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net/mlx5: FPGA, Handle QP error event

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Add handlers for this event to perform graceful teardown of the device.

Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Adi Nissim <adin@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Ilan Tayari 2018-05-29 16:39:04 -07:00 committed by Saeed Mahameed
parent 250a42b6a7
commit 98db16bab5
1 changed files with 24 additions and 4 deletions
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28
drivers/net/ethernet/mellanox/mlx5/core/fpga/core.c
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@ -50,6 +50,11 @@ static const char *const mlx5_fpga_error_strings[] = {
"Temperature Critical", "Temperature Critical",
}; };
static const char * const mlx5_fpga_qp_error_strings[] = {
"Null Syndrome",
"Retry Counter Expired",
"RNR Expired",
};
static struct mlx5_fpga_device *mlx5_fpga_device_alloc(void) static struct mlx5_fpga_device *mlx5_fpga_device_alloc(void)
{ {
struct mlx5_fpga_device *fdev = NULL; struct mlx5_fpga_device *fdev = NULL;
@ -271,23 +276,38 @@ static const char *mlx5_fpga_syndrome_to_string(u8 syndrome)
return "Unknown"; return "Unknown";
} }
static const char *mlx5_fpga_qp_syndrome_to_string(u8 syndrome)
{
if (syndrome < ARRAY_SIZE(mlx5_fpga_qp_error_strings))
return mlx5_fpga_qp_error_strings[syndrome];
return "Unknown";
}
void mlx5_fpga_event(struct mlx5_core_dev *mdev, u8 event, void *data) void mlx5_fpga_event(struct mlx5_core_dev *mdev, u8 event, void *data)
{ {
struct mlx5_fpga_device *fdev = mdev->fpga; struct mlx5_fpga_device *fdev = mdev->fpga;
const char *event_name; const char *event_name;
bool teardown = false; bool teardown = false;
unsigned long flags; unsigned long flags;
u32 fpga_qpn;
u8 syndrome; u8 syndrome;
if (event != MLX5_EVENT_TYPE_FPGA_ERROR) { switch (event) {
case MLX5_EVENT_TYPE_FPGA_ERROR:
syndrome = MLX5_GET(fpga_error_event, data, syndrome);
event_name = mlx5_fpga_syndrome_to_string(syndrome);
break;
case MLX5_EVENT_TYPE_FPGA_QP_ERROR:
syndrome = MLX5_GET(fpga_qp_error_event, data, syndrome);
event_name = mlx5_fpga_qp_syndrome_to_string(syndrome);
fpga_qpn = MLX5_GET(fpga_qp_error_event, data, fpga_qpn);
break;
default:
mlx5_fpga_warn_ratelimited(fdev, "Unexpected event %u\n", mlx5_fpga_warn_ratelimited(fdev, "Unexpected event %u\n",
event); event);
return; return;
} }
syndrome = MLX5_GET(fpga_error_event, data, syndrome);
event_name = mlx5_fpga_syndrome_to_string(syndrome);
spin_lock_irqsave(&fdev->state_lock, flags); spin_lock_irqsave(&fdev->state_lock, flags);
switch (fdev->state) { switch (fdev->state) {
case MLX5_FPGA_STATUS_SUCCESS: case MLX5_FPGA_STATUS_SUCCESS: