diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_main.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_main.c | 685 |
1 files changed, 0 insertions, 685 deletions
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c deleted file mode 100644 index 373700c05a00..000000000000 --- a/drivers/gpu/drm/ast/ast_main.c +++ /dev/null @@ -1,685 +0,0 @@ -/* - * Copyright 2012 Red Hat Inc. - * - * 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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. - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - */ -/* - * Authors: Dave Airlie <airlied@redhat.com> - */ -#include <drm/drmP.h> -#include "ast_drv.h" - - -#include <drm/drm_fb_helper.h> -#include <drm/drm_crtc_helper.h> - -void ast_set_index_reg_mask(struct ast_private *ast, - uint32_t base, uint8_t index, - uint8_t mask, uint8_t val) -{ - u8 tmp; - ast_io_write8(ast, base, index); - tmp = (ast_io_read8(ast, base + 1) & mask) | val; - ast_set_index_reg(ast, base, index, tmp); -} - -uint8_t ast_get_index_reg(struct ast_private *ast, - uint32_t base, uint8_t index) -{ - uint8_t ret; - ast_io_write8(ast, base, index); - ret = ast_io_read8(ast, base + 1); - return ret; -} - -uint8_t ast_get_index_reg_mask(struct ast_private *ast, - uint32_t base, uint8_t index, uint8_t mask) -{ - uint8_t ret; - ast_io_write8(ast, base, index); - ret = ast_io_read8(ast, base + 1) & mask; - return ret; -} - -static void ast_detect_config_mode(struct drm_device *dev, u32 *scu_rev) -{ - struct device_node *np = dev->pdev->dev.of_node; - struct ast_private *ast = dev->dev_private; - uint32_t data, jregd0, jregd1; - - /* Defaults */ - ast->config_mode = ast_use_defaults; - *scu_rev = 0xffffffff; - - /* Check if we have device-tree properties */ - if (np && !of_property_read_u32(np, "aspeed,scu-revision-id", - scu_rev)) { - /* We do, disable P2A access */ - ast->config_mode = ast_use_dt; - DRM_INFO("Using device-tree for configuration\n"); - return; - } - - /* Not all families have a P2A bridge */ - if (dev->pdev->device != PCI_CHIP_AST2000) - return; - - /* - * The BMC will set SCU 0x40 D[12] to 1 if the P2 bridge - * is disabled. We force using P2A if VGA only mode bit - * is set D[7] - */ - jregd0 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); - jregd1 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff); - if (!(jregd0 & 0x80) || !(jregd1 & 0x10)) { - /* Double check it's actually working */ - data = ast_read32(ast, 0xf004); - if (data != 0xFFFFFFFF) { - /* P2A works, grab silicon revision */ - ast->config_mode = ast_use_p2a; - - DRM_INFO("Using P2A bridge for configuration\n"); - - /* Read SCU7c (silicon revision register) */ - ast_write32(ast, 0xf004, 0x1e6e0000); - ast_write32(ast, 0xf000, 0x1); - *scu_rev = ast_read32(ast, 0x1207c); - return; - } - } - - /* We have a P2A bridge but it's disabled */ - DRM_INFO("P2A bridge disabled, using default configuration\n"); -} - -static int ast_detect_chip(struct drm_device *dev, bool *need_post) -{ - struct ast_private *ast = dev->dev_private; - uint32_t jreg, scu_rev; - - /* - * If VGA isn't enabled, we need to enable now or subsequent - * access to the scratch registers will fail. We also inform - * our caller that it needs to POST the chip - * (Assumption: VGA not enabled -> need to POST) - */ - if (!ast_is_vga_enabled(dev)) { - ast_enable_vga(dev); - DRM_INFO("VGA not enabled on entry, requesting chip POST\n"); - *need_post = true; - } else - *need_post = false; - - - /* Enable extended register access */ - ast_enable_mmio(dev); - ast_open_key(ast); - - /* Find out whether P2A works or whether to use device-tree */ - ast_detect_config_mode(dev, &scu_rev); - - /* Identify chipset */ - if (dev->pdev->device == PCI_CHIP_AST1180) { - ast->chip = AST1100; - DRM_INFO("AST 1180 detected\n"); - } else { - if (dev->pdev->revision >= 0x40) { - ast->chip = AST2500; - DRM_INFO("AST 2500 detected\n"); - } else if (dev->pdev->revision >= 0x30) { - ast->chip = AST2400; - DRM_INFO("AST 2400 detected\n"); - } else if (dev->pdev->revision >= 0x20) { - ast->chip = AST2300; - DRM_INFO("AST 2300 detected\n"); - } else if (dev->pdev->revision >= 0x10) { - switch (scu_rev & 0x0300) { - case 0x0200: - ast->chip = AST1100; - DRM_INFO("AST 1100 detected\n"); - break; - case 0x0100: - ast->chip = AST2200; - DRM_INFO("AST 2200 detected\n"); - break; - case 0x0000: - ast->chip = AST2150; - DRM_INFO("AST 2150 detected\n"); - break; - default: - ast->chip = AST2100; - DRM_INFO("AST 2100 detected\n"); - break; - } - ast->vga2_clone = false; - } else { - ast->chip = AST2000; - DRM_INFO("AST 2000 detected\n"); - } - } - - /* Check if we support wide screen */ - switch (ast->chip) { - case AST1180: - ast->support_wide_screen = true; - break; - case AST2000: - ast->support_wide_screen = false; - break; - default: - jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); - if (!(jreg & 0x80)) - ast->support_wide_screen = true; - else if (jreg & 0x01) - ast->support_wide_screen = true; - else { - ast->support_wide_screen = false; - if (ast->chip == AST2300 && - (scu_rev & 0x300) == 0x0) /* ast1300 */ - ast->support_wide_screen = true; - if (ast->chip == AST2400 && - (scu_rev & 0x300) == 0x100) /* ast1400 */ - ast->support_wide_screen = true; - if (ast->chip == AST2500 && - scu_rev == 0x100) /* ast2510 */ - ast->support_wide_screen = true; - } - break; - } - - /* Check 3rd Tx option (digital output afaik) */ - ast->tx_chip_type = AST_TX_NONE; - - /* - * VGACRA3 Enhanced Color Mode Register, check if DVO is already - * enabled, in that case, assume we have a SIL164 TMDS transmitter - * - * Don't make that assumption if we the chip wasn't enabled and - * is at power-on reset, otherwise we'll incorrectly "detect" a - * SIL164 when there is none. - */ - if (!*need_post) { - jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xff); - if (jreg & 0x80) - ast->tx_chip_type = AST_TX_SIL164; - } - - if ((ast->chip == AST2300) || (ast->chip == AST2400)) { - /* - * On AST2300 and 2400, look the configuration set by the SoC in - * the SOC scratch register #1 bits 11:8 (interestingly marked - * as "reserved" in the spec) - */ - jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff); - switch (jreg) { - case 0x04: - ast->tx_chip_type = AST_TX_SIL164; - break; - case 0x08: - ast->dp501_fw_addr = kzalloc(32*1024, GFP_KERNEL); - if (ast->dp501_fw_addr) { - /* backup firmware */ - if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) { - kfree(ast->dp501_fw_addr); - ast->dp501_fw_addr = NULL; - } - } - /* fallthrough */ - case 0x0c: - ast->tx_chip_type = AST_TX_DP501; - } - } - - /* Print stuff for diagnostic purposes */ - switch(ast->tx_chip_type) { - case AST_TX_SIL164: - DRM_INFO("Using Sil164 TMDS transmitter\n"); - break; - case AST_TX_DP501: - DRM_INFO("Using DP501 DisplayPort transmitter\n"); - break; - default: - DRM_INFO("Analog VGA only\n"); - } - return 0; -} - -static int ast_get_dram_info(struct drm_device *dev) -{ - struct device_node *np = dev->pdev->dev.of_node; - struct ast_private *ast = dev->dev_private; - uint32_t mcr_cfg, mcr_scu_mpll, mcr_scu_strap; - uint32_t denum, num, div, ref_pll, dsel; - - switch (ast->config_mode) { - case ast_use_dt: - /* - * If some properties are missing, use reasonable - * defaults for AST2400 - */ - if (of_property_read_u32(np, "aspeed,mcr-configuration", - &mcr_cfg)) - mcr_cfg = 0x00000577; - if (of_property_read_u32(np, "aspeed,mcr-scu-mpll", - &mcr_scu_mpll)) - mcr_scu_mpll = 0x000050C0; - if (of_property_read_u32(np, "aspeed,mcr-scu-strap", - &mcr_scu_strap)) - mcr_scu_strap = 0; - break; - case ast_use_p2a: - ast_write32(ast, 0xf004, 0x1e6e0000); - ast_write32(ast, 0xf000, 0x1); - mcr_cfg = ast_read32(ast, 0x10004); - mcr_scu_mpll = ast_read32(ast, 0x10120); - mcr_scu_strap = ast_read32(ast, 0x10170); - break; - case ast_use_defaults: - default: - ast->dram_bus_width = 16; - ast->dram_type = AST_DRAM_1Gx16; - if (ast->chip == AST2500) - ast->mclk = 800; - else - ast->mclk = 396; - return 0; - } - - if (mcr_cfg & 0x40) - ast->dram_bus_width = 16; - else - ast->dram_bus_width = 32; - - if (ast->chip == AST2500) { - switch (mcr_cfg & 0x03) { - case 0: - ast->dram_type = AST_DRAM_1Gx16; - break; - default: - case 1: - ast->dram_type = AST_DRAM_2Gx16; - break; - case 2: - ast->dram_type = AST_DRAM_4Gx16; - break; - case 3: - ast->dram_type = AST_DRAM_8Gx16; - break; - } - } else if (ast->chip == AST2300 || ast->chip == AST2400) { - switch (mcr_cfg & 0x03) { - case 0: - ast->dram_type = AST_DRAM_512Mx16; - break; - default: - case 1: - ast->dram_type = AST_DRAM_1Gx16; - break; - case 2: - ast->dram_type = AST_DRAM_2Gx16; - break; - case 3: - ast->dram_type = AST_DRAM_4Gx16; - break; - } - } else { - switch (mcr_cfg & 0x0c) { - case 0: - case 4: - ast->dram_type = AST_DRAM_512Mx16; - break; - case 8: - if (mcr_cfg & 0x40) - ast->dram_type = AST_DRAM_1Gx16; - else - ast->dram_type = AST_DRAM_512Mx32; - break; - case 0xc: - ast->dram_type = AST_DRAM_1Gx32; - break; - } - } - - if (mcr_scu_strap & 0x2000) - ref_pll = 14318; - else - ref_pll = 12000; - - denum = mcr_scu_mpll & 0x1f; - num = (mcr_scu_mpll & 0x3fe0) >> 5; - dsel = (mcr_scu_mpll & 0xc000) >> 14; - switch (dsel) { - case 3: - div = 0x4; - break; - case 2: - case 1: - div = 0x2; - break; - default: - div = 0x1; - break; - } - ast->mclk = ref_pll * (num + 2) / ((denum + 2) * (div * 1000)); - return 0; -} - -static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb) -{ - struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb); - - drm_gem_object_put_unlocked(ast_fb->obj); - drm_framebuffer_cleanup(fb); - kfree(ast_fb); -} - -static const struct drm_framebuffer_funcs ast_fb_funcs = { - .destroy = ast_user_framebuffer_destroy, -}; - - -int ast_framebuffer_init(struct drm_device *dev, - struct ast_framebuffer *ast_fb, - const struct drm_mode_fb_cmd2 *mode_cmd, - struct drm_gem_object *obj) -{ - int ret; - - drm_helper_mode_fill_fb_struct(dev, &ast_fb->base, mode_cmd); - ast_fb->obj = obj; - ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs); - if (ret) { - DRM_ERROR("framebuffer init failed %d\n", ret); - return ret; - } - return 0; -} - -static struct drm_framebuffer * -ast_user_framebuffer_create(struct drm_device *dev, - struct drm_file *filp, - const struct drm_mode_fb_cmd2 *mode_cmd) -{ - struct drm_gem_object *obj; - struct ast_framebuffer *ast_fb; - int ret; - - obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]); - if (obj == NULL) - return ERR_PTR(-ENOENT); - - ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL); - if (!ast_fb) { - drm_gem_object_put_unlocked(obj); - return ERR_PTR(-ENOMEM); - } - - ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj); - if (ret) { - drm_gem_object_put_unlocked(obj); - kfree(ast_fb); - return ERR_PTR(ret); - } - return &ast_fb->base; -} - -static const struct drm_mode_config_funcs ast_mode_funcs = { - .fb_create = ast_user_framebuffer_create, -}; - -static u32 ast_get_vram_info(struct drm_device *dev) -{ - struct ast_private *ast = dev->dev_private; - u8 jreg; - u32 vram_size; - ast_open_key(ast); - - vram_size = AST_VIDMEM_DEFAULT_SIZE; - jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff); - switch (jreg & 3) { - case 0: vram_size = AST_VIDMEM_SIZE_8M; break; - case 1: vram_size = AST_VIDMEM_SIZE_16M; break; - case 2: vram_size = AST_VIDMEM_SIZE_32M; break; - case 3: vram_size = AST_VIDMEM_SIZE_64M; break; - } - - jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xff); - switch (jreg & 0x03) { - case 1: - vram_size -= 0x100000; - break; - case 2: - vram_size -= 0x200000; - break; - case 3: - vram_size -= 0x400000; - break; - } - - return vram_size; -} - -int ast_driver_load(struct drm_device *dev, unsigned long flags) -{ - struct ast_private *ast; - bool need_post; - int ret = 0; - - ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL); - if (!ast) - return -ENOMEM; - - dev->dev_private = ast; - ast->dev = dev; - - ast->regs = pci_iomap(dev->pdev, 1, 0); - if (!ast->regs) { - ret = -EIO; - goto out_free; - } - - /* - * If we don't have IO space at all, use MMIO now and - * assume the chip has MMIO enabled by default (rev 0x20 - * and higher). - */ - if (!(pci_resource_flags(dev->pdev, 2) & IORESOURCE_IO)) { - DRM_INFO("platform has no IO space, trying MMIO\n"); - ast->ioregs = ast->regs + AST_IO_MM_OFFSET; - } - - /* "map" IO regs if the above hasn't done so already */ - if (!ast->ioregs) { - ast->ioregs = pci_iomap(dev->pdev, 2, 0); - if (!ast->ioregs) { - ret = -EIO; - goto out_free; - } - } - - ast_detect_chip(dev, &need_post); - - if (need_post) - ast_post_gpu(dev); - - if (ast->chip != AST1180) { - ret = ast_get_dram_info(dev); - if (ret) - goto out_free; - ast->vram_size = ast_get_vram_info(dev); - DRM_INFO("dram MCLK=%u Mhz type=%d bus_width=%d size=%08x\n", - ast->mclk, ast->dram_type, - ast->dram_bus_width, ast->vram_size); - } - - ret = ast_mm_init(ast); - if (ret) - goto out_free; - - drm_mode_config_init(dev); - - dev->mode_config.funcs = (void *)&ast_mode_funcs; - dev->mode_config.min_width = 0; - dev->mode_config.min_height = 0; - dev->mode_config.preferred_depth = 24; - dev->mode_config.prefer_shadow = 1; - dev->mode_config.fb_base = pci_resource_start(ast->dev->pdev, 0); - - if (ast->chip == AST2100 || - ast->chip == AST2200 || - ast->chip == AST2300 || - ast->chip == AST2400 || - ast->chip == AST2500 || - ast->chip == AST1180) { - dev->mode_config.max_width = 1920; - dev->mode_config.max_height = 2048; - } else { - dev->mode_config.max_width = 1600; - dev->mode_config.max_height = 1200; - } - - ret = ast_mode_init(dev); - if (ret) - goto out_free; - - ret = ast_fbdev_init(dev); - if (ret) - goto out_free; - - return 0; -out_free: - kfree(ast); - dev->dev_private = NULL; - return ret; -} - -void ast_driver_unload(struct drm_device *dev) -{ - struct ast_private *ast = dev->dev_private; - - ast_release_firmware(dev); - kfree(ast->dp501_fw_addr); - ast_mode_fini(dev); - ast_fbdev_fini(dev); - drm_mode_config_cleanup(dev); - - ast_mm_fini(ast); - if (ast->ioregs != ast->regs + AST_IO_MM_OFFSET) - pci_iounmap(dev->pdev, ast->ioregs); - pci_iounmap(dev->pdev, ast->regs); - kfree(ast); -} - -int ast_gem_create(struct drm_device *dev, - u32 size, bool iskernel, - struct drm_gem_object **obj) -{ - struct ast_bo *astbo; - int ret; - - *obj = NULL; - - size = roundup(size, PAGE_SIZE); - if (size == 0) - return -EINVAL; - - ret = ast_bo_create(dev, size, 0, 0, &astbo); - if (ret) { - if (ret != -ERESTARTSYS) - DRM_ERROR("failed to allocate GEM object\n"); - return ret; - } - *obj = &astbo->gem; - return 0; -} - -int ast_dumb_create(struct drm_file *file, - struct drm_device *dev, - struct drm_mode_create_dumb *args) -{ - int ret; - struct drm_gem_object *gobj; - u32 handle; - - args->pitch = args->width * ((args->bpp + 7) / 8); - args->size = args->pitch * args->height; - - ret = ast_gem_create(dev, args->size, false, - &gobj); - if (ret) - return ret; - - ret = drm_gem_handle_create(file, gobj, &handle); - drm_gem_object_put_unlocked(gobj); - if (ret) - return ret; - - args->handle = handle; - return 0; -} - -static void ast_bo_unref(struct ast_bo **bo) -{ - struct ttm_buffer_object *tbo; - - if ((*bo) == NULL) - return; - - tbo = &((*bo)->bo); - ttm_bo_unref(&tbo); - *bo = NULL; -} - -void ast_gem_free_object(struct drm_gem_object *obj) -{ - struct ast_bo *ast_bo = gem_to_ast_bo(obj); - - ast_bo_unref(&ast_bo); -} - - -static inline u64 ast_bo_mmap_offset(struct ast_bo *bo) -{ - return drm_vma_node_offset_addr(&bo->bo.vma_node); -} -int -ast_dumb_mmap_offset(struct drm_file *file, - struct drm_device *dev, - uint32_t handle, - uint64_t *offset) -{ - struct drm_gem_object *obj; - struct ast_bo *bo; - - obj = drm_gem_object_lookup(file, handle); - if (obj == NULL) - return -ENOENT; - - bo = gem_to_ast_bo(obj); - *offset = ast_bo_mmap_offset(bo); - - drm_gem_object_put_unlocked(obj); - - return 0; - -} - |