From 244511f386ccb90f3bea889e4d86a289015898f9 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 15 Aug 2019 09:27:03 +0200 Subject: [PATCH] drm/amdgpu: simplify and cleanup setting the dma mask MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Use dma_set_mask_and_coherent to set both masks in one go, and remove the no longer required fallback, as the kernel now always accepts larger than required DMA masks. Fail the driver probe if we can't set the DMA mask, as that means the system can only support a larger mask. Reviewed-by: Christian König Signed-off-by: Christoph Hellwig Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 - drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 21 ++------------------- drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 15 +++------------ drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 20 +++----------------- drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 20 +++----------------- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 20 +++----------------- 6 files changed, 14 insertions(+), 83 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 63df32afe22a..b2c801fb4ab5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -789,7 +789,6 @@ struct amdgpu_device { int usec_timeout; const struct amdgpu_asic_funcs *asic_funcs; bool shutdown; - bool need_dma32; bool need_swiotlb; bool accel_working; struct notifier_block acpi_nb; diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c index f585fc92871b..ee16ec1a01bb 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c @@ -592,7 +592,6 @@ static unsigned gmc_v10_0_get_vbios_fb_size(struct amdgpu_device *adev) static int gmc_v10_0_sw_init(void *handle) { int r; - int dma_bits; struct amdgpu_device *adev = (struct amdgpu_device *)handle; gfxhub_v2_0_init(adev); @@ -642,26 +641,10 @@ static int gmc_v10_0_sw_init(void *handle) else adev->gmc.stolen_size = 9 * 1024 *1024; - /* - * Set DMA mask + need_dma32 flags. - * PCIE - can handle 44-bits. - * IGP - can handle 44-bits - * PCI - dma32 for legacy pci gart, 44 bits on navi10 - */ - adev->need_dma32 = false; - dma_bits = adev->need_dma32 ? 32 : 44; - - r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); + r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44)); if (r) { - adev->need_dma32 = true; - dma_bits = 32; printk(KERN_WARNING "amdgpu: No suitable DMA available.\n"); - } - - r = pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); - if (r) { - pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32)); - printk(KERN_WARNING "amdgpu: No coherent DMA available.\n"); + return r; } r = gmc_v10_0_mc_init(adev); diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c index ca8dbe91cc8b..14073b506afe 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c @@ -839,7 +839,6 @@ static unsigned gmc_v6_0_get_vbios_fb_size(struct amdgpu_device *adev) static int gmc_v6_0_sw_init(void *handle) { int r; - int dma_bits; struct amdgpu_device *adev = (struct amdgpu_device *)handle; if (adev->flags & AMD_IS_APU) { @@ -862,20 +861,12 @@ static int gmc_v6_0_sw_init(void *handle) adev->gmc.mc_mask = 0xffffffffffULL; - adev->need_dma32 = false; - dma_bits = adev->need_dma32 ? 32 : 40; - r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); + r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44)); if (r) { - adev->need_dma32 = true; - dma_bits = 32; dev_warn(adev->dev, "amdgpu: No suitable DMA available.\n"); + return r; } - r = pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); - if (r) { - pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32)); - dev_warn(adev->dev, "amdgpu: No coherent DMA available.\n"); - } - adev->need_swiotlb = drm_need_swiotlb(dma_bits); + adev->need_swiotlb = drm_need_swiotlb(44); r = gmc_v6_0_init_microcode(adev); if (r) { diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c index 57f80065d57a..ca32915fbecb 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c @@ -959,7 +959,6 @@ static unsigned gmc_v7_0_get_vbios_fb_size(struct amdgpu_device *adev) static int gmc_v7_0_sw_init(void *handle) { int r; - int dma_bits; struct amdgpu_device *adev = (struct amdgpu_device *)handle; if (adev->flags & AMD_IS_APU) { @@ -990,25 +989,12 @@ static int gmc_v7_0_sw_init(void *handle) */ adev->gmc.mc_mask = 0xffffffffffULL; /* 40 bit MC */ - /* set DMA mask + need_dma32 flags. - * PCIE - can handle 40-bits. - * IGP - can handle 40-bits - * PCI - dma32 for legacy pci gart, 40 bits on newer asics - */ - adev->need_dma32 = false; - dma_bits = adev->need_dma32 ? 32 : 40; - r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); + r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(40)); if (r) { - adev->need_dma32 = true; - dma_bits = 32; pr_warn("amdgpu: No suitable DMA available\n"); + return r; } - r = pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); - if (r) { - pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32)); - pr_warn("amdgpu: No coherent DMA available\n"); - } - adev->need_swiotlb = drm_need_swiotlb(dma_bits); + adev->need_swiotlb = drm_need_swiotlb(40); r = gmc_v7_0_init_microcode(adev); if (r) { diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index 9238280d1ff7..909a8764703e 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -1079,7 +1079,6 @@ static unsigned gmc_v8_0_get_vbios_fb_size(struct amdgpu_device *adev) static int gmc_v8_0_sw_init(void *handle) { int r; - int dma_bits; struct amdgpu_device *adev = (struct amdgpu_device *)handle; if (adev->flags & AMD_IS_APU) { @@ -1116,25 +1115,12 @@ static int gmc_v8_0_sw_init(void *handle) */ adev->gmc.mc_mask = 0xffffffffffULL; /* 40 bit MC */ - /* set DMA mask + need_dma32 flags. - * PCIE - can handle 40-bits. - * IGP - can handle 40-bits - * PCI - dma32 for legacy pci gart, 40 bits on newer asics - */ - adev->need_dma32 = false; - dma_bits = adev->need_dma32 ? 32 : 40; - r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); + r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(40)); if (r) { - adev->need_dma32 = true; - dma_bits = 32; pr_warn("amdgpu: No suitable DMA available\n"); + return r; } - r = pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); - if (r) { - pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32)); - pr_warn("amdgpu: No coherent DMA available\n"); - } - adev->need_swiotlb = drm_need_swiotlb(dma_bits); + adev->need_swiotlb = drm_need_swiotlb(40); r = gmc_v8_0_init_microcode(adev); if (r) { diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 040e4a68e0be..ba4f939f657f 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -1090,7 +1090,6 @@ static unsigned gmc_v9_0_get_vbios_fb_size(struct amdgpu_device *adev) static int gmc_v9_0_sw_init(void *handle) { int r; - int dma_bits; struct amdgpu_device *adev = (struct amdgpu_device *)handle; gfxhub_v1_0_init(adev); @@ -1174,25 +1173,12 @@ static int gmc_v9_0_sw_init(void *handle) */ adev->gmc.mc_mask = 0xffffffffffffULL; /* 48 bit MC */ - /* set DMA mask + need_dma32 flags. - * PCIE - can handle 44-bits. - * IGP - can handle 44-bits - * PCI - dma32 for legacy pci gart, 44 bits on vega10 - */ - adev->need_dma32 = false; - dma_bits = adev->need_dma32 ? 32 : 44; - r = pci_set_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); + r = dma_set_mask_and_coherent(adev->dev, DMA_BIT_MASK(44)); if (r) { - adev->need_dma32 = true; - dma_bits = 32; printk(KERN_WARNING "amdgpu: No suitable DMA available.\n"); + return r; } - r = pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(dma_bits)); - if (r) { - pci_set_consistent_dma_mask(adev->pdev, DMA_BIT_MASK(32)); - printk(KERN_WARNING "amdgpu: No coherent DMA available.\n"); - } - adev->need_swiotlb = drm_need_swiotlb(dma_bits); + adev->need_swiotlb = drm_need_swiotlb(44); if (adev->gmc.xgmi.supported) { r = gfxhub_v1_1_get_xgmi_info(adev); -- 2.30.2