From f7e9e9feb09f833d03f5fc3f378083b4664bd374 Mon Sep 17 00:00:00 2001 From: Nils Wallménius Date: Wed, 14 Dec 2016 21:52:45 +0100 Subject: drm/amdgpu: Remove checking for atombios MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is a left over from radeon, amdgpu doesn't support any non-atombios parts and amdgpu_device_init would bail if the check for atombios failed anyway. Reviewed-by: Edward O'Callaghan Signed-off-by: Nils Wallménius Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c index 8ec1967a850b..f573a953b4c3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c @@ -394,15 +394,15 @@ bool amdgpu_get_bios(struct amdgpu_device *adev) if (!bios_header_start) { goto free_bios; } + + /* Must be an ATOMBIOS */ tmp = bios_header_start + 4; - if (!memcmp(adev->bios + tmp, "ATOM", 4) || - !memcmp(adev->bios + tmp, "MOTA", 4)) { - adev->is_atom_bios = true; - } else { - adev->is_atom_bios = false; + if (memcmp(adev->bios + tmp, "ATOM", 4) && + memcmp(adev->bios + tmp, "MOTA", 4)) { + goto free_bios; } - DRM_DEBUG("%sBIOS detected\n", adev->is_atom_bios ? "ATOM" : "COM"); + DRM_DEBUG("ATOMBIOS detected\n"); return true; free_bios: kfree(adev->bios); -- cgit From 919db4c199127781cef99b7ea0b74e3a9572ea32 Mon Sep 17 00:00:00 2001 From: Ken Xue Date: Wed, 21 Dec 2016 18:35:28 +0800 Subject: drm/amdgpu: Refine the way to get atom bios There are several ways to check out a ATOMBIOS. In previous codes, try a new way to fetch out vbios/rom, until current vbios/rom is started with 0x55aa, then check if this vbios is ATOMBIOS. Now, try a new way to fetch out vbios until all flags of ATOMBIOS are verified. Signed-off-by: Ken Xue Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 179 ++++++++++++++++++------------- 1 file changed, 105 insertions(+), 74 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c index f573a953b4c3..2602ea12971e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c @@ -42,6 +42,51 @@ #define AMD_IS_VALID_VBIOS(p) ((p)[0] == 0x55 && (p)[1] == 0xAA) #define AMD_VBIOS_LENGTH(p) ((p)[2] << 9) +/* Check if current bios is an ATOM BIOS. + * Return true if it is ATOM BIOS. Otherwise, return false. + */ +static bool check_atom_bios(uint8_t *bios, size_t size) +{ + uint16_t tmp, bios_header_start; + + if (!bios || size < 0x49) { + DRM_INFO("vbios mem is null or mem size is wrong\n"); + return false; + } + + if (!AMD_IS_VALID_VBIOS(bios)) { + DRM_INFO("BIOS signature incorrect %x %x\n", bios[0], bios[1]); + return false; + } + + tmp = bios[0x18] | (bios[0x19] << 8); + if (bios[tmp + 0x14] != 0x0) { + DRM_INFO("Not an x86 BIOS ROM\n"); + return false; + } + + bios_header_start = bios[0x48] | (bios[0x49] << 8); + if (!bios_header_start) { + DRM_INFO("Can't locate bios header\n"); + return false; + } + + tmp = bios_header_start + 4; + if (size < tmp) { + DRM_INFO("BIOS header is broken\n"); + return false; + } + + if (!memcmp(bios + tmp, "ATOM", 4) || + !memcmp(bios + tmp, "MOTA", 4)) { + DRM_DEBUG("ATOMBIOS detected\n"); + return true; + } + + return false; +} + + /* If you boot an IGP board with a discrete card as the primary, * the IGP rom is not accessible via the rom bar as the IGP rom is * part of the system bios. On boot, the system bios puts a @@ -65,10 +110,6 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev) return false; } - if (size == 0 || !AMD_IS_VALID_VBIOS(bios)) { - iounmap(bios); - return false; - } adev->bios = kmalloc(size, GFP_KERNEL); if (!adev->bios) { iounmap(bios); @@ -77,12 +118,18 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev) adev->bios_size = size; memcpy_fromio(adev->bios, bios, size); iounmap(bios); + + if (!check_atom_bios(adev->bios, size)) { + kfree(adev->bios); + return false; + } + return true; } bool amdgpu_read_bios(struct amdgpu_device *adev) { - uint8_t __iomem *bios, val[2]; + uint8_t __iomem *bios; size_t size; adev->bios = NULL; @@ -92,13 +139,6 @@ bool amdgpu_read_bios(struct amdgpu_device *adev) return false; } - val[0] = readb(&bios[0]); - val[1] = readb(&bios[1]); - - if (size == 0 || !AMD_IS_VALID_VBIOS(val)) { - pci_unmap_rom(adev->pdev, bios); - return false; - } adev->bios = kzalloc(size, GFP_KERNEL); if (adev->bios == NULL) { pci_unmap_rom(adev->pdev, bios); @@ -107,6 +147,12 @@ bool amdgpu_read_bios(struct amdgpu_device *adev) adev->bios_size = size; memcpy_fromio(adev->bios, bios, size); pci_unmap_rom(adev->pdev, bios); + + if (!check_atom_bios(adev->bios, size)) { + kfree(adev->bios); + return false; + } + return true; } @@ -140,7 +186,14 @@ static bool amdgpu_read_bios_from_rom(struct amdgpu_device *adev) adev->bios_size = len; /* read complete BIOS */ - return amdgpu_asic_read_bios_from_rom(adev, adev->bios, len); + amdgpu_asic_read_bios_from_rom(adev, adev->bios, len); + + if (!check_atom_bios(adev->bios, len)) { + kfree(adev->bios); + return false; + } + + return true; } static bool amdgpu_read_platform_bios(struct amdgpu_device *adev) @@ -155,13 +208,17 @@ static bool amdgpu_read_platform_bios(struct amdgpu_device *adev) return false; } - if (size == 0 || !AMD_IS_VALID_VBIOS(bios)) { + adev->bios = kzalloc(size, GFP_KERNEL); + if (adev->bios == NULL) return false; - } - adev->bios = kmemdup(bios, size, GFP_KERNEL); - if (adev->bios == NULL) { + + memcpy_fromio(adev->bios, bios, size); + + if (!check_atom_bios(adev->bios, size)) { + kfree(adev->bios); return false; } + adev->bios_size = size; return true; @@ -273,7 +330,7 @@ static bool amdgpu_atrm_get_bios(struct amdgpu_device *adev) break; } - if (i == 0 || !AMD_IS_VALID_VBIOS(adev->bios)) { + if (!check_atom_bios(adev->bios, size)) { kfree(adev->bios); return false; } @@ -298,7 +355,6 @@ static bool amdgpu_read_disabled_bios(struct amdgpu_device *adev) #ifdef CONFIG_ACPI static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) { - bool ret = false; struct acpi_table_header *hdr; acpi_size tbl_size; UEFI_ACPI_VFCT *vfct; @@ -310,13 +366,13 @@ static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) tbl_size = hdr->length; if (tbl_size < sizeof(UEFI_ACPI_VFCT)) { DRM_ERROR("ACPI VFCT table present but broken (too short #1)\n"); - goto out_unmap; + return false; } vfct = (UEFI_ACPI_VFCT *)hdr; if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) > tbl_size) { DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n"); - goto out_unmap; + return false; } vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + vfct->VBIOSImageOffset); @@ -331,20 +387,25 @@ static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) vhdr->VendorID != adev->pdev->vendor || vhdr->DeviceID != adev->pdev->device) { DRM_INFO("ACPI VFCT table is not for this card\n"); - goto out_unmap; + return false; } if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) + vhdr->ImageLength > tbl_size) { DRM_ERROR("ACPI VFCT image truncated\n"); - goto out_unmap; + return false; } - adev->bios = kmemdup(&vbios->VbiosContent, vhdr->ImageLength, GFP_KERNEL); + adev->bios = kmemdup(&vbios->VbiosContent, + vhdr->ImageLength, + GFP_KERNEL); + + if (!check_atom_bios(adev->bios, vhdr->ImageLength)) { + kfree(adev->bios); + return false; + } adev->bios_size = vhdr->ImageLength; - ret = !!adev->bios; -out_unmap: - return ret; + return true; } #else static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) @@ -355,57 +416,27 @@ static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) bool amdgpu_get_bios(struct amdgpu_device *adev) { - bool r; - uint16_t tmp, bios_header_start; + if (amdgpu_atrm_get_bios(adev)) + return true; - r = amdgpu_atrm_get_bios(adev); - if (!r) - r = amdgpu_acpi_vfct_bios(adev); - if (!r) - r = igp_read_bios_from_vram(adev); - if (!r) - r = amdgpu_read_bios(adev); - if (!r) { - r = amdgpu_read_bios_from_rom(adev); - } - if (!r) { - r = amdgpu_read_disabled_bios(adev); - } - if (!r) { - r = amdgpu_read_platform_bios(adev); - } - if (!r || adev->bios == NULL) { - DRM_ERROR("Unable to locate a BIOS ROM\n"); - adev->bios = NULL; - return false; - } - if (!AMD_IS_VALID_VBIOS(adev->bios)) { - printk("BIOS signature incorrect %x %x\n", adev->bios[0], adev->bios[1]); - goto free_bios; - } + if (amdgpu_acpi_vfct_bios(adev)) + return true; - tmp = RBIOS16(0x18); - if (RBIOS8(tmp + 0x14) != 0x0) { - DRM_INFO("Not an x86 BIOS ROM, not using.\n"); - goto free_bios; - } + if (igp_read_bios_from_vram(adev)) + return true; - bios_header_start = RBIOS16(0x48); - if (!bios_header_start) { - goto free_bios; - } + if (amdgpu_read_bios(adev)) + return true; - /* Must be an ATOMBIOS */ - tmp = bios_header_start + 4; - if (memcmp(adev->bios + tmp, "ATOM", 4) && - memcmp(adev->bios + tmp, "MOTA", 4)) { - goto free_bios; - } + if (amdgpu_read_bios_from_rom(adev)) + return true; - DRM_DEBUG("ATOMBIOS detected\n"); - return true; -free_bios: - kfree(adev->bios); - adev->bios = NULL; + if (amdgpu_read_disabled_bios(adev)) + return true; + + if (amdgpu_read_platform_bios(adev)) + return true; + + DRM_ERROR("Unable to locate a BIOS ROM\n"); return false; } -- cgit From 17ed9be815821f18eb2a42282fa5416c06da03b0 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 25 Jan 2017 15:35:38 -0500 Subject: drm/amdgpu: handle vfct with multiple vbios images The vfct table can contain multiple vbios images if the platform contains multiple GPUs. Noticed by netkas on phoronix forums. This patch fixes those platforms. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 66 ++++++++++++++++---------------- 1 file changed, 34 insertions(+), 32 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c index 2602ea12971e..d9def01f276e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c @@ -358,8 +358,7 @@ static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) struct acpi_table_header *hdr; acpi_size tbl_size; UEFI_ACPI_VFCT *vfct; - GOP_VBIOS_CONTENT *vbios; - VFCT_IMAGE_HEADER *vhdr; + unsigned offset; if (!ACPI_SUCCESS(acpi_get_table("VFCT", 1, &hdr))) return false; @@ -370,42 +369,45 @@ static bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) } vfct = (UEFI_ACPI_VFCT *)hdr; - if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) > tbl_size) { - DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n"); - return false; - } + offset = vfct->VBIOSImageOffset; - vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + vfct->VBIOSImageOffset); - vhdr = &vbios->VbiosHeader; - DRM_INFO("ACPI VFCT contains a BIOS for %02x:%02x.%d %04x:%04x, size %d\n", - vhdr->PCIBus, vhdr->PCIDevice, vhdr->PCIFunction, - vhdr->VendorID, vhdr->DeviceID, vhdr->ImageLength); - - if (vhdr->PCIBus != adev->pdev->bus->number || - vhdr->PCIDevice != PCI_SLOT(adev->pdev->devfn) || - vhdr->PCIFunction != PCI_FUNC(adev->pdev->devfn) || - vhdr->VendorID != adev->pdev->vendor || - vhdr->DeviceID != adev->pdev->device) { - DRM_INFO("ACPI VFCT table is not for this card\n"); - return false; - } + while (offset < tbl_size) { + GOP_VBIOS_CONTENT *vbios = (GOP_VBIOS_CONTENT *)((char *)hdr + offset); + VFCT_IMAGE_HEADER *vhdr = &vbios->VbiosHeader; - if (vfct->VBIOSImageOffset + sizeof(VFCT_IMAGE_HEADER) + vhdr->ImageLength > tbl_size) { - DRM_ERROR("ACPI VFCT image truncated\n"); - return false; - } + offset += sizeof(VFCT_IMAGE_HEADER); + if (offset > tbl_size) { + DRM_ERROR("ACPI VFCT image header truncated\n"); + return false; + } - adev->bios = kmemdup(&vbios->VbiosContent, - vhdr->ImageLength, - GFP_KERNEL); + offset += vhdr->ImageLength; + if (offset > tbl_size) { + DRM_ERROR("ACPI VFCT image truncated\n"); + return false; + } - if (!check_atom_bios(adev->bios, vhdr->ImageLength)) { - kfree(adev->bios); - return false; + if (vhdr->ImageLength && + vhdr->PCIBus == adev->pdev->bus->number && + vhdr->PCIDevice == PCI_SLOT(adev->pdev->devfn) && + vhdr->PCIFunction == PCI_FUNC(adev->pdev->devfn) && + vhdr->VendorID == adev->pdev->vendor && + vhdr->DeviceID == adev->pdev->device) { + adev->bios = kmemdup(&vbios->VbiosContent, + vhdr->ImageLength, + GFP_KERNEL); + + if (!check_atom_bios(adev->bios, vhdr->ImageLength)) { + kfree(adev->bios); + return false; + } + adev->bios_size = vhdr->ImageLength; + return true; + } } - adev->bios_size = vhdr->ImageLength; - return true; + DRM_ERROR("ACPI VFCT table present but broken (too short #2)\n"); + return false; } #else static inline bool amdgpu_acpi_vfct_bios(struct amdgpu_device *adev) -- cgit From c836fec5ce8eb0d0c08fa0ea5fb71df3290d1601 Mon Sep 17 00:00:00 2001 From: Jim Qu Date: Fri, 10 Feb 2017 15:59:59 +0800 Subject: drm/amd/amdgpu: post card if there is real hw resetting performed Check whether we need to post rather than whether the asic is posted. There are some cases (e.g., GPU reset or resume from hibernate) where we need to force post even if the asic has been posted. Signed-off-by: Jim Qu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 5 ++++- drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 22 +++++++++++++--------- drivers/gpu/drm/amd/amdgpu/cik.c | 1 + drivers/gpu/drm/amd/amdgpu/vi.c | 1 + 5 files changed, 20 insertions(+), 11 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index e9af03113fc3..c1b913541739 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1482,6 +1482,9 @@ struct amdgpu_device { spinlock_t gtt_list_lock; struct list_head gtt_list; + /* record hw reset is performed */ + bool has_hw_reset; + }; static inline struct amdgpu_device *amdgpu_ttm_adev(struct ttm_bo_device *bdev) @@ -1700,7 +1703,7 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring) int amdgpu_gpu_reset(struct amdgpu_device *adev); bool amdgpu_need_backup(struct amdgpu_device *adev); void amdgpu_pci_config_reset(struct amdgpu_device *adev); -bool amdgpu_card_posted(struct amdgpu_device *adev); +bool amdgpu_need_post(struct amdgpu_device *adev); void amdgpu_update_display_priority(struct amdgpu_device *adev); int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, void *data); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c index d9def01f276e..821f7cc2051f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c @@ -100,7 +100,7 @@ static bool igp_read_bios_from_vram(struct amdgpu_device *adev) resource_size_t size = 256 * 1024; /* ??? */ if (!(adev->flags & AMD_IS_APU)) - if (!amdgpu_card_posted(adev)) + if (amdgpu_need_post(adev)) return false; adev->bios = NULL; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 944ba0d3874a..6abb238b25c9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -619,25 +619,29 @@ void amdgpu_gtt_location(struct amdgpu_device *adev, struct amdgpu_mc *mc) * GPU helpers function. */ /** - * amdgpu_card_posted - check if the hw has already been initialized + * amdgpu_need_post - check if the hw need post or not * * @adev: amdgpu_device pointer * - * Check if the asic has been initialized (all asics). - * Used at driver startup. - * Returns true if initialized or false if not. + * 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_card_posted(struct amdgpu_device *adev) +bool amdgpu_need_post(struct amdgpu_device *adev) { uint32_t reg; + if (adev->has_hw_reset) { + adev->has_hw_reset = false; + return true; + } /* then check MEM_SIZE, in case the crtcs are off */ reg = RREG32(mmCONFIG_MEMSIZE); if (reg) - return true; + return false; - return false; + return true; } @@ -665,7 +669,7 @@ static bool amdgpu_vpost_needed(struct amdgpu_device *adev) return true; } } - return !amdgpu_card_posted(adev); + return amdgpu_need_post(adev); } /** @@ -2071,7 +2075,7 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon) amdgpu_atombios_scratch_regs_restore(adev); /* post card */ - if (!amdgpu_card_posted(adev) || !resume) { + if (amdgpu_need_post(adev)) { r = amdgpu_atom_asic_init(adev->mode_info.atom_context); if (r) DRM_ERROR("amdgpu asic init failed\n"); diff --git a/drivers/gpu/drm/amd/amdgpu/cik.c b/drivers/gpu/drm/amd/amdgpu/cik.c index 7c39b538dc0e..c4d4b35e54ec 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik.c +++ b/drivers/gpu/drm/amd/amdgpu/cik.c @@ -1176,6 +1176,7 @@ static int cik_gpu_pci_config_reset(struct amdgpu_device *adev) if (RREG32(mmCONFIG_MEMSIZE) != 0xffffffff) { /* enable BM */ pci_set_master(adev->pdev); + adev->has_hw_reset = true; r = 0; break; } diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index 4922fff08c3c..50bdb24ef8d6 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -721,6 +721,7 @@ static int vi_gpu_pci_config_reset(struct amdgpu_device *adev) if (RREG32(mmCONFIG_MEMSIZE) != 0xffffffff) { /* enable BM */ pci_set_master(adev->pdev); + adev->has_hw_reset = true; return 0; } udelay(1); -- cgit