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authorMajd Dibbiny <majd@mellanox.com>2015-10-14 17:43:46 +0300
committerDavid S. Miller <davem@davemloft.net>2015-10-14 19:14:42 -0700
commit89d44f0a6c732db23b219be708e2fe1e03ee4842 (patch)
treef8a0aa4f622b8a79ae070015e1e73e7ec0b87526 /include
parentfd76ee4da55abb21babfc69310d321b9cb9a32e0 (diff)
net/mlx5_core: Add pci error handlers to mlx5_core driver
This patch implement the pci_error_handlers for mlx5_core which allow the driver to recover from PCI error. Once an error is detected in the PCI, the mlx5_pci_err_detected is called and it: 1) Marks the device to be in 'Internal Error' state. 2) Dispatches an event to the mlx5_ib to flush all the outstanding cqes with error. 3) Returns all the on going commands with error. 4) Unloads the driver. Afterwards, the FW is reset and mlx5_pci_slot_reset is called and it enables the device and restore it's pci state. If the later succeeds, mlx5_pci_resume is called, and it loads the SW stack. Signed-off-by: Majd Dibbiny <majd@mellanox.com> Signed-off-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mlx5/driver.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 62b7d439813d..9aba8d5139fa 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -487,8 +487,26 @@ struct mlx5_priv {
spinlock_t ctx_lock;
};
+enum mlx5_device_state {
+ MLX5_DEVICE_STATE_UP,
+ MLX5_DEVICE_STATE_INTERNAL_ERROR,
+};
+
+enum mlx5_interface_state {
+ MLX5_INTERFACE_STATE_DOWN,
+ MLX5_INTERFACE_STATE_UP,
+};
+
+enum mlx5_pci_status {
+ MLX5_PCI_STATUS_DISABLED,
+ MLX5_PCI_STATUS_ENABLED,
+};
+
struct mlx5_core_dev {
struct pci_dev *pdev;
+ /* sync pci state */
+ struct mutex pci_status_mutex;
+ enum mlx5_pci_status pci_status;
u8 rev_id;
char board_id[MLX5_BOARD_ID_LEN];
struct mlx5_cmd cmd;
@@ -497,6 +515,10 @@ struct mlx5_core_dev {
u32 hca_caps_max[MLX5_CAP_NUM][MLX5_UN_SZ_DW(hca_cap_union)];
phys_addr_t iseg_base;
struct mlx5_init_seg __iomem *iseg;
+ enum mlx5_device_state state;
+ /* sync interface state */
+ struct mutex intf_state_mutex;
+ enum mlx5_interface_state interface_state;
void (*event) (struct mlx5_core_dev *dev,
enum mlx5_dev_event event,
unsigned long param);