IB/hfi1: Change QSFP functions to use resource reservation
Remove the mutex guarding each operation in favor the ASIC
resource acquire/release. Push the resource acquire/release,
above each operation call to allow exclusive access across
multiple operations.
Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/staging/rdma/hfi1/hfi.h b/drivers/staging/rdma/hfi1/hfi.h
index e71a1c2..108015c 100644
--- a/drivers/staging/rdma/hfi1/hfi.h
+++ b/drivers/staging/rdma/hfi1/hfi.h
@@ -1048,8 +1048,6 @@
struct platform_config platform_config;
struct platform_config_cache pcfg_cache;
- /* control high-level access to qsfp */
- struct mutex qsfp_i2c_mutex;
struct diag_client *diag_client;
spinlock_t hfi1_diag_trans_lock; /* protect diag observer ops */
@@ -1938,6 +1936,18 @@
write_csr(dd, DCC_CFG_LED_CNTRL, 0x10);
}
+/* return the i2c resource given the target */
+static inline u32 i2c_target(u32 target)
+{
+ return target ? CR_I2C2 : CR_I2C1;
+}
+
+/* return the i2c chain chip resource that this HFI uses for QSFP */
+static inline u32 qsfp_resource(struct hfi1_devdata *dd)
+{
+ return i2c_target(dd->hfi1_id);
+}
+
int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp);
#endif /* _HFI1_KERNEL_H */