<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> [Public] <div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> Gotcha,</div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> </div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> Can you add prior to the implementation a small description on how the interface and the different scratch registers work? It may be easier to review with a clear idea of the operation. I know the earlier implementation did not include it, but now that we are modifying it, it would be good to document it.</div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> </div> <div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"> </div> <div id="appendonsend"></div> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr">From: Skvortsov, Victor <Victor.Skvortsov@amd.com> Sent: Wednesday, December 15, 2021 11:18 AM To: Nieto, David M <David.Nieto@amd.com>; amd-gfx@lists.freedesktop.org <amd-gfx@lists.freedesktop.org>; Deng, Emily <Emily.Deng@amd.com>; Liu, Monk <Monk.Liu@amd.com>; Ming, Davis <Davis.Ming@amd.com>; Liu, Shaoyun <Shaoyun.Liu@amd.com>; Zhou, Peng Ju <PengJu.Zhou@amd.com>; Chen, JingWen <JingWen.Chen2@amd.com>; Chen, Horace <Horace.Chen@amd.com> Subject: RE: [PATCH 5/5] drm/amdgpu: Modify indirect register access for gfx9 sriov <div> </div> </div> <style>  </style> <div lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word"> <div class="x_WordSection1"> [AMD Official Use Only] This was a bug in the original definition, but it functionally it makes no difference (in both cases the macros resolve to the same value). <div> <div style="border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0in 0in 0in"> From: Nieto, David M <David.Nieto@amd.com> Sent: Wednesday, December 15, 2021 2:16 PM To: Skvortsov, Victor <Victor.Skvortsov@amd.com>; amd-gfx@lists.freedesktop.org; Deng, Emily <Emily.Deng@amd.com>; Liu, Monk <Monk.Liu@amd.com>; Ming, Davis <Davis.Ming@amd.com>; Liu, Shaoyun <Shaoyun.Liu@amd.com>; Zhou, Peng Ju <PengJu.Zhou@amd.com>; Chen, JingWen <JingWen.Chen2@amd.com>; Chen, Horace <Horace.Chen@amd.com> Subject: Re: [PATCH 5/5] drm/amdgpu: Modify indirect register access for gfx9 sriov </div> </div> [AMD Official Use Only] <div> <div> scratch_reg0 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG0_BASE_IDX] + mmSCRATCH_REG0)*4; scratch_reg1 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG1_BASE_IDX] + mmSCRATCH_REG1)*4; - scratch_reg2 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG1_BASE_IDX] + mmSCRATCH_REG2)*4; - scratch_reg3 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG1_BASE_IDX] + mmSCRATCH_REG3)*4; + scratch_reg2 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG2_BASE_IDX] + mmSCRATCH_REG2)*4; + scratch_reg3 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG3_BASE_IDX] + mmSCRATCH_REG3)*4; spare_int = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmRLC_SPARE_INT_BASE_IDX] + mmRLC_SPARE_INT)*4; </div> <div> </div> <div> the definition of scratch_reg2 and 3 has here.... will this be backwards compatible? Was it a bug in the definition? </div> <div class="x_MsoNormal" align="center" style="text-align:center"> <hr size="1" width="98%" align="center"> </div> <div id="x_divRplyFwdMsg"> From: Skvortsov, Victor <<a href="mailto:Victor.Skvortsov@amd.com">Victor.Skvortsov@amd.com</a>> Sent: Wednesday, December 15, 2021 10:55 AM To: <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a> <<a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a>>; Deng, Emily <<a href="mailto:Emily.Deng@amd.com">Emily.Deng@amd.com</a>>; Liu, Monk <<a href="mailto:Monk.Liu@amd.com">Monk.Liu@amd.com</a>>; Ming, Davis <<a href="mailto:Davis.Ming@amd.com">Davis.Ming@amd.com</a>>; Liu, Shaoyun <<a href="mailto:Shaoyun.Liu@amd.com">Shaoyun.Liu@amd.com</a>>; Zhou, Peng Ju <<a href="mailto:PengJu.Zhou@amd.com">PengJu.Zhou@amd.com</a>>; Chen, JingWen <<a href="mailto:JingWen.Chen2@amd.com">JingWen.Chen2@amd.com</a>>; Chen, Horace <<a href="mailto:Horace.Chen@amd.com">Horace.Chen@amd.com</a>>; Nieto, David M <<a href="mailto:David.Nieto@amd.com">David.Nieto@amd.com</a>> Cc: Skvortsov, Victor <<a href="mailto:Victor.Skvortsov@amd.com">Victor.Skvortsov@amd.com</a>> Subject: [PATCH 5/5] drm/amdgpu: Modify indirect register access for gfx9 sriov <div> </div> </div> <div> <div> Expand RLCG interface for new GC read & write commands. New interface will only be used if the PF enables the flag in pf2vf msg. Signed-off-by: Victor Skvortsov <<a href="mailto:victor.skvortsov@amd.com">victor.skvortsov@amd.com</a>> --- drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 111 +++++++++++++++++++------- 1 file changed, 83 insertions(+), 28 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index d252b06efa43..bce6ab52cae0 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -63,6 +63,13 @@ #define mmGCEA_PROBE_MAP 0x070c #define mmGCEA_PROBE_MAP_BASE_IDX 0 +#define GFX9_RLCG_GC_WRITE_OLD (0x8 << 28) +#define GFX9_RLCG_GC_WRITE (0x0 << 28) +#define GFX9_RLCG_GC_READ (0x1 << 28) +#define GFX9_RLCG_VFGATE_DISABLED 0x4000000 +#define GFX9_RLCG_WRONG_OPERATION_TYPE 0x2000000 +#define GFX9_RLCG_NOT_IN_RANGE 0x1000000 + MODULE_FIRMWARE("amdgpu/vega10_ce.bin"); MODULE_FIRMWARE("amdgpu/vega10_pfp.bin"); MODULE_FIRMWARE("amdgpu/vega10_me.bin"); @@ -739,7 +746,7 @@ static const u32 GFX_RLC_SRM_INDEX_CNTL_DATA_OFFSETS[] = mmRLC_SRM_INDEX_CNTL_DATA_7 - mmRLC_SRM_INDEX_CNTL_DATA_0, }; -static void gfx_v9_0_rlcg_w(struct amdgpu_device *adev, u32 offset, u32 v, u32 flag) +static u32 gfx_v9_0_rlcg_rw(struct amdgpu_device *adev, u32 offset, u32 v, uint32_t flag) { static void *scratch_reg0; static void *scratch_reg1; @@ -748,21 +755,20 @@ static void gfx_v9_0_rlcg_w(struct amdgpu_device *adev, u32 offset, u32 v, u32 f static void *spare_int; static uint32_t grbm_cntl; static uint32_t grbm_idx; + uint32_t i = 0; + uint32_t retries = 50000; + u32 ret = 0; + u32 tmp; scratch_reg0 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG0_BASE_IDX] + mmSCRATCH_REG0)*4; scratch_reg1 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG1_BASE_IDX] + mmSCRATCH_REG1)*4; - scratch_reg2 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG1_BASE_IDX] + mmSCRATCH_REG2)*4; - scratch_reg3 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG1_BASE_IDX] + mmSCRATCH_REG3)*4; + scratch_reg2 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG2_BASE_IDX] + mmSCRATCH_REG2)*4; + scratch_reg3 = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmSCRATCH_REG3_BASE_IDX] + mmSCRATCH_REG3)*4; spare_int = adev->rmmio + (adev->reg_offset[GC_HWIP][0][mmRLC_SPARE_INT_BASE_IDX] + mmRLC_SPARE_INT)*4; grbm_cntl = adev->reg_offset[GC_HWIP][0][mmGRBM_GFX_CNTL_BASE_IDX] + mmGRBM_GFX_CNTL; grbm_idx = adev->reg_offset[GC_HWIP][0][mmGRBM_GFX_INDEX_BASE_IDX] + mmGRBM_GFX_INDEX; - if (amdgpu_sriov_runtime(adev)) { - pr_err("shouldn't call rlcg write register during runtime\n"); - return; - } - if (offset == grbm_cntl || offset == grbm_idx) { if (offset == grbm_cntl) writel(v, scratch_reg2); @@ -771,41 +777,89 @@ static void gfx_v9_0_rlcg_w(struct amdgpu_device *adev, u32 offset, u32 v, u32 f writel(v, ((void __iomem *)adev->rmmio) + (offset * 4)); } else { - uint32_t i = 0; - uint32_t retries = 50000; - writel(v, scratch_reg0); - writel(offset | 0x80000000, scratch_reg1); + writel(offset | flag, scratch_reg1); writel(1, spare_int); - for (i = 0; i < retries; i++) { - u32 tmp; + for (i = 0; i < retries; i++) { tmp = readl(scratch_reg1); - if (!(tmp & 0x80000000)) + if (!(tmp & flag)) break; udelay(10); } - if (i >= retries) - pr_err("timeout: rlcg program reg:0x%05x failed !\n", offset); + + if (i >= retries) { + if (amdgpu_sriov_reg_indirect_gc(adev)) { + if (tmp & GFX9_RLCG_VFGATE_DISABLED) + pr_err("The vfgate is disabled, program reg:0x%05x failed!\n", offset); + else if (tmp & GFX9_RLCG_WRONG_OPERATION_TYPE) + pr_err("Wrong operation type, program reg:0x%05x failed!\n", offset); + else if (tmp & GFX9_RLCG_NOT_IN_RANGE) + pr_err("The register is not in range, program reg:0x%05x failed!\n", offset); + else + pr_err("Unknown error type, program reg:0x%05x failed!\n", offset); + } else + pr_err("timeout: rlcg program reg:0x%05x failed!\n", offset); + } + } + + ret = readl(scratch_reg0); + + return ret; +} + +static bool gfx_v9_0_get_rlcg_flag(struct amdgpu_device *adev, u32 acc_flags, u32 hwip, + int write, u32 *rlcg_flag) +{ + + switch (hwip) { + case GC_HWIP: + if (amdgpu_sriov_reg_indirect_gc(adev)) { + *rlcg_flag = write ? GFX9_RLCG_GC_WRITE : GFX9_RLCG_GC_READ; + + return true; + /* only in new version, AMDGPU_REGS_NO_KIQ and AMDGPU_REGS_RLC enabled simultaneously */ + } else if ((acc_flags & AMDGPU_REGS_RLC) && !(acc_flags & AMDGPU_REGS_NO_KIQ) && write) { + *rlcg_flag = GFX9_RLCG_GC_WRITE_OLD; + return true; + } + + break; + default: + return false; } + return false; +} + +static u32 gfx_v9_0_sriov_rreg(struct amdgpu_device *adev, u32 offset, u32 acc_flags, u32 hwip) +{ + u32 rlcg_flag; + + if (!amdgpu_sriov_runtime(adev) && gfx_v9_0_get_rlcg_flag(adev, acc_flags, hwip, 0, &rlcg_flag)) + return gfx_v9_0_rlcg_rw(adev, offset, 0, rlcg_flag); + + if (acc_flags & AMDGPU_REGS_NO_KIQ) + return RREG32_NO_KIQ(offset); + else + return RREG32(offset); } static void gfx_v9_0_sriov_wreg(struct amdgpu_device *adev, u32 offset, - u32 v, u32 acc_flags, u32 hwip) + u32 value, u32 acc_flags, u32 hwip) { - if ((acc_flags & AMDGPU_REGS_RLC) && - amdgpu_sriov_fullaccess(adev)) { - gfx_v9_0_rlcg_w(adev, offset, v, acc_flags); + u32 rlcg_flag; + if (!amdgpu_sriov_runtime(adev) && gfx_v9_0_get_rlcg_flag(adev, acc_flags, hwip, 1, &rlcg_flag)) { + gfx_v9_0_rlcg_rw(adev, offset, value, rlcg_flag); return; } if (acc_flags & AMDGPU_REGS_NO_KIQ) - WREG32_NO_KIQ(offset, v); + WREG32_NO_KIQ(offset, value); else - WREG32(offset, v); + WREG32(offset, value); } #define VEGA10_GB_ADDR_CONFIG_GOLDEN 0x2a114042 @@ -5134,7 +5188,7 @@ static void gfx_v9_0_update_spm_vmid(struct amdgpu_device *adev, unsigned vmid) if (amdgpu_sriov_is_pp_one_vf(adev)) data = RREG32_NO_KIQ(reg); else - data = RREG32(reg); + data = RREG32_SOC15(GC, 0, mmRLC_SPM_MC_CNTL); data &= ~RLC_SPM_MC_CNTL__RLC_SPM_VMID_MASK; data |= (vmid & RLC_SPM_MC_CNTL__RLC_SPM_VMID_MASK) << RLC_SPM_MC_CNTL__RLC_SPM_VMID__SHIFT; @@ -5190,6 +5244,7 @@ static const struct amdgpu_rlc_funcs gfx_v9_0_rlc_funcs = { .start = gfx_v9_0_rlc_start, .update_spm_vmid = gfx_v9_0_update_spm_vmid, .sriov_wreg = gfx_v9_0_sriov_wreg, + .sriov_rreg = gfx_v9_0_sriov_rreg, .is_rlcg_access_range = gfx_v9_0_is_rlcg_access_range, }; @@ -5795,16 +5850,16 @@ static void gfx_v9_0_set_compute_eop_interrupt_state(struct amdgpu_device *adev, switch (state) { case AMDGPU_IRQ_STATE_DISABLE: - mec_int_cntl = RREG32(mec_int_cntl_reg); + mec_int_cntl = RREG32_SOC15_IP(GC,mec_int_cntl_reg); mec_int_cntl = REG_SET_FIELD(mec_int_cntl, CP_ME1_PIPE0_INT_CNTL, TIME_STAMP_INT_ENABLE, 0); - WREG32(mec_int_cntl_reg, mec_int_cntl); + WREG32_SOC15_IP(GC, mec_int_cntl_reg, mec_int_cntl); break; case AMDGPU_IRQ_STATE_ENABLE: - mec_int_cntl = RREG32(mec_int_cntl_reg); + mec_int_cntl = RREG32_SOC15_IP(GC, mec_int_cntl_reg); mec_int_cntl = REG_SET_FIELD(mec_int_cntl, CP_ME1_PIPE0_INT_CNTL, TIME_STAMP_INT_ENABLE, 1); - WREG32(mec_int_cntl_reg, mec_int_cntl); + WREG32_SOC15_IP(GC, mec_int_cntl_reg, mec_int_cntl); break; default: break; -- 2.25.1 </div> </div> </div> </div> </div> </div> </body> </html>