scsi: cxlflash: Cancel scheduled workers before stopping AFU

[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / cxlflash / common.h

diff --git a/drivers/scsi/cxlflash/common.h b/drivers/scsi/cxlflash/common.h
index 0e9de5d62da25f56bcb0645a35a98582896fc37b..d11dcc59ff46b40b058e69b96fe01d4c09ca34d3 100644 (file)
--- a/drivers/scsi/cxlflash/common.h
+++ b/drivers/scsi/cxlflash/common.h
@@ -54,6 +54,9 @@ extern const struct file_operations cxlflash_cxl_fops;
 /* RRQ for master issued cmds */
 #define NUM_RRQ_ENTRY                   CXLFLASH_MAX_CMDS
 
+/* SQ for master issued cmds */
+#define NUM_SQ_ENTRY                   CXLFLASH_MAX_CMDS
+
 
 static inline void check_sizes(void)
 {
@@ -155,8 +158,8 @@ static inline struct afu_cmd *sc_to_afucz(struct scsi_cmnd *sc)
 
 struct afu {
        /* Stuff requiring alignment go first. */
-
-       u64 rrq_entry[NUM_RRQ_ENTRY];   /* 2K RRQ */
+       struct sisl_ioarcb sq[NUM_SQ_ENTRY];            /* 16K SQ */
+       u64 rrq_entry[NUM_RRQ_ENTRY];                   /* 2K RRQ */
 
        /* Beware of alignment till here. Preferably introduce new
         * fields after this point
@@ -171,9 +174,13 @@ struct afu {
        struct sisl_host_map __iomem *host_map;         /* MC host map */
        struct sisl_ctrl_map __iomem *ctrl_map;         /* MC control map */
 
-       struct kref mapcount;
-
        ctx_hndl_t ctx_hndl;    /* master's context handle */
+
+       atomic_t hsq_credits;
+       spinlock_t hsq_slock;
+       struct sisl_ioarcb *hsq_start;
+       struct sisl_ioarcb *hsq_end;
+       struct sisl_ioarcb *hsq_curr;
        u64 *hrrq_start;
        u64 *hrrq_end;
        u64 *hrrq_curr;
@@ -191,6 +198,23 @@ struct afu {
 
 };
 
+static inline bool afu_is_cmd_mode(struct afu *afu, u64 cmd_mode)
+{
+       u64 afu_cap = afu->interface_version >> SISL_INTVER_CAP_SHIFT;
+
+       return afu_cap & cmd_mode;
+}
+
+static inline bool afu_is_sq_cmd_mode(struct afu *afu)
+{
+       return afu_is_cmd_mode(afu, SISL_INTVER_CAP_SQ_CMD_MODE);
+}
+
+static inline bool afu_is_ioarrin_cmd_mode(struct afu *afu)
+{
+       return afu_is_cmd_mode(afu, SISL_INTVER_CAP_IOARRIN_CMD_MODE);
+}
+
 static inline u64 lun_to_lunid(u64 lun)
 {
        __be64 lun_id;