[PATCH 08/21] drm/radeon: take ownership of pipe initialization

Andres Rodriguez andresx7 at gmail.com
Tue Mar 7 01:10:35 UTC 2017


Take ownership of pipe initialization away from KFD.

Note that hpd_eop_gpu_addr was already large enough to accomodate all
pipes.

Reviewed-by: Edward O'Callaghan <funfunctor at folklore1984.net>
Acked-by: Christian K├Ânig <christian.koenig at amd.com>
Signed-off-by: Andres Rodriguez <andresx7 at gmail.com>
---
 drivers/gpu/drm/radeon/cik.c        | 27 ++++++++++++++-------------
 drivers/gpu/drm/radeon/radeon_kfd.c | 13 +------------
 2 files changed, 15 insertions(+), 25 deletions(-)

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index f6ff41a..82b57ef 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -4588,37 +4588,38 @@ static int cik_cp_compute_resume(struct radeon_device *rdev)
 		return r;
 
 	/* fix up chicken bits */
 	tmp = RREG32(CP_CPF_DEBUG);
 	tmp |= (1 << 23);
 	WREG32(CP_CPF_DEBUG, tmp);
 
 	/* init the pipes */
 	mutex_lock(&rdev->srbm_mutex);
 
-	eop_gpu_addr = rdev->mec.hpd_eop_gpu_addr;
+	for (i = 0; i < rdev->mec.num_pipe; ++i) {
+		cik_srbm_select(rdev, 0, i, 0, 0);
 
-	cik_srbm_select(rdev, 0, 0, 0, 0);
-
-	/* write the EOP addr */
-	WREG32(CP_HPD_EOP_BASE_ADDR, eop_gpu_addr >> 8);
-	WREG32(CP_HPD_EOP_BASE_ADDR_HI, upper_32_bits(eop_gpu_addr) >> 8);
+		eop_gpu_addr = rdev->mec.hpd_eop_gpu_addr + (i * MEC_HPD_SIZE * 2) ;
+		/* write the EOP addr */
+		WREG32(CP_HPD_EOP_BASE_ADDR, eop_gpu_addr >> 8);
+		WREG32(CP_HPD_EOP_BASE_ADDR_HI, upper_32_bits(eop_gpu_addr) >> 8);
 
-	/* set the VMID assigned */
-	WREG32(CP_HPD_EOP_VMID, 0);
+		/* set the VMID assigned */
+		WREG32(CP_HPD_EOP_VMID, 0);
 
-	/* set the EOP size, register value is 2^(EOP_SIZE+1) dwords */
-	tmp = RREG32(CP_HPD_EOP_CONTROL);
-	tmp &= ~EOP_SIZE_MASK;
-	tmp |= order_base_2(MEC_HPD_SIZE / 8);
-	WREG32(CP_HPD_EOP_CONTROL, tmp);
+		/* set the EOP size, register value is 2^(EOP_SIZE+1) dwords */
+		tmp = RREG32(CP_HPD_EOP_CONTROL);
+		tmp &= ~EOP_SIZE_MASK;
+		tmp |= order_base_2(MEC_HPD_SIZE / 8);
+		WREG32(CP_HPD_EOP_CONTROL, tmp);
 
+	}
 	mutex_unlock(&rdev->srbm_mutex);
 
 	/* init the queues.  Just two for now. */
 	for (i = 0; i < 2; i++) {
 		if (i == 0)
 			idx = CAYMAN_RING_TYPE_CP1_INDEX;
 		else
 			idx = CAYMAN_RING_TYPE_CP2_INDEX;
 
 		if (rdev->ring[idx].mqd_obj == NULL) {
diff --git a/drivers/gpu/drm/radeon/radeon_kfd.c b/drivers/gpu/drm/radeon/radeon_kfd.c
index 87a9ebb..a06e3b1 100644
--- a/drivers/gpu/drm/radeon/radeon_kfd.c
+++ b/drivers/gpu/drm/radeon/radeon_kfd.c
@@ -416,32 +416,21 @@ static int kgd_set_pasid_vmid_mapping(struct kgd_dev *kgd, unsigned int pasid,
 	/* Mapping vmid to pasid also for IH block */
 	write_register(kgd, IH_VMID_0_LUT + vmid * sizeof(uint32_t),
 			pasid_mapping);
 
 	return 0;
 }
 
 static int kgd_init_pipeline(struct kgd_dev *kgd, uint32_t pipe_id,
 				uint32_t hpd_size, uint64_t hpd_gpu_addr)
 {
-	uint32_t mec = (pipe_id / CIK_PIPE_PER_MEC) + 1;
-	uint32_t pipe = (pipe_id % CIK_PIPE_PER_MEC);
-
-	lock_srbm(kgd, mec, pipe, 0, 0);
-	write_register(kgd, CP_HPD_EOP_BASE_ADDR,
-			lower_32_bits(hpd_gpu_addr >> 8));
-	write_register(kgd, CP_HPD_EOP_BASE_ADDR_HI,
-			upper_32_bits(hpd_gpu_addr >> 8));
-	write_register(kgd, CP_HPD_EOP_VMID, 0);
-	write_register(kgd, CP_HPD_EOP_CONTROL, hpd_size);
-	unlock_srbm(kgd);
-
+	/* nothing to do here */
 	return 0;
 }
 
 static int kgd_init_interrupts(struct kgd_dev *kgd, uint32_t pipe_id)
 {
 	uint32_t mec;
 	uint32_t pipe;
 
 	mec = (pipe_id / CIK_PIPE_PER_MEC) + 1;
 	pipe = (pipe_id % CIK_PIPE_PER_MEC);
-- 
2.9.3



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