From: "Huang, Sean Z" <sean.z.hu...@intel.com> Add several PXP-related reg into allowlist to allow ring3 driver to read the those register values.
Signed-off-by: Huang, Sean Z <sean.z.hu...@intel.com> --- drivers/gpu/drm/i915/i915_reg.h | 8 ++++ drivers/gpu/drm/i915/intel_uncore.c | 57 +++++++++++++++++++++-------- 2 files changed, 50 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index faf6b06145fa..5c51c9df8b28 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -12419,4 +12419,12 @@ enum skl_power_gate { #define TGL_ROOT_DEVICE_SKU_ULX 0x2 #define TGL_ROOT_DEVICE_SKU_ULT 0x4 +/* Registers for passlist check */ +#define PXP_REG_01_LOWERBOUND _MMIO(0x32260) +#define PXP_REG_01_UPPERBOUND _MMIO(0x32268) +#define PXP_REG_02_LOWERBOUND _MMIO(0x32670) +#define PXP_REG_02_UPPERBOUND _MMIO(0x32678) +#define PXP_REG_03_LOWERBOUND _MMIO(0x32860) +#define PXP_REG_03_UPPERBOUND _MMIO(0x32c7c) + #endif /* _I915_REG_H_ */ diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index c9ef0025c60e..670856e095c4 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -1990,16 +1990,41 @@ void intel_uncore_fini_mmio(struct intel_uncore *uncore) } static const struct reg_allowlist { - i915_reg_t offset_ldw; + i915_reg_t offset_ldw_lowerbound; + i915_reg_t offset_ldw_upperbound; i915_reg_t offset_udw; u16 gen_mask; u8 size; -} reg_read_allowlist[] = { { - .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE), +} reg_read_allowlist[] = { + { + .offset_ldw_lowerbound = RING_TIMESTAMP(RENDER_RING_BASE), + .offset_ldw_upperbound = RING_TIMESTAMP(RENDER_RING_BASE), .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE), .gen_mask = INTEL_GEN_MASK(4, 12), .size = 8 -} }; + }, + { + .offset_ldw_lowerbound = PXP_REG_01_LOWERBOUND, + .offset_ldw_upperbound = PXP_REG_01_UPPERBOUND, + .offset_udw = {0}, + .gen_mask = INTEL_GEN_MASK(4, 12), + .size = 4 + }, + { + .offset_ldw_lowerbound = PXP_REG_02_LOWERBOUND, + .offset_ldw_upperbound = PXP_REG_02_UPPERBOUND, + .offset_udw = {0}, + .gen_mask = INTEL_GEN_MASK(4, 12), + .size = 4 + }, + { + .offset_ldw_lowerbound = PXP_REG_03_LOWERBOUND, + .offset_ldw_upperbound = PXP_REG_03_UPPERBOUND, + .offset_udw = {0}, + .gen_mask = INTEL_GEN_MASK(4, 12), + .size = 4 + } +}; int i915_reg_read_ioctl(struct drm_device *dev, void *data, struct drm_file *file) @@ -2012,18 +2037,22 @@ int i915_reg_read_ioctl(struct drm_device *dev, unsigned int flags; int remain; int ret = 0; + i915_reg_t offset_ldw; entry = reg_read_allowlist; remain = ARRAY_SIZE(reg_read_allowlist); while (remain) { - u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw); + u32 entry_offset_lb = i915_mmio_reg_offset(entry->offset_ldw_lowerbound); + u32 entry_offset_ub = i915_mmio_reg_offset(entry->offset_ldw_upperbound); GEM_BUG_ON(!is_power_of_2(entry->size)); GEM_BUG_ON(entry->size > 8); - GEM_BUG_ON(entry_offset & (entry->size - 1)); + GEM_BUG_ON(entry_offset_lb & (entry->size - 1)); + GEM_BUG_ON(entry_offset_ub & (entry->size - 1)); if (INTEL_INFO(i915)->gen_mask & entry->gen_mask && - entry_offset == (reg->offset & -entry->size)) + entry_offset_lb <= (reg->offset & -entry->size) && + (reg->offset & -entry->size) <= entry_offset_ub) break; entry++; remain--; @@ -2033,23 +2062,21 @@ int i915_reg_read_ioctl(struct drm_device *dev, return -EINVAL; flags = reg->offset & (entry->size - 1); + offset_ldw = _MMIO(reg->offset - flags); with_intel_runtime_pm(&i915->runtime_pm, wakeref) { if (entry->size == 8 && flags == I915_REG_READ_8B_WA) reg->val = intel_uncore_read64_2x32(uncore, - entry->offset_ldw, + offset_ldw, entry->offset_udw); else if (entry->size == 8 && flags == 0) - reg->val = intel_uncore_read64(uncore, - entry->offset_ldw); + reg->val = intel_uncore_read64(uncore, offset_ldw); else if (entry->size == 4 && flags == 0) - reg->val = intel_uncore_read(uncore, entry->offset_ldw); + reg->val = intel_uncore_read(uncore, offset_ldw); else if (entry->size == 2 && flags == 0) - reg->val = intel_uncore_read16(uncore, - entry->offset_ldw); + reg->val = intel_uncore_read16(uncore, offset_ldw); else if (entry->size == 1 && flags == 0) - reg->val = intel_uncore_read8(uncore, - entry->offset_ldw); + reg->val = intel_uncore_read8(uncore, offset_ldw); else ret = -EINVAL; } -- 2.17.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx