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author | Hawking Zhang <Hawking.Zhang@amd.com> | 2020-09-18 20:32:25 +0800 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2020-10-01 10:42:55 -0400 |
commit | f7ee1874b06cfda6295ef236116ef189fdb9bd06 (patch) | |
tree | d3df229f1ade6864b080acb53e08682d97aab693 /drivers/gpu | |
parent | 705a2b5ba0635c2fa3e5b6a830a6b4fe178de699 (diff) | |
download | linux-stable-f7ee1874b06cfda6295ef236116ef189fdb9bd06.tar.gz linux-stable-f7ee1874b06cfda6295ef236116ef189fdb9bd06.tar.bz2 linux-stable-f7ee1874b06cfda6295ef236116ef189fdb9bd06.zip |
drm/amdgpu: support indirect access reg outside of mmio bar (v2)
support both direct and indirect accessor in unified
helper functions.
v2: Retire indirect mmio access via mm_index/data
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 23 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 95 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h | 4 |
4 files changed, 53 insertions, 71 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index bc921c83aad7..87f095dc385c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1020,12 +1020,13 @@ int amdgpu_gpu_wait_for_idle(struct amdgpu_device *adev); void amdgpu_device_vram_access(struct amdgpu_device *adev, loff_t pos, uint32_t *buf, size_t size, bool write); -uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, +uint32_t amdgpu_device_rreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t acc_flags); +void amdgpu_device_wreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t v, uint32_t acc_flags); -void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, - uint32_t acc_flags); -void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, uint32_t reg, uint32_t v, - uint32_t acc_flags); +void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, + uint32_t reg, uint32_t v); void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value); uint8_t amdgpu_mm_rreg8(struct amdgpu_device *adev, uint32_t offset); @@ -1055,8 +1056,8 @@ int emu_soc_asic_init(struct amdgpu_device *adev); */ #define AMDGPU_REGS_NO_KIQ (1<<1) -#define RREG32_NO_KIQ(reg) amdgpu_mm_rreg(adev, (reg), AMDGPU_REGS_NO_KIQ) -#define WREG32_NO_KIQ(reg, v) amdgpu_mm_wreg(adev, (reg), (v), AMDGPU_REGS_NO_KIQ) +#define RREG32_NO_KIQ(reg) amdgpu_device_rreg(adev, (reg), AMDGPU_REGS_NO_KIQ) +#define WREG32_NO_KIQ(reg, v) amdgpu_device_wreg(adev, (reg), (v), AMDGPU_REGS_NO_KIQ) #define RREG32_KIQ(reg) amdgpu_kiq_rreg(adev, (reg)) #define WREG32_KIQ(reg, v) amdgpu_kiq_wreg(adev, (reg), (v)) @@ -1064,9 +1065,9 @@ int emu_soc_asic_init(struct amdgpu_device *adev); #define RREG8(reg) amdgpu_mm_rreg8(adev, (reg)) #define WREG8(reg, v) amdgpu_mm_wreg8(adev, (reg), (v)) -#define RREG32(reg) amdgpu_mm_rreg(adev, (reg), 0) -#define DREG32(reg) printk(KERN_INFO "REGISTER: " #reg " : 0x%08X\n", amdgpu_mm_rreg(adev, (reg), 0)) -#define WREG32(reg, v) amdgpu_mm_wreg(adev, (reg), (v), 0) +#define RREG32(reg) amdgpu_device_rreg(adev, (reg), 0) +#define DREG32(reg) printk(KERN_INFO "REGISTER: " #reg " : 0x%08X\n", amdgpu_device_rreg(adev, (reg), 0)) +#define WREG32(reg, v) amdgpu_device_wreg(adev, (reg), (v), 0) #define REG_SET(FIELD, v) (((v) << FIELD##_SHIFT) & FIELD##_MASK) #define REG_GET(FIELD, v) (((v) << FIELD##_SHIFT) & FIELD##_MASK) #define RREG32_PCIE(reg) adev->pcie_rreg(adev, (reg)) @@ -1112,7 +1113,7 @@ int emu_soc_asic_init(struct amdgpu_device *adev); WREG32_SMC(_Reg, tmp); \ } while (0) -#define DREG32_SYS(sqf, adev, reg) seq_printf((sqf), #reg " : 0x%08X\n", amdgpu_mm_rreg((adev), (reg), false)) +#define DREG32_SYS(sqf, adev, reg) seq_printf((sqf), #reg " : 0x%08X\n", amdgpu_device_rreg((adev), (reg), false)) #define RREG32_IO(reg) amdgpu_io_rreg(adev, (reg)) #define WREG32_IO(reg, v) amdgpu_io_wreg(adev, (reg), (v)) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c index abe0c2729e1c..2d125b8b15ee 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c @@ -267,7 +267,7 @@ static int amdgpu_debugfs_process_reg_op(bool read, struct file *f, } else { r = get_user(value, (uint32_t *)buf); if (!r) - amdgpu_mm_wreg_mmio_rlc(adev, *pos >> 2, value, 0); + amdgpu_mm_wreg_mmio_rlc(adev, *pos >> 2, value); } if (r) { result = r; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 83aeacaf94d5..d0a42c2b6809 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -301,10 +301,10 @@ void amdgpu_device_vram_access(struct amdgpu_device *adev, loff_t pos, } /* - * MMIO register access helper functions. + * register access helper functions. */ /** - * amdgpu_mm_rreg - read a memory mapped IO register + * amdgpu_device_rreg - read a memory mapped IO or indirect register * * @adev: amdgpu_device pointer * @reg: dword aligned register offset @@ -312,33 +312,29 @@ void amdgpu_device_vram_access(struct amdgpu_device *adev, loff_t pos, * * Returns the 32 bit value from the offset specified. */ -uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, - uint32_t acc_flags) +uint32_t amdgpu_device_rreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t acc_flags) { uint32_t ret; if (adev->in_pci_err_recovery) return 0; - if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev) && - down_read_trylock(&adev->reset_sem)) { - ret = amdgpu_kiq_rreg(adev, reg); - up_read(&adev->reset_sem); - return ret; + if ((reg * 4) < adev->rmmio_size) { + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && + amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_sem)) { + ret = amdgpu_kiq_rreg(adev, reg); + up_read(&adev->reset_sem); + } else { + ret = readl(((void __iomem *)adev->rmmio) + (reg * 4)); + } + } else { + ret = adev->pcie_rreg(adev, reg * 4); } - if ((reg * 4) < adev->rmmio_size) - ret = readl(((void __iomem *)adev->rmmio) + (reg * 4)); - else { - unsigned long flags; - - spin_lock_irqsave(&adev->mmio_idx_lock, flags); - writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4)); - ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4)); - spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); - } + trace_amdgpu_device_rreg(adev->pdev->device, reg, ret); - trace_amdgpu_mm_rreg(adev->pdev->device, reg, ret); return ret; } @@ -392,29 +388,8 @@ void amdgpu_mm_wreg8(struct amdgpu_device *adev, uint32_t offset, uint8_t value) BUG(); } -static inline void amdgpu_mm_wreg_mmio(struct amdgpu_device *adev, - uint32_t reg, uint32_t v, - uint32_t acc_flags) -{ - if (adev->in_pci_err_recovery) - return; - - trace_amdgpu_mm_wreg(adev->pdev->device, reg, v); - - if ((reg * 4) < adev->rmmio_size) - writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); - else { - unsigned long flags; - - spin_lock_irqsave(&adev->mmio_idx_lock, flags); - writel((reg * 4), ((void __iomem *)adev->rmmio) + (mmMM_INDEX * 4)); - writel(v, ((void __iomem *)adev->rmmio) + (mmMM_DATA * 4)); - spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); - } -} - /** - * amdgpu_mm_wreg - write to a memory mapped IO register + * amdgpu_device_wreg - write to a memory mapped IO or indirect register * * @adev: amdgpu_device pointer * @reg: dword aligned register offset @@ -423,20 +398,27 @@ static inline void amdgpu_mm_wreg_mmio(struct amdgpu_device *adev, * * Writes the value specified to the offset specified. */ -void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, - uint32_t acc_flags) +void amdgpu_device_wreg(struct amdgpu_device *adev, + uint32_t reg, uint32_t v, + uint32_t acc_flags) { if (adev->in_pci_err_recovery) return; - if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev) && - down_read_trylock(&adev->reset_sem)) { - amdgpu_kiq_wreg(adev, reg, v); - up_read(&adev->reset_sem); - return; + if ((reg * 4) < adev->rmmio_size) { + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && + amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_sem)) { + amdgpu_kiq_wreg(adev, reg, v); + up_read(&adev->reset_sem); + } else { + writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); + } + } else { + adev->pcie_wreg(adev, reg * 4, v); } - amdgpu_mm_wreg_mmio(adev, reg, v, acc_flags); + trace_amdgpu_device_wreg(adev->pdev->device, reg, v); } /* @@ -444,21 +426,20 @@ void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, * * this function is invoked only the debugfs register access * */ -void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, uint32_t reg, uint32_t v, - uint32_t acc_flags) +void amdgpu_mm_wreg_mmio_rlc(struct amdgpu_device *adev, + uint32_t reg, uint32_t v) { if (adev->in_pci_err_recovery) return; if (amdgpu_sriov_fullaccess(adev) && - adev->gfx.rlc.funcs && - adev->gfx.rlc.funcs->is_rlcg_access_range) { - + adev->gfx.rlc.funcs && + adev->gfx.rlc.funcs->is_rlcg_access_range) { if (adev->gfx.rlc.funcs->is_rlcg_access_range(adev, reg)) return adev->gfx.rlc.funcs->rlcg_wreg(adev, reg, v); + } else { + writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); } - - amdgpu_mm_wreg_mmio(adev, reg, v, acc_flags); } /** diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h index 82c2e70a6a71..ee9480d14cbc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_trace.h @@ -35,7 +35,7 @@ #define AMDGPU_JOB_GET_TIMELINE_NAME(job) \ job->base.s_fence->finished.ops->get_timeline_name(&job->base.s_fence->finished) -TRACE_EVENT(amdgpu_mm_rreg, +TRACE_EVENT(amdgpu_device_rreg, TP_PROTO(unsigned did, uint32_t reg, uint32_t value), TP_ARGS(did, reg, value), TP_STRUCT__entry( @@ -54,7 +54,7 @@ TRACE_EVENT(amdgpu_mm_rreg, (unsigned long)__entry->value) ); -TRACE_EVENT(amdgpu_mm_wreg, +TRACE_EVENT(amdgpu_device_wreg, TP_PROTO(unsigned did, uint32_t reg, uint32_t value), TP_ARGS(did, reg, value), TP_STRUCT__entry( |