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path: root/drivers/net/mlx4/fw.c
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Diffstat (limited to 'drivers/net/mlx4/fw.c')
-rw-r--r--drivers/net/mlx4/fw.c27
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c
index cfa5cc07233..e7ca118c8df 100644
--- a/drivers/net/mlx4/fw.c
+++ b/drivers/net/mlx4/fw.c
@@ -37,6 +37,10 @@
#include "fw.h"
#include "icm.h"
+enum {
+ MLX4_COMMAND_INTERFACE_REV = 1
+};
+
extern void __buggy_use_of_MLX4_GET(void);
extern void __buggy_use_of_MLX4_PUT(void);
@@ -452,10 +456,12 @@ int mlx4_QUERY_FW(struct mlx4_dev *dev)
u32 *outbox;
int err = 0;
u64 fw_ver;
+ u16 cmd_if_rev;
u8 lg;
#define QUERY_FW_OUT_SIZE 0x100
#define QUERY_FW_VER_OFFSET 0x00
+#define QUERY_FW_CMD_IF_REV_OFFSET 0x0a
#define QUERY_FW_MAX_CMD_OFFSET 0x0f
#define QUERY_FW_ERR_START_OFFSET 0x30
#define QUERY_FW_ERR_SIZE_OFFSET 0x38
@@ -477,21 +483,36 @@ int mlx4_QUERY_FW(struct mlx4_dev *dev)
MLX4_GET(fw_ver, outbox, QUERY_FW_VER_OFFSET);
/*
- * FW subminor version is at more signifant bits than minor
+ * FW subminor version is at more significant bits than minor
* version, so swap here.
*/
dev->caps.fw_ver = (fw_ver & 0xffff00000000ull) |
((fw_ver & 0xffff0000ull) >> 16) |
((fw_ver & 0x0000ffffull) << 16);
+ MLX4_GET(cmd_if_rev, outbox, QUERY_FW_CMD_IF_REV_OFFSET);
+ if (cmd_if_rev != MLX4_COMMAND_INTERFACE_REV) {
+ mlx4_err(dev, "Installed FW has unsupported "
+ "command interface revision %d.\n",
+ cmd_if_rev);
+ mlx4_err(dev, "(Installed FW version is %d.%d.%03d)\n",
+ (int) (dev->caps.fw_ver >> 32),
+ (int) (dev->caps.fw_ver >> 16) & 0xffff,
+ (int) dev->caps.fw_ver & 0xffff);
+ mlx4_err(dev, "This driver version supports only revision %d.\n",
+ MLX4_COMMAND_INTERFACE_REV);
+ err = -ENODEV;
+ goto out;
+ }
+
MLX4_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
cmd->max_cmds = 1 << lg;
- mlx4_dbg(dev, "FW version %d.%d.%03d, max commands %d\n",
+ mlx4_dbg(dev, "FW version %d.%d.%03d (cmd intf rev %d), max commands %d\n",
(int) (dev->caps.fw_ver >> 32),
(int) (dev->caps.fw_ver >> 16) & 0xffff,
(int) dev->caps.fw_ver & 0xffff,
- cmd->max_cmds);
+ cmd_if_rev, cmd->max_cmds);
MLX4_GET(fw->catas_offset, outbox, QUERY_FW_ERR_START_OFFSET);
MLX4_GET(fw->catas_size, outbox, QUERY_FW_ERR_SIZE_OFFSET);