This is a note to let you know that I've just added the patch titled
drm/msm/dpu: stop using raw IRQ indices in the kernel output
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-msm-dpu-stop-using-raw-irq-indices-in-the-kernel.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2850cce3890243befc59ede791be063ee66a4167
Author: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Date: Wed Aug 2 13:04:24 2023 +0300
drm/msm/dpu: stop using raw IRQ indices in the kernel output
[ Upstream commit 6893199183f836e1ff452082f0f9d068364b2f17 ]
In preparation to reworking IRQ indcies, stop using raw IRQ indices in
kernel output (both printk and debugfs). Instead use a pair of register
index and bit. This corresponds closer to the values in HW catalog.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/550933/
Link: https://lore.kernel.org/r/20230802100426.4184892-7-dmitry.baryshkov@xxxxxxxxxx
Stable-dep-of: 530f272053a5 ("drm/msm/dpu: Add callback function pointer check before its call")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 3961b514a9a18..5fb7e2e10801d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -357,7 +357,7 @@ static int dpu_encoder_helper_wait_event_timeout(int32_t drm_id,
u32 irq_idx, struct dpu_encoder_wait_info *info);
int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
- int irq,
+ int irq_idx,
void (*func)(void *arg),
struct dpu_encoder_wait_info *wait_info)
{
@@ -372,36 +372,36 @@ int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
/* return EWOULDBLOCK since we know the wait isn't necessary */
if (phys_enc->enable_state == DPU_ENC_DISABLED) {
- DRM_ERROR("encoder is disabled id=%u, callback=%ps, irq=%d\n",
+ DRM_ERROR("encoder is disabled id=%u, callback=%ps, IRQ=[%d, %d]\n",
DRMID(phys_enc->parent), func,
- irq);
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
return -EWOULDBLOCK;
}
- if (irq < 0) {
+ if (irq_idx < 0) {
DRM_DEBUG_KMS("skip irq wait id=%u, callback=%ps\n",
DRMID(phys_enc->parent), func);
return 0;
}
- DRM_DEBUG_KMS("id=%u, callback=%ps, irq=%d, pp=%d, pending_cnt=%d\n",
+ DRM_DEBUG_KMS("id=%u, callback=%ps, IRQ=[%d, %d], pp=%d, pending_cnt=%d\n",
DRMID(phys_enc->parent), func,
- irq, phys_enc->hw_pp->idx - PINGPONG_0,
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx), phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
ret = dpu_encoder_helper_wait_event_timeout(
DRMID(phys_enc->parent),
- irq,
+ irq_idx,
wait_info);
if (ret <= 0) {
- irq_status = dpu_core_irq_read(phys_enc->dpu_kms, irq);
+ irq_status = dpu_core_irq_read(phys_enc->dpu_kms, irq_idx);
if (irq_status) {
unsigned long flags;
- DRM_DEBUG_KMS("irq not triggered id=%u, callback=%ps, irq=%d, pp=%d, atomic_cnt=%d\n",
+ DRM_DEBUG_KMS("IRQ=[%d, %d] not triggered id=%u, callback=%ps, pp=%d, atomic_cnt=%d\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx),
DRMID(phys_enc->parent), func,
- irq,
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
local_irq_save(flags);
@@ -410,16 +410,16 @@ int dpu_encoder_helper_wait_for_irq(struct dpu_encoder_phys *phys_enc,
ret = 0;
} else {
ret = -ETIMEDOUT;
- DRM_DEBUG_KMS("irq timeout id=%u, callback=%ps, irq=%d, pp=%d, atomic_cnt=%d\n",
+ DRM_DEBUG_KMS("IRQ=[%d, %d] timeout id=%u, callback=%ps, pp=%d, atomic_cnt=%d\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx),
DRMID(phys_enc->parent), func,
- irq,
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
}
} else {
ret = 0;
trace_dpu_enc_irq_wait_success(DRMID(phys_enc->parent),
- func, irq,
+ func, irq_idx,
phys_enc->hw_pp->idx - PINGPONG_0,
atomic_read(wait_info->atomic_cnt));
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
index 3d6d13407dded..c413e9917d7eb 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
@@ -197,8 +197,7 @@ static const struct dpu_intr_reg dpu_intr_set_7xxx[] = {
},
};
-#define DPU_IRQ_REG(irq_idx) (irq_idx / 32)
-#define DPU_IRQ_MASK(irq_idx) (BIT(irq_idx % 32))
+#define DPU_IRQ_MASK(irq_idx) (BIT(DPU_IRQ_BIT(irq_idx)))
static inline bool dpu_core_irq_is_valid(int irq_idx)
{
@@ -220,10 +219,11 @@ static void dpu_core_irq_callback_handler(struct dpu_kms *dpu_kms, int irq_idx)
{
struct dpu_hw_intr_entry *irq_entry = dpu_core_irq_get_entry(dpu_kms->hw_intr, irq_idx);
- VERB("irq_idx=%d\n", irq_idx);
+ VERB("IRQ=[%d, %d]\n", DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
if (!irq_entry->cb)
- DRM_ERROR("no registered cb, idx:%d\n", irq_idx);
+ DRM_ERROR("no registered cb, IRQ=[%d, %d]\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
atomic_inc(&irq_entry->count);
@@ -305,7 +305,8 @@ static int dpu_hw_intr_enable_irq_locked(struct dpu_hw_intr *intr, int irq_idx)
return -EINVAL;
if (!dpu_core_irq_is_valid(irq_idx)) {
- pr_err("invalid IRQ index: [%d]\n", irq_idx);
+ pr_err("invalid IRQ=[%d, %d]\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
return -EINVAL;
}
@@ -341,7 +342,8 @@ static int dpu_hw_intr_enable_irq_locked(struct dpu_hw_intr *intr, int irq_idx)
intr->cache_irq_mask[reg_idx] = cache_irq_mask;
}
- pr_debug("DPU IRQ %d %senabled: MASK:0x%.8lx, CACHE-MASK:0x%.8x\n", irq_idx, dbgstr,
+ pr_debug("DPU IRQ=[%d, %d] %senabled: MASK:0x%.8lx, CACHE-MASK:0x%.8x\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx), dbgstr,
DPU_IRQ_MASK(irq_idx), cache_irq_mask);
return 0;
@@ -358,7 +360,8 @@ static int dpu_hw_intr_disable_irq_locked(struct dpu_hw_intr *intr, int irq_idx)
return -EINVAL;
if (!dpu_core_irq_is_valid(irq_idx)) {
- pr_err("invalid IRQ index: [%d]\n", irq_idx);
+ pr_err("invalid IRQ=[%d, %d]\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
return -EINVAL;
}
@@ -390,7 +393,8 @@ static int dpu_hw_intr_disable_irq_locked(struct dpu_hw_intr *intr, int irq_idx)
intr->cache_irq_mask[reg_idx] = cache_irq_mask;
}
- pr_debug("DPU IRQ %d %sdisabled: MASK:0x%.8lx, CACHE-MASK:0x%.8x\n", irq_idx, dbgstr,
+ pr_debug("DPU IRQ=[%d, %d] %sdisabled: MASK:0x%.8lx, CACHE-MASK:0x%.8x\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx), dbgstr,
DPU_IRQ_MASK(irq_idx), cache_irq_mask);
return 0;
@@ -443,7 +447,7 @@ u32 dpu_core_irq_read(struct dpu_kms *dpu_kms, int irq_idx)
return 0;
if (!dpu_core_irq_is_valid(irq_idx)) {
- pr_err("invalid IRQ index: [%d]\n", irq_idx);
+ pr_err("invalid IRQ=[%d, %d]\n", DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
return 0;
}
@@ -519,16 +523,19 @@ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
int ret;
if (!irq_cb) {
- DPU_ERROR("invalid ird_idx:%d irq_cb:%ps\n", irq_idx, irq_cb);
+ DPU_ERROR("invalid IRQ=[%d, %d] irq_cb:%ps\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx), irq_cb);
return -EINVAL;
}
if (!dpu_core_irq_is_valid(irq_idx)) {
- DPU_ERROR("invalid IRQ index: [%d]\n", irq_idx);
+ DPU_ERROR("invalid IRQ=[%d, %d]\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
return -EINVAL;
}
- VERB("[%pS] irq_idx=%d\n", __builtin_return_address(0), irq_idx);
+ VERB("[%pS] IRQ=[%d, %d]\n", __builtin_return_address(0),
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
@@ -547,8 +554,8 @@ int dpu_core_irq_register_callback(struct dpu_kms *dpu_kms, int irq_idx,
dpu_kms->hw_intr,
irq_idx);
if (ret)
- DPU_ERROR("Fail to enable IRQ for irq_idx:%d\n",
- irq_idx);
+ DPU_ERROR("Failed/ to enable IRQ=[%d, %d]\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
trace_dpu_irq_register_success(irq_idx);
@@ -563,19 +570,21 @@ int dpu_core_irq_unregister_callback(struct dpu_kms *dpu_kms, int irq_idx)
int ret;
if (!dpu_core_irq_is_valid(irq_idx)) {
- DPU_ERROR("invalid IRQ index: [%d]\n", irq_idx);
+ DPU_ERROR("invalid IRQ=[%d, %d]\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
return -EINVAL;
}
- VERB("[%pS] irq_idx=%d\n", __builtin_return_address(0), irq_idx);
+ VERB("[%pS] IRQ=[%d, %d]\n", __builtin_return_address(0),
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx));
spin_lock_irqsave(&dpu_kms->hw_intr->irq_lock, irq_flags);
trace_dpu_core_irq_unregister_callback(irq_idx);
ret = dpu_hw_intr_disable_irq_locked(dpu_kms->hw_intr, irq_idx);
if (ret)
- DPU_ERROR("Fail to disable IRQ for irq_idx:%d: %d\n",
- irq_idx, ret);
+ DPU_ERROR("Failed to disable IRQ=[%d, %d]: %d\n",
+ DPU_IRQ_REG(irq_idx), DPU_IRQ_BIT(irq_idx), ret);
irq_entry = dpu_core_irq_get_entry(dpu_kms->hw_intr, irq_idx);
irq_entry->cb = NULL;
@@ -605,7 +614,8 @@ static int dpu_debugfs_core_irq_show(struct seq_file *s, void *v)
spin_unlock_irqrestore(&dpu_kms->hw_intr->irq_lock, irq_flags);
if (irq_count || cb)
- seq_printf(s, "idx:%d irq:%d cb:%ps\n", i, irq_count, cb);
+ seq_printf(s, "IRQ=[%d, %d] count:%d cb:%ps\n",
+ DPU_IRQ_REG(i), DPU_IRQ_BIT(i), irq_count, cb);
}
return 0;
@@ -651,7 +661,8 @@ void dpu_core_irq_uninstall(struct msm_kms *kms)
for (i = 0; i < DPU_NUM_IRQS; i++) {
irq_entry = dpu_core_irq_get_entry(dpu_kms->hw_intr, i);
if (irq_entry->cb)
- DPU_ERROR("irq_idx=%d still enabled/registered\n", i);
+ DPU_ERROR("IRQ=[%d, %d] still enabled/registered\n",
+ DPU_IRQ_REG(i), DPU_IRQ_BIT(i));
}
dpu_clear_irqs(dpu_kms);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
index bb775b6a24327..9df5d6e737a11 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.h
@@ -37,6 +37,8 @@ enum dpu_hw_intr_reg {
#define MDP_INTFn_INTR(intf) (MDP_INTF0_INTR + (intf - INTF_0))
#define DPU_IRQ_IDX(reg_idx, offset) (reg_idx * 32 + offset)
+#define DPU_IRQ_REG(irq_idx) (irq_idx / 32)
+#define DPU_IRQ_BIT(irq_idx) (irq_idx % 32)
#define DPU_NUM_IRQS (MDP_INTR_MAX * 32)
