common/cnxk: fix device MSIX greater than default value
Checks
Commit Message
Handling the case where number of MSIX interrupts are greater
than default value i.e. PLT_MAX_RXTX_INTR_VEC_ID. On PCI probe
device is queried for supported MSIX interrupts, and respective
interrupt resources are reallocated with this value. Same MSIX
count should be used while registering new interrupt vectors.
Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
Signed-off-by: Harman Kalra <hkalra@marvell.com>
---
drivers/common/cnxk/roc_irq.c | 13 +++----------
1 file changed, 3 insertions(+), 10 deletions(-)
Comments
On Mon, Nov 1, 2021 at 6:44 PM Harman Kalra <hkalra@marvell.com> wrote:
>
> Handling the case where number of MSIX interrupts are greater
> than default value i.e. PLT_MAX_RXTX_INTR_VEC_ID. On PCI probe
> device is queried for supported MSIX interrupts, and respective
> interrupt resources are reallocated with this value. Same MSIX
> count should be used while registering new interrupt vectors.
>
> Fixes: d61138d4f0e2 ("drivers: remove direct access to interrupt handle")
I don't think the issue comes from this change.
I'd rather flag:
Fixes: 8cb5d08db940 ("interrupts: extend event list")
>
> Signed-off-by: Harman Kalra <hkalra@marvell.com>
@@ -14,7 +14,8 @@
#include <unistd.h>
#define MSIX_IRQ_SET_BUF_LEN \
- (sizeof(struct vfio_irq_set) + sizeof(int) * (PLT_MAX_RXTX_INTR_VEC_ID))
+ (sizeof(struct vfio_irq_set) + sizeof(int) * \
+ (plt_intr_max_intr_get(intr_handle)))
static int
irq_get_info(struct plt_intr_handle *intr_handle)
@@ -34,7 +35,7 @@ irq_get_info(struct plt_intr_handle *intr_handle)
plt_base_dbg("Flags=0x%x index=0x%x count=0x%x max_intr_vec_id=0x%x",
irq.flags, irq.index, irq.count, PLT_MAX_RXTX_INTR_VEC_ID);
- if (irq.count > PLT_MAX_RXTX_INTR_VEC_ID) {
+ if (irq.count == 0) {
plt_err("HW max=%d > PLT_MAX_RXTX_INTR_VEC_ID: %d", irq.count,
PLT_MAX_RXTX_INTR_VEC_ID);
plt_intr_max_intr_set(intr_handle, PLT_MAX_RXTX_INTR_VEC_ID);
@@ -92,14 +93,6 @@ irq_init(struct plt_intr_handle *intr_handle)
int32_t *fd_ptr;
uint32_t i;
- if (plt_intr_max_intr_get(intr_handle) >
- PLT_MAX_RXTX_INTR_VEC_ID) {
- plt_err("Max_intr=%d greater than PLT_MAX_RXTX_INTR_VEC_ID=%d",
- plt_intr_max_intr_get(intr_handle),
- PLT_MAX_RXTX_INTR_VEC_ID);
- return -ERANGE;
- }
-
len = sizeof(struct vfio_irq_set) +
sizeof(int32_t) * plt_intr_max_intr_get(intr_handle);