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Commit 56e51bf0 authored by Tvrtko Ursulin's avatar Tvrtko Ursulin
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drm/i915: Tidy execlists_init_reg_state 

Compact the name of the macro and reg_state variable, and cache
some data in local variables to make the function more compact
and more readable.

v2: Fixup some checkpatch warnings.
Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170221095839.30525-1-tvrtko.ursulin@linux.intel.com
parent e2989f14
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Showing with 56 additions and 71 deletions
drivers/gpu/drm/i915/intel_lrc.c
View file @ 56e51bf0
......@@ -190,7 +190,7 @@
#define CTX_R_PWR_CLK_STATE 0x42
#define CTX_GPGPU_CSR_BASE_ADDRESS 0x44
#define ASSIGN_CTX_REG(reg_state, pos, reg, val) do { \
#define CTX_REG(reg_state, pos, reg, val) do { \
(reg_state)[(pos)+0] = i915_mmio_reg_offset(reg); \
(reg_state)[(pos)+1] = (val); \
} while (0)
......@@ -1812,104 +1812,89 @@ static u32 intel_lr_indirect_ctx_offset(struct intel_engine_cs *engine)
return indirect_ctx_offset;
}
static void execlists_init_reg_state(u32 *reg_state,
static void execlists_init_reg_state(u32 *regs,
struct i915_gem_context *ctx,
struct intel_engine_cs *engine,
struct intel_ring *ring)
{
struct drm_i915_private *dev_priv = engine->i915;
struct i915_hw_ppgtt *ppgtt = ctx->ppgtt ?: dev_priv->mm.aliasing_ppgtt;
u32 base = engine->mmio_base;
bool rcs = engine->id == RCS;
/* A context is actually a big batch buffer with several
* MI_LOAD_REGISTER_IMM commands followed by (reg, value) pairs. The
* values we are setting here are only for the first context restore:
* on a subsequent save, the GPU will recreate this batchbuffer with new
* 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;
CTX_REG(regs, CTX_CONTEXT_CONTROL, RING_CONTEXT_CONTROL(engine),
_MASKED_BIT_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH |
CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT |
(HAS_RESOURCE_STREAMER(dev_priv) ?
CTX_CTRL_RS_CTX_ENABLE : 0)));
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),
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);
if (rcs) {
CTX_REG(regs, CTX_BB_PER_CTX_PTR, RING_BB_PER_CTX_PTR(base), 0);
CTX_REG(regs, CTX_RCS_INDIRECT_CTX, RING_INDIRECT_CTX(base), 0);
CTX_REG(regs, CTX_RCS_INDIRECT_CTX_OFFSET,
RING_INDIRECT_CTX_OFFSET(base), 0);
/* A context is actually a big batch buffer with several MI_LOAD_REGISTER_IMM
* commands followed by (reg, value) pairs. The values we are setting here are
* only for the first context restore: on a subsequent save, the GPU will
* recreate this batchbuffer with new values (including all the missing
* MI_LOAD_REGISTER_IMM commands that we are not initializing here). */
reg_state[CTX_LRI_HEADER_0] =
MI_LOAD_REGISTER_IMM(engine->id == RCS ? 14 : 11) | MI_LRI_FORCE_POSTED;
ASSIGN_CTX_REG(reg_state, CTX_CONTEXT_CONTROL,
RING_CONTEXT_CONTROL(engine),
_MASKED_BIT_ENABLE(CTX_CTRL_INHIBIT_SYN_CTX_SWITCH |
CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT |
(HAS_RESOURCE_STREAMER(dev_priv) ?
CTX_CTRL_RS_CTX_ENABLE : 0)));
ASSIGN_CTX_REG(reg_state, CTX_RING_HEAD, RING_HEAD(engine->mmio_base),
0);
ASSIGN_CTX_REG(reg_state, CTX_RING_TAIL, RING_TAIL(engine->mmio_base),
0);
ASSIGN_CTX_REG(reg_state, CTX_RING_BUFFER_START,
RING_START(engine->mmio_base), 0);
ASSIGN_CTX_REG(reg_state, CTX_RING_BUFFER_CONTROL,
RING_CTL(engine->mmio_base),
RING_CTL_SIZE(ring->size) | RING_VALID);
ASSIGN_CTX_REG(reg_state, CTX_BB_HEAD_U,
RING_BBADDR_UDW(engine->mmio_base), 0);
ASSIGN_CTX_REG(reg_state, CTX_BB_HEAD_L,
RING_BBADDR(engine->mmio_base), 0);
ASSIGN_CTX_REG(reg_state, CTX_BB_STATE,
RING_BBSTATE(engine->mmio_base),
RING_BB_PPGTT);
ASSIGN_CTX_REG(reg_state, CTX_SECOND_BB_HEAD_U,
RING_SBBADDR_UDW(engine->mmio_base), 0);
ASSIGN_CTX_REG(reg_state, CTX_SECOND_BB_HEAD_L,
RING_SBBADDR(engine->mmio_base), 0);
ASSIGN_CTX_REG(reg_state, CTX_SECOND_BB_STATE,
RING_SBBSTATE(engine->mmio_base), 0);
if (engine->id == RCS) {
ASSIGN_CTX_REG(reg_state, CTX_BB_PER_CTX_PTR,
RING_BB_PER_CTX_PTR(engine->mmio_base), 0);
ASSIGN_CTX_REG(reg_state, CTX_RCS_INDIRECT_CTX,
RING_INDIRECT_CTX(engine->mmio_base), 0);
ASSIGN_CTX_REG(reg_state, CTX_RCS_INDIRECT_CTX_OFFSET,
RING_INDIRECT_CTX_OFFSET(engine->mmio_base), 0);
if (engine->wa_ctx.vma) {
struct i915_ctx_workarounds *wa_ctx = &engine->wa_ctx;
u32 ggtt_offset = i915_ggtt_offset(wa_ctx->vma);
reg_state[CTX_RCS_INDIRECT_CTX+1] =
regs[CTX_RCS_INDIRECT_CTX + 1] =
(ggtt_offset + wa_ctx->indirect_ctx.offset) |
(wa_ctx->indirect_ctx.size / CACHELINE_BYTES);
reg_state[CTX_RCS_INDIRECT_CTX_OFFSET+1] =
regs[CTX_RCS_INDIRECT_CTX_OFFSET + 1] =
intel_lr_indirect_ctx_offset(engine) << 6;
reg_state[CTX_BB_PER_CTX_PTR+1] =
regs[CTX_BB_PER_CTX_PTR + 1] =
(ggtt_offset + wa_ctx->per_ctx.offset) | 0x01;
}
}
reg_state[CTX_LRI_HEADER_1] = MI_LOAD_REGISTER_IMM(9) | MI_LRI_FORCE_POSTED;
ASSIGN_CTX_REG(reg_state, CTX_CTX_TIMESTAMP,
RING_CTX_TIMESTAMP(engine->mmio_base), 0);
regs[CTX_LRI_HEADER_1] = MI_LOAD_REGISTER_IMM(9) | MI_LRI_FORCE_POSTED;
CTX_REG(regs, CTX_CTX_TIMESTAMP, RING_CTX_TIMESTAMP(base), 0);
/* PDP values well be assigned later if needed */
ASSIGN_CTX_REG(reg_state, CTX_PDP3_UDW, GEN8_RING_PDP_UDW(engine, 3),
0);
ASSIGN_CTX_REG(reg_state, CTX_PDP3_LDW, GEN8_RING_PDP_LDW(engine, 3),
0);
ASSIGN_CTX_REG(reg_state, CTX_PDP2_UDW, GEN8_RING_PDP_UDW(engine, 2),
0);
ASSIGN_CTX_REG(reg_state, CTX_PDP2_LDW, GEN8_RING_PDP_LDW(engine, 2),
0);
ASSIGN_CTX_REG(reg_state, CTX_PDP1_UDW, GEN8_RING_PDP_UDW(engine, 1),
0);
ASSIGN_CTX_REG(reg_state, CTX_PDP1_LDW, GEN8_RING_PDP_LDW(engine, 1),
0);
ASSIGN_CTX_REG(reg_state, CTX_PDP0_UDW, GEN8_RING_PDP_UDW(engine, 0),
0);
ASSIGN_CTX_REG(reg_state, CTX_PDP0_LDW, GEN8_RING_PDP_LDW(engine, 0),
0);
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);
if (ppgtt && i915_vm_is_48bit(&ppgtt->base)) {
/* 64b PPGTT (48bit canonical)
* PDP0_DESCRIPTOR contains the base address to PML4 and
* other PDP Descriptors are ignored.
*/
ASSIGN_CTX_PML4(ppgtt, reg_state);
ASSIGN_CTX_PML4(ppgtt, regs);
}
if (engine->id == RCS) {
reg_state[CTX_LRI_HEADER_2] = MI_LOAD_REGISTER_IMM(1);
ASSIGN_CTX_REG(reg_state, CTX_R_PWR_CLK_STATE, GEN8_R_PWR_CLK_STATE,
make_rpcs(dev_priv));
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,
make_rpcs(dev_priv));
}
}
......
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