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Message-ID: <20190701083604.24528-2-ttayar@habana.ai>
Date: Mon, 1 Jul 2019 08:36:17 +0000
From: Tomer Tayar <ttayar@...ana.ai>
To: "oded.gabbay@...il.com" <oded.gabbay@...il.com>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] habanalabs: Add busy engines bitmask to HW idle IOCTL
The information which is currently provided as a response to the
"HL_INFO_HW_IDLE" IOCTL is merely a general boolean value.
This patch extends it and provides also a bitmask that indicates which
of the device engines are busy.
Signed-off-by: Tomer Tayar <ttayar@...ana.ai>
---
drivers/misc/habanalabs/debugfs.c | 2 +-
drivers/misc/habanalabs/goya/goya.c | 11 ++++++--
drivers/misc/habanalabs/habanalabs.h | 3 ++-
drivers/misc/habanalabs/habanalabs_ioctl.c | 3 ++-
include/uapi/misc/habanalabs.h | 30 +++++++++++++++++++++-
5 files changed, 43 insertions(+), 6 deletions(-)
diff --git a/drivers/misc/habanalabs/debugfs.c b/drivers/misc/habanalabs/debugfs.c
index 6a5dfb14eca1..18e499c900c7 100644
--- a/drivers/misc/habanalabs/debugfs.c
+++ b/drivers/misc/habanalabs/debugfs.c
@@ -506,7 +506,7 @@ static int engines_show(struct seq_file *s, void *data)
struct hl_dbg_device_entry *dev_entry = entry->dev_entry;
struct hl_device *hdev = dev_entry->hdev;
- hdev->asic_funcs->is_device_idle(hdev, s);
+ hdev->asic_funcs->is_device_idle(hdev, NULL, s);
return 0;
}
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 41e97531f300..75294ec65257 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -2828,7 +2828,7 @@ static int goya_send_job_on_qman0(struct hl_device *hdev, struct hl_cs_job *job)
else
timeout = HL_DEVICE_TIMEOUT_USEC;
- if (!hdev->asic_funcs->is_device_idle(hdev, NULL)) {
+ if (!hdev->asic_funcs->is_device_idle(hdev, NULL, NULL)) {
dev_err_ratelimited(hdev->dev,
"Can't send KMD job on QMAN0 because the device is not idle\n");
return -EBUSY;
@@ -4914,7 +4914,8 @@ int goya_armcp_info_get(struct hl_device *hdev)
return 0;
}
-static bool goya_is_device_idle(struct hl_device *hdev, struct seq_file *s)
+static bool goya_is_device_idle(struct hl_device *hdev, u32 *mask,
+ struct seq_file *s)
{
const char *fmt = "%-5d%-9s%#-14x%#-16x%#x\n";
const char *dma_fmt = "%-5d%-9s%#-14x%#x\n";
@@ -4937,6 +4938,8 @@ static bool goya_is_device_idle(struct hl_device *hdev, struct seq_file *s)
IS_DMA_IDLE(dma_core_sts0);
is_idle &= is_eng_idle;
+ if (mask)
+ *mask |= !is_eng_idle << (GOYA_ENGINE_ID_DMA_0 + i);
if (s)
seq_printf(s, dma_fmt, i, is_eng_idle ? "Y" : "N",
qm_glbl_sts0, dma_core_sts0);
@@ -4958,6 +4961,8 @@ static bool goya_is_device_idle(struct hl_device *hdev, struct seq_file *s)
IS_TPC_IDLE(tpc_cfg_sts);
is_idle &= is_eng_idle;
+ if (mask)
+ *mask |= !is_eng_idle << (GOYA_ENGINE_ID_TPC_0 + i);
if (s)
seq_printf(s, fmt, i, is_eng_idle ? "Y" : "N",
qm_glbl_sts0, cmdq_glbl_sts0, tpc_cfg_sts);
@@ -4976,6 +4981,8 @@ static bool goya_is_device_idle(struct hl_device *hdev, struct seq_file *s)
IS_MME_IDLE(mme_arch_sts);
is_idle &= is_eng_idle;
+ if (mask)
+ *mask |= !is_eng_idle << GOYA_ENGINE_ID_MME_0;
if (s) {
seq_printf(s, fmt, 0, is_eng_idle ? "Y" : "N", qm_glbl_sts0,
cmdq_glbl_sts0, mme_arch_sts);
diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h
index 2c9ea61099b4..10da9940ee0d 100644
--- a/drivers/misc/habanalabs/habanalabs.h
+++ b/drivers/misc/habanalabs/habanalabs.h
@@ -557,7 +557,8 @@ struct hl_asic_funcs {
u32 asid, u64 va, u64 size);
int (*send_heartbeat)(struct hl_device *hdev);
int (*debug_coresight)(struct hl_device *hdev, void *data);
- bool (*is_device_idle)(struct hl_device *hdev, struct seq_file *s);
+ bool (*is_device_idle)(struct hl_device *hdev, u32 *mask,
+ struct seq_file *s);
int (*soft_reset_late_init)(struct hl_device *hdev);
void (*hw_queues_lock)(struct hl_device *hdev);
void (*hw_queues_unlock)(struct hl_device *hdev);
diff --git a/drivers/misc/habanalabs/habanalabs_ioctl.c b/drivers/misc/habanalabs/habanalabs_ioctl.c
index b04585af27ad..07127576b3e8 100644
--- a/drivers/misc/habanalabs/habanalabs_ioctl.c
+++ b/drivers/misc/habanalabs/habanalabs_ioctl.c
@@ -119,7 +119,8 @@ static int hw_idle(struct hl_device *hdev, struct hl_info_args *args)
if ((!max_size) || (!out))
return -EINVAL;
- hw_idle.is_idle = hdev->asic_funcs->is_device_idle(hdev, NULL);
+ hw_idle.is_idle = hdev->asic_funcs->is_device_idle(hdev,
+ &hw_idle.busy_engines_mask, NULL);
return copy_to_user(out, &hw_idle,
min((size_t) max_size, sizeof(hw_idle))) ? -EFAULT : 0;
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index 204ab9b4ae67..3956c226ca35 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -45,6 +45,30 @@ enum goya_queue_id {
GOYA_QUEUE_ID_SIZE
};
+/*
+ * Engine Numbering
+ *
+ * Used in the "busy_engines_mask" field in `struct hl_info_hw_idle'
+ */
+
+enum goya_engine_id {
+ GOYA_ENGINE_ID_DMA_0 = 0,
+ GOYA_ENGINE_ID_DMA_1,
+ GOYA_ENGINE_ID_DMA_2,
+ GOYA_ENGINE_ID_DMA_3,
+ GOYA_ENGINE_ID_DMA_4,
+ GOYA_ENGINE_ID_MME_0,
+ GOYA_ENGINE_ID_TPC_0,
+ GOYA_ENGINE_ID_TPC_1,
+ GOYA_ENGINE_ID_TPC_2,
+ GOYA_ENGINE_ID_TPC_3,
+ GOYA_ENGINE_ID_TPC_4,
+ GOYA_ENGINE_ID_TPC_5,
+ GOYA_ENGINE_ID_TPC_6,
+ GOYA_ENGINE_ID_TPC_7,
+ GOYA_ENGINE_ID_SIZE
+};
+
enum hl_device_status {
HL_DEVICE_STATUS_OPERATIONAL,
HL_DEVICE_STATUS_IN_RESET,
@@ -86,7 +110,11 @@ struct hl_info_dram_usage {
struct hl_info_hw_idle {
__u32 is_idle;
- __u32 pad;
+ /*
+ * Bitmask of busy engines.
+ * Bits definition is according to `enum <chip>_enging_id'.
+ */
+ __u32 busy_engines_mask;
};
struct hl_info_device_status {
--
2.17.1
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