Remove job_done thread and replace it with generic callback based
mechanism.
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynow...@linux.intel.com>
---
drivers/accel/ivpu/ivpu_drv.c | 30 +++--
drivers/accel/ivpu/ivpu_drv.h | 3 +-
drivers/accel/ivpu/ivpu_hw_37xx.c | 29 +++--
drivers/accel/ivpu/ivpu_hw_40xx.c | 30 ++---
drivers/accel/ivpu/ivpu_ipc.c | 196 +++++++++++++++++-------------
drivers/accel/ivpu/ivpu_ipc.h | 22 +++-
drivers/accel/ivpu/ivpu_job.c | 84 +++----------
drivers/accel/ivpu/ivpu_job.h | 6 +-
8 files changed, 199 insertions(+), 201 deletions(-)
diff --git a/drivers/accel/ivpu/ivpu_drv.c b/drivers/accel/ivpu/ivpu_drv.c
index bc15b06e1744..64927682161b 100644
--- a/drivers/accel/ivpu/ivpu_drv.c
+++ b/drivers/accel/ivpu/ivpu_drv.c
@@ -318,13 +318,11 @@ static int ivpu_wait_for_ready(struct ivpu_device *vdev)
if (ivpu_test_mode & IVPU_TEST_MODE_FW_TEST)
return 0;
- ivpu_ipc_consumer_add(vdev, &cons, IVPU_IPC_CHAN_BOOT_MSG);
+ ivpu_ipc_consumer_add(vdev, &cons, IVPU_IPC_CHAN_BOOT_MSG, NULL);
timeout = jiffies + msecs_to_jiffies(vdev->timeout.boot);
while (1) {
- ret = ivpu_ipc_irq_handler(vdev);
- if (ret)
- break;
+ ivpu_ipc_irq_handler(vdev, NULL);
ret = ivpu_ipc_receive(vdev, &cons, &ipc_hdr, NULL, 0);
if (ret != -ETIMEDOUT || time_after_eq(jiffies, timeout))
break;
@@ -378,7 +376,6 @@ int ivpu_boot(struct ivpu_device *vdev)
enable_irq(vdev->irq);
ivpu_hw_irq_enable(vdev);
ivpu_ipc_enable(vdev);
- ivpu_job_done_thread_enable(vdev);
return 0;
}
@@ -388,7 +385,6 @@ void ivpu_prepare_for_reset(struct ivpu_device *vdev)
disable_irq(vdev->irq);
ivpu_ipc_disable(vdev);
ivpu_mmu_disable(vdev);
- ivpu_job_done_thread_disable(vdev);
}
int ivpu_shutdown(struct ivpu_device *vdev)
@@ -429,6 +425,13 @@ static const struct drm_driver driver = {
.minor = DRM_IVPU_DRIVER_MINOR,
};
+static irqreturn_t ivpu_irq_thread_handler(int irq, void *arg)
+{
+ struct ivpu_device *vdev = arg;
+
+ return ivpu_ipc_irq_thread_handler(vdev);
+}
+
static int ivpu_irq_init(struct ivpu_device *vdev)
{
struct pci_dev *pdev = to_pci_dev(vdev->drm.dev);
@@ -442,8 +445,8 @@ static int ivpu_irq_init(struct ivpu_device *vdev)
vdev->irq = pci_irq_vector(pdev, 0);
- ret = devm_request_irq(vdev->drm.dev, vdev->irq,
vdev->hw->ops->irq_handler,
- IRQF_NO_AUTOEN, DRIVER_NAME, vdev);
+ ret = devm_request_threaded_irq(vdev->drm.dev, vdev->irq,
vdev->hw->ops->irq_handler,
+ ivpu_irq_thread_handler,
IRQF_NO_AUTOEN, DRIVER_NAME, vdev);
if (ret)
ivpu_err(vdev, "Failed to request an IRQ %d\n", ret);
@@ -581,20 +584,15 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
ivpu_pm_init(vdev);
- ret = ivpu_job_done_thread_init(vdev);
- if (ret)
- goto err_ipc_fini;
-
ret = ivpu_boot(vdev);
if (ret)
- goto err_job_done_thread_fini;
+ goto err_ipc_fini;
+ ivpu_job_done_consumer_init(vdev);
ivpu_pm_enable(vdev);
return 0;
-err_job_done_thread_fini:
- ivpu_job_done_thread_fini(vdev);
err_ipc_fini:
ivpu_ipc_fini(vdev);
err_fw_fini:
@@ -619,7 +617,7 @@ static void ivpu_dev_fini(struct ivpu_device *vdev)
ivpu_shutdown(vdev);
if (IVPU_WA(d3hot_after_power_off))
pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
- ivpu_job_done_thread_fini(vdev);
+ ivpu_job_done_consumer_fini(vdev);
ivpu_pm_cancel_recovery(vdev);
ivpu_ipc_fini(vdev);
diff --git a/drivers/accel/ivpu/ivpu_drv.h b/drivers/accel/ivpu/ivpu_drv.h
index f1e7072449f1..ebc4b84f27b2 100644
--- a/drivers/accel/ivpu/ivpu_drv.h
+++ b/drivers/accel/ivpu/ivpu_drv.h
@@ -17,6 +17,7 @@
#include <uapi/drm/ivpu_accel.h>
#include "ivpu_mmu_context.h"
+#include "ivpu_ipc.h"
#define DRIVER_NAME "intel_vpu"
#define DRIVER_DESC "Driver for Intel NPU (Neural Processing Unit)"
@@ -120,7 +121,7 @@ struct ivpu_device {
struct list_head bo_list;
struct xarray submitted_jobs_xa;
- struct task_struct *job_done_thread;
+ struct ivpu_ipc_consumer job_done_consumer;
atomic64_t unique_id_counter;
diff --git a/drivers/accel/ivpu/ivpu_hw_37xx.c
b/drivers/accel/ivpu/ivpu_hw_37xx.c
index a172cfb1c31f..4ab1f14cf360 100644
--- a/drivers/accel/ivpu/ivpu_hw_37xx.c
+++ b/drivers/accel/ivpu/ivpu_hw_37xx.c
@@ -891,17 +891,20 @@ static void ivpu_hw_37xx_irq_noc_firewall_handler(struct
ivpu_device *vdev)
}
/* Handler for IRQs from VPU core (irqV) */
-static u32 ivpu_hw_37xx_irqv_handler(struct ivpu_device *vdev, int irq)
+static bool ivpu_hw_37xx_irqv_handler(struct ivpu_device *vdev, int irq, bool
*wake_thread)
{
u32 status = REGV_RD32(VPU_37XX_HOST_SS_ICB_STATUS_0) & ICB_0_IRQ_MASK;
+ if (!status)
+ return false;
+
REGV_WR32(VPU_37XX_HOST_SS_ICB_CLEAR_0, status);
if (REG_TEST_FLD(VPU_37XX_HOST_SS_ICB_STATUS_0, MMU_IRQ_0_INT, status))
ivpu_mmu_irq_evtq_handler(vdev);
if (REG_TEST_FLD(VPU_37XX_HOST_SS_ICB_STATUS_0, HOST_IPC_FIFO_INT,
status))
- ivpu_ipc_irq_handler(vdev);
+ ivpu_ipc_irq_handler(vdev, wake_thread);
if (REG_TEST_FLD(VPU_37XX_HOST_SS_ICB_STATUS_0, MMU_IRQ_1_INT, status))
ivpu_dbg(vdev, IRQ, "MMU sync complete\n");
@@ -918,17 +921,17 @@ static u32 ivpu_hw_37xx_irqv_handler(struct ivpu_device
*vdev, int irq)
if (REG_TEST_FLD(VPU_37XX_HOST_SS_ICB_STATUS_0, NOC_FIREWALL_INT,
status))
ivpu_hw_37xx_irq_noc_firewall_handler(vdev);
- return status;
+ return true;
}
/* Handler for IRQs from Buttress core (irqB) */
-static u32 ivpu_hw_37xx_irqb_handler(struct ivpu_device *vdev, int irq)
+static bool ivpu_hw_37xx_irqb_handler(struct ivpu_device *vdev, int irq)
{
u32 status = REGB_RD32(VPU_37XX_BUTTRESS_INTERRUPT_STAT) &
BUTTRESS_IRQ_MASK;
bool schedule_recovery = false;
- if (status == 0)
- return 0;
+ if (!status)
+ return false;
if (REG_TEST_FLD(VPU_37XX_BUTTRESS_INTERRUPT_STAT, FREQ_CHANGE, status))
ivpu_dbg(vdev, IRQ, "FREQ_CHANGE irq: %08x",
@@ -964,23 +967,27 @@ static u32 ivpu_hw_37xx_irqb_handler(struct ivpu_device
*vdev, int irq)
if (schedule_recovery)
ivpu_pm_schedule_recovery(vdev);
- return status;
+ return true;
}
static irqreturn_t ivpu_hw_37xx_irq_handler(int irq, void *ptr)
{
struct ivpu_device *vdev = ptr;
- u32 ret_irqv, ret_irqb;
+ bool irqv_handled, irqb_handled, wake_thread = false;
REGB_WR32(VPU_37XX_BUTTRESS_GLOBAL_INT_MASK, 0x1);
- ret_irqv = ivpu_hw_37xx_irqv_handler(vdev, irq);
- ret_irqb = ivpu_hw_37xx_irqb_handler(vdev, irq);
+ irqv_handled = ivpu_hw_37xx_irqv_handler(vdev, irq, &wake_thread);
+ irqb_handled = ivpu_hw_37xx_irqb_handler(vdev, irq);
/* Re-enable global interrupts to re-trigger MSI for pending interrupts
*/
REGB_WR32(VPU_37XX_BUTTRESS_GLOBAL_INT_MASK, 0x0);
- return IRQ_RETVAL(ret_irqb | ret_irqv);
+ if (wake_thread)
+ return IRQ_WAKE_THREAD;
+ if (irqv_handled || irqb_handled)
+ return IRQ_HANDLED;
+ return IRQ_NONE;
}
static void ivpu_hw_37xx_diagnose_failure(struct ivpu_device *vdev)
diff --git a/drivers/accel/ivpu/ivpu_hw_40xx.c
b/drivers/accel/ivpu/ivpu_hw_40xx.c
index f7e1f5c0667b..eba2fdef2ace 100644
--- a/drivers/accel/ivpu/ivpu_hw_40xx.c
+++ b/drivers/accel/ivpu/ivpu_hw_40xx.c
@@ -1047,13 +1047,12 @@ static void
ivpu_hw_40xx_irq_noc_firewall_handler(struct ivpu_device *vdev)
}
/* Handler for IRQs from VPU core (irqV) */
-static irqreturn_t ivpu_hw_40xx_irqv_handler(struct ivpu_device *vdev, int irq)
+static bool ivpu_hw_40xx_irqv_handler(struct ivpu_device *vdev, int irq, bool
*wake_thread)
{
u32 status = REGV_RD32(VPU_40XX_HOST_SS_ICB_STATUS_0) & ICB_0_IRQ_MASK;
- irqreturn_t ret = IRQ_NONE;
if (!status)
- return IRQ_NONE;
+ return false;
REGV_WR32(VPU_40XX_HOST_SS_ICB_CLEAR_0, status);
@@ -1061,7 +1060,7 @@ static irqreturn_t ivpu_hw_40xx_irqv_handler(struct
ivpu_device *vdev, int irq)
ivpu_mmu_irq_evtq_handler(vdev);
if (REG_TEST_FLD(VPU_40XX_HOST_SS_ICB_STATUS_0, HOST_IPC_FIFO_INT,
status))
- ret |= ivpu_ipc_irq_handler(vdev);
+ ivpu_ipc_irq_handler(vdev, wake_thread);
if (REG_TEST_FLD(VPU_40XX_HOST_SS_ICB_STATUS_0, MMU_IRQ_1_INT, status))
ivpu_dbg(vdev, IRQ, "MMU sync complete\n");
@@ -1078,17 +1077,17 @@ static irqreturn_t ivpu_hw_40xx_irqv_handler(struct
ivpu_device *vdev, int irq)
if (REG_TEST_FLD(VPU_40XX_HOST_SS_ICB_STATUS_0, NOC_FIREWALL_INT,
status))
ivpu_hw_40xx_irq_noc_firewall_handler(vdev);
- return ret;
+ return true;
}
/* Handler for IRQs from Buttress core (irqB) */
-static irqreturn_t ivpu_hw_40xx_irqb_handler(struct ivpu_device *vdev, int irq)
+static bool ivpu_hw_40xx_irqb_handler(struct ivpu_device *vdev, int irq)
{
bool schedule_recovery = false;
u32 status = REGB_RD32(VPU_40XX_BUTTRESS_INTERRUPT_STAT) &
BUTTRESS_IRQ_MASK;
- if (status == 0)
- return IRQ_NONE;
+ if (!status)
+ return false;
if (REG_TEST_FLD(VPU_40XX_BUTTRESS_INTERRUPT_STAT, FREQ_CHANGE, status))
ivpu_dbg(vdev, IRQ, "FREQ_CHANGE");
@@ -1140,26 +1139,27 @@ static irqreturn_t ivpu_hw_40xx_irqb_handler(struct
ivpu_device *vdev, int irq)
if (schedule_recovery)
ivpu_pm_schedule_recovery(vdev);
- return IRQ_HANDLED;
+ return true;
}
static irqreturn_t ivpu_hw_40xx_irq_handler(int irq, void *ptr)
{
+ bool irqv_handled, irqb_handled, wake_thread = false;
struct ivpu_device *vdev = ptr;
- irqreturn_t ret = IRQ_NONE;
REGB_WR32(VPU_40XX_BUTTRESS_GLOBAL_INT_MASK, 0x1);
- ret |= ivpu_hw_40xx_irqv_handler(vdev, irq);
- ret |= ivpu_hw_40xx_irqb_handler(vdev, irq);
+ irqv_handled = ivpu_hw_40xx_irqv_handler(vdev, irq, &wake_thread);
+ irqb_handled = ivpu_hw_40xx_irqb_handler(vdev, irq);
/* Re-enable global interrupts to re-trigger MSI for pending interrupts
*/
REGB_WR32(VPU_40XX_BUTTRESS_GLOBAL_INT_MASK, 0x0);
- if (ret & IRQ_WAKE_THREAD)
+ if (wake_thread)
return IRQ_WAKE_THREAD;
-
- return ret;
+ if (irqv_handled || irqb_handled)
+ return IRQ_HANDLED;
+ return IRQ_NONE;
}
static void ivpu_hw_40xx_diagnose_failure(struct ivpu_device *vdev)
diff --git a/drivers/accel/ivpu/ivpu_ipc.c b/drivers/accel/ivpu/ivpu_ipc.c
index 1dd4413dc88f..e86621f16f85 100644
--- a/drivers/accel/ivpu/ivpu_ipc.c
+++ b/drivers/accel/ivpu/ivpu_ipc.c
@@ -5,7 +5,6 @@
#include <linux/genalloc.h>
#include <linux/highmem.h>
-#include <linux/kthread.h>
#include <linux/pm_runtime.h>
#include <linux/wait.h>
@@ -18,19 +17,12 @@
#include "ivpu_pm.h"
#define IPC_MAX_RX_MSG 128
-#define IS_KTHREAD() (get_current()->flags & PF_KTHREAD)
struct ivpu_ipc_tx_buf {
struct ivpu_ipc_hdr ipc;
struct vpu_jsm_msg jsm;
};
-struct ivpu_ipc_rx_msg {
- struct list_head link;
- struct ivpu_ipc_hdr *ipc_hdr;
- struct vpu_jsm_msg *jsm_msg;
-};
-
static void ivpu_ipc_msg_dump(struct ivpu_device *vdev, char *c,
struct ivpu_ipc_hdr *ipc_hdr, u32 vpu_addr)
{
@@ -140,8 +132,49 @@ static void ivpu_ipc_tx(struct ivpu_device *vdev, u32
vpu_addr)
ivpu_hw_reg_ipc_tx_set(vdev, vpu_addr);
}
-void
-ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer
*cons, u32 channel)
+static void
+ivpu_ipc_rx_msg_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
+ struct ivpu_ipc_hdr *ipc_hdr, struct vpu_jsm_msg *jsm_msg)
+{
+ struct ivpu_ipc_info *ipc = vdev->ipc;
+ struct ivpu_ipc_rx_msg *rx_msg;
+
+ lockdep_assert_held(&ipc->cons_lock);
+ lockdep_assert_irqs_disabled();
+
+ rx_msg = kzalloc(sizeof(*rx_msg), GFP_ATOMIC);
+ if (!rx_msg) {
+ ivpu_ipc_rx_mark_free(vdev, ipc_hdr, jsm_msg);
+ return;
+ }
+
+ atomic_inc(&ipc->rx_msg_count);
+
+ rx_msg->ipc_hdr = ipc_hdr;
+ rx_msg->jsm_msg = jsm_msg;
+ rx_msg->callback = cons->rx_callback;
+
+ if (rx_msg->callback) {
+ list_add_tail(&rx_msg->link, &ipc->cb_msg_list);
+ } else {
+ spin_lock(&cons->rx_lock);
+ list_add_tail(&rx_msg->link, &cons->rx_msg_list);
+ spin_unlock(&cons->rx_lock);
+ wake_up(&cons->rx_msg_wq);
+ }
+}
+
+static void
+ivpu_ipc_rx_msg_del(struct ivpu_device *vdev, struct ivpu_ipc_rx_msg *rx_msg)
+{
+ list_del(&rx_msg->link);
+ ivpu_ipc_rx_mark_free(vdev, rx_msg->ipc_hdr, rx_msg->jsm_msg);
+ atomic_dec(&vdev->ipc->rx_msg_count);
+ kfree(rx_msg);
+}
+
+void ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer
*cons,
+ u32 channel, ivpu_ipc_rx_callback_t rx_callback)
{
struct ivpu_ipc_info *ipc = vdev->ipc;
@@ -150,13 +183,14 @@ ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct
ivpu_ipc_consumer *cons,
cons->tx_vpu_addr = 0;
cons->request_id = 0;
cons->aborted = false;
+ cons->rx_callback = rx_callback;
spin_lock_init(&cons->rx_lock);
INIT_LIST_HEAD(&cons->rx_msg_list);
init_waitqueue_head(&cons->rx_msg_wq);
- spin_lock_irq(&ipc->cons_list_lock);
+ spin_lock_irq(&ipc->cons_lock);
list_add_tail(&cons->link, &ipc->cons_list);
- spin_unlock_irq(&ipc->cons_list_lock);
+ spin_unlock_irq(&ipc->cons_lock);
}
void ivpu_ipc_consumer_del(struct ivpu_device *vdev, struct ivpu_ipc_consumer
*cons)
@@ -164,18 +198,13 @@ void ivpu_ipc_consumer_del(struct ivpu_device *vdev,
struct ivpu_ipc_consumer *c
struct ivpu_ipc_info *ipc = vdev->ipc;
struct ivpu_ipc_rx_msg *rx_msg, *r;
- spin_lock_irq(&ipc->cons_list_lock);
+ spin_lock_irq(&ipc->cons_lock);
list_del(&cons->link);
- spin_unlock_irq(&ipc->cons_list_lock);
+ spin_unlock_irq(&ipc->cons_lock);
spin_lock_irq(&cons->rx_lock);
- list_for_each_entry_safe(rx_msg, r, &cons->rx_msg_list, link) {
- list_del(&rx_msg->link);
- if (!cons->aborted)
- ivpu_ipc_rx_mark_free(vdev, rx_msg->ipc_hdr,
rx_msg->jsm_msg);
- atomic_dec(&ipc->rx_msg_count);
- kfree(rx_msg);
- }
+ list_for_each_entry_safe(rx_msg, r, &cons->rx_msg_list, link)
+ ivpu_ipc_rx_msg_del(vdev, rx_msg);
spin_unlock_irq(&cons->rx_lock);
ivpu_ipc_tx_release(vdev, cons->tx_vpu_addr);
@@ -205,15 +234,12 @@ ivpu_ipc_send(struct ivpu_device *vdev, struct
ivpu_ipc_consumer *cons, struct v
return ret;
}
-static int ivpu_ipc_rx_need_wakeup(struct ivpu_ipc_consumer *cons)
+static bool ivpu_ipc_rx_need_wakeup(struct ivpu_ipc_consumer *cons)
{
- int ret = 0;
-
- if (IS_KTHREAD())
- ret |= (kthread_should_stop() || kthread_should_park());
+ bool ret;
spin_lock_irq(&cons->rx_lock);
- ret |= !list_empty(&cons->rx_msg_list) || cons->aborted;
+ ret = !list_empty(&cons->rx_msg_list) || cons->aborted;
spin_unlock_irq(&cons->rx_lock);
return ret;
@@ -221,19 +247,18 @@ static int ivpu_ipc_rx_need_wakeup(struct
ivpu_ipc_consumer *cons)
int ivpu_ipc_receive(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
struct ivpu_ipc_hdr *ipc_buf,
- struct vpu_jsm_msg *ipc_payload, unsigned long timeout_ms)
+ struct vpu_jsm_msg *jsm_msg, unsigned long timeout_ms)
{
- struct ivpu_ipc_info *ipc = vdev->ipc;
struct ivpu_ipc_rx_msg *rx_msg;
int wait_ret, ret = 0;
+ if (drm_WARN_ONCE(&vdev->drm, cons->rx_callback, "Consumer works only
in async mode\n"))
+ return -EINVAL;
+
wait_ret = wait_event_timeout(cons->rx_msg_wq,
ivpu_ipc_rx_need_wakeup(cons),
msecs_to_jiffies(timeout_ms));
- if (IS_KTHREAD() && kthread_should_stop())
- return -EINTR;
-
if (wait_ret == 0)
return -ETIMEDOUT;
@@ -247,27 +272,23 @@ int ivpu_ipc_receive(struct ivpu_device *vdev, struct
ivpu_ipc_consumer *cons,
spin_unlock_irq(&cons->rx_lock);
return -EAGAIN;
}
- list_del(&rx_msg->link);
- spin_unlock_irq(&cons->rx_lock);
if (ipc_buf)
memcpy(ipc_buf, rx_msg->ipc_hdr, sizeof(*ipc_buf));
if (rx_msg->jsm_msg) {
- u32 size = min_t(int, rx_msg->ipc_hdr->data_size,
sizeof(*ipc_payload));
+ u32 size = min_t(int, rx_msg->ipc_hdr->data_size,
sizeof(*jsm_msg));
if (rx_msg->jsm_msg->result != VPU_JSM_STATUS_SUCCESS) {
ivpu_dbg(vdev, IPC, "IPC resp result error: %d\n",
rx_msg->jsm_msg->result);
ret = -EBADMSG;
}
- if (ipc_payload)
- memcpy(ipc_payload, rx_msg->jsm_msg, size);
+ if (jsm_msg)
+ memcpy(jsm_msg, rx_msg->jsm_msg, size);
}
- ivpu_ipc_rx_mark_free(vdev, rx_msg->ipc_hdr, rx_msg->jsm_msg);
- atomic_dec(&ipc->rx_msg_count);
- kfree(rx_msg);
-
+ ivpu_ipc_rx_msg_del(vdev, rx_msg);
+ spin_unlock_irq(&cons->rx_lock);
return ret;
}
@@ -280,7 +301,7 @@ ivpu_ipc_send_receive_internal(struct ivpu_device *vdev,
struct vpu_jsm_msg *req
struct ivpu_ipc_consumer cons;
int ret;
- ivpu_ipc_consumer_add(vdev, &cons, channel);
+ ivpu_ipc_consumer_add(vdev, &cons, channel, NULL);
ret = ivpu_ipc_send(vdev, &cons, req);
if (ret) {
@@ -359,35 +380,7 @@ ivpu_ipc_match_consumer(struct ivpu_device *vdev, struct
ivpu_ipc_consumer *cons
return false;
}
-static void
-ivpu_ipc_dispatch(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
- struct ivpu_ipc_hdr *ipc_hdr, struct vpu_jsm_msg *jsm_msg)
-{
- struct ivpu_ipc_info *ipc = vdev->ipc;
- struct ivpu_ipc_rx_msg *rx_msg;
-
- lockdep_assert_held(&ipc->cons_list_lock);
- lockdep_assert_irqs_disabled();
-
- rx_msg = kzalloc(sizeof(*rx_msg), GFP_ATOMIC);
- if (!rx_msg) {
- ivpu_ipc_rx_mark_free(vdev, ipc_hdr, jsm_msg);
- return;
- }
-
- atomic_inc(&ipc->rx_msg_count);
-
- rx_msg->ipc_hdr = ipc_hdr;
- rx_msg->jsm_msg = jsm_msg;
-
- spin_lock(&cons->rx_lock);
- list_add_tail(&rx_msg->link, &cons->rx_msg_list);
- spin_unlock(&cons->rx_lock);
-
- wake_up(&cons->rx_msg_wq);
-}
-
-int ivpu_ipc_irq_handler(struct ivpu_device *vdev)
+void ivpu_ipc_irq_handler(struct ivpu_device *vdev, bool *wake_thread)
{
struct ivpu_ipc_info *ipc = vdev->ipc;
struct ivpu_ipc_consumer *cons;
@@ -405,7 +398,7 @@ int ivpu_ipc_irq_handler(struct ivpu_device *vdev)
vpu_addr = ivpu_hw_reg_ipc_rx_addr_get(vdev);
if (vpu_addr == REG_IO_ERROR) {
ivpu_err_ratelimited(vdev, "Failed to read IPC rx addr
register\n");
- return -EIO;
+ return;
}
ipc_hdr = ivpu_to_cpu_addr(ipc->mem_rx, vpu_addr);
@@ -435,15 +428,15 @@ int ivpu_ipc_irq_handler(struct ivpu_device *vdev)
}
dispatched = false;
- spin_lock_irqsave(&ipc->cons_list_lock, flags);
+ spin_lock_irqsave(&ipc->cons_lock, flags);
list_for_each_entry(cons, &ipc->cons_list, link) {
if (ivpu_ipc_match_consumer(vdev, cons, ipc_hdr,
jsm_msg)) {
- ivpu_ipc_dispatch(vdev, cons, ipc_hdr, jsm_msg);
+ ivpu_ipc_rx_msg_add(vdev, cons, ipc_hdr,
jsm_msg);
dispatched = true;
break;
}
}
- spin_unlock_irqrestore(&ipc->cons_list_lock, flags);
+ spin_unlock_irqrestore(&ipc->cons_lock, flags);
if (!dispatched) {
ivpu_dbg(vdev, IPC, "IPC RX msg 0x%x dropped (no
consumer)\n", vpu_addr);
@@ -451,7 +444,28 @@ int ivpu_ipc_irq_handler(struct ivpu_device *vdev)
}
}
- return 0;
+ if (wake_thread)
+ *wake_thread = !list_empty(&ipc->cb_msg_list);
+}
+
+irqreturn_t ivpu_ipc_irq_thread_handler(struct ivpu_device *vdev)
+{
+ struct ivpu_ipc_info *ipc = vdev->ipc;
+ struct ivpu_ipc_rx_msg *rx_msg, *r;
+ struct list_head cb_msg_list;
+
+ INIT_LIST_HEAD(&cb_msg_list);
+
+ spin_lock_irq(&ipc->cons_lock);
+ list_splice_tail_init(&ipc->cb_msg_list, &cb_msg_list);
+ spin_unlock_irq(&ipc->cons_lock);
+
+ list_for_each_entry_safe(rx_msg, r, &cb_msg_list, link) {
+ rx_msg->callback(vdev, rx_msg->ipc_hdr, rx_msg->jsm_msg);
+ ivpu_ipc_rx_msg_del(vdev, rx_msg);
+ }
+
+ return IRQ_HANDLED;
}
int ivpu_ipc_init(struct ivpu_device *vdev)
@@ -486,10 +500,10 @@ int ivpu_ipc_init(struct ivpu_device *vdev)
goto err_free_rx;
}
+ spin_lock_init(&ipc->cons_lock);
INIT_LIST_HEAD(&ipc->cons_list);
- spin_lock_init(&ipc->cons_list_lock);
+ INIT_LIST_HEAD(&ipc->cb_msg_list);
drmm_mutex_init(&vdev->drm, &ipc->lock);
-
ivpu_ipc_reset(vdev);
return 0;
@@ -502,6 +516,13 @@ int ivpu_ipc_init(struct ivpu_device *vdev)
void ivpu_ipc_fini(struct ivpu_device *vdev)
{
+ struct ivpu_ipc_info *ipc = vdev->ipc;
+
+ drm_WARN_ON(&vdev->drm, ipc->on);
+ drm_WARN_ON(&vdev->drm, !list_empty(&ipc->cons_list));
+ drm_WARN_ON(&vdev->drm, !list_empty(&ipc->cb_msg_list));
+ drm_WARN_ON(&vdev->drm, atomic_read(&ipc->rx_msg_count) > 0);
+
ivpu_ipc_mem_fini(vdev);
}
@@ -518,22 +539,27 @@ void ivpu_ipc_disable(struct ivpu_device *vdev)
{
struct ivpu_ipc_info *ipc = vdev->ipc;
struct ivpu_ipc_consumer *cons, *c;
- unsigned long flags;
+ struct ivpu_ipc_rx_msg *rx_msg, *r;
+
+ drm_WARN_ON(&vdev->drm, !list_empty(&ipc->cb_msg_list));
mutex_lock(&ipc->lock);
ipc->on = false;
mutex_unlock(&ipc->lock);
- spin_lock_irqsave(&ipc->cons_list_lock, flags);
+ spin_lock_irq(&ipc->cons_lock);
list_for_each_entry_safe(cons, c, &ipc->cons_list, link) {
- if (cons->channel != VPU_IPC_CHAN_JOB_RET) {
- spin_lock(&cons->rx_lock);
+ spin_lock(&cons->rx_lock);
+ if (!cons->rx_callback)
cons->aborted = true;
- spin_unlock(&cons->rx_lock);
- }
+ list_for_each_entry_safe(rx_msg, r, &cons->rx_msg_list, link)
+ ivpu_ipc_rx_msg_del(vdev, rx_msg);
+ spin_unlock(&cons->rx_lock);
wake_up(&cons->rx_msg_wq);
}
- spin_unlock_irqrestore(&ipc->cons_list_lock, flags);
+ spin_unlock_irq(&ipc->cons_lock);
+
+ drm_WARN_ON(&vdev->drm, atomic_read(&ipc->rx_msg_count) > 0);
}
void ivpu_ipc_reset(struct ivpu_device *vdev)
diff --git a/drivers/accel/ivpu/ivpu_ipc.h b/drivers/accel/ivpu/ivpu_ipc.h
index 71b2e648dffd..40ca3cc4e61f 100644
--- a/drivers/accel/ivpu/ivpu_ipc.h
+++ b/drivers/accel/ivpu/ivpu_ipc.h
@@ -42,12 +42,24 @@ struct ivpu_ipc_hdr {
u8 status;
} __packed __aligned(IVPU_IPC_ALIGNMENT);
+typedef void (*ivpu_ipc_rx_callback_t)(struct ivpu_device *vdev,
+ struct ivpu_ipc_hdr *ipc_hdr,
+ struct vpu_jsm_msg *jsm_msg);
+
+struct ivpu_ipc_rx_msg {
+ struct list_head link;
+ struct ivpu_ipc_hdr *ipc_hdr;
+ struct vpu_jsm_msg *jsm_msg;
+ ivpu_ipc_rx_callback_t callback;
+};
+
struct ivpu_ipc_consumer {
struct list_head link;
u32 channel;
u32 tx_vpu_addr;
u32 request_id;
bool aborted;
+ ivpu_ipc_rx_callback_t rx_callback;
spinlock_t rx_lock; /* Protects rx_msg_list and aborted */
struct list_head rx_msg_list;
@@ -61,8 +73,9 @@ struct ivpu_ipc_info {
atomic_t rx_msg_count;
- spinlock_t cons_list_lock; /* Protects cons_list */
+ spinlock_t cons_lock; /* Protects cons_list and cb_msg_list */
struct list_head cons_list;
+ struct list_head cb_msg_list;
atomic_t request_id;
struct mutex lock; /* Lock on status */
@@ -76,14 +89,15 @@ void ivpu_ipc_enable(struct ivpu_device *vdev);
void ivpu_ipc_disable(struct ivpu_device *vdev);
void ivpu_ipc_reset(struct ivpu_device *vdev);
-int ivpu_ipc_irq_handler(struct ivpu_device *vdev);
+void ivpu_ipc_irq_handler(struct ivpu_device *vdev, bool *wake_thread);
+irqreturn_t ivpu_ipc_irq_thread_handler(struct ivpu_device *vdev);
void ivpu_ipc_consumer_add(struct ivpu_device *vdev, struct ivpu_ipc_consumer
*cons,
- u32 channel);
+ u32 channel, ivpu_ipc_rx_callback_t callback);
void ivpu_ipc_consumer_del(struct ivpu_device *vdev, struct ivpu_ipc_consumer
*cons);
int ivpu_ipc_receive(struct ivpu_device *vdev, struct ivpu_ipc_consumer *cons,
- struct ivpu_ipc_hdr *ipc_buf, struct vpu_jsm_msg
*ipc_payload,
+ struct ivpu_ipc_hdr *ipc_buf, struct vpu_jsm_msg *jsm_msg,
unsigned long timeout_ms);
int ivpu_ipc_send_receive_active(struct ivpu_device *vdev, struct vpu_jsm_msg
*req,
diff --git a/drivers/accel/ivpu/ivpu_job.c b/drivers/accel/ivpu/ivpu_job.c
index 796366d67984..7206cf9cdb4a 100644
--- a/drivers/accel/ivpu/ivpu_job.c
+++ b/drivers/accel/ivpu/ivpu_job.c
@@ -7,7 +7,6 @@
#include <linux/bitfield.h>
#include <linux/highmem.h>
-#include <linux/kthread.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <uapi/drm/ivpu_accel.h>
@@ -344,22 +343,6 @@ static int ivpu_job_done(struct ivpu_device *vdev, u32
job_id, u32 job_status)
return 0;
}
-static void ivpu_job_done_message(struct ivpu_device *vdev, void *msg)
-{
- struct vpu_ipc_msg_payload_job_done *payload;
- struct vpu_jsm_msg *job_ret_msg = msg;
- int ret;
-
- payload = (struct vpu_ipc_msg_payload_job_done *)&job_ret_msg->payload;
-
- ret = ivpu_job_done(vdev, payload->job_id, payload->job_status);
- if (ret)
- ivpu_err(vdev, "Failed to finish job %d: %d\n",
payload->job_id, ret);
-
- if (!ret && !xa_empty(&vdev->submitted_jobs_xa))
- ivpu_start_job_timeout_detection(vdev);
-}
-
void ivpu_jobs_abort_all(struct ivpu_device *vdev)
{
struct ivpu_job *job;
@@ -567,65 +550,36 @@ int ivpu_submit_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
return ret;
}
-static int ivpu_job_done_thread(void *arg)
+static void
+ivpu_job_done_callback(struct ivpu_device *vdev, struct ivpu_ipc_hdr *ipc_hdr,
+ struct vpu_jsm_msg *jsm_msg)
{
- struct ivpu_device *vdev = (struct ivpu_device *)arg;
- struct ivpu_ipc_consumer cons;
- struct vpu_jsm_msg jsm_msg;
- unsigned int timeout;
+ struct vpu_ipc_msg_payload_job_done *payload;
int ret;
- ivpu_dbg(vdev, JOB, "Started %s\n", __func__);
-
- ivpu_ipc_consumer_add(vdev, &cons, VPU_IPC_CHAN_JOB_RET);
-
- while (!kthread_should_stop()) {
- ret = ivpu_ipc_receive(vdev, &cons, NULL, &jsm_msg, timeout);
- if (!ret)
- ivpu_job_done_message(vdev, &jsm_msg);
-
- if (kthread_should_park()) {
- ivpu_dbg(vdev, JOB, "Parked %s\n", __func__);
- kthread_parkme();
- ivpu_dbg(vdev, JOB, "Unparked %s\n", __func__);
- }
+ if (!jsm_msg) {
+ ivpu_err(vdev, "IPC message has no JSM payload\n");
+ return;
}
- ivpu_ipc_consumer_del(vdev, &cons);
-
- ivpu_jobs_abort_all(vdev);
-
- ivpu_dbg(vdev, JOB, "Stopped %s\n", __func__);
- return 0;
-}
-
-int ivpu_job_done_thread_init(struct ivpu_device *vdev)
-{
- struct task_struct *thread;
-
- thread = kthread_run(&ivpu_job_done_thread, (void *)vdev,
"ivpu_job_done_thread");
- if (IS_ERR(thread)) {
- ivpu_err(vdev, "Failed to start job completion thread\n");
- return -EIO;
+ if (jsm_msg->result != VPU_JSM_STATUS_SUCCESS) {
+ ivpu_err(vdev, "Invalid JSM message result: %d\n",
jsm_msg->result);
+ return;
}
- vdev->job_done_thread = thread;
-
- return 0;
-}
-
-void ivpu_job_done_thread_fini(struct ivpu_device *vdev)
-{
- kthread_unpark(vdev->job_done_thread);
- kthread_stop(vdev->job_done_thread);
+ payload = (struct vpu_ipc_msg_payload_job_done *)&jsm_msg->payload;
+ ret = ivpu_job_done(vdev, payload->job_id, payload->job_status);
+ if (!ret && !xa_empty(&vdev->submitted_jobs_xa))
+ ivpu_start_job_timeout_detection(vdev);
}
-void ivpu_job_done_thread_disable(struct ivpu_device *vdev)
+void ivpu_job_done_consumer_init(struct ivpu_device *vdev)
{
- kthread_park(vdev->job_done_thread);
+ ivpu_ipc_consumer_add(vdev, &vdev->job_done_consumer,
+ VPU_IPC_CHAN_JOB_RET, ivpu_job_done_callback);
}
-void ivpu_job_done_thread_enable(struct ivpu_device *vdev)
+void ivpu_job_done_consumer_fini(struct ivpu_device *vdev)
{
- kthread_unpark(vdev->job_done_thread);
+ ivpu_ipc_consumer_del(vdev, &vdev->job_done_consumer);
}
diff --git a/drivers/accel/ivpu/ivpu_job.h b/drivers/accel/ivpu/ivpu_job.h
index 4b604c90041e..45a2f2ec82e5 100644
--- a/drivers/accel/ivpu/ivpu_job.h
+++ b/drivers/accel/ivpu/ivpu_job.h
@@ -59,10 +59,8 @@ int ivpu_submit_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
void ivpu_cmdq_release_all(struct ivpu_file_priv *file_priv);
void ivpu_cmdq_reset_all_contexts(struct ivpu_device *vdev);
-int ivpu_job_done_thread_init(struct ivpu_device *vdev);
-void ivpu_job_done_thread_fini(struct ivpu_device *vdev);
-void ivpu_job_done_thread_disable(struct ivpu_device *vdev);
-void ivpu_job_done_thread_enable(struct ivpu_device *vdev);
+void ivpu_job_done_consumer_init(struct ivpu_device *vdev);
+void ivpu_job_done_consumer_fini(struct ivpu_device *vdev);
void ivpu_jobs_abort_all(struct ivpu_device *vdev);
--
2.42.0
