diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c | 98 |
1 files changed, 55 insertions, 43 deletions
diff --git a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c index f77367329760..1bddecfb723a 100644 --- a/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c +++ b/drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c @@ -1,11 +1,10 @@ // SPDX-License-Identifier: MIT /* * Copyright © 2021-2023 Intel Corporation - * Copyright (C) 2021-2002 Red Hat + * Copyright (C) 2021-2022 Red Hat */ #include <drm/drm_managed.h> -#include <drm/drm_mm.h> #include <drm/ttm/ttm_device.h> #include <drm/ttm/ttm_placement.h> @@ -13,16 +12,19 @@ #include <generated/xe_wa_oob.h> +#include "regs/xe_bars.h" #include "regs/xe_gt_regs.h" #include "regs/xe_regs.h" #include "xe_bo.h" #include "xe_device.h" #include "xe_gt.h" +#include "xe_gt_printk.h" #include "xe_mmio.h" #include "xe_res_cursor.h" #include "xe_sriov.h" #include "xe_ttm_stolen_mgr.h" #include "xe_ttm_vram_mgr.h" +#include "xe_vram.h" #include "xe_wa.h" struct xe_ttm_stolen_mgr { @@ -56,28 +58,60 @@ bool xe_ttm_stolen_cpu_access_needs_ggtt(struct xe_device *xe) return GRAPHICS_VERx100(xe) < 1270 && !IS_DGFX(xe); } -static s64 detect_bar2_dgfx(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr) +static u32 get_wopcm_size(struct xe_device *xe) +{ + u32 wopcm_size; + u64 val; + + val = xe_mmio_read64_2x32(xe_root_tile_mmio(xe), STOLEN_RESERVED); + val = REG_FIELD_GET64(WOPCM_SIZE_MASK, val); + + switch (val) { + case 0x5 ... 0x6: + val--; + fallthrough; + case 0x0 ... 0x3: + wopcm_size = (1U << val) * SZ_1M; + break; + default: + WARN(1, "Missing case wopcm_size=%llx\n", val); + wopcm_size = 0; + } + + return wopcm_size; +} + +static u64 detect_bar2_dgfx(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr) { - struct xe_tile *tile = xe_device_get_root_tile(xe); - struct xe_gt *mmio = xe_root_mmio_gt(xe); + struct xe_vram_region *tile_vram = xe_device_get_root_tile(xe)->mem.vram; + resource_size_t tile_io_start = xe_vram_region_io_start(tile_vram); + struct xe_mmio *mmio = xe_root_tile_mmio(xe); struct pci_dev *pdev = to_pci_dev(xe->drm.dev); - u64 stolen_size; + u64 stolen_size, wopcm_size; u64 tile_offset; u64 tile_size; - tile_offset = tile->mem.vram.io_start - xe->mem.vram.io_start; - tile_size = tile->mem.vram.actual_physical_size; + tile_offset = tile_io_start - xe_vram_region_io_start(xe->mem.vram); + tile_size = xe_vram_region_actual_physical_size(tile_vram); /* Use DSM base address instead for stolen memory */ mgr->stolen_base = (xe_mmio_read64_2x32(mmio, DSMBASE) & BDSM_MASK) - tile_offset; if (drm_WARN_ON(&xe->drm, tile_size < mgr->stolen_base)) return 0; + /* Carve out the top of DSM as it contains the reserved WOPCM region */ + wopcm_size = get_wopcm_size(xe); + if (drm_WARN_ON(&xe->drm, !wopcm_size)) + return 0; + stolen_size = tile_size - mgr->stolen_base; + xe_assert(xe, stolen_size >= wopcm_size); + stolen_size -= wopcm_size; + /* Verify usage fits in the actual resource available */ if (mgr->stolen_base + stolen_size <= pci_resource_len(pdev, LMEM_BAR)) - mgr->io_base = tile->mem.vram.io_start + mgr->stolen_base; + mgr->io_base = tile_io_start + mgr->stolen_base; /* * There may be few KB of platform dependent reserved memory at the end @@ -88,29 +122,6 @@ static s64 detect_bar2_dgfx(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr) return ALIGN_DOWN(stolen_size, SZ_1M); } -static u32 get_wopcm_size(struct xe_device *xe) -{ - u32 wopcm_size; - u64 val; - - val = xe_mmio_read64_2x32(xe_root_mmio_gt(xe), STOLEN_RESERVED); - val = REG_FIELD_GET64(WOPCM_SIZE_MASK, val); - - switch (val) { - case 0x5 ... 0x6: - val--; - fallthrough; - case 0x0 ... 0x3: - wopcm_size = (1U << val) * SZ_1M; - break; - default: - WARN(1, "Missing case wopcm_size=%llx\n", val); - wopcm_size = 0; - } - - return wopcm_size; -} - static u32 detect_bar2_integrated(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr) { struct pci_dev *pdev = to_pci_dev(xe->drm.dev); @@ -118,7 +129,7 @@ static u32 detect_bar2_integrated(struct xe_device *xe, struct xe_ttm_stolen_mgr u32 stolen_size, wopcm_size; u32 ggc, gms; - ggc = xe_mmio_read32(xe_root_mmio_gt(xe), GGC); + ggc = xe_mmio_read32(xe_root_tile_mmio(xe), GGC); /* * Check GGMS: it should be fixed 0x3 (8MB), which corresponds to the @@ -157,8 +168,8 @@ static u32 detect_bar2_integrated(struct xe_device *xe, struct xe_ttm_stolen_mgr stolen_size -= wopcm_size; - if (media_gt && XE_WA(media_gt, 14019821291)) { - u64 gscpsmi_base = xe_mmio_read64_2x32(media_gt, GSCPSMI_BASE) + if (media_gt && XE_GT_WA(media_gt, 14019821291)) { + u64 gscpsmi_base = xe_mmio_read64_2x32(&media_gt->mmio, GSCPSMI_BASE) & ~GENMASK_ULL(5, 0); /* @@ -200,17 +211,16 @@ static u64 detect_stolen(struct xe_device *xe, struct xe_ttm_stolen_mgr *mgr) #endif } -void xe_ttm_stolen_mgr_init(struct xe_device *xe) +int xe_ttm_stolen_mgr_init(struct xe_device *xe) { - struct xe_ttm_stolen_mgr *mgr = drmm_kzalloc(&xe->drm, sizeof(*mgr), GFP_KERNEL); struct pci_dev *pdev = to_pci_dev(xe->drm.dev); + struct xe_ttm_stolen_mgr *mgr; u64 stolen_size, io_size; int err; - if (!mgr) { - drm_dbg_kms(&xe->drm, "Stolen mgr init failed\n"); - return; - } + mgr = drmm_kzalloc(&xe->drm, sizeof(*mgr), GFP_KERNEL); + if (!mgr) + return -ENOMEM; if (IS_SRIOV_VF(xe)) stolen_size = 0; @@ -223,7 +233,7 @@ void xe_ttm_stolen_mgr_init(struct xe_device *xe) if (!stolen_size) { drm_dbg_kms(&xe->drm, "No stolen memory support\n"); - return; + return 0; } /* @@ -239,7 +249,7 @@ void xe_ttm_stolen_mgr_init(struct xe_device *xe) io_size, PAGE_SIZE); if (err) { drm_dbg_kms(&xe->drm, "Stolen mgr init failed: %i\n", err); - return; + return err; } drm_dbg_kms(&xe->drm, "Initialized stolen memory support with %llu bytes\n", @@ -247,6 +257,8 @@ void xe_ttm_stolen_mgr_init(struct xe_device *xe) if (io_size) mgr->mapping = devm_ioremap_wc(&pdev->dev, mgr->io_base, io_size); + + return 0; } u64 xe_ttm_stolen_io_offset(struct xe_bo *bo, u32 offset) |