From 0b25cbf9c26c4edf2cb12b542faf94d77586c916 Mon Sep 17 00:00:00 2001 From: Hawking Zhang Date: Fri, 28 Sep 2018 14:23:11 +0800 Subject: [PATCH] drm/amdgpu/psp: avoid hard-code fence value pre submission Hard-code submission fence is not a sustainable way as there is more and more run-time psp kernel mode submission from driver to fw Signed-off-by: Hawking Zhang Acked-by: Alex Deucher Reviewed-by: Huang Rui Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 20 ++++++++++++-------- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h | 5 ++++- 2 files changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index 25d2f3e757f1..a18a8c91d52b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -118,22 +118,26 @@ int psp_wait_for(struct psp_context *psp, uint32_t reg_index, static int psp_cmd_submit_buf(struct psp_context *psp, struct amdgpu_firmware_info *ucode, - struct psp_gfx_cmd_resp *cmd, uint64_t fence_mc_addr, - int index) + struct psp_gfx_cmd_resp *cmd, uint64_t fence_mc_addr) { int ret; + int index; memset(psp->cmd_buf_mem, 0, PSP_CMD_BUFFER_SIZE); memcpy(psp->cmd_buf_mem, cmd, sizeof(struct psp_gfx_cmd_resp)); + index = atomic_inc_return(&psp->fence_value); ret = psp_cmd_submit(psp, ucode, psp->cmd_buf_mc_addr, fence_mc_addr, index); - - while (*((unsigned int *)psp->fence_buf) != index) { - msleep(1); + if (ret) { + atomic_dec(&psp->fence_value); + return ret; } + while (*((unsigned int *)psp->fence_buf) != index) + msleep(1); + /* the status field must be 0 after FW is loaded */ if (ucode && psp->cmd_buf_mem->resp.status) { DRM_ERROR("failed loading with status (%d) and ucode id (%d)\n", @@ -191,7 +195,7 @@ static int psp_tmr_load(struct psp_context *psp) PSP_TMR_SIZE, psp->tmr_mc_addr); ret = psp_cmd_submit_buf(psp, NULL, cmd, - psp->fence_buf_mc_addr, 1); + psp->fence_buf_mc_addr); if (ret) goto failed; @@ -258,7 +262,7 @@ static int psp_asd_load(struct psp_context *psp) psp->asd_ucode_size, PSP_ASD_SHARED_MEM_SIZE); ret = psp_cmd_submit_buf(psp, NULL, cmd, - psp->fence_buf_mc_addr, 2); + psp->fence_buf_mc_addr); kfree(cmd); @@ -321,7 +325,7 @@ static int psp_np_fw_load(struct psp_context *psp) return ret; ret = psp_cmd_submit_buf(psp, ucode, psp->cmd, - psp->fence_buf_mc_addr, i + 3); + psp->fence_buf_mc_addr); if (ret) return ret; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h index 8b8720e9c3f0..5bc59bcb3097 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.h @@ -96,7 +96,7 @@ struct psp_context const struct psp_funcs *funcs; - /* fence buffer */ + /* firmware buffer */ struct amdgpu_bo *fw_pri_bo; uint64_t fw_pri_mc_addr; void *fw_pri_buf; @@ -134,6 +134,9 @@ struct psp_context struct amdgpu_bo *cmd_buf_bo; uint64_t cmd_buf_mc_addr; struct psp_gfx_cmd_resp *cmd_buf_mem; + + /* fence value associated with cmd buffer */ + atomic_t fence_value; }; struct amdgpu_psp_funcs {