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| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-07-16 13:50:39 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-07-16 13:51:05 -0400 |
| commit | 25a3e8ac07a87a4259cc727c585ae4a959fd54a2 (patch) | |
| tree | f1d04a5937d2a19154acceab9e7f38f51911420e /drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | |
| parent | 9075096b09e5905ccaa7f7be548593a6530e097f (diff) | |
| download | linux-25a3e8ac07a87a4259cc727c585ae4a959fd54a2.tar.bz2 | |
drm/amdgpu: Switch to VRAM buffer for USBC PD FW.
System memory-based implementation for updating the
USBCPD is deprecated for so switching
to LFB based implementation for all the ASICs.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alexander Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 33 |
1 files changed, 13 insertions, 20 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index 335abc888475..77e794e027a8 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -24,7 +24,6 @@ */ #include <linux/firmware.h> -#include <linux/dma-mapping.h> #include <drm/drm_drv.h> #include "amdgpu.h" @@ -3273,11 +3272,12 @@ static ssize_t psp_usbc_pd_fw_sysfs_write(struct device *dev, { struct drm_device *ddev = dev_get_drvdata(dev); struct amdgpu_device *adev = drm_to_adev(ddev); - void *cpu_addr; - dma_addr_t dma_addr; int ret, idx; char fw_name[100]; const struct firmware *usbc_pd_fw; + struct amdgpu_bo *fw_buf_bo = NULL; + uint64_t fw_pri_mc_addr; + void *fw_pri_cpu_addr; if (!adev->ip_blocks[AMD_IP_BLOCK_TYPE_PSP].status.late_initialized) { DRM_INFO("PSP block is not ready yet."); @@ -3292,31 +3292,24 @@ static ssize_t psp_usbc_pd_fw_sysfs_write(struct device *dev, if (ret) goto fail; - /* We need contiguous physical mem to place the FW for psp to access */ - cpu_addr = dma_alloc_coherent(adev->dev, usbc_pd_fw->size, &dma_addr, GFP_KERNEL); - - ret = dma_mapping_error(adev->dev, dma_addr); + /* LFB address which is aligned to 1MB boundary per PSP request */ + ret = amdgpu_bo_create_kernel(adev, usbc_pd_fw->size, 0x100000, + AMDGPU_GEM_DOMAIN_VRAM, + &fw_buf_bo, + &fw_pri_mc_addr, + &fw_pri_cpu_addr); if (ret) goto rel_buf; - memcpy_toio(cpu_addr, usbc_pd_fw->data, usbc_pd_fw->size); - - /* - * x86 specific workaround. - * Without it the buffer is invisible in PSP. - * - * TODO Remove once PSP starts snooping CPU cache - */ -#ifdef CONFIG_X86 - clflush_cache_range(cpu_addr, (usbc_pd_fw->size & ~(L1_CACHE_BYTES - 1))); -#endif + memcpy_toio(fw_pri_cpu_addr, usbc_pd_fw->data, usbc_pd_fw->size); mutex_lock(&adev->psp.mutex); - ret = psp_load_usbc_pd_fw(&adev->psp, dma_addr); + ret = psp_load_usbc_pd_fw(&adev->psp, fw_pri_mc_addr); mutex_unlock(&adev->psp.mutex); + amdgpu_bo_free_kernel(&fw_buf_bo, &fw_pri_mc_addr, &fw_pri_cpu_addr); + rel_buf: - dma_free_coherent(adev->dev, usbc_pd_fw->size, cpu_addr, dma_addr); release_firmware(usbc_pd_fw); fail: if (ret) { |