_domain->sem)) { + amdgpu_kiq_wreg(adev, reg, v, xcc_id); + up_read(&adev->reset_domain->sem); + } else { + writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); + } + } else { + adev->pcie_wreg(adev, reg * 4, v); + } +} + +/** + * amdgpu_device_indirect_rreg - read an indirect register + * + * @adev: amdgpu_device pointer + * @reg_addr: indirect register address to read from + * + * Returns the value of indirect register @reg_addr + */ +u32 amdgpu_device_indirect_rreg(struct amdgpu_device *adev, + u32 reg_addr) +{ + unsigned long flags, pcie_index, pcie_data; + void __iomem *pcie_index_offset; + void __iomem *pcie_data_offset; + u32 r; + + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + r = readl(pcie_data_offset); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); + + return r; +} + +u32 amdgpu_device_indirect_rreg_ext(struct amdgpu_device *adev, + u64 reg_addr) +{ + unsigned long flags, pcie_index, pcie_index_hi, pcie_data; + u32 r; + void __iomem *pcie_index_offset; + void __iomem *pcie_index_hi_offset; + void __iomem *pcie_data_offset; + + if (unlikely(!adev->nbio.funcs)) { + pcie_index = AMDGPU_PCIE_INDEX_FALLBACK; + pcie_data = AMDGPU_PCIE_DATA_FALLBACK; + } else { + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + } + + if (reg_addr >> 32) { + if (unlikely(!adev->nbio.funcs)) + pcie_index_hi = AMDGPU_PCIE_INDEX_HI_FALLBACK; + else + pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev); + } else { + pcie_index_hi = 0; + } + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + if (pcie_index_hi != 0) + pcie_index_hi_offset = (void __iomem *)adev->rmmio + + pcie_index_hi * 4; + + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + if (pcie_index_hi != 0) { + writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + r = readl(pcie_data_offset); + + /* clear the high bits */ + if (pcie_index_hi != 0) { + writel(0, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); + + return r; +} + +/** + * amdgpu_device_indirect_rreg64 - read a 64bits indirect register + * + * @adev: amdgpu_device pointer + * @reg_addr: indirect register address to read from + * + * Returns the value of indirect register @reg_addr + */ +u64 amdgpu_device_indirect_rreg64(struct amdgpu_device *adev, + u32 reg_addr) +{ + unsigned long flags, pcie_index, pcie_data; + void __iomem *pcie_index_offset; + void __iomem *pcie_data_offset; + u64 r; + + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + + /* read low 32 bits */ + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + r = readl(pcie_data_offset); + /* read high 32 bits */ + writel(reg_addr + 4, pcie_index_offset); + readl(pcie_index_offset); + r |= ((u64)readl(pcie_data_offset) << 32); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); + + return r; +} + +u64 amdgpu_device_indirect_rreg64_ext(struct amdgpu_device *adev, + u64 reg_addr) +{ + unsigned long flags, pcie_index, pcie_data; + unsigned long pcie_index_hi = 0; + void __iomem *pcie_index_offset; + void __iomem *pcie_index_hi_offset; + void __iomem *pcie_data_offset; + u64 r; + + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + if ((reg_addr >> 32) && (adev->nbio.funcs->get_pcie_index_hi_offset)) + pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + if (pcie_index_hi != 0) + pcie_index_hi_offset = (void __iomem *)adev->rmmio + + pcie_index_hi * 4; + + /* read low 32 bits */ + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + if (pcie_index_hi != 0) { + writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + r = readl(pcie_data_offset); + /* read high 32 bits */ + writel(reg_addr + 4, pcie_index_offset); + readl(pcie_index_offset); + if (pcie_index_hi != 0) { + writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + r |= ((u64)readl(pcie_data_offset) << 32); + + /* clear the high bits */ + if (pcie_index_hi != 0) { + writel(0, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); + + return r; +} + +/** + * amdgpu_device_indirect_wreg - write an indirect register address + * + * @adev: amdgpu_device pointer + * @reg_addr: indirect register offset + * @reg_data: indirect register data + * + */ +void amdgpu_device_indirect_wreg(struct amdgpu_device *adev, + u32 reg_addr, u32 reg_data) +{ + unsigned long flags, pcie_index, pcie_data; + void __iomem *pcie_index_offset; + void __iomem *pcie_data_offset; + + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + writel(reg_data, pcie_data_offset); + readl(pcie_data_offset); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); +} + +void amdgpu_device_indirect_wreg_ext(struct amdgpu_device *adev, + u64 reg_addr, u32 reg_data) +{ + unsigned long flags, pcie_index, pcie_index_hi, pcie_data; + void __iomem *pcie_index_offset; + void __iomem *pcie_index_hi_offset; + void __iomem *pcie_data_offset; + + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + if ((reg_addr >> 32) && (adev->nbio.funcs->get_pcie_index_hi_offset)) + pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev); + else + pcie_index_hi = 0; + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + if (pcie_index_hi != 0) + pcie_index_hi_offset = (void __iomem *)adev->rmmio + + pcie_index_hi * 4; + + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + if (pcie_index_hi != 0) { + writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + writel(reg_data, pcie_data_offset); + readl(pcie_data_offset); + + /* clear the high bits */ + if (pcie_index_hi != 0) { + writel(0, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); +} + +/** + * amdgpu_device_indirect_wreg64 - write a 64bits indirect register address + * + * @adev: amdgpu_device pointer + * @reg_addr: indirect register offset + * @reg_data: indirect register data + * + */ +void amdgpu_device_indirect_wreg64(struct amdgpu_device *adev, + u32 reg_addr, u64 reg_data) +{ + unsigned long flags, pcie_index, pcie_data; + void __iomem *pcie_index_offset; + void __iomem *pcie_data_offset; + + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + + /* write low 32 bits */ + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + writel((u32)(reg_data & 0xffffffffULL), pcie_data_offset); + readl(pcie_data_offset); + /* write high 32 bits */ + writel(reg_addr + 4, pcie_index_offset); + readl(pcie_index_offset); + writel((u32)(reg_data >> 32), pcie_data_offset); + readl(pcie_data_offset); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); +} + +void amdgpu_device_indirect_wreg64_ext(struct amdgpu_device *adev, + u64 reg_addr, u64 reg_data) +{ + unsigned long flags, pcie_index, pcie_data; + unsigned long pcie_index_hi = 0; + void __iomem *pcie_index_offset; + void __iomem *pcie_index_hi_offset; + void __iomem *pcie_data_offset; + + pcie_index = adev->nbio.funcs->get_pcie_index_offset(adev); + pcie_data = adev->nbio.funcs->get_pcie_data_offset(adev); + if ((reg_addr >> 32) && (adev->nbio.funcs->get_pcie_index_hi_offset)) + pcie_index_hi = adev->nbio.funcs->get_pcie_index_hi_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + pcie_index_offset = (void __iomem *)adev->rmmio + pcie_index * 4; + pcie_data_offset = (void __iomem *)adev->rmmio + pcie_data * 4; + if (pcie_index_hi != 0) + pcie_index_hi_offset = (void __iomem *)adev->rmmio + + pcie_index_hi * 4; + + /* write low 32 bits */ + writel(reg_addr, pcie_index_offset); + readl(pcie_index_offset); + if (pcie_index_hi != 0) { + writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + writel((u32)(reg_data & 0xffffffffULL), pcie_data_offset); + readl(pcie_data_offset); + /* write high 32 bits */ + writel(reg_addr + 4, pcie_index_offset); + readl(pcie_index_offset); + if (pcie_index_hi != 0) { + writel((reg_addr >> 32) & 0xff, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + writel((u32)(reg_data >> 32), pcie_data_offset); + readl(pcie_data_offset); + + /* clear the high bits */ + if (pcie_index_hi != 0) { + writel(0, pcie_index_hi_offset); + readl(pcie_index_hi_offset); + } + + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); +} + +/** + * amdgpu_device_get_rev_id - query device rev_id + * + * @adev: amdgpu_device pointer + * + * Return device rev_id + */ +u32 amdgpu_device_get_rev_id(struct amdgpu_device *adev) +{ + return adev->nbio.funcs->get_rev_id(adev); +} + +/** + * amdgpu_invalid_rreg - dummy reg read function + * + * @adev: amdgpu_device pointer + * @reg: offset of register + * + * Dummy register read function. Used for register blocks + * that certain asics don't have (all asics). + * Returns the value in the register. + */ +static uint32_t amdgpu_invalid_rreg(struct amdgpu_device *adev, uint32_t reg) +{ + dev_err(adev->dev, "Invalid callback to read register 0x%04X\n", reg); + BUG(); + return 0; +} + +static uint32_t amdgpu_invalid_rreg_ext(struct amdgpu_device *adev, uint64_t reg) +{ + dev_err(adev->dev, "Invalid callback to read register 0x%llX\n", reg); + BUG(); + return 0; +} + +/** + * amdgpu_invalid_wreg - dummy reg write function + * + * @adev: amdgpu_device pointer + * @reg: offset of register + * @v: value to write to the register + * + * Dummy register read function. Used for register blocks + * that certain asics don't have (all asics). + */ +static void amdgpu_invalid_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v) +{ + dev_err(adev->dev, + "Invalid callback to write register 0x%04X with 0x%08X\n", reg, + v); + BUG(); +} + +static void amdgpu_invalid_wreg_ext(struct amdgpu_device *adev, uint64_t reg, uint32_t v) +{ + dev_err(adev->dev, + "Invalid callback to write register 0x%llX with 0x%08X\n", reg, + v); + BUG(); +} + +/** + * amdgpu_invalid_rreg64 - dummy 64 bit reg read function + * + * @adev: amdgpu_device pointer + * @reg: offset of register + * + * Dummy register read function. Used for register blocks + * that certain asics don't have (all asics). + * Returns the value in the register. + */ +static uint64_t amdgpu_invalid_rreg64(struct amdgpu_device *adev, uint32_t reg) +{ + dev_err(adev->dev, "Invalid callback to read 64 bit register 0x%04X\n", + reg); + BUG(); + return 0; +} + +static uint64_t amdgpu_invalid_rreg64_ext(struct amdgpu_device *adev, uint64_t reg) +{ + dev_err(adev->dev, "Invalid callback to read register 0x%llX\n", reg); + BUG(); + return 0; +} + +/** + * amdgpu_invalid_wreg64 - dummy reg write function + * + * @adev: amdgpu_device pointer + * @reg: offset of register + * @v: value to write to the register + * + * Dummy register read function. Used for register blocks + * that certain asics don't have (all asics). + */ +static void amdgpu_invalid_wreg64(struct amdgpu_device *adev, uint32_t reg, uint64_t v) +{ + dev_err(adev->dev, + "Invalid callback to write 64 bit register 0x%04X with 0x%08llX\n", + reg, v); + BUG(); +} + +static void amdgpu_invalid_wreg64_ext(struct amdgpu_device *adev, uint64_t reg, uint64_t v) +{ + dev_err(adev->dev, + "Invalid callback to write 64 bit register 0x%llX with 0x%08llX\n", + reg, v); + BUG(); +} + +/** + * amdgpu_block_invalid_rreg - dummy reg read function + * + * @adev: amdgpu_device pointer + * @block: offset of instance + * @reg: offset of register + * + * Dummy register read function. Used for register blocks + * that certain asics don't have (all asics). + * Returns the value in the register. + */ +static uint32_t amdgpu_block_invalid_rreg(struct amdgpu_device *adev, + uint32_t block, uint32_t reg) +{ + dev_err(adev->dev, + "Invalid callback to read register 0x%04X in block 0x%04X\n", + reg, block); + BUG(); + return 0; +} + +/** + * amdgpu_block_invalid_wreg - dummy reg write function + * + * @adev: amdgpu_device pointer + * @block: offset of instance + * @reg: offset of register + * @v: value to write to the register + * + * Dummy register read function. Used for register blocks + * that certain asics don't have (all asics). + */ +static void amdgpu_block_invalid_wreg(struct amdgpu_device *adev, + uint32_t block, + uint32_t reg, uint32_t v) +{ + dev_err(adev->dev, + "Invalid block callback to write register 0x%04X in block 0x%04X with 0x%08X\n", + reg, block, v); + BUG(); +} + +static uint32_t amdgpu_device_get_vbios_flags(struct amdgpu_device *adev) +{ + if (hweight32(adev->aid_mask) && (adev->flags & AMD_IS_APU)) + return AMDGPU_VBIOS_SKIP; + + if (hweight32(adev->aid_mask) && amdgpu_passthrough(adev)) + return AMDGPU_VBIOS_OPTIONAL; + + return 0; +} + +/** + * amdgpu_device_asic_init - Wrapper for atom asic_init + * + * @adev: amdgpu_device pointer + * + * Does any asic specific work and then calls atom asic init. + */ +static int amdgpu_device_asic_init(struct amdgpu_device *adev) +{ + uint32_t flags; + bool optional; + int ret; + + amdgpu_asic_pre_asic_init(adev); + flags = amdgpu_device_get_vbios_flags(adev); + optional = !!(flags & (AMDGPU_VBIOS_OPTIONAL | AMDGPU_VBIOS_SKIP)); + + if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3) || + amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 4) || + amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 5, 0) || + amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(11, 0, 0)) { + amdgpu_psp_wait_for_bootloader(adev); + if (optional && !adev->bios) + return 0; + + ret = amdgpu_atomfirmware_asic_init(adev, true); + return ret; + } else { + if (optional && !adev->bios) + return 0; + + return amdgpu_atom_asic_init(adev->mode_info.atom_context); + } + + return 0; +} + +/** + * amdgpu_device_mem_scratch_init - allocate the VRAM scratch page + * + * @adev: amdgpu_device pointer + * + * Allocates a scratch page of VRAM for use by various things in the + * driver. + */ +static int amdgpu_device_mem_scratch_init(struct amdgpu_device *adev) +{ + return amdgpu_bo_create_kernel(adev, AMDGPU_GPU_PAGE_SIZE, PAGE_SIZE, + AMDGPU_GEM_DOMAIN_VRAM | + AMDGPU_GEM_DOMAIN_GTT, + &adev->mem_scratch.robj, + &adev->mem_scratch.gpu_addr, + (void **)&adev->mem_scratch.ptr); +} + +/** + * amdgpu_device_mem_scratch_fini - Free the VRAM scratch page + * + * @adev: amdgpu_device pointer + * + * Frees the VRAM scratch page. + */ +static void amdgpu_device_mem_scratch_fini(struct amdgpu_device *adev) +{ + amdgpu_bo_free_kernel(&adev->mem_scratch.robj, NULL, NULL); +} + +/** + * amdgpu_device_program_register_sequence - program an array of registers. + * + * @adev: amdgpu_device pointer + * @registers: pointer to the register array + * @array_size: size of the register array + * + * Programs an array or registers with and or masks. + * This is a helper for setting golden registers. + */ +void amdgpu_device_program_register_sequence(struct amdgpu_device *adev, + const u32 *registers, + const u32 array_size) +{ + u32 tmp, reg, and_mask, or_mask; + int i; + + if (array_size % 3) + return; + + for (i = 0; i < array_size; i += 3) { + reg = registers[i + 0]; + and_mask = registers[i + 1]; + or_mask = registers[i + 2]; + + if (and_mask == 0xffffffff) { + tmp = or_mask; + } else { + tmp = RREG32(reg); + tmp &= ~and_mask; + if (adev->family >= AMDGPU_FAMILY_AI) + tmp |= (or_mask & and_mask); + else + tmp |= or_mask; + } + WREG32(reg, tmp); + } +} + +/** + * amdgpu_device_pci_config_reset - reset the GPU + * + * @adev: amdgpu_device pointer + * + * Resets the GPU using the pci config reset sequence. + * Only applicable to asics prior to vega10. + */ +void amdgpu_device_pci_config_reset(struct amdgpu_device *adev) +{ + pci_write_config_dword(adev->pdev, 0x7c, AMDGPU_ASIC_RESET_DATA); +} + +/** + * amdgpu_device_pci_reset - reset the GPU using generic PCI means + * + * @adev: amdgpu_device pointer + * + * Resets the GPU using generic pci reset interfaces (FLR, SBR, etc.). + */ +int amdgpu_device_pci_reset(struct amdgpu_device *adev) +{ + return pci_reset_function(adev->pdev); +} + +/* + * amdgpu_device_wb_*() + * Writeback is the method by which the GPU updates special pages in memory + * with the status of certain GPU events (fences, ring pointers,etc.). + */ + +/** + * amdgpu_device_wb_fini - Disable Writeback and free memory + * + * @adev: amdgpu_device pointer + * + * Disables Writeback and frees the Writeback memory (all asics). + * Used at driver shutdown. + */ +static void amdgpu_device_wb_fini(struct amdgpu_device *adev) +{ + if (adev->wb.wb_obj) { + amdgpu_bo_free_kernel(&adev->wb.wb_obj, + &adev->wb.gpu_addr, + (void **)&adev->wb.wb); + adev->wb.wb_obj = NULL; + } +} + +/** + * amdgpu_device_wb_init - Init Writeback driver info and allocate memory + * + * @adev: amdgpu_device pointer + * + * Initializes writeback and allocates writeback memory (all asics). + * Used at driver startup. + * Returns 0 on success or an -error on failure. + */ +static int amdgpu_device_wb_init(struct amdgpu_device *adev) +{ + int r; + + if (adev->wb.wb_obj == NULL) { + /* AMDGPU_MAX_WB * sizeof(uint32_t) * 8 = AMDGPU_MAX_WB 256bit slots */ + r = amdgpu_bo_create_kernel(adev, AMDGPU_MAX_WB * sizeof(uint32_t) * 8, + PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT, + &adev->wb.wb_obj, &adev->wb.gpu_addr, + (void **)&adev->wb.wb); + if (r) { + dev_warn(adev->dev, "(%d) create WB bo failed\n", r); + return r; + } + + adev->wb.num_wb = AMDGPU_MAX_WB; + memset(&adev->wb.used, 0, sizeof(adev->wb.used)); + + /* clear wb memory */ + memset((char *)adev->wb.wb, 0, AMDGPU_MAX_WB * sizeof(uint32_t) * 8); + } + + return 0; +} + +/** + * amdgpu_device_wb_get - Allocate a wb entry + * + * @adev: amdgpu_device pointer + * @wb: wb index + * + * Allocate a wb slot for use by the driver (all asics). + * Returns 0 on success or -EINVAL on failure. + */ +int amdgpu_device_wb_get(struct amdgpu_device *adev, u32 *wb) +{ + unsigned long flags, offset; + + spin_lock_irqsave(&adev->wb.lock, flags); + offset = find_first_zero_bit(adev->wb.used, adev->wb.num_wb); + if (offset < adev->wb.num_wb) { + __set_bit(offset, adev->wb.used); + spin_unlock_irqrestore(&adev->wb.lock, flags); + *wb = offset << 3; /* convert to dw offset */ + return 0; + } else { + spin_unlock_irqrestore(&adev->wb.lock, flags); + return -EINVAL; + } +} + +/** + * amdgpu_device_wb_free - Free a wb entry + * + * @adev: amdgpu_device pointer + * @wb: wb index + * + * Free a wb slot allocated for use by the driver (all asics) + */ +void amdgpu_device_wb_free(struct amdgpu_device *adev, u32 wb) +{ + unsigned long flags; + + wb >>= 3; + spin_lock_irqsave(&adev->wb.lock, flags); + if (wb < adev->wb.num_wb) + __clear_bit(wb, adev->wb.used); + spin_unlock_irqrestore(&adev->wb.lock, flags); +} + +/** + * amdgpu_device_resize_fb_bar - try to resize FB BAR + * + * @adev: amdgpu_device pointer + * + * Try to resize FB BAR to make all VRAM CPU accessible. We try very hard not + * to fail, but if any of the BARs is not accessible after the size we abort + * driver loading by returning -ENODEV. + */ +int amdgpu_device_resize_fb_bar(struct amdgpu_device *adev) +{ + int rbar_size = pci_rebar_bytes_to_size(adev->gmc.real_vram_size); + struct pci_bus *root; + struct resource *res; + int max_size, r; + unsigned int i; + u16 cmd; + + if (!IS_ENABLED(CONFIG_PHYS_ADDR_T_64BIT)) + return 0; + + /* Bypass for VF */ + if (amdgpu_sriov_vf(adev)) + return 0; + + if (!amdgpu_rebar) + return 0; + + /* resizing on Dell G5 SE platforms causes problems with runtime pm */ + if ((amdgpu_runtime_pm != 0) && + adev->pdev->vendor == PCI_VENDOR_ID_ATI && + adev->pdev->device == 0x731f && + adev->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL) + return 0; + + /* PCI_EXT_CAP_ID_VNDR extended capability is located at 0x100 */ + if (!pci_find_ext_capability(adev->pdev, PCI_EXT_CAP_ID_VNDR)) + dev_warn( + adev->dev, + "System can't access extended configuration space, please check!!\n"); + + /* skip if the bios has already enabled large BAR */ + if (adev->gmc.real_vram_size && + (pci_resource_len(adev->pdev, 0) >= adev->gmc.real_vram_size)) + return 0; + + /* Check if the root BUS has 64bit memory resources */ + root = adev->pdev->bus; + while (root->parent) + root = root->parent; + + pci_bus_for_each_resource(root, res, i) { + if (res && res->flags & (IORESOURCE_MEM | IORESOURCE_MEM_64) && + res->start > 0x100000000ull) + break; + } + + /* Trying to resize is pointless without a root hub window above 4GB */ + if (!res) + return 0; + + /* Limit the BAR size to what is available */ + max_size = pci_rebar_get_max_size(adev->pdev, 0); + if (max_size < 0) + return 0; + rbar_size = min(max_size, rbar_size); + + /* Disable memory decoding while we change the BAR addresses and size */ + pci_read_config_word(adev->pdev, PCI_COMMAND, &cmd); + pci_write_config_word(adev->pdev, PCI_COMMAND, + cmd & ~PCI_COMMAND_MEMORY); + + /* Tear down doorbell as resizing will release BARs */ + amdgpu_doorbell_fini(adev); + + r = pci_resize_resource(adev->pdev, 0, rbar_size, + (adev->asic_type >= CHIP_BONAIRE) ? 1 << 5 + : 1 << 2); + if (r == -ENOSPC) + dev_info(adev->dev, + "Not enough PCI address space for a large BAR."); + else if (r && r != -ENOTSUPP) + dev_err(adev->dev, "Problem resizing BAR0 (%d).", r); + + /* When the doorbell or fb BAR isn't available we have no chance of + * using the device. + */ + r = amdgpu_doorbell_init(adev); + if (r || (pci_resource_flags(adev->pdev, 0) & IORESOURCE_UNSET)) + return -ENODEV; + + pci_write_config_word(adev->pdev, PCI_COMMAND, cmd); + + return 0; +} + +/* + * GPU helpers function. + */ +/** + * amdgpu_device_need_post - check if the hw need post or not + * + * @adev: amdgpu_device pointer + * + * Check if the asic has been initialized (all asics) at driver startup + * or post is needed if hw reset is performed. + * Returns true if need or false if not. + */ +bool amdgpu_device_need_post(struct amdgpu_device *adev) +{ + uint32_t reg, flags; + + if (amdgpu_sriov_vf(adev)) + return false; + + flags = amdgpu_device_get_vbios_flags(adev); + if (flags & AMDGPU_VBIOS_SKIP) + return false; + if ((flags & AMDGPU_VBIOS_OPTIONAL) && !adev->bios) + return false; + + if (amdgpu_passthrough(adev)) { + /* for FIJI: In whole GPU pass-through virtualization case, after VM reboot + * some old smc fw still need driver do vPost otherwise gpu hang, while + * those smc fw version above 22.15 doesn't have this flaw, so we force + * vpost executed for smc version below 22.15 + */ + if (adev->asic_type == CHIP_FIJI) { + int err; + uint32_t fw_ver; + + err = request_firmware(&adev->pm.fw, "amdgpu/fiji_smc.bin", adev->dev); + /* force vPost if error occurred */ + if (err) + return true; + + fw_ver = *((uint32_t *)adev->pm.fw->data + 69); + release_firmware(adev->pm.fw); + if (fw_ver < 0x00160e00) + return true; + } + } + + /* Don't post if we need to reset whole hive on init */ + if (adev->init_lvl->level == AMDGPU_INIT_LEVEL_MINIMAL_XGMI) + return false; + + if (adev->has_hw_reset) { + adev->has_hw_reset = false; + return true; + } + + /* bios scratch used on CIK+ */ + if (adev->asic_type >= CHIP_BONAIRE) + return amdgpu_atombios_scratch_need_asic_init(adev); + + /* check MEM_SIZE for older asics */ + reg = amdgpu_asic_get_config_memsize(adev); + + if ((reg != 0) && (reg != 0xffffffff)) + return false; + + return true; +} + +/* + * Check whether seamless boot is supported. + * + * So far we only support seamless boot on DCE 3.0 or later. + * If users report that it works on older ASICS as well, we may + * loosen this. + */ +bool amdgpu_device_seamless_boot_supported(struct amdgpu_device *adev) +{ + switch (amdgpu_seamless) { + case -1: + break; + case 1: + return true; + case 0: + return false; + default: + dev_err(adev->dev, "Invalid value for amdgpu.seamless: %d\n", + amdgpu_seamless); + return false; + } + + if (!(adev->flags & AMD_IS_APU)) + return false; + + if (adev->mman.keep_stolen_vga_memory) + return false; + + return amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 0, 0); +} + +/* + * Intel hosts such as Rocket Lake, Alder Lake, Raptor Lake and Sapphire Rapids + * don't support dynamic speed switching. Until we have confirmation from Intel + * that a specific host supports it, it's safer that we keep it disabled for all. + * + * https://edc.intel.com/content/www/us/en/design/products/platforms/details/raptor-lake-s/13th-generation-core-processors-datasheet-volume-1-of-2/005/pci-express-support/ + * https://gitlab.freedesktop.org/drm/amd/-/issues/2663 + */ +static bool amdgpu_device_pcie_dynamic_switching_supported(struct amdgpu_device *adev) +{ +#if IS_ENABLED(CONFIG_X86) + struct cpuinfo_x86 *c = &cpu_data(0); + + /* eGPU change speeds based on USB4 fabric conditions */ + if (dev_is_removable(adev->dev)) + return true; + + if (c->x86_vendor == X86_VENDOR_INTEL) + return false; +#endif + return true; +} + +static bool amdgpu_device_aspm_support_quirk(struct amdgpu_device *adev) +{ + /* Enabling ASPM causes randoms hangs on Tahiti and Oland on Zen4. + * It's unclear if this is a platform-specific or GPU-specific issue. + * Disable ASPM on SI for the time being. + */ + if (adev->family == AMDGPU_FAMILY_SI) + return true; + +#if IS_ENABLED(CONFIG_X86) + struct cpuinfo_x86 *c = &cpu_data(0); + + if (!(amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 0, 0) || + amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 0, 1))) + return false; + + if (c->x86 == 6 && + adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN5) { + switch (c->x86_model) { + case VFM_MODEL(INTEL_ALDERLAKE): + case VFM_MODEL(INTEL_ALDERLAKE_L): + case VFM_MODEL(INTEL_RAPTORLAKE): + case VFM_MODEL(INTEL_RAPTORLAKE_P): + case VFM_MODEL(INTEL_RAPTORLAKE_S): + return true; + default: + return false; + } + } else { + return false; + } +#else + return false; +#endif +} + +/** + * amdgpu_device_should_use_aspm - check if the device should program ASPM + * + * @adev: amdgpu_device pointer + * + * Confirm whether the module parameter and pcie bridge agree that ASPM should + * be set for this device. + * + * Returns true if it should be used or false if not. + */ +bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev) +{ + switch (amdgpu_aspm) { + case -1: + break; + case 0: + return false; + case 1: + return true; + default: + return false; + } + if (adev->flags & AMD_IS_APU) + return false; + if (amdgpu_device_aspm_support_quirk(adev)) + return false; + return pcie_aspm_enabled(adev->pdev); +} + +/* if we get transitioned to only one device, take VGA back */ +/** + * amdgpu_device_vga_set_decode - enable/disable vga decode + * + * @pdev: PCI device pointer + * @state: enable/disable vga decode + * + * Enable/disable vga decode (all asics). + * Returns VGA resource flags. + */ +static unsigned int amdgpu_device_vga_set_decode(struct pci_dev *pdev, + bool state) +{ + struct amdgpu_device *adev = drm_to_adev(pci_get_drvdata(pdev)); + + amdgpu_asic_set_vga_state(adev, state); + if (state) + return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | + VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; + else + return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; +} + +/** + * amdgpu_device_check_block_size - validate the vm block size + * + * @adev: amdgpu_device pointer + * + * Validates the vm block size specified via module parameter. + * The vm block size defines number of bits in page table versus page directory, + * a page is 4KB so we have 12 bits offset, minimum 9 bits in the + * page table and the remaining bits are in the page directory. + */ +static void amdgpu_device_check_block_size(struct amdgpu_device *adev) +{ + /* defines number of bits in page table versus page directory, + * a page is 4KB so we have 12 bits offset, minimum 9 bits in the + * page table and the remaining bits are in the page directory + */ + if (amdgpu_vm_block_size == -1) + return; + + if (amdgpu_vm_block_size < 9) { + dev_warn(adev->dev, "VM page table size (%d) too small\n", + amdgpu_vm_block_size); + amdgpu_vm_block_size = -1; + } +} + +/** + * amdgpu_device_check_vm_size - validate the vm size + * + * @adev: amdgpu_device pointer + * + * Validates the vm size in GB specified via module parameter. + * The VM size is the size of the GPU virtual memory space in GB. + */ +static void amdgpu_device_check_vm_size(struct amdgpu_device *adev) +{ + /* no need to check the default value */ + if (amdgpu_vm_size == -1) + return; + + if (amdgpu_vm_size < 1) { + dev_warn(adev->dev, "VM size (%d) too small, min is 1GB\n", + amdgpu_vm_size); + amdgpu_vm_size = -1; + } +} + +static void amdgpu_device_check_smu_prv_buffer_size(struct amdgpu_device *adev) +{ + struct sysinfo si; + bool is_os_64 = (sizeof(void *) == 8); + uint64_t total_memory; + uint64_t dram_size_seven_GB = 0x1B8000000; + uint64_t dram_size_three_GB = 0xB8000000; + + if (amdgpu_smu_memory_pool_size == 0) + return; + + if (!is_os_64) { + dev_warn(adev->dev, "Not 64-bit OS, feature not supported\n"); + goto def_value; + } + si_meminfo(&si); + total_memory = (uint64_t)si.totalram * si.mem_unit; + + if ((amdgpu_smu_memory_pool_size == 1) || + (amdgpu_smu_memory_pool_size == 2)) { + if (total_memory < dram_size_three_GB) + goto def_value1; + } else if ((amdgpu_smu_memory_pool_size == 4) || + (amdgpu_smu_memory_pool_size == 8)) { + if (total_memory < dram_size_seven_GB) + goto def_value1; + } else { + dev_warn(adev->dev, "Smu memory pool size not supported\n"); + goto def_value; + } + adev->pm.smu_prv_buffer_size = amdgpu_smu_memory_pool_size << 28; + + return; + +def_value1: + dev_warn(adev->dev, "No enough system memory\n"); +def_value: + adev->pm.smu_prv_buffer_size = 0; +} + +static int amdgpu_device_init_apu_flags(struct amdgpu_device *adev) +{ + if (!(adev->flags & AMD_IS_APU) || + adev->asic_type < CHIP_RAVEN) + return 0; + + switch (adev->asic_type) { + case CHIP_RAVEN: + if (adev->pdev->device == 0x15dd) + adev->apu_flags |= AMD_APU_IS_RAVEN; + if (adev->pdev->device == 0x15d8) + adev->apu_flags |= AMD_APU_IS_PICASSO; + break; + case CHIP_RENOIR: + if ((adev->pdev->device == 0x1636) || + (adev->pdev->device == 0x164c)) + adev->apu_flags |= AMD_APU_IS_RENOIR; + else + adev->apu_flags |= AMD_APU_IS_GREEN_SARDINE; + break; + case CHIP_VANGOGH: + adev->apu_flags |= AMD_APU_IS_VANGOGH; + break; + case CHIP_YELLOW_CARP: + break; + case CHIP_CYAN_SKILLFISH: + if ((adev->pdev->device == 0x13FE) || + (adev->pdev->device == 0x143F)) + adev->apu_flags |= AMD_APU_IS_CYAN_SKILLFISH2; + break; + default: + break; + } + + return 0; +} + +/** + * amdgpu_device_check_arguments - validate module params + * + * @adev: amdgpu_device pointer + * + * Validates certain module parameters and updates + * the associated values used by the driver (all asics). + */ +static int amdgpu_device_check_arguments(struct amdgpu_device *adev) +{ + int i; + + if (amdgpu_sched_jobs < 4) { + dev_warn(adev->dev, "sched jobs (%d) must be at least 4\n", + amdgpu_sched_jobs); + amdgpu_sched_jobs = 4; + } else if (!is_power_of_2(amdgpu_sched_jobs)) { + dev_warn(adev->dev, "sched jobs (%d) must be a power of 2\n", + amdgpu_sched_jobs); + amdgpu_sched_jobs = roundup_pow_of_two(amdgpu_sched_jobs); + } + + if (amdgpu_gart_size != -1 && amdgpu_gart_size < 32) { + /* gart size must be greater or equal to 32M */ + dev_warn(adev->dev, "gart size (%d) too small\n", + amdgpu_gart_size); + amdgpu_gart_size = -1; + } + + if (amdgpu_gtt_size != -1 && amdgpu_gtt_size < 32) { + /* gtt size must be greater or equal to 32M */ + dev_warn(adev->dev, "gtt size (%d) too small\n", + amdgpu_gtt_size); + amdgpu_gtt_size = -1; + } + + /* valid range is between 4 and 9 inclusive */ + if (amdgpu_vm_fragment_size != -1 && + (amdgpu_vm_fragment_size > 9 || amdgpu_vm_fragment_size < 4)) { + dev_warn(adev->dev, "valid range is between 4 and 9\n"); + amdgpu_vm_fragment_size = -1; + } + + if (amdgpu_sched_hw_submission < 2) { + dev_warn(adev->dev, "sched hw submission jobs (%d) must be at least 2\n", + amdgpu_sched_hw_submission); + amdgpu_sched_hw_submission = 2; + } else if (!is_power_of_2(amdgpu_sched_hw_submission)) { + dev_warn(adev->dev, "sched hw submission jobs (%d) must be a power of 2\n", + amdgpu_sched_hw_submission); + amdgpu_sched_hw_submission = roundup_pow_of_two(amdgpu_sched_hw_submission); + } + + if (amdgpu_reset_method < -1 || amdgpu_reset_method > 4) { + dev_warn(adev->dev, "invalid option for reset method, reverting to default\n"); + amdgpu_reset_method = -1; + } + + amdgpu_device_check_smu_prv_buffer_size(adev); + + amdgpu_device_check_vm_size(adev); + + amdgpu_device_check_block_size(adev); + + adev->firmware.load_type = amdgpu_ucode_get_load_type(adev, amdgpu_fw_load_type); + + for (i = 0; i < MAX_XCP; i++) { + switch (amdgpu_enforce_isolation) { + case -1: + case 0: + default: + /* disable */ + adev->enforce_isolation[i] = AMDGPU_ENFORCE_ISOLATION_DISABLE; + break; + case 1: + /* enable */ + adev->enforce_isolation[i] = + AMDGPU_ENFORCE_ISOLATION_ENABLE; + break; + case 2: + /* enable legacy mode */ + adev->enforce_isolation[i] = + AMDGPU_ENFORCE_ISOLATION_ENABLE_LEGACY; + break; + case 3: + /* enable only process isolation without submitting cleaner shader */ + adev->enforce_isolation[i] = + AMDGPU_ENFORCE_ISOLATION_NO_CLEANER_SHADER; + break; + } + } + + return 0; +} + +/** + * amdgpu_switcheroo_set_state - set switcheroo state + * + * @pdev: pci dev pointer + * @state: vga_switcheroo state + * + * Callback for the switcheroo driver. Suspends or resumes + * the asics before or after it is powered up using ACPI methods. + */ +static void amdgpu_switcheroo_set_state(struct pci_dev *pdev, + enum vga_switcheroo_state state) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + int r; + + if (amdgpu_device_supports_px(drm_to_adev(dev)) && + state == VGA_SWITCHEROO_OFF) + return; + + if (state == VGA_SWITCHEROO_ON) { + pr_info("switched on\n"); + /* don't suspend or resume card normally */ + dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; + + pci_set_power_state(pdev, PCI_D0); + amdgpu_device_load_pci_state(pdev); + r = pci_enable_device(pdev); + if (r) + dev_warn(&pdev->dev, "pci_enable_device failed (%d)\n", + r); + amdgpu_device_resume(dev, true); + + dev->switch_power_state = DRM_SWITCH_POWER_ON; + } else { + dev_info(&pdev->dev, "switched off\n"); + dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; + amdgpu_device_prepare(dev); + amdgpu_device_suspend(dev, true); + amdgpu_device_cache_pci_state(pdev); + /* Shut down the device */ + pci_disable_device(pdev); + pci_set_power_state(pdev, PCI_D3cold); + dev->switch_power_state = DRM_SWITCH_POWER_OFF; + } +} + +/** + * amdgpu_switcheroo_can_switch - see if switcheroo state can change + * + * @pdev: pci dev pointer + * + * Callback for the switcheroo driver. Check of the switcheroo + * state can be changed. + * Returns true if the state can be changed, false if not. + */ +static bool amdgpu_switcheroo_can_switch(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + + /* + * FIXME: open_count is protected by drm_global_mutex but that would lead to + * locking inversion with the driver load path. And the access here is + * completely racy anyway. So don't bother with locking for now. + */ + return atomic_read(&dev->open_count) == 0; +} + +static const struct vga_switcheroo_client_ops amdgpu_switcheroo_ops = { + .set_gpu_state = amdgpu_switcheroo_set_state, + .reprobe = NULL, + .can_switch = amdgpu_switcheroo_can_switch, +}; + +/** + * amdgpu_device_ip_set_clockgating_state - set the CG state + * + * @dev: amdgpu_device pointer + * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.) + * @state: clockgating state (gate or ungate) + * + * Sets the requested clockgating state for all instances of + * the hardware IP specified. + * Returns the error code from the last instance. + */ +int amdgpu_device_ip_set_clockgating_state(void *dev, + enum amd_ip_block_type block_type, + enum amd_clockgating_state state) +{ + struct amdgpu_device *adev = dev; + int i, r = 0; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].version->type != block_type) + continue; + if (!adev->ip_blocks[i].version->funcs->set_clockgating_state) + continue; + r = adev->ip_blocks[i].version->funcs->set_clockgating_state( + &adev->ip_blocks[i], state); + if (r) + dev_err(adev->dev, + "set_clockgating_state of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, r); + } + return r; +} + +/** + * amdgpu_device_ip_set_powergating_state - set the PG state + * + * @dev: amdgpu_device pointer + * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.) + * @state: powergating state (gate or ungate) + * + * Sets the requested powergating state for all instances of + * the hardware IP specified. + * Returns the error code from the last instance. + */ +int amdgpu_device_ip_set_powergating_state(void *dev, + enum amd_ip_block_type block_type, + enum amd_powergating_state state) +{ + struct amdgpu_device *adev = dev; + int i, r = 0; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].version->type != block_type) + continue; + if (!adev->ip_blocks[i].version->funcs->set_powergating_state) + continue; + r = adev->ip_blocks[i].version->funcs->set_powergating_state( + &adev->ip_blocks[i], state); + if (r) + dev_err(adev->dev, + "set_powergating_state of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, r); + } + return r; +} + +/** + * amdgpu_device_ip_get_clockgating_state - get the CG state + * + * @adev: amdgpu_device pointer + * @flags: clockgating feature flags + * + * Walks the list of IPs on the device and updates the clockgating + * flags for each IP. + * Updates @flags with the feature flags for each hardware IP where + * clockgating is enabled. + */ +void amdgpu_device_ip_get_clockgating_state(struct amdgpu_device *adev, + u64 *flags) +{ + int i; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].version->funcs->get_clockgating_state) + adev->ip_blocks[i].version->funcs->get_clockgating_state( + &adev->ip_blocks[i], flags); + } +} + +/** + * amdgpu_device_ip_wait_for_idle - wait for idle + * + * @adev: amdgpu_device pointer + * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.) + * + * Waits for the request hardware IP to be idle. + * Returns 0 for success or a negative error code on failure. + */ +int amdgpu_device_ip_wait_for_idle(struct amdgpu_device *adev, + enum amd_ip_block_type block_type) +{ + int i, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].version->type == block_type) { + if (adev->ip_blocks[i].version->funcs->wait_for_idle) { + r = adev->ip_blocks[i].version->funcs->wait_for_idle( + &adev->ip_blocks[i]); + if (r) + return r; + } + break; + } + } + return 0; + +} + +/** + * amdgpu_device_ip_is_hw - is the hardware IP enabled + * + * @adev: amdgpu_device pointer + * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.) + * + * Check if the hardware IP is enable or not. + * Returns true if it the IP is enable, false if not. + */ +bool amdgpu_device_ip_is_hw(struct amdgpu_device *adev, + enum amd_ip_block_type block_type) +{ + int i; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (adev->ip_blocks[i].version->type == block_type) + return adev->ip_blocks[i].status.hw; + } + return false; +} + +/** + * amdgpu_device_ip_is_valid - is the hardware IP valid + * + * @adev: amdgpu_device pointer + * @block_type: Type of hardware IP (SMU, GFX, UVD, etc.) + * + * Check if the hardware IP is valid or not. + * Returns true if it the IP is valid, false if not. + */ +bool amdgpu_device_ip_is_valid(struct amdgpu_device *adev, + enum amd_ip_block_type block_type) +{ + int i; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (adev->ip_blocks[i].version->type == block_type) + return adev->ip_blocks[i].status.valid; + } + return false; + +} + +/** + * amdgpu_device_ip_get_ip_block - get a hw IP pointer + * + * @adev: amdgpu_device pointer + * @type: Type of hardware IP (SMU, GFX, UVD, etc.) + * + * Returns a pointer to the hardware IP block structure + * if it exists for the asic, otherwise NULL. + */ +struct amdgpu_ip_block * +amdgpu_device_ip_get_ip_block(struct amdgpu_device *adev, + enum amd_ip_block_type type) +{ + int i; + + for (i = 0; i < adev->num_ip_blocks; i++) + if (adev->ip_blocks[i].version->type == type) + return &adev->ip_blocks[i]; + + return NULL; +} + +/** + * amdgpu_device_ip_block_version_cmp + * + * @adev: amdgpu_device pointer + * @type: enum amd_ip_block_type + * @major: major version + * @minor: minor version + * + * return 0 if equal or greater + * return 1 if smaller or the ip_block doesn't exist + */ +int amdgpu_device_ip_block_version_cmp(struct amdgpu_device *adev, + enum amd_ip_block_type type, + u32 major, u32 minor) +{ + struct amdgpu_ip_block *ip_block = amdgpu_device_ip_get_ip_block(adev, type); + + if (ip_block && ((ip_block->version->major > major) || + ((ip_block->version->major == major) && + (ip_block->version->minor >= minor)))) + return 0; + + return 1; +} + +static const char *ip_block_names[] = { + [AMD_IP_BLOCK_TYPE_COMMON] = "common", + [AMD_IP_BLOCK_TYPE_GMC] = "gmc", + [AMD_IP_BLOCK_TYPE_IH] = "ih", + [AMD_IP_BLOCK_TYPE_SMC] = "smu", + [AMD_IP_BLOCK_TYPE_PSP] = "psp", + [AMD_IP_BLOCK_TYPE_DCE] = "dce", + [AMD_IP_BLOCK_TYPE_GFX] = "gfx", + [AMD_IP_BLOCK_TYPE_SDMA] = "sdma", + [AMD_IP_BLOCK_TYPE_UVD] = "uvd", + [AMD_IP_BLOCK_TYPE_VCE] = "vce", + [AMD_IP_BLOCK_TYPE_ACP] = "acp", + [AMD_IP_BLOCK_TYPE_VCN] = "vcn", + [AMD_IP_BLOCK_TYPE_MES] = "mes", + [AMD_IP_BLOCK_TYPE_JPEG] = "jpeg", + [AMD_IP_BLOCK_TYPE_VPE] = "vpe", + [AMD_IP_BLOCK_TYPE_UMSCH_MM] = "umsch_mm", + [AMD_IP_BLOCK_TYPE_ISP] = "isp", + [AMD_IP_BLOCK_TYPE_RAS] = "ras", +}; + +static const char *ip_block_name(struct amdgpu_device *adev, enum amd_ip_block_type type) +{ + int idx = (int)type; + + return idx < ARRAY_SIZE(ip_block_names) ? ip_block_names[idx] : "unknown"; +} + +/** + * amdgpu_device_ip_block_add + * + * @adev: amdgpu_device pointer + * @ip_block_version: pointer to the IP to add + * + * Adds the IP block driver information to the collection of IPs + * on the asic. + */ +int amdgpu_device_ip_block_add(struct amdgpu_device *adev, + const struct amdgpu_ip_block_version *ip_block_version) +{ + if (!ip_block_version) + return -EINVAL; + + switch (ip_block_version->type) { + case AMD_IP_BLOCK_TYPE_VCN: + if (adev->harvest_ip_mask & AMD_HARVEST_IP_VCN_MASK) + return 0; + break; + case AMD_IP_BLOCK_TYPE_JPEG: + if (adev->harvest_ip_mask & AMD_HARVEST_IP_JPEG_MASK) + return 0; + break; + default: + break; + } + + dev_info(adev->dev, "detected ip block number %d <%s_v%d_%d_%d> (%s)\n", + adev->num_ip_blocks, + ip_block_name(adev, ip_block_version->type), + ip_block_version->major, + ip_block_version->minor, + ip_block_version->rev, + ip_block_version->funcs->name); + + adev->ip_blocks[adev->num_ip_blocks].adev = adev; + + adev->ip_blocks[adev->num_ip_blocks++].version = ip_block_version; + + return 0; +} + +/** + * amdgpu_device_enable_virtual_display - enable virtual display feature + * + * @adev: amdgpu_device pointer + * + * Enabled the virtual display feature if the user has enabled it via + * the module parameter virtual_display. This feature provides a virtual + * display hardware on headless boards or in virtualized environments. + * This function parses and validates the configuration string specified by + * the user and configures the virtual display configuration (number of + * virtual connectors, crtcs, etc.) specified. + */ +static void amdgpu_device_enable_virtual_display(struct amdgpu_device *adev) +{ + adev->enable_virtual_display = false; + + if (amdgpu_virtual_display) { + const char *pci_address_name = pci_name(adev->pdev); + char *pciaddstr, *pciaddstr_tmp, *pciaddname_tmp, *pciaddname; + + pciaddstr = kstrdup(amdgpu_virtual_display, GFP_KERNEL); + pciaddstr_tmp = pciaddstr; + while ((pciaddname_tmp = strsep(&pciaddstr_tmp, ";"))) { + pciaddname = strsep(&pciaddname_tmp, ","); + if (!strcmp("all", pciaddname) + || !strcmp(pci_address_name, pciaddname)) { + long num_crtc; + int res = -1; + + adev->enable_virtual_display = true; + + if (pciaddname_tmp) + res = kstrtol(pciaddname_tmp, 10, + &num_crtc); + + if (!res) { + if (num_crtc < 1) + num_crtc = 1; + if (num_crtc > 6) + num_crtc = 6; + adev->mode_info.num_crtc = num_crtc; + } else { + adev->mode_info.num_crtc = 1; + } + break; + } + } + + dev_info( + adev->dev, + "virtual display string:%s, %s:virtual_display:%d, num_crtc:%d\n", + amdgpu_virtual_display, pci_address_name, + adev->enable_virtual_display, adev->mode_info.num_crtc); + + kfree(pciaddstr); + } +} + +void amdgpu_device_set_sriov_virtual_display(struct amdgpu_device *adev) +{ + if (amdgpu_sriov_vf(adev) && !adev->enable_virtual_display) { + adev->mode_info.num_crtc = 1; + adev->enable_virtual_display = true; + dev_info(adev->dev, "virtual_display:%d, num_crtc:%d\n", + adev->enable_virtual_display, + adev->mode_info.num_crtc); + } +} + +/** + * amdgpu_device_parse_gpu_info_fw - parse gpu info firmware + * + * @adev: amdgpu_device pointer + * + * Parses the asic configuration parameters specified in the gpu info + * firmware and makes them available to the driver for use in configuring + * the asic. + * Returns 0 on success, -EINVAL on failure. + */ +static int amdgpu_device_parse_gpu_info_fw(struct amdgpu_device *adev) +{ + const char *chip_name; + int err; + const struct gpu_info_firmware_header_v1_0 *hdr; + + adev->firmware.gpu_info_fw = NULL; + + switch (adev->asic_type) { + default: + return 0; + case CHIP_VEGA10: + chip_name = "vega10"; + break; + case CHIP_VEGA12: + chip_name = "vega12"; + break; + case CHIP_RAVEN: + if (adev->apu_flags & AMD_APU_IS_RAVEN2) + chip_name = "raven2"; + else if (adev->apu_flags & AMD_APU_IS_PICASSO) + chip_name = "picasso"; + else + chip_name = "raven"; + break; + case CHIP_ARCTURUS: + chip_name = "arcturus"; + break; + case CHIP_NAVI12: + if (adev->discovery.bin) + return 0; + chip_name = "navi12"; + break; + case CHIP_CYAN_SKILLFISH: + if (adev->discovery.bin) + return 0; + chip_name = "cyan_skillfish"; + break; + } + + err = amdgpu_ucode_request(adev, &adev->firmware.gpu_info_fw, + AMDGPU_UCODE_OPTIONAL, + "amdgpu/%s_gpu_info.bin", chip_name); + if (err) { + dev_err(adev->dev, + "Failed to get gpu_info firmware \"%s_gpu_info.bin\"\n", + chip_name); + goto out; + } + + hdr = (const struct gpu_info_firmware_header_v1_0 *)adev->firmware.gpu_info_fw->data; + amdgpu_ucode_print_gpu_info_hdr(&hdr->header); + + switch (hdr->version_major) { + case 1: + { + const struct gpu_info_firmware_v1_0 *gpu_info_fw = + (const struct gpu_info_firmware_v1_0 *)(adev->firmware.gpu_info_fw->data + + le32_to_cpu(hdr->header.ucode_array_offset_bytes)); + + /* + * Should be dropped when DAL no longer needs it. + */ + if (adev->asic_type == CHIP_NAVI12) + goto parse_soc_bounding_box; + + adev->gfx.config.max_shader_engines = le32_to_cpu(gpu_info_fw->gc_num_se); + adev->gfx.config.max_cu_per_sh = le32_to_cpu(gpu_info_fw->gc_num_cu_per_sh); + adev->gfx.config.max_sh_per_se = le32_to_cpu(gpu_info_fw->gc_num_sh_per_se); + adev->gfx.config.max_backends_per_se = le32_to_cpu(gpu_info_fw->gc_num_rb_per_se); + adev->gfx.config.max_texture_channel_caches = + le32_to_cpu(gpu_info_fw->gc_num_tccs); + adev->gfx.config.max_gprs = le32_to_cpu(gpu_info_fw->gc_num_gprs); + adev->gfx.config.max_gs_threads = le32_to_cpu(gpu_info_fw->gc_num_max_gs_thds); + adev->gfx.config.gs_vgt_table_depth = le32_to_cpu(gpu_info_fw->gc_gs_table_depth); + adev->gfx.config.gs_prim_buffer_depth = le32_to_cpu(gpu_info_fw->gc_gsprim_buff_depth); + adev->gfx.config.double_offchip_lds_buf = + le32_to_cpu(gpu_info_fw->gc_double_offchip_lds_buffer); + adev->gfx.cu_info.wave_front_size = le32_to_cpu(gpu_info_fw->gc_wave_size); + adev->gfx.cu_info.max_waves_per_simd = + le32_to_cpu(gpu_info_fw->gc_max_waves_per_simd); + adev->gfx.cu_info.max_scratch_slots_per_cu = + le32_to_cpu(gpu_info_fw->gc_max_scratch_slots_per_cu); + adev->gfx.cu_info.lds_size = le32_to_cpu(gpu_info_fw->gc_lds_size); + if (hdr->version_minor >= 1) { + const struct gpu_info_firmware_v1_1 *gpu_info_fw = + (const struct gpu_info_firmware_v1_1 *)(adev->firmware.gpu_info_fw->data + + le32_to_cpu(hdr->header.ucode_array_offset_bytes)); + adev->gfx.config.num_sc_per_sh = + le32_to_cpu(gpu_info_fw->num_sc_per_sh); + adev->gfx.config.num_packer_per_sc = + le32_to_cpu(gpu_info_fw->num_packer_per_sc); + } + +parse_soc_bounding_box: + /* + * soc bounding box info is not integrated in disocovery table, + * we always need to parse it from gpu info firmware if needed. + */ + if (hdr->version_minor == 2) { + const struct gpu_info_firmware_v1_2 *gpu_info_fw = + (const struct gpu_info_firmware_v1_2 *)(adev->firmware.gpu_info_fw->data + + le32_to_cpu(hdr->header.ucode_array_offset_bytes)); + adev->dm.soc_bounding_box = &gpu_info_fw->soc_bounding_box; + } + break; + } + default: + dev_err(adev->dev, + "Unsupported gpu_info table %d\n", hdr->header.ucode_version); + err = -EINVAL; + goto out; + } +out: + return err; +} + +static void amdgpu_uid_init(struct amdgpu_device *adev) +{ + /* Initialize the UID for the device */ + adev->uid_info = kzalloc(sizeof(struct amdgpu_uid), GFP_KERNEL); + if (!adev->uid_info) { + dev_warn(adev->dev, "Failed to allocate memory for UID\n"); + return; + } + adev->uid_info->adev = adev; +} + +static void amdgpu_uid_fini(struct amdgpu_device *adev) +{ + /* Free the UID memory */ + kfree(adev->uid_info); + adev->uid_info = NULL; +} + +/** + * amdgpu_device_ip_early_init - run early init for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Early initialization pass for hardware IPs. The hardware IPs that make + * up each asic are discovered each IP's early_init callback is run. This + * is the first stage in initializing the asic. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_early_init(struct amdgpu_device *adev) +{ + struct amdgpu_ip_block *ip_block; + struct pci_dev *parent; + bool total, skip_bios; + uint32_t bios_flags; + int i, r; + + amdgpu_device_enable_virtual_display(adev); + + if (amdgpu_sriov_vf(adev)) { + r = amdgpu_virt_request_full_gpu(adev, true); + if (r) + return r; + + r = amdgpu_virt_init_critical_region(adev); + if (r) + return r; + } + + switch (adev->asic_type) { +#ifdef CONFIG_DRM_AMDGPU_SI + case CHIP_VERDE: + case CHIP_TAHITI: + case CHIP_PITCAIRN: + case CHIP_OLAND: + case CHIP_HAINAN: + adev->family = AMDGPU_FAMILY_SI; + r = si_set_ip_blocks(adev); + if (r) + return r; + break; +#endif +#ifdef CONFIG_DRM_AMDGPU_CIK + case CHIP_BONAIRE: + case CHIP_HAWAII: + case CHIP_KAVERI: + case CHIP_KABINI: + case CHIP_MULLINS: + if (adev->flags & AMD_IS_APU) + adev->family = AMDGPU_FAMILY_KV; + else + adev->family = AMDGPU_FAMILY_CI; + + r = cik_set_ip_blocks(adev); + if (r) + return r; + break; +#endif + case CHIP_TOPAZ: + case CHIP_TONGA: + case CHIP_FIJI: + case CHIP_POLARIS10: + case CHIP_POLARIS11: + case CHIP_POLARIS12: + case CHIP_VEGAM: + case CHIP_CARRIZO: + case CHIP_STONEY: + if (adev->flags & AMD_IS_APU) + adev->family = AMDGPU_FAMILY_CZ; + else + adev->family = AMDGPU_FAMILY_VI; + + r = vi_set_ip_blocks(adev); + if (r) + return r; + break; + default: + r = amdgpu_discovery_set_ip_blocks(adev); + if (r) + return r; + break; + } + + /* Check for IP version 9.4.3 with A0 hardware */ + if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3) && + !amdgpu_device_get_rev_id(adev)) { + dev_err(adev->dev, "Unsupported A0 hardware\n"); + return -ENODEV; /* device unsupported - no device error */ + } + + if (amdgpu_has_atpx() && + (amdgpu_is_atpx_hybrid() || + amdgpu_has_atpx_dgpu_power_cntl()) && + ((adev->flags & AMD_IS_APU) == 0) && + !dev_is_removable(&adev->pdev->dev)) + adev->flags |= AMD_IS_PX; + + if (!(adev->flags & AMD_IS_APU)) { + parent = pcie_find_root_port(adev->pdev); + adev->has_pr3 = parent ? pci_pr3_present(parent) : false; + } + + adev->pm.pp_feature = amdgpu_pp_feature_mask; + if (amdgpu_sriov_vf(adev) || sched_policy == KFD_SCHED_POLICY_NO_HWS) + adev->pm.pp_feature &= ~PP_GFXOFF_MASK; + if (amdgpu_sriov_vf(adev) && adev->asic_type == CHIP_SIENNA_CICHLID) + adev->pm.pp_feature &= ~PP_OVERDRIVE_MASK; + if (!amdgpu_device_pcie_dynamic_switching_supported(adev)) + adev->pm.pp_feature &= ~PP_PCIE_DPM_MASK; + + adev->virt.is_xgmi_node_migrate_enabled = false; + if (amdgpu_sriov_vf(adev)) { + adev->virt.is_xgmi_node_migrate_enabled = + amdgpu_ip_version((adev), GC_HWIP, 0) == IP_VERSION(9, 4, 4); + } + + total = true; + for (i = 0; i < adev->num_ip_blocks; i++) { + ip_block = &adev->ip_blocks[i]; + + if ((amdgpu_ip_block_mask & (1 << i)) == 0) { + dev_warn(adev->dev, "disabled ip block: %d <%s>\n", i, + adev->ip_blocks[i].version->funcs->name); + adev->ip_blocks[i].status.valid = false; + } else if (ip_block->version->funcs->early_init) { + r = ip_block->version->funcs->early_init(ip_block); + if (r == -ENOENT) { + adev->ip_blocks[i].status.valid = false; + } else if (r) { + dev_err(adev->dev, + "early_init of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, + r); + total = false; + } else { + adev->ip_blocks[i].status.valid = true; + } + } else { + adev->ip_blocks[i].status.valid = true; + } + /* get the vbios after the asic_funcs are set up */ + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON) { + r = amdgpu_device_parse_gpu_info_fw(adev); + if (r) + return r; + + bios_flags = amdgpu_device_get_vbios_flags(adev); + skip_bios = !!(bios_flags & AMDGPU_VBIOS_SKIP); + /* Read BIOS */ + if (!skip_bios) { + bool optional = + !!(bios_flags & AMDGPU_VBIOS_OPTIONAL); + if (!amdgpu_get_bios(adev) && !optional) + return -EINVAL; + + if (optional && !adev->bios) + dev_info( + adev->dev, + "VBIOS image optional, proceeding without VBIOS image"); + + if (adev->bios) { + r = amdgpu_atombios_init(adev); + if (r) { + dev_err(adev->dev, + "amdgpu_atombios_init failed\n"); + amdgpu_vf_error_put( + adev, + AMDGIM_ERROR_VF_ATOMBIOS_INIT_FAIL, + 0, 0); + return r; + } + } + } + + /*get pf2vf msg info at it's earliest time*/ + if (amdgpu_sriov_vf(adev)) + amdgpu_virt_init_data_exchange(adev); + + } + } + if (!total) + return -ENODEV; + + if (adev->gmc.xgmi.supported) + amdgpu_xgmi_early_init(adev); + + if (amdgpu_is_multi_aid(adev)) + amdgpu_uid_init(adev); + ip_block = amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_GFX); + if (ip_block->status.valid != false) + amdgpu_amdkfd_device_probe(adev); + + adev->cg_flags &= amdgpu_cg_mask; + adev->pg_flags &= amdgpu_pg_mask; + + return 0; +} + +static int amdgpu_device_ip_hw_init_phase1(struct amdgpu_device *adev) +{ + int i, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.sw) + continue; + if (adev->ip_blocks[i].status.hw) + continue; + if (!amdgpu_ip_member_of_hwini( + adev, adev->ip_blocks[i].version->type)) + continue; + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON || + (amdgpu_sriov_vf(adev) && (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP)) || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH) { + r = adev->ip_blocks[i].version->funcs->hw_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, + "hw_init of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, + r); + return r; + } + adev->ip_blocks[i].status.hw = true; + } + } + + return 0; +} + +static int amdgpu_device_ip_hw_init_phase2(struct amdgpu_device *adev) +{ + int i, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.sw) + continue; + if (adev->ip_blocks[i].status.hw) + continue; + if (!amdgpu_ip_member_of_hwini( + adev, adev->ip_blocks[i].version->type)) + continue; + r = adev->ip_blocks[i].version->funcs->hw_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, + "hw_init of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, r); + return r; + } + adev->ip_blocks[i].status.hw = true; + } + + return 0; +} + +static int amdgpu_device_fw_loading(struct amdgpu_device *adev) +{ + int r = 0; + int i; + uint32_t smu_version; + + if (adev->asic_type >= CHIP_VEGA10) { + for (i = 0; i < adev->num_ip_blocks; i++) { + if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_PSP) + continue; + + if (!amdgpu_ip_member_of_hwini(adev, + AMD_IP_BLOCK_TYPE_PSP)) + break; + + if (!adev->ip_blocks[i].status.sw) + continue; + + /* no need to do the fw loading again if already done*/ + if (adev->ip_blocks[i].status.hw == true) + break; + + if (amdgpu_in_reset(adev) || adev->in_suspend) { + r = amdgpu_ip_block_resume(&adev->ip_blocks[i]); + if (r) + return r; + } else { + r = adev->ip_blocks[i].version->funcs->hw_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, + "hw_init of IP block <%s> failed %d\n", + adev->ip_blocks[i] + .version->funcs->name, + r); + return r; + } + adev->ip_blocks[i].status.hw = true; + } + break; + } + } + + if (!amdgpu_sriov_vf(adev) || adev->asic_type == CHIP_TONGA) + r = amdgpu_pm_load_smu_firmware(adev, &smu_version); + + return r; +} + +static int amdgpu_device_init_schedulers(struct amdgpu_device *adev) +{ + struct drm_sched_init_args args = { + .ops = &amdgpu_sched_ops, + .num_rqs = DRM_SCHED_PRIORITY_COUNT, + .timeout_wq = adev->reset_domain->wq, + .dev = adev->dev, + }; + long timeout; + int r, i; + + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { + struct amdgpu_ring *ring = adev->rings[i]; + + /* No need to setup the GPU scheduler for rings that don't need it */ + if (!ring || ring->no_scheduler) + continue; + + switch (ring->funcs->type) { + case AMDGPU_RING_TYPE_GFX: + timeout = adev->gfx_timeout; + break; + case AMDGPU_RING_TYPE_COMPUTE: + timeout = adev->compute_timeout; + break; + case AMDGPU_RING_TYPE_SDMA: + timeout = adev->sdma_timeout; + break; + default: + timeout = adev->video_timeout; + break; + } + + args.timeout = timeout; + args.credit_limit = ring->num_hw_submission; + args.score = ring->sched_score; + args.name = ring->name; + + r = drm_sched_init(&ring->sched, &args); + if (r) { + dev_err(adev->dev, + "Failed to create scheduler on ring %s.\n", + ring->name); + return r; + } + r = amdgpu_uvd_entity_init(adev, ring); + if (r) { + dev_err(adev->dev, + "Failed to create UVD scheduling entity on ring %s.\n", + ring->name); + return r; + } + r = amdgpu_vce_entity_init(adev, ring); + if (r) { + dev_err(adev->dev, + "Failed to create VCE scheduling entity on ring %s.\n", + ring->name); + return r; + } + } + + if (adev->xcp_mgr) + amdgpu_xcp_update_partition_sched_list(adev); + + return 0; +} + + +/** + * amdgpu_device_ip_init - run init for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Main initialization pass for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked and the sw_init and hw_init callbacks + * are run. sw_init initializes the software state associated with each IP + * and hw_init initializes the hardware associated with each IP. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_init(struct amdgpu_device *adev) +{ + bool init_badpage; + int i, r; + + r = amdgpu_ras_init(adev); + if (r) + return r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].version->funcs->sw_init) { + r = adev->ip_blocks[i].version->funcs->sw_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, + "sw_init of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, + r); + goto init_failed; + } + } + adev->ip_blocks[i].status.sw = true; + + if (!amdgpu_ip_member_of_hwini( + adev, adev->ip_blocks[i].version->type)) + continue; + + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON) { + /* need to do common hw init early so everything is set up for gmc */ + r = adev->ip_blocks[i].version->funcs->hw_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, "hw_init %d failed %d\n", i, + r); + goto init_failed; + } + adev->ip_blocks[i].status.hw = true; + } else if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) { + /* need to do gmc hw init early so we can allocate gpu mem */ + /* Try to reserve bad pages early */ + if (amdgpu_sriov_vf(adev)) + amdgpu_virt_exchange_data(adev); + + r = amdgpu_device_mem_scratch_init(adev); + if (r) { + dev_err(adev->dev, + "amdgpu_mem_scratch_init failed %d\n", + r); + goto init_failed; + } + r = adev->ip_blocks[i].version->funcs->hw_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, "hw_init %d failed %d\n", i, + r); + goto init_failed; + } + r = amdgpu_device_wb_init(adev); + if (r) { + dev_err(adev->dev, + "amdgpu_device_wb_init failed %d\n", r); + goto init_failed; + } + adev->ip_blocks[i].status.hw = true; + + /* right after GMC hw init, we create CSA */ + if (adev->gfx.mcbp) { + r = amdgpu_allocate_static_csa(adev, &adev->virt.csa_obj, + AMDGPU_GEM_DOMAIN_VRAM | + AMDGPU_GEM_DOMAIN_GTT, + AMDGPU_CSA_SIZE); + if (r) { + dev_err(adev->dev, + "allocate CSA failed %d\n", r); + goto init_failed; + } + } + + r = amdgpu_seq64_init(adev); + if (r) { + dev_err(adev->dev, "allocate seq64 failed %d\n", + r); + goto init_failed; + } + } + } + + if (amdgpu_sriov_vf(adev)) + amdgpu_virt_init_data_exchange(adev); + + r = amdgpu_ib_pool_init(adev); + if (r) { + dev_err(adev->dev, "IB initialization failed (%d).\n", r); + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_IB_INIT_FAIL, 0, r); + goto init_failed; + } + + r = amdgpu_ucode_create_bo(adev); /* create ucode bo when sw_init complete*/ + if (r) + goto init_failed; + + r = amdgpu_device_ip_hw_init_phase1(adev); + if (r) + goto init_failed; + + r = amdgpu_device_fw_loading(adev); + if (r) + goto init_failed; + + r = amdgpu_device_ip_hw_init_phase2(adev); + if (r) + goto init_failed; + + /* + * retired pages will be loaded from eeprom and reserved here, + * it should be called after amdgpu_device_ip_hw_init_phase2 since + * for some ASICs the RAS EEPROM code relies on SMU fully functioning + * for I2C communication which only true at this point. + * + * amdgpu_ras_recovery_init may fail, but the upper only cares the + * failure from bad gpu situation and stop amdgpu init process + * accordingly. For other failed cases, it will still release all + * the resource and print error message, rather than returning one + * negative value to upper level. + * + * Note: theoretically, this should be called before all vram allocations + * to protect retired page from abusing + */ + init_badpage = (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI); + r = amdgpu_ras_recovery_init(adev, init_badpage); + if (r) + goto init_failed; + + /** + * In case of XGMI grab extra reference for reset domain for this device + */ + if (adev->gmc.xgmi.num_physical_nodes > 1) { + if (amdgpu_xgmi_add_device(adev) == 0) { + if (!amdgpu_sriov_vf(adev)) { + struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev); + + if (WARN_ON(!hive)) { + r = -ENOENT; + goto init_failed; + } + + if (!hive->reset_domain || + !amdgpu_reset_get_reset_domain(hive->reset_domain)) { + r = -ENOENT; + amdgpu_put_xgmi_hive(hive); + goto init_failed; + } + + /* Drop the early temporary reset domain we created for device */ + amdgpu_reset_put_reset_domain(adev->reset_domain); + adev->reset_domain = hive->reset_domain; + amdgpu_put_xgmi_hive(hive); + } + } + } + + r = amdgpu_device_init_schedulers(adev); + if (r) + goto init_failed; + + if (adev->mman.buffer_funcs_ring->sched.ready) + amdgpu_ttm_set_buffer_funcs_status(adev, true); + + /* Don't init kfd if whole hive need to be reset during init */ + if (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI) { + kgd2kfd_init_zone_device(adev); + amdgpu_amdkfd_device_init(adev); + } + + amdgpu_fru_get_product_info(adev); + + if (!amdgpu_sriov_vf(adev) || amdgpu_sriov_ras_cper_en(adev)) + r = amdgpu_cper_init(adev); + +init_failed: + + return r; +} + +/** + * amdgpu_device_fill_reset_magic - writes reset magic to gart pointer + * + * @adev: amdgpu_device pointer + * + * Writes a reset magic value to the gart pointer in VRAM. The driver calls + * this function before a GPU reset. If the value is retained after a + * GPU reset, VRAM has not been lost. Some GPU resets may destroy VRAM contents. + */ +static void amdgpu_device_fill_reset_magic(struct amdgpu_device *adev) +{ + memcpy(adev->reset_magic, adev->gart.ptr, AMDGPU_RESET_MAGIC_NUM); +} + +/** + * amdgpu_device_check_vram_lost - check if vram is valid + * + * @adev: amdgpu_device pointer + * + * Checks the reset magic value written to the gart pointer in VRAM. + * The driver calls this after a GPU reset to see if the contents of + * VRAM is lost or now. + * returns true if vram is lost, false if not. + */ +static bool amdgpu_device_check_vram_lost(struct amdgpu_device *adev) +{ + if (memcmp(adev->gart.ptr, adev->reset_magic, + AMDGPU_RESET_MAGIC_NUM)) + return true; + + if (!amdgpu_in_reset(adev)) + return false; + + /* + * For all ASICs with baco/mode1 reset, the VRAM is + * always assumed to be lost. + */ + switch (amdgpu_asic_reset_method(adev)) { + case AMD_RESET_METHOD_LEGACY: + case AMD_RESET_METHOD_LINK: + case AMD_RESET_METHOD_BACO: + case AMD_RESET_METHOD_MODE1: + return true; + default: + return false; + } +} + +/** + * amdgpu_device_set_cg_state - set clockgating for amdgpu device + * + * @adev: amdgpu_device pointer + * @state: clockgating state (gate or ungate) + * + * The list of all the hardware IPs that make up the asic is walked and the + * set_clockgating_state callbacks are run. + * Late initialization pass enabling clockgating for hardware IPs. + * Fini or suspend, pass disabling clockgating for hardware IPs. + * Returns 0 on success, negative error code on failure. + */ + +int amdgpu_device_set_cg_state(struct amdgpu_device *adev, + enum amd_clockgating_state state) +{ + int i, j, r; + + if (amdgpu_emu_mode == 1) + return 0; + + for (j = 0; j < adev->num_ip_blocks; j++) { + i = state == AMD_CG_STATE_GATE ? j : adev->num_ip_blocks - j - 1; + if (!adev->ip_blocks[i].status.late_initialized) + continue; + /* skip CG for GFX, SDMA on S0ix */ + if (adev->in_s0ix && + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SDMA)) + continue; + /* skip CG for VCE/UVD, it's handled specially */ + if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD && + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE && + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCN && + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_JPEG && + adev->ip_blocks[i].version->funcs->set_clockgating_state) { + /* enable clockgating to save power */ + r = adev->ip_blocks[i].version->funcs->set_clockgating_state(&adev->ip_blocks[i], + state); + if (r) { + dev_err(adev->dev, + "set_clockgating_state(gate) of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, + r); + return r; + } + } + } + + return 0; +} + +int amdgpu_device_set_pg_state(struct amdgpu_device *adev, + enum amd_powergating_state state) +{ + int i, j, r; + + if (amdgpu_emu_mode == 1) + return 0; + + for (j = 0; j < adev->num_ip_blocks; j++) { + i = state == AMD_PG_STATE_GATE ? j : adev->num_ip_blocks - j - 1; + if (!adev->ip_blocks[i].status.late_initialized) + continue; + /* skip PG for GFX, SDMA on S0ix */ + if (adev->in_s0ix && + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SDMA)) + continue; + /* skip CG for VCE/UVD/VPE, it's handled specially */ + if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD && + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE && + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCN && + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VPE && + adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_JPEG && + adev->ip_blocks[i].version->funcs->set_powergating_state) { + /* enable powergating to save power */ + r = adev->ip_blocks[i].version->funcs->set_powergating_state(&adev->ip_blocks[i], + state); + if (r) { + dev_err(adev->dev, + "set_powergating_state(gate) of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, + r); + return r; + } + } + } + return 0; +} + +static int amdgpu_device_enable_mgpu_fan_boost(void) +{ + struct amdgpu_gpu_instance *gpu_ins; + struct amdgpu_device *adev; + int i, ret = 0; + + mutex_lock(&mgpu_info.mutex); + + /* + * MGPU fan boost feature should be enabled + * only when there are two or more dGPUs in + * the system + */ + if (mgpu_info.num_dgpu < 2) + goto out; + + for (i = 0; i < mgpu_info.num_dgpu; i++) { + gpu_ins = &(mgpu_info.gpu_ins[i]); + adev = gpu_ins->adev; + if (!(adev->flags & AMD_IS_APU || amdgpu_sriov_multi_vf_mode(adev)) && + !gpu_ins->mgpu_fan_enabled) { + ret = amdgpu_dpm_enable_mgpu_fan_boost(adev); + if (ret) + break; + + gpu_ins->mgpu_fan_enabled = 1; + } + } + +out: + mutex_unlock(&mgpu_info.mutex); + + return ret; +} + +/** + * amdgpu_device_ip_late_init - run late init for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Late initialization pass for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked and the late_init callbacks are run. + * late_init covers any special initialization that an IP requires + * after all of the have been initialized or something that needs to happen + * late in the init process. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_late_init(struct amdgpu_device *adev) +{ + struct amdgpu_gpu_instance *gpu_instance; + int i = 0, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.hw) + continue; + if (adev->ip_blocks[i].version->funcs->late_init) { + r = adev->ip_blocks[i].version->funcs->late_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, + "late_init of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, + r); + return r; + } + } + adev->ip_blocks[i].status.late_initialized = true; + } + + r = amdgpu_ras_late_init(adev); + if (r) { + dev_err(adev->dev, "amdgpu_ras_late_init failed %d", r); + return r; + } + + if (!amdgpu_reset_in_recovery(adev)) + amdgpu_ras_set_error_query_ready(adev, true); + + amdgpu_device_set_cg_state(adev, AMD_CG_STATE_GATE); + amdgpu_device_set_pg_state(adev, AMD_PG_STATE_GATE); + + amdgpu_device_fill_reset_magic(adev); + + r = amdgpu_device_enable_mgpu_fan_boost(); + if (r) + dev_err(adev->dev, "enable mgpu fan boost failed (%d).\n", r); + + /* For passthrough configuration on arcturus and aldebaran, enable special handling SBR */ + if (amdgpu_passthrough(adev) && + ((adev->asic_type == CHIP_ARCTURUS && adev->gmc.xgmi.num_physical_nodes > 1) || + adev->asic_type == CHIP_ALDEBARAN)) + amdgpu_dpm_handle_passthrough_sbr(adev, true); + + if (adev->gmc.xgmi.num_physical_nodes > 1) { + mutex_lock(&mgpu_info.mutex); + + /* + * Reset device p-state to low as this was booted with high. + * + * This should be performed only after all devices from the same + * hive get initialized. + * + * However, it's unknown how many device in the hive in advance. + * As this is counted one by one during devices initializations. + * + * So, we wait for all XGMI interlinked devices initialized. + * This may bring some delays as those devices may come from + * different hives. But that should be OK. + */ + if (mgpu_info.num_dgpu == adev->gmc.xgmi.num_physical_nodes) { + for (i = 0; i < mgpu_info.num_gpu; i++) { + gpu_instance = &(mgpu_info.gpu_ins[i]); + if (gpu_instance->adev->flags & AMD_IS_APU) + continue; + + r = amdgpu_xgmi_set_pstate(gpu_instance->adev, + AMDGPU_XGMI_PSTATE_MIN); + if (r) { + dev_err(adev->dev, + "pstate setting failed (%d).\n", + r); + break; + } + } + } + + mutex_unlock(&mgpu_info.mutex); + } + + return 0; +} + +static void amdgpu_ip_block_hw_fini(struct amdgpu_ip_block *ip_block) +{ + struct amdgpu_device *adev = ip_block->adev; + int r; + + if (!ip_block->version->funcs->hw_fini) { + dev_err(adev->dev, "hw_fini of IP block <%s> not defined\n", + ip_block->version->funcs->name); + } else { + r = ip_block->version->funcs->hw_fini(ip_block); + /* XXX handle errors */ + if (r) { + dev_dbg(adev->dev, + "hw_fini of IP block <%s> failed %d\n", + ip_block->version->funcs->name, r); + } + } + + ip_block->status.hw = false; +} + +/** + * amdgpu_device_smu_fini_early - smu hw_fini wrapper + * + * @adev: amdgpu_device pointer + * + * For ASICs need to disable SMC first + */ +static void amdgpu_device_smu_fini_early(struct amdgpu_device *adev) +{ + int i; + + if (amdgpu_ip_version(adev, GC_HWIP, 0) > IP_VERSION(9, 0, 0)) + return; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.hw) + continue; + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) { + amdgpu_ip_block_hw_fini(&adev->ip_blocks[i]); + break; + } + } +} + +static int amdgpu_device_ip_fini_early(struct amdgpu_device *adev) +{ + int i, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].version->funcs->early_fini) + continue; + + r = adev->ip_blocks[i].version->funcs->early_fini(&adev->ip_blocks[i]); + if (r) { + dev_dbg(adev->dev, + "early_fini of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, r); + } + } + + amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE); + amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE); + + amdgpu_amdkfd_suspend(adev, true); + amdgpu_userq_suspend(adev); + + /* Workaround for ASICs need to disable SMC first */ + amdgpu_device_smu_fini_early(adev); + + for (i = adev->num_ip_blocks - 1; i >= 0; i--) { + if (!adev->ip_blocks[i].status.hw) + continue; + + amdgpu_ip_block_hw_fini(&adev->ip_blocks[i]); + } + + if (amdgpu_sriov_vf(adev)) { + if (amdgpu_virt_release_full_gpu(adev, false)) + dev_err(adev->dev, + "failed to release exclusive mode on fini\n"); + } + + /* + * Driver reload on the APU can fail due to firmware validation because + * the PSP is always running, as it is shared across the whole SoC. + * This same issue does not occur on dGPU because it has a mechanism + * that checks whether the PSP is running. A solution for those issues + * in the APU is to trigger a GPU reset, but this should be done during + * the unload phase to avoid adding boot latency and screen flicker. + */ + if ((adev->flags & AMD_IS_APU) && !adev->gmc.is_app_apu) { + r = amdgpu_asic_reset(adev); + if (r) + dev_err(adev->dev, "asic reset on %s failed\n", __func__); + } + + return 0; +} + +/** + * amdgpu_device_ip_fini - run fini for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Main teardown pass for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked and the hw_fini and sw_fini callbacks + * are run. hw_fini tears down the hardware associated with each IP + * and sw_fini tears down any software state associated with each IP. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_fini(struct amdgpu_device *adev) +{ + int i, r; + + amdgpu_cper_fini(adev); + + if (amdgpu_sriov_vf(adev) && adev->virt.ras_init_done) + amdgpu_virt_release_ras_err_handler_data(adev); + + if (adev->gmc.xgmi.num_physical_nodes > 1) + amdgpu_xgmi_remove_device(adev); + + amdgpu_amdkfd_device_fini_sw(adev); + + for (i = adev->num_ip_blocks - 1; i >= 0; i--) { + if (!adev->ip_blocks[i].status.sw) + continue; + + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) { + amdgpu_ucode_free_bo(adev); + amdgpu_free_static_csa(&adev->virt.csa_obj); + amdgpu_device_wb_fini(adev); + amdgpu_device_mem_scratch_fini(adev); + amdgpu_ib_pool_fini(adev); + amdgpu_seq64_fini(adev); + amdgpu_doorbell_fini(adev); + } + if (adev->ip_blocks[i].version->funcs->sw_fini) { + r = adev->ip_blocks[i].version->funcs->sw_fini(&adev->ip_blocks[i]); + /* XXX handle errors */ + if (r) { + dev_dbg(adev->dev, + "sw_fini of IP block <%s> failed %d\n", + adev->ip_blocks[i].version->funcs->name, + r); + } + } + adev->ip_blocks[i].status.sw = false; + adev->ip_blocks[i].status.valid = false; + } + + for (i = adev->num_ip_blocks - 1; i >= 0; i--) { + if (!adev->ip_blocks[i].status.late_initialized) + continue; + if (adev->ip_blocks[i].version->funcs->late_fini) + adev->ip_blocks[i].version->funcs->late_fini(&adev->ip_blocks[i]); + adev->ip_blocks[i].status.late_initialized = false; + } + + amdgpu_ras_fini(adev); + amdgpu_uid_fini(adev); + + return 0; +} + +/** + * amdgpu_device_delayed_init_work_handler - work handler for IB tests + * + * @work: work_struct. + */ +static void amdgpu_device_delayed_init_work_handler(struct work_struct *work) +{ + struct amdgpu_device *adev = + container_of(work, struct amdgpu_device, delayed_init_work.work); + int r; + + r = amdgpu_ib_ring_tests(adev); + if (r) + dev_err(adev->dev, "ib ring test failed (%d).\n", r); +} + +static void amdgpu_device_delay_enable_gfx_off(struct work_struct *work) +{ + struct amdgpu_device *adev = + container_of(work, struct amdgpu_device, gfx.gfx_off_delay_work.work); + + WARN_ON_ONCE(adev->gfx.gfx_off_state); + WARN_ON_ONCE(adev->gfx.gfx_off_req_count); + + if (!amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, true, 0)) + adev->gfx.gfx_off_state = true; +} + +/** + * amdgpu_device_ip_suspend_phase1 - run suspend for hardware IPs (phase 1) + * + * @adev: amdgpu_device pointer + * + * Main suspend function for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked, clockgating is disabled and the + * suspend callbacks are run. suspend puts the hardware and software state + * in each IP into a state suitable for suspend. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev) +{ + int i, r, rec; + + amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE); + amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE); + + /* + * Per PMFW team's suggestion, driver needs to handle gfxoff + * and df cstate features disablement for gpu reset(e.g. Mode1Reset) + * scenario. Add the missing df cstate disablement here. + */ + if (amdgpu_dpm_set_df_cstate(adev, DF_CSTATE_DISALLOW)) + dev_warn(adev->dev, "Failed to disallow df cstate"); + + for (i = adev->num_ip_blocks - 1; i >= 0; i--) { + if (!adev->ip_blocks[i].status.valid) + continue; + + /* displays are handled separately */ + if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_DCE) + continue; + + r = amdgpu_ip_block_suspend(&adev->ip_blocks[i]); + if (r) + goto unwind; + } + + return 0; +unwind: + rec = amdgpu_device_ip_resume_phase3(adev); + if (rec) + dev_err(adev->dev, + "amdgpu_device_ip_resume_phase3 failed during unwind: %d\n", + rec); + + amdgpu_dpm_set_df_cstate(adev, DF_CSTATE_ALLOW); + + amdgpu_device_set_pg_state(adev, AMD_PG_STATE_GATE); + amdgpu_device_set_cg_state(adev, AMD_CG_STATE_GATE); + + return r; +} + +/** + * amdgpu_device_ip_suspend_phase2 - run suspend for hardware IPs (phase 2) + * + * @adev: amdgpu_device pointer + * + * Main suspend function for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked, clockgating is disabled and the + * suspend callbacks are run. suspend puts the hardware and software state + * in each IP into a state suitable for suspend. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev) +{ + int i, r, rec; + + if (adev->in_s0ix) + amdgpu_dpm_gfx_state_change(adev, sGpuChangeState_D3Entry); + + for (i = adev->num_ip_blocks - 1; i >= 0; i--) { + if (!adev->ip_blocks[i].status.valid) + continue; + /* displays are handled in phase1 */ + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) + continue; + /* PSP lost connection when err_event_athub occurs */ + if (amdgpu_ras_intr_triggered() && + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP) { + adev->ip_blocks[i].status.hw = false; + continue; + } + + /* skip unnecessary suspend if we do not initialize them yet */ + if (!amdgpu_ip_member_of_hwini( + adev, adev->ip_blocks[i].version->type)) + continue; + + /* Since we skip suspend for S0i3, we need to cancel the delayed + * idle work here as the suspend callback never gets called. + */ + if (adev->in_s0ix && + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX && + amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(10, 0, 0)) + cancel_delayed_work_sync(&adev->gfx.idle_work); + /* skip suspend of gfx/mes and psp for S0ix + * gfx is in gfxoff state, so on resume it will exit gfxoff just + * like at runtime. PSP is also part of the always on hardware + * so no need to suspend it. + */ + if (adev->in_s0ix && + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GFX || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_MES)) + continue; + + /* SDMA 5.x+ is part of GFX power domain so it's covered by GFXOFF */ + if (adev->in_s0ix && + (amdgpu_ip_version(adev, SDMA0_HWIP, 0) >= + IP_VERSION(5, 0, 0)) && + (adev->ip_blocks[i].version->type == + AMD_IP_BLOCK_TYPE_SDMA)) + continue; + + /* Once swPSP provides the IMU, RLC FW binaries to TOS during cold-boot. + * These are in TMR, hence are expected to be reused by PSP-TOS to reload + * from this location and RLC Autoload automatically also gets loaded + * from here based on PMFW -> PSP message during re-init sequence. + * Therefore, the psp suspend & resume should be skipped to avoid destroy + * the TMR and reload FWs again for IMU enabled APU ASICs. + */ + if (amdgpu_in_reset(adev) && + (adev->flags & AMD_IS_APU) && adev->gfx.imu.funcs && + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP) + continue; + + r = amdgpu_ip_block_suspend(&adev->ip_blocks[i]); + if (r) + goto unwind; + + /* handle putting the SMC in the appropriate state */ + if (!amdgpu_sriov_vf(adev)) { + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) { + r = amdgpu_dpm_set_mp1_state(adev, adev->mp1_state); + if (r) { + dev_err(adev->dev, + "SMC failed to set mp1 state %d, %d\n", + adev->mp1_state, r); + goto unwind; + } + } + } + } + + return 0; +unwind: + /* suspend phase 2 = resume phase 1 + resume phase 2 */ + rec = amdgpu_device_ip_resume_phase1(adev); + if (rec) { + dev_err(adev->dev, + "amdgpu_device_ip_resume_phase1 failed during unwind: %d\n", + rec); + return r; + } + + rec = amdgpu_device_fw_loading(adev); + if (rec) { + dev_err(adev->dev, + "amdgpu_device_fw_loading failed during unwind: %d\n", + rec); + return r; + } + + rec = amdgpu_device_ip_resume_phase2(adev); + if (rec) { + dev_err(adev->dev, + "amdgpu_device_ip_resume_phase2 failed during unwind: %d\n", + rec); + return r; + } + + return r; +} + +/** + * amdgpu_device_ip_suspend - run suspend for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Main suspend function for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked, clockgating is disabled and the + * suspend callbacks are run. suspend puts the hardware and software state + * in each IP into a state suitable for suspend. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_suspend(struct amdgpu_device *adev) +{ + int r; + + if (amdgpu_sriov_vf(adev)) { + amdgpu_virt_fini_data_exchange(adev); + amdgpu_virt_request_full_gpu(adev, false); + } + + amdgpu_ttm_set_buffer_funcs_status(adev, false); + + r = amdgpu_device_ip_suspend_phase1(adev); + if (r) + return r; + r = amdgpu_device_ip_suspend_phase2(adev); + + if (amdgpu_sriov_vf(adev)) + amdgpu_virt_release_full_gpu(adev, false); + + return r; +} + +static int amdgpu_device_ip_reinit_early_sriov(struct amdgpu_device *adev) +{ + int i, r; + + static enum amd_ip_block_type ip_order[] = { + AMD_IP_BLOCK_TYPE_COMMON, + AMD_IP_BLOCK_TYPE_GMC, + AMD_IP_BLOCK_TYPE_PSP, + AMD_IP_BLOCK_TYPE_IH, + }; + + for (i = 0; i < adev->num_ip_blocks; i++) { + int j; + struct amdgpu_ip_block *block; + + block = &adev->ip_blocks[i]; + block->status.hw = false; + + for (j = 0; j < ARRAY_SIZE(ip_order); j++) { + + if (block->version->type != ip_order[j] || + !block->status.valid) + continue; + + r = block->version->funcs->hw_init(&adev->ip_blocks[i]); + if (r) { + dev_err(adev->dev, "RE-INIT-early: %s failed\n", + block->version->funcs->name); + return r; + } + block->status.hw = true; + } + } + + return 0; +} + +static int amdgpu_device_ip_reinit_late_sriov(struct amdgpu_device *adev) +{ + struct amdgpu_ip_block *block; + int i, r = 0; + + static enum amd_ip_block_type ip_order[] = { + AMD_IP_BLOCK_TYPE_SMC, + AMD_IP_BLOCK_TYPE_DCE, + AMD_IP_BLOCK_TYPE_GFX, + AMD_IP_BLOCK_TYPE_SDMA, + AMD_IP_BLOCK_TYPE_MES, + AMD_IP_BLOCK_TYPE_UVD, + AMD_IP_BLOCK_TYPE_VCE, + AMD_IP_BLOCK_TYPE_VCN, + AMD_IP_BLOCK_TYPE_JPEG + }; + + for (i = 0; i < ARRAY_SIZE(ip_order); i++) { + block = amdgpu_device_ip_get_ip_block(adev, ip_order[i]); + + if (!block) + continue; + + if (block->status.valid && !block->status.hw) { + if (block->version->type == AMD_IP_BLOCK_TYPE_SMC) { + r = amdgpu_ip_block_resume(block); + } else { + r = block->version->funcs->hw_init(block); + } + + if (r) { + dev_err(adev->dev, "RE-INIT-late: %s failed\n", + block->version->funcs->name); + break; + } + block->status.hw = true; + } + } + + return r; +} + +/** + * amdgpu_device_ip_resume_phase1 - run resume for hardware IPs + * + * @adev: amdgpu_device pointer + * + * First resume function for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked and the resume callbacks are run for + * COMMON, GMC, and IH. resume puts the hardware into a functional state + * after a suspend and updates the software state as necessary. This + * function is also used for restoring the GPU after a GPU reset. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_resume_phase1(struct amdgpu_device *adev) +{ + int i, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid || adev->ip_blocks[i].status.hw) + continue; + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH || + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP && amdgpu_sriov_vf(adev))) { + + r = amdgpu_ip_block_resume(&adev->ip_blocks[i]); + if (r) + return r; + } + } + + return 0; +} + +/** + * amdgpu_device_ip_resume_phase2 - run resume for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Second resume function for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked and the resume callbacks are run for + * all blocks except COMMON, GMC, and IH. resume puts the hardware into a + * functional state after a suspend and updates the software state as + * necessary. This function is also used for restoring the GPU after a GPU + * reset. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_resume_phase2(struct amdgpu_device *adev) +{ + int i, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid || adev->ip_blocks[i].status.hw) + continue; + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_COMMON || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP) + continue; + r = amdgpu_ip_block_resume(&adev->ip_blocks[i]); + if (r) + return r; + } + + return 0; +} + +/** + * amdgpu_device_ip_resume_phase3 - run resume for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Third resume function for hardware IPs. The list of all the hardware + * IPs that make up the asic is walked and the resume callbacks are run for + * all DCE. resume puts the hardware into a functional state after a suspend + * and updates the software state as necessary. This function is also used + * for restoring the GPU after a GPU reset. + * + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_resume_phase3(struct amdgpu_device *adev) +{ + int i, r; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid || adev->ip_blocks[i].status.hw) + continue; + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) { + r = amdgpu_ip_block_resume(&adev->ip_blocks[i]); + if (r) + return r; + } + } + + return 0; +} + +/** + * amdgpu_device_ip_resume - run resume for hardware IPs + * + * @adev: amdgpu_device pointer + * + * Main resume function for hardware IPs. The hardware IPs + * are split into two resume functions because they are + * also used in recovering from a GPU reset and some additional + * steps need to be take between them. In this case (S3/S4) they are + * run sequentially. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_resume(struct amdgpu_device *adev) +{ + int r; + + r = amdgpu_device_ip_resume_phase1(adev); + if (r) + return r; + + r = amdgpu_device_fw_loading(adev); + if (r) + return r; + + r = amdgpu_device_ip_resume_phase2(adev); + + if (adev->mman.buffer_funcs_ring->sched.ready) + amdgpu_ttm_set_buffer_funcs_status(adev, true); + + if (r) + return r; + + amdgpu_fence_driver_hw_init(adev); + + r = amdgpu_device_ip_resume_phase3(adev); + + return r; +} + +/** + * amdgpu_device_detect_sriov_bios - determine if the board supports SR-IOV + * + * @adev: amdgpu_device pointer + * + * Query the VBIOS data tables to determine if the board supports SR-IOV. + */ +static void amdgpu_device_detect_sriov_bios(struct amdgpu_device *adev) +{ + if (amdgpu_sriov_vf(adev)) { + if (adev->is_atom_fw) { + if (amdgpu_atomfirmware_gpu_virtualization_supported(adev)) + adev->virt.caps |= AMDGPU_SRIOV_CAPS_SRIOV_VBIOS; + } else { + if (amdgpu_atombios_has_gpu_virtualization_table(adev)) + adev->virt.caps |= AMDGPU_SRIOV_CAPS_SRIOV_VBIOS; + } + + if (!(adev->virt.caps & AMDGPU_SRIOV_CAPS_SRIOV_VBIOS)) + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_NO_VBIOS, 0, 0); + } +} + +/** + * amdgpu_device_asic_has_dc_support - determine if DC supports the asic + * + * @pdev : pci device context + * @asic_type: AMD asic type + * + * Check if there is DC (new modesetting infrastructre) support for an asic. + * returns true if DC has support, false if not. + */ +bool amdgpu_device_asic_has_dc_support(struct pci_dev *pdev, + enum amd_asic_type asic_type) +{ + switch (asic_type) { +#ifdef CONFIG_DRM_AMDGPU_SI + case CHIP_HAINAN: +#endif + case CHIP_TOPAZ: + /* chips with no display hardware */ + return false; +#if defined(CONFIG_DRM_AMD_DC) + case CHIP_TAHITI: + case CHIP_PITCAIRN: + case CHIP_VERDE: + case CHIP_OLAND: + return amdgpu_dc != 0 && IS_ENABLED(CONFIG_DRM_AMD_DC_SI); + case CHIP_KAVERI: + case CHIP_KABINI: + case CHIP_MULLINS: + /* + * We have systems in the wild with these ASICs that require + * TRAVIS and NUTMEG support which is not supported with DC. + * + * Fallback to the non-DC driver here by default so as not to + * cause regressions. + */ + return amdgpu_dc > 0; + default: + return amdgpu_dc != 0; +#else + default: + if (amdgpu_dc > 0) + dev_info_once( + &pdev->dev, + "Display Core has been requested via kernel parameter but isn't supported by ASIC, ignoring\n"); + return false; +#endif + } +} + +/** + * amdgpu_device_has_dc_support - check if dc is supported + * + * @adev: amdgpu_device pointer + * + * Returns true for supported, false for not supported + */ +bool amdgpu_device_has_dc_support(struct amdgpu_device *adev) +{ + if (adev->enable_virtual_display || + (adev->harvest_ip_mask & AMD_HARVEST_IP_DMU_MASK)) + return false; + + return amdgpu_device_asic_has_dc_support(adev->pdev, adev->asic_type); +} + +static void amdgpu_device_xgmi_reset_func(struct work_struct *__work) +{ + struct amdgpu_device *adev = + container_of(__work, struct amdgpu_device, xgmi_reset_work); + struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev); + + /* It's a bug to not have a hive within this function */ + if (WARN_ON(!hive)) + return; + + /* + * Use task barrier to synchronize all xgmi reset works across the + * hive. task_barrier_enter and task_barrier_exit will block + * until all the threads running the xgmi reset works reach + * those points. task_barrier_full will do both blocks. + */ + if (amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_BACO) { + + task_barrier_enter(&hive->tb); + adev->asic_reset_res = amdgpu_device_baco_enter(adev); + + if (adev->asic_reset_res) + goto fail; + + task_barrier_exit(&hive->tb); + adev->asic_reset_res = amdgpu_device_baco_exit(adev); + + if (adev->asic_reset_res) + goto fail; + + amdgpu_ras_reset_error_count(adev, AMDGPU_RAS_BLOCK__MMHUB); + } else { + + task_barrier_full(&hive->tb); + adev->asic_reset_res = amdgpu_asic_reset(adev); + } + +fail: + if (adev->asic_reset_res) + dev_warn(adev->dev, + "ASIC reset failed with error, %d for drm dev, %s", + adev->asic_reset_res, adev_to_drm(adev)->unique); + amdgpu_put_xgmi_hive(hive); +} + +static int amdgpu_device_get_job_timeout_settings(struct amdgpu_device *adev) +{ + char *input = amdgpu_lockup_timeout; + char *timeout_setting = NULL; + int index = 0; + long timeout; + int ret = 0; + + /* By default timeout for all queues is 2 sec */ + adev->gfx_timeout = adev->compute_timeout = adev->sdma_timeout = + adev->video_timeout = msecs_to_jiffies(2000); + + if (!strnlen(input, AMDGPU_MAX_TIMEOUT_PARAM_LENGTH)) + return 0; + + while ((timeout_setting = strsep(&input, ",")) && + strnlen(timeout_setting, AMDGPU_MAX_TIMEOUT_PARAM_LENGTH)) { + ret = kstrtol(timeout_setting, 0, &timeout); + if (ret) + return ret; + + if (timeout == 0) { + index++; + continue; + } else if (timeout < 0) { + timeout = MAX_SCHEDULE_TIMEOUT; + dev_warn(adev->dev, "lockup timeout disabled"); + add_taint(TAINT_SOFTLOCKUP, LOCKDEP_STILL_OK); + } else { + timeout = msecs_to_jiffies(timeout); + } + + switch (index++) { + case 0: + adev->gfx_timeout = timeout; + break; + case 1: + adev->compute_timeout = timeout; + break; + case 2: + adev->sdma_timeout = timeout; + break; + case 3: + adev->video_timeout = timeout; + break; + default: + break; + } + } + + /* When only one value specified apply it to all queues. */ + if (index == 1) + adev->gfx_timeout = adev->compute_timeout = adev->sdma_timeout = + adev->video_timeout = timeout; + + return ret; +} + +/** + * amdgpu_device_check_iommu_direct_map - check if RAM direct mapped to GPU + * + * @adev: amdgpu_device pointer + * + * RAM direct mapped to GPU if IOMMU is not enabled or is pass through mode + */ +static void amdgpu_device_check_iommu_direct_map(struct amdgpu_device *adev) +{ + struct iommu_domain *domain; + + domain = iommu_get_domain_for_dev(adev->dev); + if (!domain || domain->type == IOMMU_DOMAIN_IDENTITY) + adev->ram_is_direct_mapped = true; +} + +#if defined(CONFIG_HSA_AMD_P2P) +/** + * amdgpu_device_check_iommu_remap - Check if DMA remapping is enabled. + * + * @adev: amdgpu_device pointer + * + * return if IOMMU remapping bar address + */ +static bool amdgpu_device_check_iommu_remap(struct amdgpu_device *adev) +{ + struct iommu_domain *domain; + + domain = iommu_get_domain_for_dev(adev->dev); + if (domain && (domain->type == IOMMU_DOMAIN_DMA || + domain->type == IOMMU_DOMAIN_DMA_FQ)) + return true; + + return false; +} +#endif + +static void amdgpu_device_set_mcbp(struct amdgpu_device *adev) +{ + if (amdgpu_mcbp == 1) + adev->gfx.mcbp = true; + else if (amdgpu_mcbp == 0) + adev->gfx.mcbp = false; + + if (amdgpu_sriov_vf(adev)) + adev->gfx.mcbp = true; + + if (adev->gfx.mcbp) + dev_info(adev->dev, "MCBP is enabled\n"); +} + +static int amdgpu_device_sys_interface_init(struct amdgpu_device *adev) +{ + int r; + + r = amdgpu_atombios_sysfs_init(adev); + if (r) + drm_err(&adev->ddev, + "registering atombios sysfs failed (%d).\n", r); + + r = amdgpu_pm_sysfs_init(adev); + if (r) + dev_err(adev->dev, "registering pm sysfs failed (%d).\n", r); + + r = amdgpu_ucode_sysfs_init(adev); + if (r) { + adev->ucode_sysfs_en = false; + dev_err(adev->dev, "Creating firmware sysfs failed (%d).\n", r); + } else + adev->ucode_sysfs_en = true; + + r = amdgpu_device_attr_sysfs_init(adev); + if (r) + dev_err(adev->dev, "Could not create amdgpu device attr\n"); + + r = devm_device_add_group(adev->dev, &amdgpu_board_attrs_group); + if (r) + dev_err(adev->dev, + "Could not create amdgpu board attributes\n"); + + amdgpu_fru_sysfs_init(adev); + amdgpu_reg_state_sysfs_init(adev); + amdgpu_xcp_sysfs_init(adev); + + return r; +} + +static void amdgpu_device_sys_interface_fini(struct amdgpu_device *adev) +{ + if (adev->pm.sysfs_initialized) + amdgpu_pm_sysfs_fini(adev); + if (adev->ucode_sysfs_en) + amdgpu_ucode_sysfs_fini(adev); + amdgpu_device_attr_sysfs_fini(adev); + amdgpu_fru_sysfs_fini(adev); + + amdgpu_reg_state_sysfs_fini(adev); + amdgpu_xcp_sysfs_fini(adev); +} + +/** + * amdgpu_device_init - initialize the driver + * + * @adev: amdgpu_device pointer + * @flags: driver flags + * + * Initializes the driver info and hw (all asics). + * Returns 0 for success or an error on failure. + * Called at driver startup. + */ +int amdgpu_device_init(struct amdgpu_device *adev, + uint32_t flags) +{ + struct pci_dev *pdev = adev->pdev; + int r, i; + bool px = false; + u32 max_MBps; + int tmp; + + adev->shutdown = false; + adev->flags = flags; + + if (amdgpu_force_asic_type >= 0 && amdgpu_force_asic_type < CHIP_LAST) + adev->asic_type = amdgpu_force_asic_type; + else + adev->asic_type = flags & AMD_ASIC_MASK; + + adev->usec_timeout = AMDGPU_MAX_USEC_TIMEOUT; + if (amdgpu_emu_mode == 1) + adev->usec_timeout *= 10; + adev->gmc.gart_size = 512 * 1024 * 1024; + adev->accel_working = false; + adev->num_rings = 0; + RCU_INIT_POINTER(adev->gang_submit, dma_fence_get_stub()); + adev->mman.buffer_funcs = NULL; + adev->mman.buffer_funcs_ring = NULL; + adev->vm_manager.vm_pte_funcs = NULL; + adev->vm_manager.vm_pte_num_scheds = 0; + adev->gmc.gmc_funcs = NULL; + adev->harvest_ip_mask = 0x0; + adev->fence_context = dma_fence_context_alloc(AMDGPU_MAX_RINGS); + bitmap_zero(adev->gfx.pipe_reserve_bitmap, AMDGPU_MAX_COMPUTE_QUEUES); + + adev->smc_rreg = &amdgpu_invalid_rreg; + adev->smc_wreg = &amdgpu_invalid_wreg; + adev->pcie_rreg = &amdgpu_invalid_rreg; + adev->pcie_wreg = &amdgpu_invalid_wreg; + adev->pcie_rreg_ext = &amdgpu_invalid_rreg_ext; + adev->pcie_wreg_ext = &amdgpu_invalid_wreg_ext; + adev->pciep_rreg = &amdgpu_invalid_rreg; + adev->pciep_wreg = &amdgpu_invalid_wreg; + adev->pcie_rreg64 = &amdgpu_invalid_rreg64; + adev->pcie_wreg64 = &amdgpu_invalid_wreg64; + adev->pcie_rreg64_ext = &amdgpu_invalid_rreg64_ext; + adev->pcie_wreg64_ext = &amdgpu_invalid_wreg64_ext; + adev->uvd_ctx_rreg = &amdgpu_invalid_rreg; + adev->uvd_ctx_wreg = &amdgpu_invalid_wreg; + adev->didt_rreg = &amdgpu_invalid_rreg; + adev->didt_wreg = &amdgpu_invalid_wreg; + adev->gc_cac_rreg = &amdgpu_invalid_rreg; + adev->gc_cac_wreg = &amdgpu_invalid_wreg; + adev->audio_endpt_rreg = &amdgpu_block_invalid_rreg; + adev->audio_endpt_wreg = &amdgpu_block_invalid_wreg; + + dev_info( + adev->dev, + "initializing kernel modesetting (%s 0x%04X:0x%04X 0x%04X:0x%04X 0x%02X).\n", + amdgpu_asic_name[adev->asic_type], pdev->vendor, pdev->device, + pdev->subsystem_vendor, pdev->subsystem_device, pdev->revision); + + /* mutex initialization are all done here so we + * can recall function without having locking issues + */ + mutex_init(&adev->firmware.mutex); + mutex_init(&adev->pm.mutex); + mutex_init(&adev->gfx.gpu_clock_mutex); + mutex_init(&adev->srbm_mutex); + mutex_init(&adev->gfx.pipe_reserve_mutex); + mutex_init(&adev->gfx.gfx_off_mutex); + mutex_init(&adev->gfx.partition_mutex); + mutex_init(&adev->grbm_idx_mutex); + mutex_init(&adev->mn_lock); + mutex_init(&adev->virt.vf_errors.lock); + hash_init(adev->mn_hash); + mutex_init(&adev->psp.mutex); + mutex_init(&adev->notifier_lock); + mutex_init(&adev->pm.stable_pstate_ctx_lock); + mutex_init(&adev->benchmark_mutex); + mutex_init(&adev->gfx.reset_sem_mutex); + /* Initialize the mutex for cleaner shader isolation between GFX and compute processes */ + mutex_init(&adev->enforce_isolation_mutex); + for (i = 0; i < MAX_XCP; ++i) { + adev->isolation[i].spearhead = dma_fence_get_stub(); + amdgpu_sync_create(&adev->isolation[i].active); + amdgpu_sync_create(&adev->isolation[i].prev); + } + mutex_init(&adev->gfx.userq_sch_mutex); + mutex_init(&adev->gfx.workload_profile_mutex); + mutex_init(&adev->vcn.workload_profile_mutex); + + amdgpu_device_init_apu_flags(adev); + + r = amdgpu_device_check_arguments(adev); + if (r) + return r; + + spin_lock_init(&adev->mmio_idx_lock); + spin_lock_init(&adev->smc_idx_lock); + spin_lock_init(&adev->pcie_idx_lock); + spin_lock_init(&adev->uvd_ctx_idx_lock); + spin_lock_init(&adev->didt_idx_lock); + spin_lock_init(&adev->gc_cac_idx_lock); + spin_lock_init(&adev->se_cac_idx_lock); + spin_lock_init(&adev->audio_endpt_idx_lock); + spin_lock_init(&adev->mm_stats.lock); + spin_lock_init(&adev->virt.rlcg_reg_lock); + spin_lock_init(&adev->wb.lock); + + xa_init_flags(&adev->userq_xa, XA_FLAGS_LOCK_IRQ); + + INIT_LIST_HEAD(&adev->reset_list); + + INIT_LIST_HEAD(&adev->ras_list); + + INIT_LIST_HEAD(&adev->pm.od_kobj_list); + + xa_init(&adev->userq_doorbell_xa); + + INIT_DELAYED_WORK(&adev->delayed_init_work, + amdgpu_device_delayed_init_work_handler); + INIT_DELAYED_WORK(&adev->gfx.gfx_off_delay_work, + amdgpu_device_delay_enable_gfx_off); + /* + * Initialize the enforce_isolation work structures for each XCP + * partition. This work handler is responsible for enforcing shader + * isolation on AMD GPUs. It counts the number of emitted fences for + * each GFX and compute ring. If there are any fences, it schedules + * the `enforce_isolation_work` to be run after a delay. If there are + * no fences, it signals the Kernel Fusion Driver (KFD) to resume the + * runqueue. + */ + for (i = 0; i < MAX_XCP; i++) { + INIT_DELAYED_WORK(&adev->gfx.enforce_isolation[i].work, + amdgpu_gfx_enforce_isolation_handler); + adev->gfx.enforce_isolation[i].adev = adev; + adev->gfx.enforce_isolation[i].xcp_id = i; + } + + INIT_WORK(&adev->xgmi_reset_work, amdgpu_device_xgmi_reset_func); + INIT_WORK(&adev->userq_reset_work, amdgpu_userq_reset_work); + + adev->gfx.gfx_off_req_count = 1; + adev->gfx.gfx_off_residency = 0; + adev->gfx.gfx_off_entrycount = 0; + adev->pm.ac_power = power_supply_is_system_supplied() > 0; + + atomic_set(&adev->throttling_logging_enabled, 1); + /* + * If throttling continues, logging will be performed every minute + * to avoid log flooding. "-1" is subtracted since the thermal + * throttling interrupt comes every second. Thus, the total logging + * interval is 59 seconds(retelimited printk interval) + 1(waiting + * for throttling interrupt) = 60 seconds. + */ + ratelimit_state_init(&adev->throttling_logging_rs, (60 - 1) * HZ, 1); + + ratelimit_set_flags(&adev->throttling_logging_rs, RATELIMIT_MSG_ON_RELEASE); + + /* Registers mapping */ + /* TODO: block userspace mapping of io register */ + if (adev->asic_type >= CHIP_BONAIRE) { + adev->rmmio_base = pci_resource_start(adev->pdev, 5); + adev->rmmio_size = pci_resource_len(adev->pdev, 5); + } else { + adev->rmmio_base = pci_resource_start(adev->pdev, 2); + adev->rmmio_size = pci_resource_len(adev->pdev, 2); + } + + for (i = 0; i < AMD_IP_BLOCK_TYPE_NUM; i++) + atomic_set(&adev->pm.pwr_state[i], POWER_STATE_UNKNOWN); + + adev->rmmio = ioremap(adev->rmmio_base, adev->rmmio_size); + if (!adev->rmmio) + return -ENOMEM; + + dev_info(adev->dev, "register mmio base: 0x%08X\n", + (uint32_t)adev->rmmio_base); + dev_info(adev->dev, "register mmio size: %u\n", + (unsigned int)adev->rmmio_size); + + /* + * Reset domain needs to be present early, before XGMI hive discovered + * (if any) and initialized to use reset sem and in_gpu reset flag + * early on during init and before calling to RREG32. + */ + adev->reset_domain = amdgpu_reset_create_reset_domain(SINGLE_DEVICE, "amdgpu-reset-dev"); + if (!adev->reset_domain) + return -ENOMEM; + + /* detect hw virtualization here */ + amdgpu_virt_init(adev); + + amdgpu_device_get_pcie_info(adev); + + r = amdgpu_device_get_job_timeout_settings(adev); + if (r) { + dev_err(adev->dev, "invalid lockup_timeout parameter syntax\n"); + return r; + } + + amdgpu_device_set_mcbp(adev); + + /* + * By default, use default mode where all blocks are expected to be + * initialized. At present a 'swinit' of blocks is required to be + * completed before the need for a different level is detected. + */ + amdgpu_set_init_level(adev, AMDGPU_INIT_LEVEL_DEFAULT); + /* early init functions */ + r = amdgpu_device_ip_early_init(adev); + if (r) + return r; + + /* + * No need to remove conflicting FBs for non-display class devices. + * This prevents the sysfb from being freed accidently. + */ + if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA || + (pdev->class >> 8) == PCI_CLASS_DISPLAY_OTHER) { + /* Get rid of things like offb */ + r = aperture_remove_conflicting_pci_devices(adev->pdev, amdgpu_kms_driver.name); + if (r) + return r; + } + + /* Enable TMZ based on IP_VERSION */ + amdgpu_gmc_tmz_set(adev); + + if (amdgpu_sriov_vf(adev) && + amdgpu_ip_version(adev, GC_HWIP, 0) >= IP_VERSION(10, 3, 0)) + /* VF MMIO access (except mailbox range) from CPU + * will be blocked during sriov runtime + */ + adev->virt.caps |= AMDGPU_VF_MMIO_ACCESS_PROTECT; + + amdgpu_gmc_noretry_set(adev); + /* Need to get xgmi info early to decide the reset behavior*/ + if (adev->gmc.xgmi.supported) { + r = adev->gfxhub.funcs->get_xgmi_info(adev); + if (r) + return r; + } + + /* enable PCIE atomic ops */ + if (amdgpu_sriov_vf(adev)) { + if (adev->virt.fw_reserve.p_pf2vf) + adev->have_atomics_support = ((struct amd_sriov_msg_pf2vf_info *) + adev->virt.fw_reserve.p_pf2vf)->pcie_atomic_ops_support_flags == + (PCI_EXP_DEVCAP2_ATOMIC_COMP32 | PCI_EXP_DEVCAP2_ATOMIC_COMP64); + /* APUs w/ gfx9 onwards doesn't reply on PCIe atomics, rather it is a + * internal path natively support atomics, set have_atomics_support to true. + */ + } else if ((adev->flags & AMD_IS_APU) && + (amdgpu_ip_version(adev, GC_HWIP, 0) > + IP_VERSION(9, 0, 0))) { + adev->have_atomics_support = true; + } else { + adev->have_atomics_support = + !pci_enable_atomic_ops_to_root(adev->pdev, + PCI_EXP_DEVCAP2_ATOMIC_COMP32 | + PCI_EXP_DEVCAP2_ATOMIC_COMP64); + } + + if (!adev->have_atomics_support) + dev_info(adev->dev, "PCIE atomic ops is not supported\n"); + + /* doorbell bar mapping and doorbell index init*/ + amdgpu_doorbell_init(adev); + + if (amdgpu_emu_mode == 1) { + /* post the asic on emulation mode */ + emu_soc_asic_init(adev); + goto fence_driver_init; + } + + amdgpu_reset_init(adev); + + /* detect if we are with an SRIOV vbios */ + if (adev->bios) + amdgpu_device_detect_sriov_bios(adev); + + /* check if we need to reset the asic + * E.g., driver was not cleanly unloaded previously, etc. + */ + if (!amdgpu_sriov_vf(adev) && amdgpu_asic_need_reset_on_init(adev)) { + if (adev->gmc.xgmi.num_physical_nodes) { + dev_info(adev->dev, "Pending hive reset.\n"); + amdgpu_set_init_level(adev, + AMDGPU_INIT_LEVEL_MINIMAL_XGMI); + } else if (amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(13, 0, 10) && + !amdgpu_device_has_display_hardware(adev)) { + r = psp_gpu_reset(adev); + } else { + tmp = amdgpu_reset_method; + /* It should do a default reset when loading or reloading the driver, + * regardless of the module parameter reset_method. + */ + amdgpu_reset_method = AMD_RESET_METHOD_NONE; + r = amdgpu_asic_reset(adev); + amdgpu_reset_method = tmp; + } + + if (r) { + dev_err(adev->dev, "asic reset on init failed\n"); + goto failed; + } + } + + /* Post card if necessary */ + if (amdgpu_device_need_post(adev)) { + if (!adev->bios) { + dev_err(adev->dev, "no vBIOS found\n"); + r = -EINVAL; + goto failed; + } + dev_info(adev->dev, "GPU posting now...\n"); + r = amdgpu_device_asic_init(adev); + if (r) { + dev_err(adev->dev, "gpu post error!\n"); + goto failed; + } + } + + if (adev->bios) { + if (adev->is_atom_fw) { + /* Initialize clocks */ + r = amdgpu_atomfirmware_get_clock_info(adev); + if (r) { + dev_err(adev->dev, "amdgpu_atomfirmware_get_clock_info failed\n"); + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0); + goto failed; + } + } else { + /* Initialize clocks */ + r = amdgpu_atombios_get_clock_info(adev); + if (r) { + dev_err(adev->dev, "amdgpu_atombios_get_clock_info failed\n"); + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_ATOMBIOS_GET_CLOCK_FAIL, 0, 0); + goto failed; + } + /* init i2c buses */ + amdgpu_i2c_init(adev); + } + } + +fence_driver_init: + /* Fence driver */ + r = amdgpu_fence_driver_sw_init(adev); + if (r) { + dev_err(adev->dev, "amdgpu_fence_driver_sw_init failed\n"); + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_FENCE_INIT_FAIL, 0, 0); + goto failed; + } + + /* init the mode config */ + drm_mode_config_init(adev_to_drm(adev)); + + r = amdgpu_device_ip_init(adev); + if (r) { + dev_err(adev->dev, "amdgpu_device_ip_init failed\n"); + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_INIT_FAIL, 0, 0); + goto release_ras_con; + } + + amdgpu_fence_driver_hw_init(adev); + + dev_info(adev->dev, + "SE %d, SH per SE %d, CU per SH %d, active_cu_number %d\n", + adev->gfx.config.max_shader_engines, + adev->gfx.config.max_sh_per_se, + adev->gfx.config.max_cu_per_sh, + adev->gfx.cu_info.number); + + adev->accel_working = true; + + amdgpu_vm_check_compute_bug(adev); + + /* Initialize the buffer migration limit. */ + if (amdgpu_moverate >= 0) + max_MBps = amdgpu_moverate; + else + max_MBps = 8; /* Allow 8 MB/s. */ + /* Get a log2 for easy divisions. */ + adev->mm_stats.log2_max_MBps = ilog2(max(1u, max_MBps)); + + /* + * Register gpu instance before amdgpu_device_enable_mgpu_fan_boost. + * Otherwise the mgpu fan boost feature will be skipped due to the + * gpu instance is counted less. + */ + amdgpu_register_gpu_instance(adev); + + /* enable clockgating, etc. after ib tests, etc. since some blocks require + * explicit gating rather than handling it automatically. + */ + if (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI) { + r = amdgpu_device_ip_late_init(adev); + if (r) { + dev_err(adev->dev, "amdgpu_device_ip_late_init failed\n"); + amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_AMDGPU_LATE_INIT_FAIL, 0, r); + goto release_ras_con; + } + /* must succeed. */ + amdgpu_ras_resume(adev); + queue_delayed_work(system_wq, &adev->delayed_init_work, + msecs_to_jiffies(AMDGPU_RESUME_MS)); + } + + if (amdgpu_sriov_vf(adev)) { + amdgpu_virt_release_full_gpu(adev, true); + flush_delayed_work(&adev->delayed_init_work); + } + + if (adev->init_lvl->level == AMDGPU_INIT_LEVEL_MINIMAL_XGMI) + amdgpu_xgmi_reset_on_init(adev); + /* + * Place those sysfs registering after `late_init`. As some of those + * operations performed in `late_init` might affect the sysfs + * interfaces creating. + */ + r = amdgpu_device_sys_interface_init(adev); + + if (IS_ENABLED(CONFIG_PERF_EVENTS)) + r = amdgpu_pmu_init(adev); + if (r) + dev_err(adev->dev, "amdgpu_pmu_init failed\n"); + + /* Have stored pci confspace at hand for restore in sudden PCI error */ + if (amdgpu_device_cache_pci_state(adev->pdev)) + pci_restore_state(pdev); + + /* if we have > 1 VGA cards, then disable the amdgpu VGA resources */ + /* this will fail for cards that aren't VGA class devices, just + * ignore it + */ + if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA) + vga_client_register(adev->pdev, amdgpu_device_vga_set_decode); + + px = amdgpu_device_supports_px(adev); + + if (px || (!dev_is_removable(&adev->pdev->dev) && + apple_gmux_detect(NULL, NULL))) + vga_switcheroo_register_client(adev->pdev, + &amdgpu_switcheroo_ops, px); + + if (px) + vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain); + + amdgpu_device_check_iommu_direct_map(adev); + + adev->pm_nb.notifier_call = amdgpu_device_pm_notifier; + r = register_pm_notifier(&adev->pm_nb); + if (r) + goto failed; + + return 0; + +release_ras_con: + if (amdgpu_sriov_vf(adev)) + amdgpu_virt_release_full_gpu(adev, true); + + /* failed in exclusive mode due to timeout */ + if (amdgpu_sriov_vf(adev) && + !amdgpu_sriov_runtime(adev) && + amdgpu_virt_mmio_blocked(adev) && + !amdgpu_virt_wait_reset(adev)) { + dev_err(adev->dev, "VF exclusive mode timeout\n"); + /* Don't send request since VF is inactive. */ + adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME; + adev->virt.ops = NULL; + r = -EAGAIN; + } + amdgpu_release_ras_context(adev); + +failed: + amdgpu_vf_error_trans_all(adev); + + return r; +} + +static void amdgpu_device_unmap_mmio(struct amdgpu_device *adev) +{ + + /* Clear all CPU mappings pointing to this device */ + unmap_mapping_range(adev->ddev.anon_inode->i_mapping, 0, 0, 1); + + /* Unmap all mapped bars - Doorbell, registers and VRAM */ + amdgpu_doorbell_fini(adev); + + iounmap(adev->rmmio); + adev->rmmio = NULL; + if (adev->mman.aper_base_kaddr) + iounmap(adev->mman.aper_base_kaddr); + adev->mman.aper_base_kaddr = NULL; + + /* Memory manager related */ + if (!adev->gmc.xgmi.connected_to_cpu && !adev->gmc.is_app_apu) { + arch_phys_wc_del(adev->gmc.vram_mtrr); + arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size); + } +} + +/** + * amdgpu_device_fini_hw - tear down the driver + * + * @adev: amdgpu_device pointer + * + * Tear down the driver info (all asics). + * Called at driver shutdown. + */ +void amdgpu_device_fini_hw(struct amdgpu_device *adev) +{ + dev_info(adev->dev, "amdgpu: finishing device.\n"); + flush_delayed_work(&adev->delayed_init_work); + + if (adev->mman.initialized) + drain_workqueue(adev->mman.bdev.wq); + adev->shutdown = true; + + unregister_pm_notifier(&adev->pm_nb); + + /* make sure IB test finished before entering exclusive mode + * to avoid preemption on IB test + */ + if (amdgpu_sriov_vf(adev)) { + amdgpu_virt_request_full_gpu(adev, false); + amdgpu_virt_fini_data_exchange(adev); + } + + /* disable all interrupts */ + amdgpu_irq_disable_all(adev); + if (adev->mode_info.mode_config_initialized) { + if (!drm_drv_uses_atomic_modeset(adev_to_drm(adev))) + drm_helper_force_disable_all(adev_to_drm(adev)); + else + drm_atomic_helper_shutdown(adev_to_drm(adev)); + } + amdgpu_fence_driver_hw_fini(adev); + + amdgpu_device_sys_interface_fini(adev); + + /* disable ras feature must before hw fini */ + amdgpu_ras_pre_fini(adev); + + amdgpu_ttm_set_buffer_funcs_status(adev, false); + + amdgpu_device_ip_fini_early(adev); + + amdgpu_irq_fini_hw(adev); + + if (adev->mman.initialized) + ttm_device_clear_dma_mappings(&adev->mman.bdev); + + amdgpu_gart_dummy_page_fini(adev); + + if (drm_dev_is_unplugged(adev_to_drm(adev))) + amdgpu_device_unmap_mmio(adev); + +} + +void amdgpu_device_fini_sw(struct amdgpu_device *adev) +{ + int i, idx; + bool px; + + amdgpu_device_ip_fini(adev); + amdgpu_fence_driver_sw_fini(adev); + amdgpu_ucode_release(&adev->firmware.gpu_info_fw); + adev->accel_working = false; + dma_fence_put(rcu_dereference_protected(adev->gang_submit, true)); + for (i = 0; i < MAX_XCP; ++i) { + dma_fence_put(adev->isolation[i].spearhead); + amdgpu_sync_free(&adev->isolation[i].active); + amdgpu_sync_free(&adev->isolation[i].prev); + } + + amdgpu_reset_fini(adev); + + /* free i2c buses */ + amdgpu_i2c_fini(adev); + + if (adev->bios) { + if (amdgpu_emu_mode != 1) + amdgpu_atombios_fini(adev); + amdgpu_bios_release(adev); + } + + kfree(adev->fru_info); + adev->fru_info = NULL; + + kfree(adev->xcp_mgr); + adev->xcp_mgr = NULL; + + px = amdgpu_device_supports_px(adev); + + if (px || (!dev_is_removable(&adev->pdev->dev) && + apple_gmux_detect(NULL, NULL))) + vga_switcheroo_unregister_client(adev->pdev); + + if (px) + vga_switcheroo_fini_domain_pm_ops(adev->dev); + + if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA) + vga_client_unregister(adev->pdev); + + if (drm_dev_enter(adev_to_drm(adev), &idx)) { + + iounmap(adev->rmmio); + adev->rmmio = NULL; + drm_dev_exit(idx); + } + + if (IS_ENABLED(CONFIG_PERF_EVENTS)) + amdgpu_pmu_fini(adev); + if (adev->discovery.bin) + amdgpu_discovery_fini(adev); + + amdgpu_reset_put_reset_domain(adev->reset_domain); + adev->reset_domain = NULL; + + kfree(adev->pci_state); + kfree(adev->pcie_reset_ctx.swds_pcistate); + kfree(adev->pcie_reset_ctx.swus_pcistate); +} + +/** + * amdgpu_device_evict_resources - evict device resources + * @adev: amdgpu device object + * + * Evicts all ttm device resources(vram BOs, gart table) from the lru list + * of the vram memory type. Mainly used for evicting device resources + * at suspend time. + * + */ +static int amdgpu_device_evict_resources(struct amdgpu_device *adev) +{ + int ret; + + /* No need to evict vram on APUs unless going to S4 */ + if (!adev->in_s4 && (adev->flags & AMD_IS_APU)) + return 0; + + /* No need to evict when going to S5 through S4 callbacks */ + if (system_state == SYSTEM_POWER_OFF) + return 0; + + ret = amdgpu_ttm_evict_resources(adev, TTM_PL_VRAM); + if (ret) { + dev_warn(adev->dev, "evicting device resources failed\n"); + return ret; + } + + if (adev->in_s4) { + ret = ttm_device_prepare_hibernation(&adev->mman.bdev); + if (ret) + dev_err(adev->dev, "prepare hibernation failed, %d\n", ret); + } + return ret; +} + +/* + * Suspend & resume. + */ +/** + * amdgpu_device_pm_notifier - Notification block for Suspend/Hibernate events + * @nb: notifier block + * @mode: suspend mode + * @data: data + * + * This function is called when the system is about to suspend or hibernate. + * It is used to set the appropriate flags so that eviction can be optimized + * in the pm prepare callback. + */ +static int amdgpu_device_pm_notifier(struct notifier_block *nb, unsigned long mode, + void *data) +{ + struct amdgpu_device *adev = container_of(nb, struct amdgpu_device, pm_nb); + + switch (mode) { + case PM_HIBERNATION_PREPARE: + adev->in_s4 = true; + break; + case PM_POST_HIBERNATION: + adev->in_s4 = false; + break; + } + + return NOTIFY_DONE; +} + +/** + * amdgpu_device_prepare - prepare for device suspend + * + * @dev: drm dev pointer + * + * Prepare to put the hw in the suspend state (all asics). + * Returns 0 for success or an error on failure. + * Called at driver suspend. + */ +int amdgpu_device_prepare(struct drm_device *dev) +{ + struct amdgpu_device *adev = drm_to_adev(dev); + int i, r; + + if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) + return 0; + + /* Evict the majority of BOs before starting suspend sequence */ + r = amdgpu_device_evict_resources(adev); + if (r) + return r; + + flush_delayed_work(&adev->gfx.gfx_off_delay_work); + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (!adev->ip_blocks[i].version->funcs->prepare_suspend) + continue; + r = adev->ip_blocks[i].version->funcs->prepare_suspend(&adev->ip_blocks[i]); + if (r) + return r; + } + + return 0; +} + +/** + * amdgpu_device_complete - complete power state transition + * + * @dev: drm dev pointer + * + * Undo the changes from amdgpu_device_prepare. This will be + * called on all resume transitions, including those that failed. + */ +void amdgpu_device_complete(struct drm_device *dev) +{ + struct amdgpu_device *adev = drm_to_adev(dev); + int i; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (!adev->ip_blocks[i].version->funcs->complete) + continue; + adev->ip_blocks[i].version->funcs->complete(&adev->ip_blocks[i]); + } +} + +/** + * amdgpu_device_suspend - initiate device suspend + * + * @dev: drm dev pointer + * @notify_clients: notify in-kernel DRM clients + * + * Puts the hw in the suspend state (all asics). + * Returns 0 for success or an error on failure. + * Called at driver suspend. + */ +int amdgpu_device_suspend(struct drm_device *dev, bool notify_clients) +{ + struct amdgpu_device *adev = drm_to_adev(dev); + int r, rec; + + if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) + return 0; + + adev->in_suspend = true; + + if (amdgpu_sriov_vf(adev)) { + if (!adev->in_runpm) + amdgpu_amdkfd_suspend_process(adev); + amdgpu_virt_fini_data_exchange(adev); + r = amdgpu_virt_request_full_gpu(adev, false); + if (r) + return r; + } + + r = amdgpu_acpi_smart_shift_update(adev, AMDGPU_SS_DEV_D3); + if (r) + goto unwind_sriov; + + if (notify_clients) + drm_client_dev_suspend(adev_to_drm(adev)); + + cancel_delayed_work_sync(&adev->delayed_init_work); + + amdgpu_ras_suspend(adev); + + r = amdgpu_device_ip_suspend_phase1(adev); + if (r) + goto unwind_smartshift; + + amdgpu_amdkfd_suspend(adev, !amdgpu_sriov_vf(adev) && !adev->in_runpm); + r = amdgpu_userq_suspend(adev); + if (r) + goto unwind_ip_phase1; + + r = amdgpu_device_evict_resources(adev); + if (r) + goto unwind_userq; + + amdgpu_ttm_set_buffer_funcs_status(adev, false); + + amdgpu_fence_driver_hw_fini(adev); + + r = amdgpu_device_ip_suspend_phase2(adev); + if (r) + goto unwind_evict; + + if (amdgpu_sriov_vf(adev)) + amdgpu_virt_release_full_gpu(adev, false); + + return 0; + +unwind_evict: + if (adev->mman.buffer_funcs_ring->sched.ready) + amdgpu_ttm_set_buffer_funcs_status(adev, true); + amdgpu_fence_driver_hw_init(adev); + +unwind_userq: + rec = amdgpu_userq_resume(adev); + if (rec) { + dev_warn(adev->dev, "failed to re-initialize user queues: %d\n", rec); + return r; + } + rec = amdgpu_amdkfd_resume(adev, !amdgpu_sriov_vf(adev) && !adev->in_runpm); + if (rec) { + dev_warn(adev->dev, "failed to re-initialize kfd: %d\n", rec); + return r; + } + +unwind_ip_phase1: + /* suspend phase 1 = resume phase 3 */ + rec = amdgpu_device_ip_resume_phase3(adev); + if (rec) { + dev_warn(adev->dev, "failed to re-initialize IPs phase1: %d\n", rec); + return r; + } + +unwind_smartshift: + rec = amdgpu_acpi_smart_shift_update(adev, AMDGPU_SS_DEV_D0); + if (rec) { + dev_warn(adev->dev, "failed to re-update smart shift: %d\n", rec); + return r; + } + + if (notify_clients) + drm_client_dev_resume(adev_to_drm(adev)); + + amdgpu_ras_resume(adev); + +unwind_sriov: + if (amdgpu_sriov_vf(adev)) { + rec = amdgpu_virt_request_full_gpu(adev, true); + if (rec) { + dev_warn(adev->dev, "failed to reinitialize sriov: %d\n", rec); + return r; + } + } + + adev->in_suspend = adev->in_s0ix = adev->in_s3 = false; + + return r; +} + +static inline int amdgpu_virt_resume(struct amdgpu_device *adev) +{ + int r; + unsigned int prev_physical_node_id = adev->gmc.xgmi.physical_node_id; + + /* During VM resume, QEMU programming of VF MSIX table (register GFXMSIX_VECT0_ADDR_LO) + * may not work. The access could be blocked by nBIF protection as VF isn't in + * exclusive access mode. Exclusive access is enabled now, disable/enable MSIX + * so that QEMU reprograms MSIX table. + */ + amdgpu_restore_msix(adev); + + r = adev->gfxhub.funcs->get_xgmi_info(adev); + if (r) + return r; + + dev_info(adev->dev, "xgmi node, old id %d, new id %d\n", + prev_physical_node_id, adev->gmc.xgmi.physical_node_id); + + adev->vm_manager.vram_base_offset = adev->gfxhub.funcs->get_mc_fb_offset(adev); + adev->vm_manager.vram_base_offset += + adev->gmc.xgmi.physical_node_id * adev->gmc.xgmi.node_segment_size; + + return 0; +} + +/** + * amdgpu_device_resume - initiate device resume + * + * @dev: drm dev pointer + * @notify_clients: notify in-kernel DRM clients + * + * Bring the hw back to operating state (all asics). + * Returns 0 for success or an error on failure. + * Called at driver resume. + */ +int amdgpu_device_resume(struct drm_device *dev, bool notify_clients) +{ + struct amdgpu_device *adev = drm_to_adev(dev); + int r = 0; + + if (amdgpu_sriov_vf(adev)) { + r = amdgpu_virt_request_full_gpu(adev, true); + if (r) + return r; + } + + if (amdgpu_virt_xgmi_migrate_enabled(adev)) { + r = amdgpu_virt_resume(adev); + if (r) + goto exit; + } + + if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) + return 0; + + if (adev->in_s0ix) + amdgpu_dpm_gfx_state_change(adev, sGpuChangeState_D0Entry); + + /* post card */ + if (amdgpu_device_need_post(adev)) { + r = amdgpu_device_asic_init(adev); + if (r) + dev_err(adev->dev, "amdgpu asic init failed\n"); + } + + r = amdgpu_device_ip_resume(adev); + + if (r) { + dev_err(adev->dev, "amdgpu_device_ip_resume failed (%d).\n", r); + goto exit; + } + + r = amdgpu_amdkfd_resume(adev, !amdgpu_sriov_vf(adev) && !adev->in_runpm); + if (r) + goto exit; + + r = amdgpu_userq_resume(adev); + if (r) + goto exit; + + r = amdgpu_device_ip_late_init(adev); + if (r) + goto exit; + + queue_delayed_work(system_wq, &adev->delayed_init_work, + msecs_to_jiffies(AMDGPU_RESUME_MS)); +exit: + if (amdgpu_sriov_vf(adev)) { + amdgpu_virt_init_data_exchange(adev); + amdgpu_virt_release_full_gpu(adev, true); + + if (!r && !adev->in_runpm) + r = amdgpu_amdkfd_resume_process(adev); + } + + if (r) + return r; + + /* Make sure IB tests flushed */ + flush_delayed_work(&adev->delayed_init_work); + + if (notify_clients) + drm_client_dev_resume(adev_to_drm(adev)); + + amdgpu_ras_resume(adev); + + if (adev->mode_info.num_crtc) { + /* + * Most of the connector probing functions try to acquire runtime pm + * refs to ensure that the GPU is powered on when connector polling is + * performed. Since we're calling this from a runtime PM callback, + * trying to acquire rpm refs will cause us to deadlock. + * + * Since we're guaranteed to be holding the rpm lock, it's safe to + * temporarily disable the rpm helpers so this doesn't deadlock us. + */ +#ifdef CONFIG_PM + dev->dev->power.disable_depth++; +#endif + if (!adev->dc_enabled) + drm_helper_hpd_irq_event(dev); + else + drm_kms_helper_hotplug_event(dev); +#ifdef CONFIG_PM + dev->dev->power.disable_depth--; +#endif + } + + amdgpu_vram_mgr_clear_reset_blocks(adev); + adev->in_suspend = false; + + if (amdgpu_acpi_smart_shift_update(adev, AMDGPU_SS_DEV_D0)) + dev_warn(adev->dev, "smart shift update failed\n"); + + return 0; +} + +/** + * amdgpu_device_ip_check_soft_reset - did soft reset succeed + * + * @adev: amdgpu_device pointer + * + * The list of all the hardware IPs that make up the asic is walked and + * the check_soft_reset callbacks are run. check_soft_reset determines + * if the asic is still hung or not. + * Returns true if any of the IPs are still in a hung state, false if not. + */ +static bool amdgpu_device_ip_check_soft_reset(struct amdgpu_device *adev) +{ + int i; + bool asic_hang = false; + + if (amdgpu_sriov_vf(adev)) + return true; + + if (amdgpu_asic_need_full_reset(adev)) + return true; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].version->funcs->check_soft_reset) + adev->ip_blocks[i].status.hang = + adev->ip_blocks[i].version->funcs->check_soft_reset( + &adev->ip_blocks[i]); + if (adev->ip_blocks[i].status.hang) { + dev_info(adev->dev, "IP block:%s is hung!\n", adev->ip_blocks[i].version->funcs->name); + asic_hang = true; + } + } + return asic_hang; +} + +/** + * amdgpu_device_ip_pre_soft_reset - prepare for soft reset + * + * @adev: amdgpu_device pointer + * + * The list of all the hardware IPs that make up the asic is walked and the + * pre_soft_reset callbacks are run if the block is hung. pre_soft_reset + * handles any IP specific hardware or software state changes that are + * necessary for a soft reset to succeed. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_pre_soft_reset(struct amdgpu_device *adev) +{ + int i, r = 0; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].status.hang && + adev->ip_blocks[i].version->funcs->pre_soft_reset) { + r = adev->ip_blocks[i].version->funcs->pre_soft_reset(&adev->ip_blocks[i]); + if (r) + return r; + } + } + + return 0; +} + +/** + * amdgpu_device_ip_need_full_reset - check if a full asic reset is needed + * + * @adev: amdgpu_device pointer + * + * Some hardware IPs cannot be soft reset. If they are hung, a full gpu + * reset is necessary to recover. + * Returns true if a full asic reset is required, false if not. + */ +static bool amdgpu_device_ip_need_full_reset(struct amdgpu_device *adev) +{ + int i; + + if (amdgpu_asic_need_full_reset(adev)) + return true; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if ((adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) || + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_SMC) || + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_ACP) || + (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) || + adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_PSP) { + if (adev->ip_blocks[i].status.hang) { + dev_info(adev->dev, "Some block need full reset!\n"); + return true; + } + } + } + return false; +} + +/** + * amdgpu_device_ip_soft_reset - do a soft reset + * + * @adev: amdgpu_device pointer + * + * The list of all the hardware IPs that make up the asic is walked and the + * soft_reset callbacks are run if the block is hung. soft_reset handles any + * IP specific hardware or software state changes that are necessary to soft + * reset the IP. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_soft_reset(struct amdgpu_device *adev) +{ + int i, r = 0; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].status.hang && + adev->ip_blocks[i].version->funcs->soft_reset) { + r = adev->ip_blocks[i].version->funcs->soft_reset(&adev->ip_blocks[i]); + if (r) + return r; + } + } + + return 0; +} + +/** + * amdgpu_device_ip_post_soft_reset - clean up from soft reset + * + * @adev: amdgpu_device pointer + * + * The list of all the hardware IPs that make up the asic is walked and the + * post_soft_reset callbacks are run if the asic was hung. post_soft_reset + * handles any IP specific hardware or software state changes that are + * necessary after the IP has been soft reset. + * Returns 0 on success, negative error code on failure. + */ +static int amdgpu_device_ip_post_soft_reset(struct amdgpu_device *adev) +{ + int i, r = 0; + + for (i = 0; i < adev->num_ip_blocks; i++) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (adev->ip_blocks[i].status.hang && + adev->ip_blocks[i].version->funcs->post_soft_reset) + r = adev->ip_blocks[i].version->funcs->post_soft_reset(&adev->ip_blocks[i]); + if (r) + return r; + } + + return 0; +} + +/** + * amdgpu_device_reset_sriov - reset ASIC for SR-IOV vf + * + * @adev: amdgpu_device pointer + * @reset_context: amdgpu reset context pointer + * + * do VF FLR and reinitialize Asic + * return 0 means succeeded otherwise failed + */ +static int amdgpu_device_reset_sriov(struct amdgpu_device *adev, + struct amdgpu_reset_context *reset_context) +{ + int r; + struct amdgpu_hive_info *hive = NULL; + + if (test_bit(AMDGPU_HOST_FLR, &reset_context->flags)) { + if (!amdgpu_ras_get_fed_status(adev)) + amdgpu_virt_ready_to_reset(adev); + amdgpu_virt_wait_reset(adev); + clear_bit(AMDGPU_HOST_FLR, &reset_context->flags); + r = amdgpu_virt_request_full_gpu(adev, true); + } else { + r = amdgpu_virt_reset_gpu(adev); + } + if (r) + return r; + + amdgpu_ras_clear_err_state(adev); + amdgpu_irq_gpu_reset_resume_helper(adev); + + /* some sw clean up VF needs to do before recover */ + amdgpu_virt_post_reset(adev); + + /* Resume IP prior to SMC */ + r = amdgpu_device_ip_reinit_early_sriov(adev); + if (r) + return r; + + amdgpu_virt_init_data_exchange(adev); + + r = amdgpu_device_fw_loading(adev); + if (r) + return r; + + /* now we are okay to resume SMC/CP/SDMA */ + r = amdgpu_device_ip_reinit_late_sriov(adev); + if (r) + return r; + + hive = amdgpu_get_xgmi_hive(adev); + /* Update PSP FW topology after reset */ + if (hive && adev->gmc.xgmi.num_physical_nodes > 1) + r = amdgpu_xgmi_update_topology(hive, adev); + if (hive) + amdgpu_put_xgmi_hive(hive); + if (r) + return r; + + r = amdgpu_ib_ring_tests(adev); + if (r) + return r; + + if (adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) + amdgpu_inc_vram_lost(adev); + + /* need to be called during full access so we can't do it later like + * bare-metal does. + */ + amdgpu_amdkfd_post_reset(adev); + amdgpu_virt_release_full_gpu(adev, true); + + /* Aldebaran and gfx_11_0_3 support ras in SRIOV, so need resume ras during reset */ + if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 2) || + amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 3) || + amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 4) || + amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 5, 0) || + amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(11, 0, 3)) + amdgpu_ras_resume(adev); + + amdgpu_virt_ras_telemetry_post_reset(adev); + + return 0; +} + +/** + * amdgpu_device_has_job_running - check if there is any unfinished job + * + * @adev: amdgpu_device pointer + * + * check if there is any job running on the device when guest driver receives + * FLR notification from host driver. If there are still jobs running, then + * the guest driver will not respond the FLR reset. Instead, let the job hit + * the timeout and guest driver then issue the reset request. + */ +bool amdgpu_device_has_job_running(struct amdgpu_device *adev) +{ + int i; + + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { + struct amdgpu_ring *ring = adev->rings[i]; + + if (!amdgpu_ring_sched_ready(ring)) + continue; + + if (amdgpu_fence_count_emitted(ring)) + return true; + } + return false; +} + +/** + * amdgpu_device_should_recover_gpu - check if we should try GPU recovery + * + * @adev: amdgpu_device pointer + * + * Check amdgpu_gpu_recovery and SRIOV status to see if we should try to recover + * a hung GPU. + */ +bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev) +{ + + if (amdgpu_gpu_recovery == 0) + goto disabled; + + /* Skip soft reset check in fatal error mode */ + if (!amdgpu_ras_is_poison_mode_supported(adev)) + return true; + + if (amdgpu_sriov_vf(adev)) + return true; + + if (amdgpu_gpu_recovery == -1) { + switch (adev->asic_type) { +#ifdef CONFIG_DRM_AMDGPU_SI + case CHIP_VERDE: + case CHIP_TAHITI: + case CHIP_PITCAIRN: + case CHIP_OLAND: + case CHIP_HAINAN: +#endif +#ifdef CONFIG_DRM_AMDGPU_CIK + case CHIP_KAVERI: + case CHIP_KABINI: + case CHIP_MULLINS: +#endif + case CHIP_CARRIZO: + case CHIP_STONEY: + case CHIP_CYAN_SKILLFISH: + goto disabled; + default: + break; + } + } + + return true; + +disabled: + dev_info(adev->dev, "GPU recovery disabled.\n"); + return false; +} + +int amdgpu_device_mode1_reset(struct amdgpu_device *adev) +{ + u32 i; + int ret = 0; + + if (adev->bios) + amdgpu_atombios_scratch_regs_engine_hung(adev, true); + + dev_info(adev->dev, "GPU mode1 reset\n"); + + /* Cache the state before bus master disable. The saved config space + * values are used in other cases like restore after mode-2 reset. + */ + amdgpu_device_cache_pci_state(adev->pdev); + + /* disable BM */ + pci_clear_master(adev->pdev); + + if (amdgpu_dpm_is_mode1_reset_supported(adev)) { + dev_info(adev->dev, "GPU smu mode1 reset\n"); + ret = amdgpu_dpm_mode1_reset(adev); + } else { + dev_info(adev->dev, "GPU psp mode1 reset\n"); + ret = psp_gpu_reset(adev); + } + + if (ret) + goto mode1_reset_failed; + + amdgpu_device_load_pci_state(adev->pdev); + ret = amdgpu_psp_wait_for_bootloader(adev); + if (ret) + goto mode1_reset_failed; + + /* wait for asic to come out of reset */ + for (i = 0; i < adev->usec_timeout; i++) { + u32 memsize = adev->nbio.funcs->get_memsize(adev); + + if (memsize != 0xffffffff) + break; + udelay(1); + } + + if (i >= adev->usec_timeout) { + ret = -ETIMEDOUT; + goto mode1_reset_failed; + } + + if (adev->bios) + amdgpu_atombios_scratch_regs_engine_hung(adev, false); + + return 0; + +mode1_reset_failed: + dev_err(adev->dev, "GPU mode1 reset failed\n"); + return ret; +} + +int amdgpu_device_link_reset(struct amdgpu_device *adev) +{ + int ret = 0; + + dev_info(adev->dev, "GPU link reset\n"); + + if (!amdgpu_reset_in_dpc(adev)) + ret = amdgpu_dpm_link_reset(adev); + + if (ret) + goto link_reset_failed; + + ret = amdgpu_psp_wait_for_bootloader(adev); + if (ret) + goto link_reset_failed; + + return 0; + +link_reset_failed: + dev_err(adev->dev, "GPU link reset failed\n"); + return ret; +} + +int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev, + struct amdgpu_reset_context *reset_context) +{ + int i, r = 0; + struct amdgpu_job *job = NULL; + struct amdgpu_device *tmp_adev = reset_context->reset_req_dev; + bool need_full_reset = + test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags); + + if (reset_context->reset_req_dev == adev) + job = reset_context->job; + + if (amdgpu_sriov_vf(adev)) + amdgpu_virt_pre_reset(adev); + + amdgpu_fence_driver_isr_toggle(adev, true); + + /* block all schedulers and reset given job's ring */ + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { + struct amdgpu_ring *ring = adev->rings[i]; + + if (!amdgpu_ring_sched_ready(ring)) + continue; + + /* after all hw jobs are reset, hw fence is meaningless, so force_completion */ + amdgpu_fence_driver_force_completion(ring); + } + + amdgpu_fence_driver_isr_toggle(adev, false); + + if (job && job->vm) + drm_sched_increase_karma(&job->base); + + r = amdgpu_reset_prepare_hwcontext(adev, reset_context); + /* If reset handler not implemented, continue; otherwise return */ + if (r == -EOPNOTSUPP) + r = 0; + else + return r; + + /* Don't suspend on bare metal if we are not going to HW reset the ASIC */ + if (!amdgpu_sriov_vf(adev)) { + + if (!need_full_reset) + need_full_reset = amdgpu_device_ip_need_full_reset(adev); + + if (!need_full_reset && amdgpu_gpu_recovery && + amdgpu_device_ip_check_soft_reset(adev)) { + amdgpu_device_ip_pre_soft_reset(adev); + r = amdgpu_device_ip_soft_reset(adev); + amdgpu_device_ip_post_soft_reset(adev); + if (r || amdgpu_device_ip_check_soft_reset(adev)) { + dev_info(adev->dev, "soft reset failed, will fallback to full reset!\n"); + need_full_reset = true; + } + } + + if (!test_bit(AMDGPU_SKIP_COREDUMP, &reset_context->flags)) { + dev_info(tmp_adev->dev, "Dumping IP State\n"); + /* Trigger ip dump before we reset the asic */ + for (i = 0; i < tmp_adev->num_ip_blocks; i++) + if (tmp_adev->ip_blocks[i].version->funcs->dump_ip_state) + tmp_adev->ip_blocks[i].version->funcs + ->dump_ip_state((void *)&tmp_adev->ip_blocks[i]); + dev_info(tmp_adev->dev, "Dumping IP State Completed\n"); + } + + if (need_full_reset) + r = amdgpu_device_ip_suspend(adev); + if (need_full_reset) + set_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags); + else + clear_bit(AMDGPU_NEED_FULL_RESET, + &reset_context->flags); + } + + return r; +} + +int amdgpu_device_reinit_after_reset(struct amdgpu_reset_context *reset_context) +{ + struct list_head *device_list_handle; + bool full_reset, vram_lost = false; + struct amdgpu_device *tmp_adev; + int r, init_level; + + device_list_handle = reset_context->reset_device_list; + + if (!device_list_handle) + return -EINVAL; + + full_reset = test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags); + + /** + * If it's reset on init, it's default init level, otherwise keep level + * as recovery level. + */ + if (reset_context->method == AMD_RESET_METHOD_ON_INIT) + init_level = AMDGPU_INIT_LEVEL_DEFAULT; + else + init_level = AMDGPU_INIT_LEVEL_RESET_RECOVERY; + + r = 0; + list_for_each_entry(tmp_adev, device_list_handle, reset_list) { + amdgpu_set_init_level(tmp_adev, init_level); + if (full_reset) { + /* post card */ + amdgpu_reset_set_dpc_status(tmp_adev, false); + amdgpu_ras_clear_err_state(tmp_adev); + r = amdgpu_device_asic_init(tmp_adev); + if (r) { + dev_warn(tmp_adev->dev, "asic atom init failed!"); + } else { + dev_info(tmp_adev->dev, "GPU reset succeeded, trying to resume\n"); + + r = amdgpu_device_ip_resume_phase1(tmp_adev); + if (r) + goto out; + + vram_lost = amdgpu_device_check_vram_lost(tmp_adev); + + if (!test_bit(AMDGPU_SKIP_COREDUMP, &reset_context->flags)) + amdgpu_coredump(tmp_adev, false, vram_lost, reset_context->job); + + if (vram_lost) { + dev_info( + tmp_adev->dev, + "VRAM is lost due to GPU reset!\n"); + amdgpu_inc_vram_lost(tmp_adev); + } + + r = amdgpu_device_fw_loading(tmp_adev); + if (r) + return r; + + r = amdgpu_xcp_restore_partition_mode( + tmp_adev->xcp_mgr); + if (r) + goto out; + + r = amdgpu_device_ip_resume_phase2(tmp_adev); + if (r) + goto out; + + if (tmp_adev->mman.buffer_funcs_ring->sched.ready) + amdgpu_ttm_set_buffer_funcs_status(tmp_adev, true); + + r = amdgpu_device_ip_resume_phase3(tmp_adev); + if (r) + goto out; + + if (vram_lost) + amdgpu_device_fill_reset_magic(tmp_adev); + + /* + * Add this ASIC as tracked as reset was already + * complete successfully. + */ + amdgpu_register_gpu_instance(tmp_adev); + + if (!reset_context->hive && + tmp_adev->gmc.xgmi.num_physical_nodes > 1) + amdgpu_xgmi_add_device(tmp_adev); + + r = amdgpu_device_ip_late_init(tmp_adev); + if (r) + goto out; + + r = amdgpu_userq_post_reset(tmp_adev, vram_lost); + if (r) + goto out; + + drm_client_dev_resume(adev_to_drm(tmp_adev)); + + /* + * The GPU enters bad state once faulty pages + * by ECC has reached the threshold, and ras + * recovery is scheduled next. So add one check + * here to break recovery if it indeed exceeds + * bad page threshold, and remind user to + * retire this GPU or setting one bigger + * bad_page_threshold value to fix this once + * probing driver again. + */ + if (!amdgpu_ras_is_rma(tmp_adev)) { + /* must succeed. */ + amdgpu_ras_resume(tmp_adev); + } else { + r = -EINVAL; + goto out; + } + + /* Update PSP FW topology after reset */ + if (reset_context->hive && + tmp_adev->gmc.xgmi.num_physical_nodes > 1) + r = amdgpu_xgmi_update_topology( + reset_context->hive, tmp_adev); + } + } + +out: + if (!r) { + /* IP init is complete now, set level as default */ + amdgpu_set_init_level(tmp_adev, + AMDGPU_INIT_LEVEL_DEFAULT); + amdgpu_irq_gpu_reset_resume_helper(tmp_adev); + r = amdgpu_ib_ring_tests(tmp_adev); + if (r) { + dev_err(tmp_adev->dev, "ib ring test failed (%d).\n", r); + r = -EAGAIN; + goto end; + } + } + + if (r) + tmp_adev->asic_reset_res = r; + } + +end: + return r; +} + +int amdgpu_do_asic_reset(struct list_head *device_list_handle, + struct amdgpu_reset_context *reset_context) +{ + struct amdgpu_device *tmp_adev = NULL; + bool need_full_reset, skip_hw_reset; + int r = 0; + + /* Try reset handler method first */ + tmp_adev = list_first_entry(device_list_handle, struct amdgpu_device, + reset_list); + + reset_context->reset_device_list = device_list_handle; + r = amdgpu_reset_perform_reset(tmp_adev, reset_context); + /* If reset handler not implemented, continue; otherwise return */ + if (r == -EOPNOTSUPP) + r = 0; + else + return r; + + /* Reset handler not implemented, use the default method */ + need_full_reset = + test_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags); + skip_hw_reset = test_bit(AMDGPU_SKIP_HW_RESET, &reset_context->flags); + + /* + * ASIC reset has to be done on all XGMI hive nodes ASAP + * to allow proper links negotiation in FW (within 1 sec) + */ + if (!skip_hw_reset && need_full_reset) { + list_for_each_entry(tmp_adev, device_list_handle, reset_list) { + /* For XGMI run all resets in parallel to speed up the process */ + if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) { + if (!queue_work(system_unbound_wq, + &tmp_adev->xgmi_reset_work)) + r = -EALREADY; + } else + r = amdgpu_asic_reset(tmp_adev); + + if (r) { + dev_err(tmp_adev->dev, + "ASIC reset failed with error, %d for drm dev, %s", + r, adev_to_drm(tmp_adev)->unique); + goto out; + } + } + + /* For XGMI wait for all resets to complete before proceed */ + if (!r) { + list_for_each_entry(tmp_adev, device_list_handle, + reset_list) { + if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) { + flush_work(&tmp_adev->xgmi_reset_work); + r = tmp_adev->asic_reset_res; + if (r) + break; + } + } + } + } + + if (!r && amdgpu_ras_intr_triggered()) { + list_for_each_entry(tmp_adev, device_list_handle, reset_list) { + amdgpu_ras_reset_error_count(tmp_adev, + AMDGPU_RAS_BLOCK__MMHUB); + } + + amdgpu_ras_intr_cleared(); + } + + r = amdgpu_device_reinit_after_reset(reset_context); + if (r == -EAGAIN) + set_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags); + else + clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context->flags); + +out: + return r; +} + +static void amdgpu_device_set_mp1_state(struct amdgpu_device *adev) +{ + + switch (amdgpu_asic_reset_method(adev)) { + case AMD_RESET_METHOD_MODE1: + case AMD_RESET_METHOD_LINK: + adev->mp1_state = PP_MP1_STATE_SHUTDOWN; + break; + case AMD_RESET_METHOD_MODE2: + adev->mp1_state = PP_MP1_STATE_RESET; + break; + default: + adev->mp1_state = PP_MP1_STATE_NONE; + break; + } +} + +static void amdgpu_device_unset_mp1_state(struct amdgpu_device *adev) +{ + amdgpu_vf_error_trans_all(adev); + adev->mp1_state = PP_MP1_STATE_NONE; +} + +static void amdgpu_device_resume_display_audio(struct amdgpu_device *adev) +{ + struct pci_dev *p = NULL; + + p = pci_get_domain_bus_and_slot(pci_domain_nr(adev->pdev->bus), + adev->pdev->bus->number, 1); + if (p) { + pm_runtime_enable(&(p->dev)); + pm_runtime_resume(&(p->dev)); + } + + pci_dev_put(p); +} + +static int amdgpu_device_suspend_display_audio(struct amdgpu_device *adev) +{ + enum amd_reset_method reset_method; + struct pci_dev *p = NULL; + u64 expires; + + /* + * For now, only BACO and mode1 reset are confirmed + * to suffer the audio issue without proper suspended. + */ + reset_method = amdgpu_asic_reset_method(adev); + if ((reset_method != AMD_RESET_METHOD_BACO) && + (reset_method != AMD_RESET_METHOD_MODE1)) + return -EINVAL; + + p = pci_get_domain_bus_and_slot(pci_domain_nr(adev->pdev->bus), + adev->pdev->bus->number, 1); + if (!p) + return -ENODEV; + + expires = pm_runtime_autosuspend_expiration(&(p->dev)); + if (!expires) + /* + * If we cannot get the audio device autosuspend delay, + * a fixed 4S interval will be used. Considering 3S is + * the audio controller default autosuspend delay setting. + * 4S used here is guaranteed to cover that. + */ + expires = ktime_get_mono_fast_ns() + NSEC_PER_SEC * 4ULL; + + while (!pm_runtime_status_suspended(&(p->dev))) { + if (!pm_runtime_suspend(&(p->dev))) + break; + + if (expires < ktime_get_mono_fast_ns()) { + dev_warn(adev->dev, "failed to suspend display audio\n"); + pci_dev_put(p); + /* TODO: abort the succeeding gpu reset? */ + return -ETIMEDOUT; + } + } + + pm_runtime_disable(&(p->dev)); + + pci_dev_put(p); + return 0; +} + +static inline void amdgpu_device_stop_pending_resets(struct amdgpu_device *adev) +{ + struct amdgpu_ras *con = amdgpu_ras_get_context(adev); + +#if defined(CONFIG_DEBUG_FS) + if (!amdgpu_sriov_vf(adev)) + cancel_work(&adev->reset_work); +#endif + cancel_work(&adev->userq_reset_work); + + if (adev->kfd.dev) + cancel_work(&adev->kfd.reset_work); + + if (amdgpu_sriov_vf(adev)) + cancel_work(&adev->virt.flr_work); + + if (con && adev->ras_enabled) + cancel_work(&con->recovery_work); + +} + +static int amdgpu_device_health_check(struct list_head *device_list_handle) +{ + struct amdgpu_device *tmp_adev; + int ret = 0; + + list_for_each_entry(tmp_adev, device_list_handle, reset_list) { + ret |= amdgpu_device_bus_status_check(tmp_adev); + } + + return ret; +} + +static void amdgpu_device_recovery_prepare(struct amdgpu_device *adev, + struct list_head *device_list, + struct amdgpu_hive_info *hive) +{ + struct amdgpu_device *tmp_adev = NULL; + + /* + * Build list of devices to reset. + * In case we are in XGMI hive mode, resort the device list + * to put adev in the 1st position. + */ + if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1) && hive) { + list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) { + list_add_tail(&tmp_adev->reset_list, device_list); + if (adev->shutdown) + tmp_adev->shutdown = true; + if (amdgpu_reset_in_dpc(adev)) + tmp_adev->pcie_reset_ctx.in_link_reset = true; + } + if (!list_is_first(&adev->reset_list, device_list)) + list_rotate_to_front(&adev->reset_list, device_list); + } else { + list_add_tail(&adev->reset_list, device_list); + } +} + +static void amdgpu_device_recovery_get_reset_lock(struct amdgpu_device *adev, + struct list_head *device_list) +{ + struct amdgpu_device *tmp_adev = NULL; + + if (list_empty(device_list)) + return; + tmp_adev = + list_first_entry(device_list, struct amdgpu_device, reset_list); + amdgpu_device_lock_reset_domain(tmp_adev->reset_domain); +} + +static void amdgpu_device_recovery_put_reset_lock(struct amdgpu_device *adev, + struct list_head *device_list) +{ + struct amdgpu_device *tmp_adev = NULL; + + if (list_empty(device_list)) + return; + tmp_adev = + list_first_entry(device_list, struct amdgpu_device, reset_list); + amdgpu_device_unlock_reset_domain(tmp_adev->reset_domain); +} + +static void amdgpu_device_halt_activities(struct amdgpu_device *adev, + struct amdgpu_job *job, + struct amdgpu_reset_context *reset_context, + struct list_head *device_list, + struct amdgpu_hive_info *hive, + bool need_emergency_restart) +{ + struct amdgpu_device *tmp_adev = NULL; + int i; + + /* block all schedulers and reset given job's ring */ + list_for_each_entry(tmp_adev, device_list, reset_list) { + amdgpu_device_set_mp1_state(tmp_adev); + + /* + * Try to put the audio codec into suspend state + * before gpu reset started. + * + * Due to the power domain of the graphics device + * is shared with AZ power domain. Without this, + * we may change the audio hardware from behind + * the audio driver's back. That will trigger + * some audio codec errors. + */ + if (!amdgpu_device_suspend_display_audio(tmp_adev)) + tmp_adev->pcie_reset_ctx.audio_suspended = true; + + amdgpu_ras_set_error_query_ready(tmp_adev, false); + + cancel_delayed_work_sync(&tmp_adev->delayed_init_work); + + amdgpu_amdkfd_pre_reset(tmp_adev, reset_context); + + /* + * Mark these ASICs to be reset as untracked first + * And add them back after reset completed + */ + amdgpu_unregister_gpu_instance(tmp_adev); + + drm_client_dev_suspend(adev_to_drm(tmp_adev)); + + /* disable ras on ALL IPs */ + if (!need_emergency_restart && !amdgpu_reset_in_dpc(adev) && + amdgpu_device_ip_need_full_reset(tmp_adev)) + amdgpu_ras_suspend(tmp_adev); + + amdgpu_userq_pre_reset(tmp_adev); + + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { + struct amdgpu_ring *ring = tmp_adev->rings[i]; + + if (!amdgpu_ring_sched_ready(ring)) + continue; + + drm_sched_stop(&ring->sched, job ? &job->base : NULL); + + if (need_emergency_restart) + amdgpu_job_stop_all_jobs_on_sched(&ring->sched); + } + atomic_inc(&tmp_adev->gpu_reset_counter); + } +} + +static int amdgpu_device_asic_reset(struct amdgpu_device *adev, + struct list_head *device_list, + struct amdgpu_reset_context *reset_context) +{ + struct amdgpu_device *tmp_adev = NULL; + int retry_limit = AMDGPU_MAX_RETRY_LIMIT; + int r = 0; + +retry: /* Rest of adevs pre asic reset from XGMI hive. */ + list_for_each_entry(tmp_adev, device_list, reset_list) { + r = amdgpu_device_pre_asic_reset(tmp_adev, reset_context); + /*TODO Should we stop ?*/ + if (r) { + dev_err(tmp_adev->dev, "GPU pre asic reset failed with err, %d for drm dev, %s ", + r, adev_to_drm(tmp_adev)->unique); + tmp_adev->asic_reset_res = r; + } + } + + /* Actual ASIC resets if needed.*/ + /* Host driver will handle XGMI hive reset for SRIOV */ + if (amdgpu_sriov_vf(adev)) { + + /* Bail out of reset early */ + if (amdgpu_ras_is_rma(adev)) + return -ENODEV; + + if (amdgpu_ras_get_fed_status(adev) || amdgpu_virt_rcvd_ras_interrupt(adev)) { + dev_dbg(adev->dev, "Detected RAS error, wait for FLR completion\n"); + amdgpu_ras_set_fed(adev, true); + set_bit(AMDGPU_HOST_FLR, &reset_context->flags); + } + + r = amdgpu_device_reset_sriov(adev, reset_context); + if (AMDGPU_RETRY_SRIOV_RESET(r) && (retry_limit--) > 0) { + amdgpu_virt_release_full_gpu(adev, true); + goto retry; + } + if (r) + adev->asic_reset_res = r; + } else { + r = amdgpu_do_asic_reset(device_list, reset_context); + if (r && r == -EAGAIN) + goto retry; + } + + list_for_each_entry(tmp_adev, device_list, reset_list) { + /* + * Drop any pending non scheduler resets queued before reset is done. + * Any reset scheduled after this point would be valid. Scheduler resets + * were already dropped during drm_sched_stop and no new ones can come + * in before drm_sched_start. + */ + amdgpu_device_stop_pending_resets(tmp_adev); + } + + return r; +} + +static int amdgpu_device_sched_resume(struct list_head *device_list, + struct amdgpu_reset_context *reset_context, + bool job_signaled) +{ + struct amdgpu_device *tmp_adev = NULL; + int i, r = 0; + + /* Post ASIC reset for all devs .*/ + list_for_each_entry(tmp_adev, device_list, reset_list) { + + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) { + struct amdgpu_ring *ring = tmp_adev->rings[i]; + + if (!amdgpu_ring_sched_ready(ring)) + continue; + + drm_sched_start(&ring->sched, 0); + } + + if (!drm_drv_uses_atomic_modeset(adev_to_drm(tmp_adev)) && !job_signaled) + drm_helper_resume_force_mode(adev_to_drm(tmp_adev)); + + if (tmp_adev->asic_reset_res) { + /* bad news, how to tell it to userspace ? + * for ras error, we should report GPU bad status instead of + * reset failure + */ + if (reset_context->src != AMDGPU_RESET_SRC_RAS || + !amdgpu_ras_eeprom_check_err_threshold(tmp_adev)) + dev_info( + tmp_adev->dev, + "GPU reset(%d) failed with error %d \n", + atomic_read( + &tmp_adev->gpu_reset_counter), + tmp_adev->asic_reset_res); + amdgpu_vf_error_put(tmp_adev, + AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, + tmp_adev->asic_reset_res); + if (!r) + r = tmp_adev->asic_reset_res; + tmp_adev->asic_reset_res = 0; + } else { + dev_info(tmp_adev->dev, "GPU reset(%d) succeeded!\n", + atomic_read(&tmp_adev->gpu_reset_counter)); + if (amdgpu_acpi_smart_shift_update(tmp_adev, + AMDGPU_SS_DEV_D0)) + dev_warn(tmp_adev->dev, + "smart shift update failed\n"); + } + } + + return r; +} + +static void amdgpu_device_gpu_resume(struct amdgpu_device *adev, + struct list_head *device_list, + bool need_emergency_restart) +{ + struct amdgpu_device *tmp_adev = NULL; + + list_for_each_entry(tmp_adev, device_list, reset_list) { + /* unlock kfd: SRIOV would do it separately */ + if (!need_emergency_restart && !amdgpu_sriov_vf(tmp_adev)) + amdgpu_amdkfd_post_reset(tmp_adev); + + /* kfd_post_reset will do nothing if kfd device is not initialized, + * need to bring up kfd here if it's not be initialized before + */ + if (!adev->kfd.init_complete) + amdgpu_amdkfd_device_init(adev); + + if (tmp_adev->pcie_reset_ctx.audio_suspended) + amdgpu_device_resume_display_audio(tmp_adev); + + amdgpu_device_unset_mp1_state(tmp_adev); + + amdgpu_ras_set_error_query_ready(tmp_adev, true); + + } +} + + +/** + * amdgpu_device_gpu_recover - reset the asic and recover scheduler + * + * @adev: amdgpu_device pointer + * @job: which job trigger hang + * @reset_context: amdgpu reset context pointer + * + * Attempt to reset the GPU if it has hung (all asics). + * Attempt to do soft-reset or full-reset and reinitialize Asic + * Returns 0 for success or an error on failure. + */ + +int amdgpu_device_gpu_recover(struct amdgpu_device *adev, + struct amdgpu_job *job, + struct amdgpu_reset_context *reset_context) +{ + struct list_head device_list; + bool job_signaled = false; + struct amdgpu_hive_info *hive = NULL; + int r = 0; + bool need_emergency_restart = false; + + /* + * If it reaches here because of hang/timeout and a RAS error is + * detected at the same time, let RAS recovery take care of it. + */ + if (amdgpu_ras_is_err_state(adev, AMDGPU_RAS_BLOCK__ANY) && + !amdgpu_sriov_vf(adev) && + reset_context->src != AMDGPU_RESET_SRC_RAS) { + dev_dbg(adev->dev, + "Gpu recovery from source: %d yielding to RAS error recovery handling", + reset_context->src); + return 0; + } + + /* + * Special case: RAS triggered and full reset isn't supported + */ + need_emergency_restart = amdgpu_ras_need_emergency_restart(adev); + + /* + * Flush RAM to disk so that after reboot + * the user can read log and see why the system rebooted. + */ + if (need_emergency_restart && amdgpu_ras_get_context(adev) && + amdgpu_ras_get_context(adev)->reboot) { + dev_warn(adev->dev, "Emergency reboot."); + + ksys_sync_helper(); + emergency_restart(); + } + + dev_info(adev->dev, "GPU %s begin!. Source: %d\n", + need_emergency_restart ? "jobs stop" : "reset", + reset_context->src); + + if (!amdgpu_sriov_vf(adev)) + hive = amdgpu_get_xgmi_hive(adev); + if (hive) + mutex_lock(&hive->hive_lock); + + reset_context->job = job; + reset_context->hive = hive; + INIT_LIST_HEAD(&device_list); + + amdgpu_device_recovery_prepare(adev, &device_list, hive); + + if (!amdgpu_sriov_vf(adev)) { + r = amdgpu_device_health_check(&device_list); + if (r) + goto end_reset; + } + + /* Cannot be called after locking reset domain */ + amdgpu_ras_pre_reset(adev, &device_list); + + /* We need to lock reset domain only once both for XGMI and single device */ + amdgpu_device_recovery_get_reset_lock(adev, &device_list); + + amdgpu_device_halt_activities(adev, job, reset_context, &device_list, + hive, need_emergency_restart); + if (need_emergency_restart) + goto skip_sched_resume; + /* + * Must check guilty signal here since after this point all old + * HW fences are force signaled. + * + * job->base holds a reference to parent fence + */ + if (job && dma_fence_is_signaled(&job->hw_fence->base)) { + job_signaled = true; + dev_info(adev->dev, "Guilty job already signaled, skipping HW reset"); + goto skip_hw_reset; + } + + r = amdgpu_device_asic_reset(adev, &device_list, reset_context); + if (r) + goto reset_unlock; +skip_hw_reset: + r = amdgpu_device_sched_resume(&device_list, reset_context, job_signaled); + if (r) + goto reset_unlock; +skip_sched_resume: + amdgpu_device_gpu_resume(adev, &device_list, need_emergency_restart); +reset_unlock: + amdgpu_device_recovery_put_reset_lock(adev, &device_list); + amdgpu_ras_post_reset(adev, &device_list); +end_reset: + if (hive) { + mutex_unlock(&hive->hive_lock); + amdgpu_put_xgmi_hive(hive); + } + + if (r) + dev_info(adev->dev, "GPU reset end with ret = %d\n", r); + + atomic_set(&adev->reset_domain->reset_res, r); + + if (!r) { + struct amdgpu_task_info *ti = NULL; + + if (job) + ti = amdgpu_vm_get_task_info_pasid(adev, job->pasid); + + drm_dev_wedged_event(adev_to_drm(adev), DRM_WEDGE_RECOVERY_NONE, + ti ? &ti->task : NULL); + + amdgpu_vm_put_task_info(ti); + } + + return r; +} + +/** + * amdgpu_device_partner_bandwidth - find the bandwidth of appropriate partner + * + * @adev: amdgpu_device pointer + * @speed: pointer to the speed of the link + * @width: pointer to the width of the link + * + * Evaluate the hierarchy to find the speed and bandwidth capabilities of the + * first physical partner to an AMD dGPU. + * This will exclude any virtual switches and links. + */ +static void amdgpu_device_partner_bandwidth(struct amdgpu_device *adev, + enum pci_bus_speed *speed, + enum pcie_link_width *width) +{ + struct pci_dev *parent = adev->pdev; + + if (!speed || !width) + return; + + *speed = PCI_SPEED_UNKNOWN; + *width = PCIE_LNK_WIDTH_UNKNOWN; + + if (amdgpu_device_pcie_dynamic_switching_supported(adev)) { + while ((parent = pci_upstream_bridge(parent))) { + /* skip upstream/downstream switches internal to dGPU*/ + if (parent->vendor == PCI_VENDOR_ID_ATI) + continue; + *speed = pcie_get_speed_cap(parent); + *width = pcie_get_width_cap(parent); + break; + } + } else { + /* use the current speeds rather than max if switching is not supported */ + pcie_bandwidth_available(adev->pdev, NULL, speed, width); + } +} + +/** + * amdgpu_device_gpu_bandwidth - find the bandwidth of the GPU + * + * @adev: amdgpu_device pointer + * @speed: pointer to the speed of the link + * @width: pointer to the width of the link + * + * Evaluate the hierarchy to find the speed and bandwidth capabilities of the + * AMD dGPU which may be a virtual upstream bridge. + */ +static void amdgpu_device_gpu_bandwidth(struct amdgpu_device *adev, + enum pci_bus_speed *speed, + enum pcie_link_width *width) +{ + struct pci_dev *parent = adev->pdev; + + if (!speed || !width) + return; + + parent = pci_upstream_bridge(parent); + if (parent && parent->vendor == PCI_VENDOR_ID_ATI) { + /* use the upstream/downstream switches internal to dGPU */ + *speed = pcie_get_speed_cap(parent); + *width = pcie_get_width_cap(parent); + while ((parent = pci_upstream_bridge(parent))) { + if (parent->vendor == PCI_VENDOR_ID_ATI) { + /* use the upstream/downstream switches internal to dGPU */ + *speed = pcie_get_speed_cap(parent); + *width = pcie_get_width_cap(parent); + } + } + } else { + /* use the device itself */ + *speed = pcie_get_speed_cap(adev->pdev); + *width = pcie_get_width_cap(adev->pdev); + } +} + +/** + * amdgpu_device_get_pcie_info - fence pcie info about the PCIE slot + * + * @adev: amdgpu_device pointer + * + * Fetches and stores in the driver the PCIE capabilities (gen speed + * and lanes) of the slot the device is in. Handles APUs and + * virtualized environments where PCIE config space may not be available. + */ +static void amdgpu_device_get_pcie_info(struct amdgpu_device *adev) +{ + enum pci_bus_speed speed_cap, platform_speed_cap; + enum pcie_link_width platform_link_width, link_width; + + if (amdgpu_pcie_gen_cap) + adev->pm.pcie_gen_mask = amdgpu_pcie_gen_cap; + + if (amdgpu_pcie_lane_cap) + adev->pm.pcie_mlw_mask = amdgpu_pcie_lane_cap; + + /* covers APUs as well */ + if (pci_is_root_bus(adev->pdev->bus) && !amdgpu_passthrough(adev)) { + if (adev->pm.pcie_gen_mask == 0) + adev->pm.pcie_gen_mask = AMDGPU_DEFAULT_PCIE_GEN_MASK; + if (adev->pm.pcie_mlw_mask == 0) + adev->pm.pcie_mlw_mask = AMDGPU_DEFAULT_PCIE_MLW_MASK; + return; + } + + if (adev->pm.pcie_gen_mask && adev->pm.pcie_mlw_mask) + return; + + amdgpu_device_partner_bandwidth(adev, &platform_speed_cap, + &platform_link_width); + amdgpu_device_gpu_bandwidth(adev, &speed_cap, &link_width); + + if (adev->pm.pcie_gen_mask == 0) { + /* asic caps */ + if (speed_cap == PCI_SPEED_UNKNOWN) { + adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3); + } else { + if (speed_cap == PCIE_SPEED_32_0GT) + adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN4 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN5); + else if (speed_cap == PCIE_SPEED_16_0GT) + adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN4); + else if (speed_cap == PCIE_SPEED_8_0GT) + adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3); + else if (speed_cap == PCIE_SPEED_5_0GT) + adev->pm.pcie_gen_mask |= (CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN2); + else + adev->pm.pcie_gen_mask |= CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN1; + } + /* platform caps */ + if (platform_speed_cap == PCI_SPEED_UNKNOWN) { + adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2); + } else { + if (platform_speed_cap == PCIE_SPEED_32_0GT) + adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN5); + else if (platform_speed_cap == PCIE_SPEED_16_0GT) + adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN4); + else if (platform_speed_cap == PCIE_SPEED_8_0GT) + adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN3); + else if (platform_speed_cap == PCIE_SPEED_5_0GT) + adev->pm.pcie_gen_mask |= (CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1 | + CAIL_PCIE_LINK_SPEED_SUPPORT_GEN2); + else + adev->pm.pcie_gen_mask |= CAIL_PCIE_LINK_SPEED_SUPPORT_GEN1; + + } + } + if (adev->pm.pcie_mlw_mask == 0) { + /* asic caps */ + if (link_width == PCIE_LNK_WIDTH_UNKNOWN) { + adev->pm.pcie_mlw_mask |= AMDGPU_DEFAULT_ASIC_PCIE_MLW_MASK; + } else { + switch (link_width) { + case PCIE_LNK_X32: + adev->pm.pcie_mlw_mask |= (CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X32 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X16 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X16: + adev->pm.pcie_mlw_mask |= (CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X16 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X12: + adev->pm.pcie_mlw_mask |= (CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X8: + adev->pm.pcie_mlw_mask |= (CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X4: + adev->pm.pcie_mlw_mask |= (CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X2: + adev->pm.pcie_mlw_mask |= (CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X1: + adev->pm.pcie_mlw_mask |= CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1; + break; + default: + break; + } + } + /* platform caps */ + if (platform_link_width == PCIE_LNK_WIDTH_UNKNOWN) { + adev->pm.pcie_mlw_mask |= AMDGPU_DEFAULT_PCIE_MLW_MASK; + } else { + switch (platform_link_width) { + case PCIE_LNK_X32: + adev->pm.pcie_mlw_mask |= (CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X16: + adev->pm.pcie_mlw_mask |= (CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X12: + adev->pm.pcie_mlw_mask |= (CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X8: + adev->pm.pcie_mlw_mask |= (CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X4: + adev->pm.pcie_mlw_mask |= (CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X2: + adev->pm.pcie_mlw_mask |= (CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 | + CAIL_PCIE_LINK_WIDTH_SUPPORT_X1); + break; + case PCIE_LNK_X1: + adev->pm.pcie_mlw_mask |= CAIL_PCIE_LINK_WIDTH_SUPPORT_X1; + break; + default: + break; + } + } + } +} + +/** + * amdgpu_device_is_peer_accessible - Check peer access through PCIe BAR + * + * @adev: amdgpu_device pointer + * @peer_adev: amdgpu_device pointer for peer device trying to access @adev + * + * Return true if @peer_adev can access (DMA) @adev through the PCIe + * BAR, i.e. @adev is "large BAR" and the BAR matches the DMA mask of + * @peer_adev. + */ +bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev, + struct amdgpu_device *peer_adev) +{ +#ifdef CONFIG_HSA_AMD_P2P + bool p2p_access = + !adev->gmc.xgmi.connected_to_cpu && + !(pci_p2pdma_distance(adev->pdev, peer_adev->dev, false) < 0); + if (!p2p_access) + dev_info(adev->dev, "PCIe P2P access from peer device %s is not supported by the chipset\n", + pci_name(peer_adev->pdev)); + + bool is_large_bar = adev->gmc.visible_vram_size && + adev->gmc.real_vram_size == adev->gmc.visible_vram_size; + bool p2p_addressable = amdgpu_device_check_iommu_remap(peer_adev); + + if (!p2p_addressable) { + uint64_t address_mask = peer_adev->dev->dma_mask ? + ~*peer_adev->dev->dma_mask : ~((1ULL << 32) - 1); + resource_size_t aper_limit = + adev->gmc.aper_base + adev->gmc.aper_size - 1; + + p2p_addressable = !(adev->gmc.aper_base & address_mask || + aper_limit & address_mask); + } + return pcie_p2p && is_large_bar && p2p_access && p2p_addressable; +#else + return false; +#endif +} + +int amdgpu_device_baco_enter(struct amdgpu_device *adev) +{ + struct amdgpu_ras *ras = amdgpu_ras_get_context(adev); + + if (!amdgpu_device_supports_baco(adev)) + return -ENOTSUPP; + + if (ras && adev->ras_enabled && + adev->nbio.funcs->enable_doorbell_interrupt) + adev->nbio.funcs->enable_doorbell_interrupt(adev, false); + + return amdgpu_dpm_baco_enter(adev); +} + +int amdgpu_device_baco_exit(struct amdgpu_device *adev) +{ + struct amdgpu_ras *ras = amdgpu_ras_get_context(adev); + int ret = 0; + + if (!amdgpu_device_supports_baco(adev)) + return -ENOTSUPP; + + ret = amdgpu_dpm_baco_exit(adev); + if (ret) + return ret; + + if (ras && adev->ras_enabled && + adev->nbio.funcs->enable_doorbell_interrupt) + adev->nbio.funcs->enable_doorbell_interrupt(adev, true); + + if (amdgpu_passthrough(adev) && adev->nbio.funcs && + adev->nbio.funcs->clear_doorbell_interrupt) + adev->nbio.funcs->clear_doorbell_interrupt(adev); + + return 0; +} + +/** + * amdgpu_pci_error_detected - Called when a PCI error is detected. + * @pdev: PCI device struct + * @state: PCI channel state + * + * Description: Called when a PCI error is detected. + * + * Return: PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT. + */ +pci_ers_result_t amdgpu_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct amdgpu_device *adev = drm_to_adev(dev); + struct amdgpu_hive_info *hive __free(xgmi_put_hive) = + amdgpu_get_xgmi_hive(adev); + struct amdgpu_reset_context reset_context; + struct list_head device_list; + + dev_info(adev->dev, "PCI error: detected callback!!\n"); + + adev->pci_channel_state = state; + + switch (state) { + case pci_channel_io_normal: + dev_info(adev->dev, "pci_channel_io_normal: state(%d)!!\n", state); + return PCI_ERS_RESULT_CAN_RECOVER; + case pci_channel_io_frozen: + /* Fatal error, prepare for slot reset */ + dev_info(adev->dev, "pci_channel_io_frozen: state(%d)!!\n", state); + if (hive) { + /* Hive devices should be able to support FW based + * link reset on other devices, if not return. + */ + if (!amdgpu_dpm_is_link_reset_supported(adev)) { + dev_warn(adev->dev, + "No support for XGMI hive yet...\n"); + return PCI_ERS_RESULT_DISCONNECT; + } + /* Set dpc status only if device is part of hive + * Non-hive devices should be able to recover after + * link reset. + */ + amdgpu_reset_set_dpc_status(adev, true); + + mutex_lock(&hive->hive_lock); + } + memset(&reset_context, 0, sizeof(reset_context)); + INIT_LIST_HEAD(&device_list); + + amdgpu_device_recovery_prepare(adev, &device_list, hive); + amdgpu_device_recovery_get_reset_lock(adev, &device_list); + amdgpu_device_halt_activities(adev, NULL, &reset_context, &device_list, + hive, false); + if (hive) + mutex_unlock(&hive->hive_lock); + return PCI_ERS_RESULT_NEED_RESET; + case pci_channel_io_perm_failure: + /* Permanent error, prepare for device removal */ + dev_info(adev->dev, "pci_channel_io_perm_failure: state(%d)!!\n", state); + return PCI_ERS_RESULT_DISCONNECT; + } + + return PCI_ERS_RESULT_NEED_RESET; +} + +/** + * amdgpu_pci_mmio_enabled - Enable MMIO and dump debug registers + * @pdev: pointer to PCI device + */ +pci_ers_result_t amdgpu_pci_mmio_enabled(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct amdgpu_device *adev = drm_to_adev(dev); + + dev_info(adev->dev, "PCI error: mmio enabled callback!!\n"); + + /* TODO - dump whatever for debugging purposes */ + + /* This called only if amdgpu_pci_error_detected returns + * PCI_ERS_RESULT_CAN_RECOVER. Read/write to the device still + * works, no need to reset slot. + */ + + return PCI_ERS_RESULT_RECOVERED; +} + +/** + * amdgpu_pci_slot_reset - Called when PCI slot has been reset. + * @pdev: PCI device struct + * + * Description: This routine is called by the pci error recovery + * code after the PCI slot has been reset, just before we + * should resume normal operations. + */ +pci_ers_result_t amdgpu_pci_slot_reset(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct amdgpu_device *adev = drm_to_adev(dev); + struct amdgpu_reset_context reset_context; + struct amdgpu_device *tmp_adev; + struct amdgpu_hive_info *hive; + struct list_head device_list; + struct pci_dev *link_dev; + int r = 0, i, timeout; + u32 memsize; + u16 status; + + dev_info(adev->dev, "PCI error: slot reset callback!!\n"); + + memset(&reset_context, 0, sizeof(reset_context)); + + if (adev->pcie_reset_ctx.swus) + link_dev = adev->pcie_reset_ctx.swus; + else + link_dev = adev->pdev; + /* wait for asic to come out of reset, timeout = 10s */ + timeout = 10000; + do { + usleep_range(10000, 10500); + r = pci_read_config_word(link_dev, PCI_VENDOR_ID, &status); + timeout -= 10; + } while (timeout > 0 && (status != PCI_VENDOR_ID_ATI) && + (status != PCI_VENDOR_ID_AMD)); + + if ((status != PCI_VENDOR_ID_ATI) && (status != PCI_VENDOR_ID_AMD)) { + r = -ETIME; + goto out; + } + + amdgpu_device_load_switch_state(adev); + /* Restore PCI confspace */ + amdgpu_device_load_pci_state(pdev); + + /* confirm ASIC came out of reset */ + for (i = 0; i < adev->usec_timeout; i++) { + memsize = amdgpu_asic_get_config_memsize(adev); + + if (memsize != 0xffffffff) + break; + udelay(1); + } + if (memsize == 0xffffffff) { + r = -ETIME; + goto out; + } + + reset_context.method = AMD_RESET_METHOD_NONE; + reset_context.reset_req_dev = adev; + set_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags); + set_bit(AMDGPU_SKIP_COREDUMP, &reset_context.flags); + INIT_LIST_HEAD(&device_list); + + hive = amdgpu_get_xgmi_hive(adev); + if (hive) { + mutex_lock(&hive->hive_lock); + reset_context.hive = hive; + list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) { + tmp_adev->pcie_reset_ctx.in_link_reset = true; + list_add_tail(&tmp_adev->reset_list, &device_list); + } + } else { + set_bit(AMDGPU_SKIP_HW_RESET, &reset_context.flags); + list_add_tail(&adev->reset_list, &device_list); + } + + r = amdgpu_device_asic_reset(adev, &device_list, &reset_context); +out: + if (!r) { + if (amdgpu_device_cache_pci_state(adev->pdev)) + pci_restore_state(adev->pdev); + dev_info(adev->dev, "PCIe error recovery succeeded\n"); + } else { + dev_err(adev->dev, "PCIe error recovery failed, err:%d\n", r); + if (hive) { + list_for_each_entry(tmp_adev, &device_list, reset_list) + amdgpu_device_unset_mp1_state(tmp_adev); + } + amdgpu_device_recovery_put_reset_lock(adev, &device_list); + } + + if (hive) { + mutex_unlock(&hive->hive_lock); + amdgpu_put_xgmi_hive(hive); + } + + return r ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED; +} + +/** + * amdgpu_pci_resume() - resume normal ops after PCI reset + * @pdev: pointer to PCI device + * + * Called when the error recovery driver tells us that its + * OK to resume normal operation. + */ +void amdgpu_pci_resume(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct amdgpu_device *adev = drm_to_adev(dev); + struct list_head device_list; + struct amdgpu_hive_info *hive = NULL; + struct amdgpu_device *tmp_adev = NULL; + + dev_info(adev->dev, "PCI error: resume callback!!\n"); + + /* Only continue execution for the case of pci_channel_io_frozen */ + if (adev->pci_channel_state != pci_channel_io_frozen) + return; + + INIT_LIST_HEAD(&device_list); + + hive = amdgpu_get_xgmi_hive(adev); + if (hive) { + mutex_lock(&hive->hive_lock); + list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) { + tmp_adev->pcie_reset_ctx.in_link_reset = false; + list_add_tail(&tmp_adev->reset_list, &device_list); + } + } else + list_add_tail(&adev->reset_list, &device_list); + + amdgpu_device_sched_resume(&device_list, NULL, NULL); + amdgpu_device_gpu_resume(adev, &device_list, false); + amdgpu_device_recovery_put_reset_lock(adev, &device_list); + + if (hive) { + mutex_unlock(&hive->hive_lock); + amdgpu_put_xgmi_hive(hive); + } +} + +static void amdgpu_device_cache_switch_state(struct amdgpu_device *adev) +{ + struct pci_dev *swus, *swds; + int r; + + swds = pci_upstream_bridge(adev->pdev); + if (!swds || swds->vendor != PCI_VENDOR_ID_ATI || + pci_pcie_type(swds) != PCI_EXP_TYPE_DOWNSTREAM) + return; + swus = pci_upstream_bridge(swds); + if (!swus || + (swus->vendor != PCI_VENDOR_ID_ATI && + swus->vendor != PCI_VENDOR_ID_AMD) || + pci_pcie_type(swus) != PCI_EXP_TYPE_UPSTREAM) + return; + + /* If already saved, return */ + if (adev->pcie_reset_ctx.swus) + return; + /* Upstream bridge is ATI, assume it's SWUS/DS architecture */ + r = pci_save_state(swds); + if (r) + return; + adev->pcie_reset_ctx.swds_pcistate = pci_store_saved_state(swds); + + r = pci_save_state(swus); + if (r) + return; + adev->pcie_reset_ctx.swus_pcistate = pci_store_saved_state(swus); + + adev->pcie_reset_ctx.swus = swus; +} + +static void amdgpu_device_load_switch_state(struct amdgpu_device *adev) +{ + struct pci_dev *pdev; + int r; + + if (!adev->pcie_reset_ctx.swds_pcistate || + !adev->pcie_reset_ctx.swus_pcistate) + return; + + pdev = adev->pcie_reset_ctx.swus; + r = pci_load_saved_state(pdev, adev->pcie_reset_ctx.swus_pcistate); + if (!r) { + pci_restore_state(pdev); + } else { + dev_warn(adev->dev, "Failed to load SWUS state, err:%d\n", r); + return; + } + + pdev = pci_upstream_bridge(adev->pdev); + r = pci_load_saved_state(pdev, adev->pcie_reset_ctx.swds_pcistate); + if (!r) + pci_restore_state(pdev); + else + dev_warn(adev->dev, "Failed to load SWDS state, err:%d\n", r); +} + +bool amdgpu_device_cache_pci_state(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct amdgpu_device *adev = drm_to_adev(dev); + int r; + + if (amdgpu_sriov_vf(adev)) + return false; + + r = pci_save_state(pdev); + if (!r) { + kfree(adev->pci_state); + + adev->pci_state = pci_store_saved_state(pdev); + + if (!adev->pci_state) { + dev_err(adev->dev, "Failed to store PCI saved state"); + return false; + } + } else { + dev_warn(adev->dev, "Failed to save PCI state, err:%d\n", r); + return false; + } + + amdgpu_device_cache_switch_state(adev); + + return true; +} + +bool amdgpu_device_load_pci_state(struct pci_dev *pdev) +{ + struct drm_device *dev = pci_get_drvdata(pdev); + struct amdgpu_device *adev = drm_to_adev(dev); + int r; + + if (!adev->pci_state) + return false; + + r = pci_load_saved_state(pdev, adev->pci_state); + + if (!r) { + pci_restore_state(pdev); + } else { + dev_warn(adev->dev, "Failed to load PCI state, err:%d\n", r); + return false; + } + + return true; +} + +void amdgpu_device_flush_hdp(struct amdgpu_device *adev, + struct amdgpu_ring *ring) +{ +#ifdef CONFIG_X86_64 + if ((adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev)) + return; +#endif + if (adev->gmc.xgmi.connected_to_cpu) + return; + + if (ring && ring->funcs->emit_hdp_flush) { + amdgpu_ring_emit_hdp_flush(ring); + return; + } + + if (!ring && amdgpu_sriov_runtime(adev)) { + if (!amdgpu_kiq_hdp_flush(adev)) + return; + } + + amdgpu_hdp_flush(adev, ring); +} + +void amdgpu_device_invalidate_hdp(struct amdgpu_device *adev, + struct amdgpu_ring *ring) +{ +#ifdef CONFIG_X86_64 + if ((adev->flags & AMD_IS_APU) && !amdgpu_passthrough(adev)) + return; +#endif + if (adev->gmc.xgmi.connected_to_cpu) + return; + + amdgpu_hdp_invalidate(adev, ring); +} + +int amdgpu_in_reset(struct amdgpu_device *adev) +{ + return atomic_read(&adev->reset_domain->in_gpu_reset); +} + +/** + * amdgpu_device_halt() - bring hardware to some kind of halt state + * + * @adev: amdgpu_device pointer + * + * Bring hardware to some kind of halt state so that no one can touch it + * any more. It will help to maintain error context when error occurred. + * Compare to a simple hang, the system will keep stable at least for SSH + * access. Then it should be trivial to inspect the hardware state and + * see what's going on. Implemented as following: + * + * 1. drm_dev_unplug() makes device inaccessible to user space(IOCTLs, etc), + * clears all CPU mappings to device, disallows remappings through page faults + * 2. amdgpu_irq_disable_all() disables all interrupts + * 3. amdgpu_fence_driver_hw_fini() signals all HW fences + * 4. set adev->no_hw_access to avoid potential crashes after setp 5 + * 5. amdgpu_device_unmap_mmio() clears all MMIO mappings + * 6. pci_disable_device() and pci_wait_for_pending_transaction() + * flush any in flight DMA operations + */ +void amdgpu_device_halt(struct amdgpu_device *adev) +{ + struct pci_dev *pdev = adev->pdev; + struct drm_device *ddev = adev_to_drm(adev); + + amdgpu_xcp_dev_unplug(adev); + drm_dev_unplug(ddev); + + amdgpu_irq_disable_all(adev); + + amdgpu_fence_driver_hw_fini(adev); + + adev->no_hw_access = true; + + amdgpu_device_unmap_mmio(adev); + + pci_disable_device(pdev); + pci_wait_for_pending_transaction(pdev); +} + +u32 amdgpu_device_pcie_port_rreg(struct amdgpu_device *adev, + u32 reg) +{ + unsigned long flags, address, data; + u32 r; + + address = adev->nbio.funcs->get_pcie_port_index_offset(adev); + data = adev->nbio.funcs->get_pcie_port_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + WREG32(address, reg * 4); + (void)RREG32(address); + r = RREG32(data); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); + return r; +} + +void amdgpu_device_pcie_port_wreg(struct amdgpu_device *adev, + u32 reg, u32 v) +{ + unsigned long flags, address, data; + + address = adev->nbio.funcs->get_pcie_port_index_offset(adev); + data = adev->nbio.funcs->get_pcie_port_data_offset(adev); + + spin_lock_irqsave(&adev->pcie_idx_lock, flags); + WREG32(address, reg * 4); + (void)RREG32(address); + WREG32(data, v); + (void)RREG32(data); + spin_unlock_irqrestore(&adev->pcie_idx_lock, flags); +} + +/** + * amdgpu_device_get_gang - return a reference to the current gang + * @adev: amdgpu_device pointer + * + * Returns: A new reference to the current gang leader. + */ +struct dma_fence *amdgpu_device_get_gang(struct amdgpu_device *adev) +{ + struct dma_fence *fence; + + rcu_read_lock(); + fence = dma_fence_get_rcu_safe(&adev->gang_submit); + rcu_read_unlock(); + return fence; +} + +/** + * amdgpu_device_switch_gang - switch to a new gang + * @adev: amdgpu_device pointer + * @gang: the gang to switch to + * + * Try to switch to a new gang. + * Returns: NULL if we switched to the new gang or a reference to the current + * gang leader. + */ +struct dma_fence *amdgpu_device_switch_gang(struct amdgpu_device *adev, + struct dma_fence *gang) +{ + struct dma_fence *old = NULL; + + dma_fence_get(gang); + do { + dma_fence_put(old); + old = amdgpu_device_get_gang(adev); + if (old == gang) + break; + + if (!dma_fence_is_signaled(old)) { + dma_fence_put(gang); + return old; + } + + } while (cmpxchg((struct dma_fence __force **)&adev->gang_submit, + old, gang) != old); + + /* + * Drop it once for the exchanged reference in adev and once for the + * thread local reference acquired in amdgpu_device_get_gang(). + */ + dma_fence_put(old); + dma_fence_put(old); + return NULL; +} + +/** + * amdgpu_device_enforce_isolation - enforce HW isolation + * @adev: the amdgpu device pointer + * @ring: the HW ring the job is supposed to run on + * @job: the job which is about to be pushed to the HW ring + * + * Makes sure that only one client at a time can use the GFX block. + * Returns: The dependency to wait on before the job can be pushed to the HW. + * The function is called multiple times until NULL is returned. + */ +struct dma_fence *amdgpu_device_enforce_isolation(struct amdgpu_device *adev, + struct amdgpu_ring *ring, + struct amdgpu_job *job) +{ + struct amdgpu_isolation *isolation = &adev->isolation[ring->xcp_id]; + struct drm_sched_fence *f = job->base.s_fence; + struct dma_fence *dep; + void *owner; + int r; + + /* + * For now enforce isolation only for the GFX block since we only need + * the cleaner shader on those rings. + */ + if (ring->funcs->type != AMDGPU_RING_TYPE_GFX && + ring->funcs->type != AMDGPU_RING_TYPE_COMPUTE) + return NULL; + + /* + * All submissions where enforce isolation is false are handled as if + * they come from a single client. Use ~0l as the owner to distinct it + * from kernel submissions where the owner is NULL. + */ + owner = job->enforce_isolation ? f->owner : (void *)~0l; + + mutex_lock(&adev->enforce_isolation_mutex); + + /* + * The "spearhead" submission is the first one which changes the + * ownership to its client. We always need to wait for it to be + * pushed to the HW before proceeding with anything. + */ + if (&f->scheduled != isolation->spearhead && + !dma_fence_is_signaled(isolation->spearhead)) { + dep = isolation->spearhead; + goto out_grab_ref; + } + + if (isolation->owner != owner) { + + /* + * Wait for any gang to be assembled before switching to a + * different owner or otherwise we could deadlock the + * submissions. + */ + if (!job->gang_submit) { + dep = amdgpu_device_get_gang(adev); + if (!dma_fence_is_signaled(dep)) + goto out_return_dep; + dma_fence_put(dep); + } + + dma_fence_put(isolation->spearhead); + isolation->spearhead = dma_fence_get(&f->scheduled); + amdgpu_sync_move(&isolation->active, &isolation->prev); + trace_amdgpu_isolation(isolation->owner, owner); + isolation->owner = owner; + } + + /* + * Specifying the ring here helps to pipeline submissions even when + * isolation is enabled. If that is not desired for testing NULL can be + * used instead of the ring to enforce a CPU round trip while switching + * between clients. + */ + dep = amdgpu_sync_peek_fence(&isolation->prev, ring); + r = amdgpu_sync_fence(&isolation->active, &f->finished, GFP_NOWAIT); + if (r) + dev_warn(adev->dev, "OOM tracking isolation\n"); + +out_grab_ref: + dma_fence_get(dep); +out_return_dep: + mutex_unlock(&adev->enforce_isolation_mutex); + return dep; +} + +bool amdgpu_device_has_display_hardware(struct amdgpu_device *adev) +{ + switch (adev->asic_type) { +#ifdef CONFIG_DRM_AMDGPU_SI + case CHIP_HAINAN: +#endif + case CHIP_TOPAZ: + /* chips with no display hardware */ + return false; +#ifdef CONFIG_DRM_AMDGPU_SI + case CHIP_TAHITI: + case CHIP_PITCAIRN: + case CHIP_VERDE: + case CHIP_OLAND: +#endif +#ifdef CONFIG_DRM_AMDGPU_CIK + case CHIP_BONAIRE: + case CHIP_HAWAII: + case CHIP_KAVERI: + case CHIP_KABINI: + case CHIP_MULLINS: +#endif + case CHIP_TONGA: + case CHIP_FIJI: + case CHIP_POLARIS10: + case CHIP_POLARIS11: + case CHIP_POLARIS12: + case CHIP_VEGAM: + case CHIP_CARRIZO: + case CHIP_STONEY: + /* chips with display hardware */ + return true; + default: + /* IP discovery */ + if (!amdgpu_ip_version(adev, DCE_HWIP, 0) || + (adev->harvest_ip_mask & AMD_HARVEST_IP_DMU_MASK)) + return false; + return true; + } +} + +uint32_t amdgpu_device_wait_on_rreg(struct amdgpu_device *adev, + uint32_t inst, uint32_t reg_addr, char reg_name[], + uint32_t expected_value, uint32_t mask) +{ + uint32_t ret = 0; + uint32_t old_ = 0; + uint32_t tmp_ = RREG32(reg_addr); + uint32_t loop = adev->usec_timeout; + + while ((tmp_ & (mask)) != (expected_value)) { + if (old_ != tmp_) { + loop = adev->usec_timeout; + old_ = tmp_; + } else + udelay(1); + tmp_ = RREG32(reg_addr); + loop--; + if (!loop) { + dev_warn( + adev->dev, + "Register(%d) [%s] failed to reach value 0x%08x != 0x%08xn", + inst, reg_name, (uint32_t)expected_value, + (uint32_t)(tmp_ & (mask))); + ret = -ETIMEDOUT; + break; + } + } + return ret; +} + +ssize_t amdgpu_get_soft_full_reset_mask(struct amdgpu_ring *ring) +{ + ssize_t size = 0; + + if (!ring || !ring->adev) + return size; + + if (amdgpu_device_should_recover_gpu(ring->adev)) + size |= AMDGPU_RESET_TYPE_FULL; + + if (unlikely(!ring->adev->debug_disable_soft_recovery) && + !amdgpu_sriov_vf(ring->adev) && ring->funcs->soft_recovery) + size |= AMDGPU_RESET_TYPE_SOFT_RESET; + + return size; +} + +ssize_t amdgpu_show_reset_mask(char *buf, uint32_t supported_reset) +{ + ssize_t size = 0; + + if (supported_reset == 0) { + size += sysfs_emit_at(buf, size, "unsupported"); + size += sysfs_emit_at(buf, size, "\n"); + return size; + + } + + if (supported_reset & AMDGPU_RESET_TYPE_SOFT_RESET) + size += sysfs_emit_at(buf, size, "soft "); + + if (supported_reset & AMDGPU_RESET_TYPE_PER_QUEUE) + size += sysfs_emit_at(buf, size, "queue "); + + if (supported_reset & AMDGPU_RESET_TYPE_PER_PIPE) + size += sysfs_emit_at(buf, size, "pipe "); + + if (supported_reset & AMDGPU_RESET_TYPE_FULL) + size += sysfs_emit_at(buf, size, "full "); + + size += sysfs_emit_at(buf, size, "\n"); + return size; +} + +void amdgpu_device_set_uid(struct amdgpu_uid *uid_info, + enum amdgpu_uid_type type, uint8_t inst, + uint64_t uid) +{ + if (!uid_info) + return; + + if (type >= AMDGPU_UID_TYPE_MAX) { + dev_err_once(uid_info->adev->dev, "Invalid UID type %d\n", + type); + return; + } + + if (inst >= AMDGPU_UID_INST_MAX) { + dev_err_once(uid_info->adev->dev, "Invalid UID instance %d\n", + inst); + return; + } + + if (uid_info->uid[type][inst] != 0) { + dev_warn_once( + uid_info->adev->dev, + "Overwriting existing UID %llu for type %d instance %d\n", + uid_info->uid[type][inst], type, inst); + } + + uid_info->uid[type][inst] = uid; +} + +u64 amdgpu_device_get_uid(struct amdgpu_uid *uid_info, + enum amdgpu_uid_type type, uint8_t inst) +{ + if (!uid_info) + return 0; + + if (type >= AMDGPU_UID_TYPE_MAX) { + dev_err_once(uid_info->adev->dev, "Invalid UID type %d\n", + type); + return 0; + } + + if (inst >= AMDGPU_UID_INST_MAX) { + dev_err_once(uid_info->adev->dev, "Invalid UID instance %d\n", + inst); + return 0; + } + + return uid_info->uid[type][inst]; +} |