diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gt.c | 197 |
1 files changed, 194 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 2161bf01ef8b..62d40c986642 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -13,6 +13,7 @@ #include "intel_gt_clock_utils.h" #include "intel_gt_pm.h" #include "intel_gt_requests.h" +#include "intel_migrate.h" #include "intel_mocs.h" #include "intel_rc6.h" #include "intel_renderstate.h" @@ -40,8 +41,8 @@ void intel_gt_init_early(struct intel_gt *gt, struct drm_i915_private *i915) intel_gt_init_timelines(gt); intel_gt_pm_init_early(gt); - intel_rps_init_early(>->rps); intel_uc_init_early(>->uc); + intel_rps_init_early(>->rps); } int intel_gt_probe_lmem(struct intel_gt *gt) @@ -83,13 +84,73 @@ void intel_gt_init_hw_early(struct intel_gt *gt, struct i915_ggtt *ggtt) gt->ggtt = ggtt; } +static const struct intel_mmio_range icl_l3bank_steering_table[] = { + { 0x00B100, 0x00B3FF }, + {}, +}; + +static const struct intel_mmio_range xehpsdv_mslice_steering_table[] = { + { 0x004000, 0x004AFF }, + { 0x00C800, 0x00CFFF }, + { 0x00DD00, 0x00DDFF }, + { 0x00E900, 0x00FFFF }, /* 0xEA00 - OxEFFF is unused */ + {}, +}; + +static const struct intel_mmio_range xehpsdv_lncf_steering_table[] = { + { 0x00B000, 0x00B0FF }, + { 0x00D800, 0x00D8FF }, + {}, +}; + +static const struct intel_mmio_range dg2_lncf_steering_table[] = { + { 0x00B000, 0x00B0FF }, + { 0x00D880, 0x00D8FF }, + {}, +}; + +static u16 slicemask(struct intel_gt *gt, int count) +{ + u64 dss_mask = intel_sseu_get_subslices(>->info.sseu, 0); + + return intel_slicemask_from_dssmask(dss_mask, count); +} + int intel_gt_init_mmio(struct intel_gt *gt) { + struct drm_i915_private *i915 = gt->i915; + intel_gt_init_clock_frequency(gt); intel_uc_init_mmio(>->uc); intel_sseu_info_init(gt); + /* + * An mslice is unavailable only if both the meml3 for the slice is + * disabled *and* all of the DSS in the slice (quadrant) are disabled. + */ + if (HAS_MSLICES(i915)) + gt->info.mslice_mask = + slicemask(gt, GEN_DSS_PER_MSLICE) | + (intel_uncore_read(gt->uncore, GEN10_MIRROR_FUSE3) & + GEN12_MEML3_EN_MASK); + + if (IS_DG2(i915)) { + gt->steering_table[MSLICE] = xehpsdv_mslice_steering_table; + gt->steering_table[LNCF] = dg2_lncf_steering_table; + } else if (IS_XEHPSDV(i915)) { + gt->steering_table[MSLICE] = xehpsdv_mslice_steering_table; + gt->steering_table[LNCF] = xehpsdv_lncf_steering_table; + } else if (GRAPHICS_VER(i915) >= 11 && + GRAPHICS_VER_FULL(i915) < IP_VER(12, 50)) { + gt->steering_table[L3BANK] = icl_l3bank_steering_table; + gt->info.l3bank_mask = + ~intel_uncore_read(gt->uncore, GEN10_MIRROR_FUSE3) & + GEN10_L3BANK_MASK; + } else if (HAS_MSLICES(i915)) { + MISSING_CASE(INTEL_INFO(i915)->platform); + } + return intel_engines_init_mmio(gt); } @@ -192,7 +253,7 @@ static void clear_register(struct intel_uncore *uncore, i915_reg_t reg) intel_uncore_rmw(uncore, reg, 0, 0); } -static void gen8_clear_engine_error_register(struct intel_engine_cs *engine) +static void gen6_clear_engine_error_register(struct intel_engine_cs *engine) { GEN6_RING_FAULT_REG_RMW(engine, RING_FAULT_VALID, 0); GEN6_RING_FAULT_REG_POSTING_READ(engine); @@ -238,7 +299,7 @@ intel_gt_clear_error_registers(struct intel_gt *gt, enum intel_engine_id id; for_each_engine_masked(engine, gt, engine_mask, id) - gen8_clear_engine_error_register(engine); + gen6_clear_engine_error_register(engine); } } @@ -572,6 +633,25 @@ static void __intel_gt_disable(struct intel_gt *gt) GEM_BUG_ON(intel_gt_pm_is_awake(gt)); } +int intel_gt_wait_for_idle(struct intel_gt *gt, long timeout) +{ + long remaining_timeout; + + /* If the device is asleep, we have no requests outstanding */ + if (!intel_gt_pm_is_awake(gt)) + return 0; + + while ((timeout = intel_gt_retire_requests_timeout(gt, timeout, + &remaining_timeout)) > 0) { + cond_resched(); + if (signal_pending(current)) + return -EINTR; + } + + return timeout ? timeout : intel_uc_wait_for_idle(>->uc, + remaining_timeout); +} + int intel_gt_init(struct intel_gt *gt) { int err; @@ -622,10 +702,14 @@ int intel_gt_init(struct intel_gt *gt) if (err) goto err_gt; + intel_uc_init_late(>->uc); + err = i915_inject_probe_error(gt->i915, -EIO); if (err) goto err_gt; + intel_migrate_init(>->migrate, gt); + goto out_fw; err_gt: __intel_gt_disable(gt); @@ -649,6 +733,7 @@ void intel_gt_driver_remove(struct intel_gt *gt) { __intel_gt_disable(gt); + intel_migrate_fini(>->migrate); intel_uc_driver_remove(>->uc); intel_engines_release(gt); @@ -697,6 +782,112 @@ void intel_gt_driver_late_release(struct intel_gt *gt) intel_engines_free(gt); } +/** + * intel_gt_reg_needs_read_steering - determine whether a register read + * requires explicit steering + * @gt: GT structure + * @reg: the register to check steering requirements for + * @type: type of multicast steering to check + * + * Determines whether @reg needs explicit steering of a specific type for + * reads. + * + * Returns false if @reg does not belong to a register range of the given + * steering type, or if the default (subslice-based) steering IDs are suitable + * for @type steering too. + */ +static bool intel_gt_reg_needs_read_steering(struct intel_gt *gt, + i915_reg_t reg, + enum intel_steering_type type) +{ + const u32 offset = i915_mmio_reg_offset(reg); + const struct intel_mmio_range *entry; + + if (likely(!intel_gt_needs_read_steering(gt, type))) + return false; + + for (entry = gt->steering_table[type]; entry->end; entry++) { + if (offset >= entry->start && offset <= entry->end) + return true; + } + + return false; +} + +/** + * intel_gt_get_valid_steering - determines valid IDs for a class of MCR steering + * @gt: GT structure + * @type: multicast register type + * @sliceid: Slice ID returned + * @subsliceid: Subslice ID returned + * + * Determines sliceid and subsliceid values that will steer reads + * of a specific multicast register class to a valid value. + */ +static void intel_gt_get_valid_steering(struct intel_gt *gt, + enum intel_steering_type type, + u8 *sliceid, u8 *subsliceid) +{ + switch (type) { + case L3BANK: + GEM_DEBUG_WARN_ON(!gt->info.l3bank_mask); /* should be impossible! */ + + *sliceid = 0; /* unused */ + *subsliceid = __ffs(gt->info.l3bank_mask); + break; + case MSLICE: + GEM_DEBUG_WARN_ON(!gt->info.mslice_mask); /* should be impossible! */ + + *sliceid = __ffs(gt->info.mslice_mask); + *subsliceid = 0; /* unused */ + break; + case LNCF: + GEM_DEBUG_WARN_ON(!gt->info.mslice_mask); /* should be impossible! */ + + /* + * An LNCF is always present if its mslice is present, so we + * can safely just steer to LNCF 0 in all cases. + */ + *sliceid = __ffs(gt->info.mslice_mask) << 1; + *subsliceid = 0; /* unused */ + break; + default: + MISSING_CASE(type); + *sliceid = 0; + *subsliceid = 0; + } +} + +/** + * intel_gt_read_register_fw - reads a GT register with support for multicast + * @gt: GT structure + * @reg: register to read + * + * This function will read a GT register. If the register is a multicast + * register, the read will be steered to a valid instance (i.e., one that + * isn't fused off or powered down by power gating). + * + * Returns the value from a valid instance of @reg. + */ +u32 intel_gt_read_register_fw(struct intel_gt *gt, i915_reg_t reg) +{ + int type; + u8 sliceid, subsliceid; + + for (type = 0; type < NUM_STEERING_TYPES; type++) { + if (intel_gt_reg_needs_read_steering(gt, reg, type)) { + intel_gt_get_valid_steering(gt, type, &sliceid, + &subsliceid); + return intel_uncore_read_with_mcr_steering_fw(gt->uncore, + reg, + sliceid, + subsliceid); + } + } + + return intel_uncore_read_fw(gt->uncore, reg); +} + void intel_gt_info_print(const struct intel_gt_info *info, struct drm_printer *p) { |