diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uncore.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uncore.h | 40 |
1 files changed, 35 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_uncore.h b/drivers/gpu/drm/i915/intel_uncore.h index b1fa912a65e7..5022bac80b67 100644 --- a/drivers/gpu/drm/i915/intel_uncore.h +++ b/drivers/gpu/drm/i915/intel_uncore.h @@ -33,6 +33,7 @@ #include "i915_reg_defs.h" +struct drm_device; struct drm_i915_private; struct intel_runtime_pm; struct intel_uncore; @@ -135,6 +136,16 @@ struct intel_uncore { spinlock_t lock; /** lock is also taken in irq contexts. */ + /* + * Do we need to apply an additional offset to reach the beginning + * of the basic non-engine GT registers (referred to as "GSI" on + * newer platforms, or "GT block" on older platforms)? If so, we'll + * track that here and apply it transparently to registers in the + * appropriate range to maintain compatibility with our existing + * register definitions and GT code. + */ + u32 gsi_offset; + unsigned int flags; #define UNCORE_HAS_FORCEWAKE BIT(0) #define UNCORE_HAS_FPGA_DBG_UNCLAIMED BIT(1) @@ -210,8 +221,7 @@ intel_uncore_has_fifo(const struct intel_uncore *uncore) return uncore->flags & UNCORE_HAS_FIFO; } -void -intel_uncore_mmio_debug_init_early(struct intel_uncore_mmio_debug *mmio_debug); +void intel_uncore_mmio_debug_init_early(struct drm_i915_private *i915); void intel_uncore_init_early(struct intel_uncore *uncore, struct intel_gt *gt); int intel_uncore_setup_mmio(struct intel_uncore *uncore, phys_addr_t phys_addr); @@ -221,7 +231,7 @@ void intel_uncore_prune_engine_fw_domains(struct intel_uncore *uncore, bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore); bool intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore); void intel_uncore_cleanup_mmio(struct intel_uncore *uncore); -void intel_uncore_fini_mmio(struct intel_uncore *uncore); +void intel_uncore_fini_mmio(struct drm_device *dev, void *data); void intel_uncore_suspend(struct intel_uncore *uncore); void intel_uncore_resume_early(struct intel_uncore *uncore); void intel_uncore_runtime_resume(struct intel_uncore *uncore); @@ -294,19 +304,27 @@ intel_wait_for_register_fw(struct intel_uncore *uncore, 2, timeout_ms, NULL); } +#define IS_GSI_REG(reg) ((reg) < 0x40000) + /* register access functions */ #define __raw_read(x__, s__) \ static inline u##x__ __raw_uncore_read##x__(const struct intel_uncore *uncore, \ i915_reg_t reg) \ { \ - return read##s__(uncore->regs + i915_mmio_reg_offset(reg)); \ + u32 offset = i915_mmio_reg_offset(reg); \ + if (IS_GSI_REG(offset)) \ + offset += uncore->gsi_offset; \ + return read##s__(uncore->regs + offset); \ } #define __raw_write(x__, s__) \ static inline void __raw_uncore_write##x__(const struct intel_uncore *uncore, \ i915_reg_t reg, u##x__ val) \ { \ - write##s__(val, uncore->regs + i915_mmio_reg_offset(reg)); \ + u32 offset = i915_mmio_reg_offset(reg); \ + if (IS_GSI_REG(offset)) \ + offset += uncore->gsi_offset; \ + write##s__(val, uncore->regs + offset); \ } __raw_read(8, b) __raw_read(16, w) @@ -447,6 +465,18 @@ static inline int intel_uncore_write_and_verify(struct intel_uncore *uncore, return (reg_val & mask) != expected_val ? -EINVAL : 0; } +/* + * The raw_reg_{read,write} macros are intended as a micro-optimization for + * interrupt handlers so that the pointer indirection on uncore->regs can + * be computed once (and presumably cached in a register) instead of generating + * extra load instructions for each MMIO access. + * + * Given that these macros are only intended for non-GSI interrupt registers + * (and the goal is to avoid extra instructions generated by the compiler), + * these macros do not account for uncore->gsi_offset. Any caller that needs + * to use these macros on a GSI register is responsible for adding the + * appropriate GSI offset to the 'base' parameter. + */ #define raw_reg_read(base, reg) \ readl(base + i915_mmio_reg_offset(reg)) #define raw_reg_write(base, reg, value) \ |