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gpu: nvgpu: Move interrupt ISR code to common

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This is one of the steps in restructuring of interrupt code.
- Move ISR logic to common code. This will allow us to add mixed ASIL
error handling levels.
- Modify nonstall ISR to use threaded interrupts. Bottom half of
nonstall ISR will run nonstall operations instead of adding work to
workqueues.
- Remove nonstall workqueue implementation.

JIRA NVGPU-6351

Change-Id: I5f891b0de4b0c34f6ac05522a5da08dc36221aa6
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2467713
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Vedashree Vidwans
2021-01-07 21:55:47 -08:00
committed by mobile promotions
parent ecfd675d9b
commit e445b57b04
8 changed files with 269 additions and 172 deletions
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21
drivers/gpu/nvgpu/os/linux/pci.c
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@@ -23,6 +23,7 @@
#include <nvgpu/nvhost.h>
#include <nvgpu/nvgpu_common.h>
#include <nvgpu/kmem.h>
#include <nvgpu/mc.h>
#include <nvgpu/enabled.h>
#include <nvgpu/nvlink_probe.h>
#include <nvgpu/soc.h>
@@ -34,7 +35,6 @@
#include "nvlink.h"
#include "module.h"
#include "intr.h"
#include "sysfs.h"
#include "os_linux.h"
#include "platform_gk20a.h"
@@ -323,11 +323,8 @@ static struct pci_device_id nvgpu_pci_table[] = {
static irqreturn_t nvgpu_pci_isr(int irq, void *dev_id)
{
struct gk20a *g = dev_id;
irqreturn_t ret_stall;
irqreturn_t ret_nonstall;
ret_stall = nvgpu_intr_stall(g);
ret_nonstall = nvgpu_intr_nonstall(g);
u32 ret_stall = nvgpu_intr_stall_isr(g);
u32 ret_nonstall = nvgpu_intr_nonstall_isr(g);
#if defined(CONFIG_PCI_MSI)
/* Send MSI EOI */
@@ -335,14 +332,22 @@ static irqreturn_t nvgpu_pci_isr(int irq, void *dev_id)
g->ops.xve.rearm_msi(g);
#endif
return (ret_stall == IRQ_NONE) ? ret_nonstall : IRQ_WAKE_THREAD;
if ((ret_stall == NVGPU_INTR_HANDLE) ||
(ret_nonstall == NVGPU_INTR_HANDLE)) {
return IRQ_WAKE_THREAD;
}
return IRQ_NONE;
}
static irqreturn_t nvgpu_pci_intr_thread(int irq, void *dev_id)
{
struct gk20a *g = dev_id;
return nvgpu_intr_thread_stall(g);
nvgpu_intr_stall_handle(g);
nvgpu_intr_nonstall_handle(g);
return IRQ_HANDLED;
}
static int nvgpu_pci_init_support(struct pci_dev *pdev)