[Intel-gfx] [PATCH] drm/i915: Engine relative MMIO
John.C.Harrison at Intel.com
John.C.Harrison at Intel.com
Tue Mar 19 23:22:28 UTC 2019
From: John Harrison <John.C.Harrison at Intel.com>
With virtual engines, it is no longer possible to know which specific
physical engine a given request will be executed on at the time that
request is generated. This means that the request itself must be engine
agnostic - any direct register writes must be relative to the engine
and not absolute addresses.
The LRI command has support for engine relative addressing. However,
the mechanism is not transparent to the driver. The scheme for Gen11
(MI_LRI_ADD_CS_MMIO_START) requires the LRI address to have no
absolute engine base component. The hardware then adds on the correct
engine offset at execution time.
Due to the non-trivial and differing schemes on different hardware, it
is not possible to simply update the code that creates the LRI
commands to set a remap flag and let the hardware get on with it.
Instead, this patch adds function wrappers for generating the LRI
command itself and then for constructing the correct address to use
with the LRI.
v2: Fix build break in GVT. Remove flags parameter [review feedback
from Chris W].
Signed-off-by: John Harrison <John.C.Harrison at Intel.com>
---
drivers/gpu/drm/i915/gvt/mmio_context.c | 16 ++++--
drivers/gpu/drm/i915/i915_cmd_parser.c | 4 +-
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 4 +-
drivers/gpu/drm/i915/i915_perf.c | 19 ++++---
drivers/gpu/drm/i915/intel_engine_cs.c | 11 ++++
drivers/gpu/drm/i915/intel_gpu_commands.h | 6 ++-
drivers/gpu/drm/i915/intel_lrc.c | 80 ++++++++++++++++--------------
drivers/gpu/drm/i915/intel_lrc_reg.h | 4 +-
drivers/gpu/drm/i915/intel_mocs.c | 17 ++++---
drivers/gpu/drm/i915/intel_ringbuffer.c | 45 ++++++++++++++---
drivers/gpu/drm/i915/intel_ringbuffer.h | 4 ++
drivers/gpu/drm/i915/intel_workarounds.c | 4 +-
12 files changed, 143 insertions(+), 71 deletions(-)
diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c b/drivers/gpu/drm/i915/gvt/mmio_context.c
index f64c76dd11d4..a62f4214ad32 100644
--- a/drivers/gpu/drm/i915/gvt/mmio_context.c
+++ b/drivers/gpu/drm/i915/gvt/mmio_context.c
@@ -199,14 +199,14 @@ restore_context_mmio_for_inhibit(struct intel_vgpu *vgpu,
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(count);
+ *cs++ = i915_get_lri_cmd(req->engine, count);
for (mmio = gvt->engine_mmio_list.mmio;
i915_mmio_reg_valid(mmio->reg); mmio++) {
if (mmio->ring_id != ring_id ||
!mmio->in_context)
continue;
- *cs++ = i915_mmio_reg_offset(mmio->reg);
+ *cs++ = i915_get_lri_reg(req->engine, mmio->reg);
*cs++ = vgpu_vreg_t(vgpu, mmio->reg) |
(mmio->mask << 16);
gvt_dbg_core("add lri reg pair 0x%x:0x%x in inhibit ctx, vgpu:%d, rind_id:%d\n",
@@ -234,7 +234,11 @@ restore_render_mocs_control_for_inhibit(struct intel_vgpu *vgpu,
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(GEN9_MOCS_SIZE);
+ /*
+ * GEN9_GFX_MOCS is not engine relative, therefore there is no
+ * need for relative addressing.
+ */
+ *cs++ = __MI_LOAD_REGISTER_IMM(GEN9_MOCS_SIZE);
for (index = 0; index < GEN9_MOCS_SIZE; index++) {
*cs++ = i915_mmio_reg_offset(GEN9_GFX_MOCS(index));
@@ -261,7 +265,11 @@ restore_render_mocs_l3cc_for_inhibit(struct intel_vgpu *vgpu,
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(GEN9_MOCS_SIZE / 2);
+ /*
+ * GEN9_LNCFCMOCS is not engine relative, therefore there is no
+ * need for relative addressing.
+ */
+ *cs++ = __MI_LOAD_REGISTER_IMM(GEN9_MOCS_SIZE / 2);
for (index = 0; index < GEN9_MOCS_SIZE / 2; index++) {
*cs++ = i915_mmio_reg_offset(GEN9_LNCFCMOCS(index));
diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
index 503d548a55f7..91ebe18aacc6 100644
--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
+++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
@@ -220,7 +220,7 @@ static const struct drm_i915_cmd_descriptor common_cmds[] = {
CMD( MI_SUSPEND_FLUSH, SMI, F, 1, S ),
CMD( MI_SEMAPHORE_MBOX, SMI, !F, 0xFF, R ),
CMD( MI_STORE_DWORD_INDEX, SMI, !F, 0xFF, R ),
- CMD( MI_LOAD_REGISTER_IMM(1), SMI, !F, 0xFF, W,
+ CMD( __MI_LOAD_REGISTER_IMM(1), SMI, !F, 0xFF, W,
.reg = { .offset = 1, .mask = 0x007FFFFC, .step = 2 } ),
CMD( MI_STORE_REGISTER_MEM, SMI, F, 3, W | B,
.reg = { .offset = 1, .mask = 0x007FFFFC },
@@ -1182,7 +1182,7 @@ static bool check_cmd(const struct intel_engine_cs *engine,
return false;
}
- if (desc->cmd.value == MI_LOAD_REGISTER_IMM(1) &&
+ if (desc->cmd.value == __MI_LOAD_REGISTER_IMM(1) &&
(offset + 2 > length ||
(cmd[offset + 1] & reg->mask) != reg->value)) {
DRM_DEBUG_DRIVER("CMD: Rejected LRI to masked register 0x%08X\n",
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index ee6d301a9627..a16363e59935 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -1966,9 +1966,9 @@ static int i915_reset_gen7_sol_offsets(struct i915_request *rq)
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(4);
+ *cs++ = i915_get_lri_cmd(rq->engine, 4);
for (i = 0; i < 4; i++) {
- *cs++ = i915_mmio_reg_offset(GEN7_SO_WRITE_OFFSET(i));
+ *cs++ = i915_get_lri_reg(rq->engine, GEN7_SO_WRITE_OFFSET(i));
*cs++ = 0;
}
*cs++ = MI_NOOP;
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 9b0292a38865..9f25b5972e19 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -1630,7 +1630,8 @@ static void hsw_disable_metric_set(struct drm_i915_private *dev_priv)
* in the case that the OA unit has been disabled.
*/
static void
-gen8_update_reg_state_unlocked(struct intel_context *ce,
+gen8_update_reg_state_unlocked(struct intel_engine_cs *engine,
+ struct intel_context *ce,
u32 *reg_state,
const struct i915_oa_config *oa_config)
{
@@ -1649,7 +1650,12 @@ gen8_update_reg_state_unlocked(struct intel_context *ce,
};
int i;
- CTX_REG(reg_state, ctx_oactxctrl, GEN8_OACTXCONTROL,
+ /*
+ * NB: The LRI instruction is generated by the hardware.
+ * Should we read it in and assert that the offset flag is set?
+ */
+
+ CTX_REG(engine, reg_state, ctx_oactxctrl, GEN8_OACTXCONTROL,
(i915->perf.oa.period_exponent << GEN8_OA_TIMER_PERIOD_SHIFT) |
(i915->perf.oa.periodic ? GEN8_OA_TIMER_ENABLE : 0) |
GEN8_OA_COUNTER_RESUME);
@@ -1676,10 +1682,10 @@ gen8_update_reg_state_unlocked(struct intel_context *ce,
}
}
- CTX_REG(reg_state, state_offset, flex_regs[i], value);
+ CTX_REG(engine, reg_state, state_offset, flex_regs[i], value);
}
- CTX_REG(reg_state,
+ CTX_REG(engine, reg_state,
CTX_R_PWR_CLK_STATE, GEN8_R_PWR_CLK_STATE,
gen8_make_rpcs(i915, &ce->sseu));
}
@@ -1754,7 +1760,7 @@ static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
ce->state->obj->mm.dirty = true;
regs += LRC_STATE_PN * PAGE_SIZE / sizeof(*regs);
- gen8_update_reg_state_unlocked(ce, regs, oa_config);
+ gen8_update_reg_state_unlocked(engine, ce, regs, oa_config);
i915_gem_object_unpin_map(ce->state->obj);
}
@@ -2148,7 +2154,8 @@ void i915_oa_init_reg_state(struct intel_engine_cs *engine,
stream = engine->i915->perf.oa.exclusive_stream;
if (stream)
- gen8_update_reg_state_unlocked(ce, regs, stream->oa_config);
+ gen8_update_reg_state_unlocked(engine, ce, regs,
+ stream->oa_config);
}
/**
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 652c1b3ba190..ba9d86a463d1 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -246,6 +246,17 @@ static u32 __engine_mmio_base(struct drm_i915_private *i915,
return bases[i].base;
}
+bool i915_engine_has_relative_lri(const struct intel_engine_cs *engine)
+{
+ if (INTEL_GEN(engine->i915) < 11)
+ return false;
+
+ if (engine->id == BCS0)
+ return false;
+
+ return true;
+}
+
static void __sprint_engine_name(char *name, const struct engine_info *info)
{
WARN_ON(snprintf(name, INTEL_ENGINE_CS_MAX_NAME, "%s%u",
diff --git a/drivers/gpu/drm/i915/intel_gpu_commands.h b/drivers/gpu/drm/i915/intel_gpu_commands.h
index a34ece53a771..97c2cfd1d38f 100644
--- a/drivers/gpu/drm/i915/intel_gpu_commands.h
+++ b/drivers/gpu/drm/i915/intel_gpu_commands.h
@@ -123,9 +123,13 @@
* simply ignores the register load under certain conditions.
* - One can actually load arbitrary many arbitrary registers: Simply issue x
* address/value pairs. Don't overdue it, though, x <= 2^4 must hold!
+ * - Newer hardware supports engine relative addresses but older hardware does
+ * not. So never call MI_LRI directly, always use the i915_get_lri_cmd()
+ * and i915_get_lri_reg() helper functions.
*/
-#define MI_LOAD_REGISTER_IMM(x) MI_INSTR(0x22, 2*(x)-1)
+#define __MI_LOAD_REGISTER_IMM(x) MI_INSTR(0x22, 2*(x)-1)
#define MI_LRI_FORCE_POSTED (1<<12)
+#define MI_LRI_ADD_CS_MMIO_START (1<<19)
#define MI_STORE_REGISTER_MEM MI_INSTR(0x24, 1)
#define MI_STORE_REGISTER_MEM_GEN8 MI_INSTR(0x24, 2)
#define MI_SRM_LRM_GLOBAL_GTT (1<<22)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index e54e0064b2d6..02ef86828593 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1455,13 +1455,14 @@ static int emit_pdps(struct i915_request *rq)
return PTR_ERR(cs);
/* Ensure the LRI have landed before we invalidate & continue */
- *cs++ = MI_LOAD_REGISTER_IMM(2 * GEN8_3LVL_PDPES) | MI_LRI_FORCE_POSTED;
+ *cs++ = i915_get_lri_cmd(engine, 2 * GEN8_3LVL_PDPES) |
+ MI_LRI_FORCE_POSTED;
for (i = GEN8_3LVL_PDPES; i--; ) {
const dma_addr_t pd_daddr = i915_page_dir_dma_addr(ppgtt, i);
- *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_UDW(engine, i));
+ *cs++ = i915_get_lri_reg(engine, GEN8_RING_PDP_UDW(engine, i));
*cs++ = upper_32_bits(pd_daddr);
- *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_LDW(engine, i));
+ *cs++ = i915_get_lri_reg(engine, GEN8_RING_PDP_LDW(engine, i));
*cs++ = lower_32_bits(pd_daddr);
}
*cs++ = MI_NOOP;
@@ -1535,8 +1536,8 @@ gen8_emit_flush_coherentl3_wa(struct intel_engine_cs *engine, u32 *batch)
*batch++ = i915_scratch_offset(engine->i915) + 256;
*batch++ = 0;
- *batch++ = MI_LOAD_REGISTER_IMM(1);
- *batch++ = i915_mmio_reg_offset(GEN8_L3SQCREG4);
+ *batch++ = i915_get_lri_cmd(engine, 1);
+ *batch++ = i915_get_lri_reg(engine, GEN8_L3SQCREG4);
*batch++ = 0x40400000 | GEN8_LQSC_FLUSH_COHERENT_LINES;
batch = gen8_emit_pipe_control(batch,
@@ -1606,13 +1607,14 @@ struct lri {
u32 value;
};
-static u32 *emit_lri(u32 *batch, const struct lri *lri, unsigned int count)
+static u32 *emit_lri(struct intel_engine_cs *engine, u32 *batch,
+ const struct lri *lri, unsigned int count)
{
GEM_BUG_ON(!count || count > 63);
- *batch++ = MI_LOAD_REGISTER_IMM(count);
+ *batch++ = i915_get_lri_cmd(engine, count);
do {
- *batch++ = i915_mmio_reg_offset(lri->reg);
+ *batch++ = i915_get_lri_reg(engine, lri->reg);
*batch++ = lri->value;
} while (lri++, --count);
*batch++ = MI_NOOP;
@@ -1650,7 +1652,7 @@ static u32 *gen9_init_indirectctx_bb(struct intel_engine_cs *engine, u32 *batch)
/* WaFlushCoherentL3CacheLinesAtContextSwitch:skl,bxt,glk */
batch = gen8_emit_flush_coherentl3_wa(engine, batch);
- batch = emit_lri(batch, lri, ARRAY_SIZE(lri));
+ batch = emit_lri(engine, batch, lri, ARRAY_SIZE(lri));
/* WaMediaPoolStateCmdInWABB:bxt,glk */
if (HAS_POOLED_EU(engine->i915)) {
@@ -2659,10 +2661,10 @@ static void execlists_init_reg_state(u32 *regs,
* values (including all the missing MI_LOAD_REGISTER_IMM commands that
* we are not initializing here).
*/
- regs[CTX_LRI_HEADER_0] = MI_LOAD_REGISTER_IMM(rcs ? 14 : 11) |
- MI_LRI_FORCE_POSTED;
+ regs[CTX_LRI_HEADER_0] = i915_get_lri_cmd(engine, rcs ? 14 : 11) |
+ MI_LRI_FORCE_POSTED;
- CTX_REG(regs, CTX_CONTEXT_CONTROL, RING_CONTEXT_CONTROL(engine),
+ CTX_REG(engine, regs, CTX_CONTEXT_CONTROL, RING_CONTEXT_CONTROL(engine),
_MASKED_BIT_DISABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT) |
_MASKED_BIT_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH));
if (INTEL_GEN(engine->i915) < 11) {
@@ -2670,22 +2672,23 @@ static void execlists_init_reg_state(u32 *regs,
_MASKED_BIT_DISABLE(CTX_CTRL_ENGINE_CTX_SAVE_INHIBIT |
CTX_CTRL_RS_CTX_ENABLE);
}
- CTX_REG(regs, CTX_RING_HEAD, RING_HEAD(base), 0);
- CTX_REG(regs, CTX_RING_TAIL, RING_TAIL(base), 0);
- CTX_REG(regs, CTX_RING_BUFFER_START, RING_START(base), 0);
- CTX_REG(regs, CTX_RING_BUFFER_CONTROL, RING_CTL(base),
+ CTX_REG(engine, regs, CTX_RING_HEAD, RING_HEAD(base), 0);
+ CTX_REG(engine, regs, CTX_RING_TAIL, RING_TAIL(base), 0);
+ CTX_REG(engine, regs, CTX_RING_BUFFER_START, RING_START(base), 0);
+ CTX_REG(engine, regs, CTX_RING_BUFFER_CONTROL, RING_CTL(base),
RING_CTL_SIZE(ring->size) | RING_VALID);
- CTX_REG(regs, CTX_BB_HEAD_U, RING_BBADDR_UDW(base), 0);
- CTX_REG(regs, CTX_BB_HEAD_L, RING_BBADDR(base), 0);
- CTX_REG(regs, CTX_BB_STATE, RING_BBSTATE(base), RING_BB_PPGTT);
- CTX_REG(regs, CTX_SECOND_BB_HEAD_U, RING_SBBADDR_UDW(base), 0);
- CTX_REG(regs, CTX_SECOND_BB_HEAD_L, RING_SBBADDR(base), 0);
- CTX_REG(regs, CTX_SECOND_BB_STATE, RING_SBBSTATE(base), 0);
+ CTX_REG(engine, regs, CTX_BB_HEAD_U, RING_BBADDR_UDW(base), 0);
+ CTX_REG(engine, regs, CTX_BB_HEAD_L, RING_BBADDR(base), 0);
+ CTX_REG(engine, regs, CTX_BB_STATE, RING_BBSTATE(base), RING_BB_PPGTT);
+ CTX_REG(engine, regs, CTX_SECOND_BB_HEAD_U, RING_SBBADDR_UDW(base), 0);
+ CTX_REG(engine, regs, CTX_SECOND_BB_HEAD_L, RING_SBBADDR(base), 0);
+ CTX_REG(engine, regs, CTX_SECOND_BB_STATE, RING_SBBSTATE(base), 0);
if (rcs) {
struct i915_ctx_workarounds *wa_ctx = &engine->wa_ctx;
- CTX_REG(regs, CTX_RCS_INDIRECT_CTX, RING_INDIRECT_CTX(base), 0);
- CTX_REG(regs, CTX_RCS_INDIRECT_CTX_OFFSET,
+ CTX_REG(engine, regs, CTX_RCS_INDIRECT_CTX,
+ RING_INDIRECT_CTX(base), 0);
+ CTX_REG(engine, regs, CTX_RCS_INDIRECT_CTX_OFFSET,
RING_INDIRECT_CTX_OFFSET(base), 0);
if (wa_ctx->indirect_ctx.size) {
u32 ggtt_offset = i915_ggtt_offset(wa_ctx->vma);
@@ -2698,7 +2701,8 @@ static void execlists_init_reg_state(u32 *regs,
intel_lr_indirect_ctx_offset(engine) << 6;
}
- CTX_REG(regs, CTX_BB_PER_CTX_PTR, RING_BB_PER_CTX_PTR(base), 0);
+ CTX_REG(engine, regs, CTX_BB_PER_CTX_PTR,
+ RING_BB_PER_CTX_PTR(base), 0);
if (wa_ctx->per_ctx.size) {
u32 ggtt_offset = i915_ggtt_offset(wa_ctx->vma);
@@ -2707,18 +2711,19 @@ static void execlists_init_reg_state(u32 *regs,
}
}
- regs[CTX_LRI_HEADER_1] = MI_LOAD_REGISTER_IMM(9) | MI_LRI_FORCE_POSTED;
+ regs[CTX_LRI_HEADER_1] = i915_get_lri_cmd(engine, 9) |
+ MI_LRI_FORCE_POSTED;
- CTX_REG(regs, CTX_CTX_TIMESTAMP, RING_CTX_TIMESTAMP(base), 0);
+ CTX_REG(engine, regs, CTX_CTX_TIMESTAMP, RING_CTX_TIMESTAMP(base), 0);
/* PDP values well be assigned later if needed */
- CTX_REG(regs, CTX_PDP3_UDW, GEN8_RING_PDP_UDW(engine, 3), 0);
- CTX_REG(regs, CTX_PDP3_LDW, GEN8_RING_PDP_LDW(engine, 3), 0);
- CTX_REG(regs, CTX_PDP2_UDW, GEN8_RING_PDP_UDW(engine, 2), 0);
- CTX_REG(regs, CTX_PDP2_LDW, GEN8_RING_PDP_LDW(engine, 2), 0);
- CTX_REG(regs, CTX_PDP1_UDW, GEN8_RING_PDP_UDW(engine, 1), 0);
- CTX_REG(regs, CTX_PDP1_LDW, GEN8_RING_PDP_LDW(engine, 1), 0);
- CTX_REG(regs, CTX_PDP0_UDW, GEN8_RING_PDP_UDW(engine, 0), 0);
- CTX_REG(regs, CTX_PDP0_LDW, GEN8_RING_PDP_LDW(engine, 0), 0);
+ CTX_REG(engine, regs, CTX_PDP3_UDW, GEN8_RING_PDP_UDW(engine, 3), 0);
+ CTX_REG(engine, regs, CTX_PDP3_LDW, GEN8_RING_PDP_LDW(engine, 3), 0);
+ CTX_REG(engine, regs, CTX_PDP2_UDW, GEN8_RING_PDP_UDW(engine, 2), 0);
+ CTX_REG(engine, regs, CTX_PDP2_LDW, GEN8_RING_PDP_LDW(engine, 2), 0);
+ CTX_REG(engine, regs, CTX_PDP1_UDW, GEN8_RING_PDP_UDW(engine, 1), 0);
+ CTX_REG(engine, regs, CTX_PDP1_LDW, GEN8_RING_PDP_LDW(engine, 1), 0);
+ CTX_REG(engine, regs, CTX_PDP0_UDW, GEN8_RING_PDP_UDW(engine, 0), 0);
+ CTX_REG(engine, regs, CTX_PDP0_LDW, GEN8_RING_PDP_LDW(engine, 0), 0);
if (i915_vm_is_4lvl(&ppgtt->vm)) {
/* 64b PPGTT (48bit canonical)
@@ -2734,8 +2739,9 @@ static void execlists_init_reg_state(u32 *regs,
}
if (rcs) {
- regs[CTX_LRI_HEADER_2] = MI_LOAD_REGISTER_IMM(1);
- CTX_REG(regs, CTX_R_PWR_CLK_STATE, GEN8_R_PWR_CLK_STATE, 0);
+ regs[CTX_LRI_HEADER_2] = i915_get_lri_cmd(engine, 1);
+ CTX_REG(engine, regs, CTX_R_PWR_CLK_STATE,
+ GEN8_R_PWR_CLK_STATE, 0);
i915_oa_init_reg_state(engine, ce, regs);
}
diff --git a/drivers/gpu/drm/i915/intel_lrc_reg.h b/drivers/gpu/drm/i915/intel_lrc_reg.h
index 5ef932d810a7..40b1142d0d74 100644
--- a/drivers/gpu/drm/i915/intel_lrc_reg.h
+++ b/drivers/gpu/drm/i915/intel_lrc_reg.h
@@ -39,10 +39,10 @@
#define CTX_R_PWR_CLK_STATE 0x42
#define CTX_END 0x44
-#define CTX_REG(reg_state, pos, reg, val) do { \
+#define CTX_REG(engine, reg_state, pos, reg, val) do { \
u32 *reg_state__ = (reg_state); \
const u32 pos__ = (pos); \
- (reg_state__)[(pos__) + 0] = i915_mmio_reg_offset(reg); \
+ (reg_state__)[(pos__) + 0] = i915_get_lri_reg((engine), (reg)); \
(reg_state__)[(pos__) + 1] = (val); \
} while (0)
diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c
index 274ba78500c0..bb11d0f68bba 100644
--- a/drivers/gpu/drm/i915/intel_mocs.c
+++ b/drivers/gpu/drm/i915/intel_mocs.c
@@ -322,9 +322,6 @@ static u32 get_entry_control(const struct drm_i915_mocs_table *table,
/**
* intel_mocs_init_engine() - emit the mocs control table
* @engine: The engine for whom to emit the registers.
- *
- * This function simply emits a MI_LOAD_REGISTER_IMM command for the
- * given table starting at the given address.
*/
void intel_mocs_init_engine(struct intel_engine_cs *engine)
{
@@ -378,18 +375,20 @@ static int emit_mocs_control_table(struct i915_request *rq,
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(table->n_entries);
+ *cs++ = i915_get_lri_cmd(rq->engine, table->n_entries);
for (index = 0; index < table->size; index++) {
u32 value = get_entry_control(table, index);
- *cs++ = i915_mmio_reg_offset(mocs_register(engine, index));
+ *cs++ = i915_get_lri_reg(rq->engine,
+ mocs_register(engine, index));
*cs++ = value;
}
/* All remaining entries are also unused */
for (; index < table->n_entries; index++) {
- *cs++ = i915_mmio_reg_offset(mocs_register(engine, index));
+ *cs++ = i915_get_lri_reg(rq->engine,
+ mocs_register(engine, index));
*cs++ = unused_value;
}
@@ -447,7 +446,11 @@ static int emit_mocs_l3cc_table(struct i915_request *rq,
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(table->n_entries / 2);
+ /*
+ * GEN9_LNCFCMOCS is not engine relative, therefore there is no
+ * need for relative addressing?
+ */
+ *cs++ = __MI_LOAD_REGISTER_IMM(table->n_entries / 2);
for (i = 0; i < table->size / 2; i++) {
u16 low = get_entry_l3cc(table, 2 * i);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index f26f5cc1584c..cca801e458bc 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1636,12 +1636,13 @@ static int load_pd_dir(struct i915_request *rq,
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(1);
- *cs++ = i915_mmio_reg_offset(RING_PP_DIR_DCLV(engine));
+ /* Can these not be merged into a single LRI??? */
+ *cs++ = i915_get_lri_cmd(engine, 1);
+ *cs++ = i915_get_lri_reg(engine, RING_PP_DIR_DCLV(engine));
*cs++ = PP_DIR_DCLV_2G;
- *cs++ = MI_LOAD_REGISTER_IMM(1);
- *cs++ = i915_mmio_reg_offset(RING_PP_DIR_BASE(engine));
+ *cs++ = i915_get_lri_cmd(engine, 1);
+ *cs++ = i915_get_lri_reg(engine, RING_PP_DIR_BASE(engine));
*cs++ = ppgtt->pd.base.ggtt_offset << 10;
intel_ring_advance(rq, cs);
@@ -1706,7 +1707,11 @@ static inline int mi_set_context(struct i915_request *rq, u32 flags)
if (num_engines) {
struct intel_engine_cs *signaller;
- *cs++ = MI_LOAD_REGISTER_IMM(num_engines);
+ /*
+ * Must use absolute engine address as the register
+ * write is targeting a different engine.
+ */
+ *cs++ = __MI_LOAD_REGISTER_IMM(num_engines);
for_each_engine(signaller, i915, id) {
if (signaller == engine)
continue;
@@ -1752,7 +1757,11 @@ static inline int mi_set_context(struct i915_request *rq, u32 flags)
struct intel_engine_cs *signaller;
i915_reg_t last_reg = {}; /* keep gcc quiet */
- *cs++ = MI_LOAD_REGISTER_IMM(num_engines);
+ /*
+ * Must use absolute engine address as the register
+ * write is targeting a different engine.
+ */
+ *cs++ = __MI_LOAD_REGISTER_IMM(num_engines);
for_each_engine(signaller, i915, id) {
if (signaller == engine)
continue;
@@ -1794,9 +1803,9 @@ static int remap_l3(struct i915_request *rq, int slice)
* here because no other code should access these registers other than
* at initialization time.
*/
- *cs++ = MI_LOAD_REGISTER_IMM(GEN7_L3LOG_SIZE/4);
+ *cs++ = i915_get_lri_cmd(rq->engine, GEN7_L3LOG_SIZE/4);
for (i = 0; i < GEN7_L3LOG_SIZE/4; i++) {
- *cs++ = i915_mmio_reg_offset(GEN7_L3LOG(slice, i));
+ *cs++ = i915_get_lri_reg(rq->engine, GEN7_L3LOG(slice, i));
*cs++ = remap_info[i];
}
*cs++ = MI_NOOP;
@@ -2381,3 +2390,23 @@ int intel_init_vebox_ring_buffer(struct intel_engine_cs *engine)
return intel_init_ring_buffer(engine);
}
+
+u32 i915_get_lri_cmd(const struct intel_engine_cs *engine, u32 word_count)
+{
+ u32 word;
+
+ word = __MI_LOAD_REGISTER_IMM(word_count);
+
+ if (i915_engine_has_relative_lri(engine))
+ word |= MI_LRI_ADD_CS_MMIO_START;
+
+ return word;
+}
+
+u32 i915_get_lri_reg(const struct intel_engine_cs *engine, i915_reg_t reg)
+{
+ if (!i915_engine_has_relative_lri(engine))
+ return i915_mmio_reg_offset(reg);
+
+ return i915_mmio_reg_offset(reg) - engine->mmio_base;
+}
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index e612bdca9fd9..a4dfed253edd 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -549,4 +549,8 @@ intel_engine_get_hangcheck_seqno(struct intel_engine_cs *engine)
return intel_read_status_page(engine, I915_GEM_HWS_HANGCHECK);
}
+bool i915_engine_has_relative_lri(const struct intel_engine_cs *engine);
+u32 i915_get_lri_cmd(const struct intel_engine_cs *engine, u32 word_count);
+u32 i915_get_lri_reg(const struct intel_engine_cs *engine, i915_reg_t reg);
+
#endif /* _INTEL_RINGBUFFER_H_ */
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index 283e9a4ef3ca..53b7109e286d 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -614,9 +614,9 @@ int intel_engine_emit_ctx_wa(struct i915_request *rq)
if (IS_ERR(cs))
return PTR_ERR(cs);
- *cs++ = MI_LOAD_REGISTER_IMM(wal->count);
+ *cs++ = i915_get_lri_cmd(rq->engine, wal->count);
for (i = 0, wa = wal->list; i < wal->count; i++, wa++) {
- *cs++ = i915_mmio_reg_offset(wa->reg);
+ *cs++ = i915_get_lri_reg(rq->engine, wa->reg);
*cs++ = wa->val;
}
*cs++ = MI_NOOP;
--
2.16.1
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