> -----Original Message----- > From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf > Of Monk Liu > Sent: Wednesday, February 08, 2017 4:27 AM > To: amd-gfx at lists.freedesktop.org > Cc: Liu, Monk > Subject: [PATCH 02/11] drm/amdgpu:impl RREG32 no kiq version > > some registers are PF & VF copy, and we can safely use > mmio method to access them. > > and sometime we are forbid to use kiq to access registers > for example in INTR context. > > we need a MACRO that always disable KIQ for regs accessing > > Change-Id: Ie6dc323dc86829a4a6ceb7073c269b106b534c4a > Signed-off-by: Monk Liu <Monk.Liu at amd.com> Reviewed-by: Alex Deucher <alexander.deucher at amd.com> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu.h | 21 ++++++++++++++------- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 12 ++++++------ > 2 files changed, 20 insertions(+), 13 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h > b/drivers/gpu/drm/amd/amdgpu/amdgpu.h > index 402a895..74bffca8 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h > @@ -1510,9 +1510,9 @@ void amdgpu_device_fini(struct amdgpu_device > *adev); > int amdgpu_gpu_wait_for_idle(struct amdgpu_device *adev); > > uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, > - bool always_indirect); > + uint32_t acc_flags); > void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, > uint32_t v, > - bool always_indirect); > + uint32_t acc_flags); > u32 amdgpu_io_rreg(struct amdgpu_device *adev, u32 reg); > void amdgpu_io_wreg(struct amdgpu_device *adev, u32 reg, u32 v); > > @@ -1523,11 +1523,18 @@ bool amdgpu_device_has_dc_support(struct > amdgpu_device *adev); > /* > * Registers read & write functions. > */ > -#define RREG32(reg) amdgpu_mm_rreg(adev, (reg), false) > -#define RREG32_IDX(reg) amdgpu_mm_rreg(adev, (reg), true) > -#define DREG32(reg) printk(KERN_INFO "REGISTER: " #reg " : 0x%08X\n", > amdgpu_mm_rreg(adev, (reg), false)) > -#define WREG32(reg, v) amdgpu_mm_wreg(adev, (reg), (v), false) > -#define WREG32_IDX(reg, v) amdgpu_mm_wreg(adev, (reg), (v), true) > + > +#define AMDGPU_REGS_IDX (1<<0) > +#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(reg) amdgpu_mm_rreg(adev, (reg), 0) > +#define RREG32_IDX(reg) amdgpu_mm_rreg(adev, (reg), > AMDGPU_REGS_IDX) > +#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 WREG32_IDX(reg, v) amdgpu_mm_wreg(adev, (reg), (v), > AMDGPU_REGS_IDX) > #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)) > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index 3534089..5215fc5 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -91,16 +91,16 @@ bool amdgpu_device_is_px(struct drm_device *dev) > * MMIO register access helper functions. > */ > uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, > - bool always_indirect) > + uint32_t acc_flags) > { > uint32_t ret; > > - if (amdgpu_sriov_runtime(adev)) { > + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && > amdgpu_sriov_runtime(adev)) { > BUG_ON(in_interrupt()); > return amdgpu_virt_kiq_rreg(adev, reg); > } > > - if ((reg * 4) < adev->rmmio_size && !always_indirect) > + if ((reg * 4) < adev->rmmio_size && !(acc_flags & > AMDGPU_REGS_IDX)) > ret = readl(((void __iomem *)adev->rmmio) + (reg * 4)); > else { > unsigned long flags; > @@ -115,16 +115,16 @@ uint32_t amdgpu_mm_rreg(struct amdgpu_device > *adev, uint32_t reg, > } > > void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, > uint32_t v, > - bool always_indirect) > + uint32_t acc_flags) > { > trace_amdgpu_mm_wreg(adev->pdev->device, reg, v); > > - if (amdgpu_sriov_runtime(adev)) { > + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && > amdgpu_sriov_runtime(adev)) { > BUG_ON(in_interrupt()); > return amdgpu_virt_kiq_wreg(adev, reg, v); > } > > - if ((reg * 4) < adev->rmmio_size && !always_indirect) > + if ((reg * 4) < adev->rmmio_size && !(acc_flags & > AMDGPU_REGS_IDX)) > writel(v, ((void __iomem *)adev->rmmio) + (reg * 4)); > else { > unsigned long flags; > -- > 2.7.4 > > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
