diff options
Diffstat (limited to 'drivers/scsi/cxlflash/superpipe.c')
| -rw-r--r-- | drivers/scsi/cxlflash/superpipe.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/scsi/cxlflash/superpipe.c b/drivers/scsi/cxlflash/superpipe.c index 2fe79df5c73c..e489d89cbb45 100644 --- a/drivers/scsi/cxlflash/superpipe.c +++ b/drivers/scsi/cxlflash/superpipe.c @@ -14,8 +14,9 @@ #include <linux/delay.h> #include <linux/file.h> +#include <linux/interrupt.h> +#include <linux/pci.h> #include <linux/syscalls.h> -#include <misc/cxl.h> #include <asm/unaligned.h> #include <scsi/scsi.h> @@ -269,6 +270,7 @@ static int afu_attach(struct cxlflash_cfg *cfg, struct ctx_info *ctxi) int rc = 0; struct hwq *hwq = get_hwq(afu, PRIMARY_HWQ); u64 val; + int i; /* Unlock cap and restrict user to read/write cmds in translated mode */ readq_be(&ctrl_map->mbox_r); @@ -282,6 +284,19 @@ static int afu_attach(struct cxlflash_cfg *cfg, struct ctx_info *ctxi) goto out; } + if (afu_is_ocxl_lisn(afu)) { + /* Set up the LISN effective address for each interrupt */ + for (i = 0; i < ctxi->irqs; i++) { + val = cfg->ops->get_irq_objhndl(ctxi->ctx, i); + writeq_be(val, &ctrl_map->lisn_ea[i]); + } + + /* Use primary HWQ PASID as identifier for all interrupts */ + val = hwq->ctx_hndl; + writeq_be(SISL_LISN_PASID(val, val), &ctrl_map->lisn_pasid[0]); + writeq_be(SISL_LISN_PASID(0UL, val), &ctrl_map->lisn_pasid[1]); + } + /* Set up MMIO registers pointing to the RHT */ writeq_be((u64)ctxi->rht_start, &ctrl_map->rht_start); val = SISL_RHT_CNT_ID((u64)MAX_RHT_PER_CONTEXT, (u64)(hwq->ctx_hndl)); @@ -974,6 +989,10 @@ static int cxlflash_disk_detach(struct scsi_device *sdev, * theoretically never occur), every call into this routine results * in a complete freeing of a context. * + * Detaching the LUN is typically an ioctl() operation and the underlying + * code assumes that ioctl_rwsem has been acquired as a reader. To support + * that design point, the semaphore is acquired and released around detach. + * * Return: 0 on success */ static int cxlflash_cxl_release(struct inode *inode, struct file *file) @@ -1012,9 +1031,11 @@ static int cxlflash_cxl_release(struct inode *inode, struct file *file) dev_dbg(dev, "%s: close for ctxid=%d\n", __func__, ctxid); + down_read(&cfg->ioctl_rwsem); detach.context_id = ctxi->ctxid; list_for_each_entry_safe(lun_access, t, &ctxi->luns, list) _cxlflash_disk_detach(lun_access->sdev, ctxi, &detach); + up_read(&cfg->ioctl_rwsem); out_release: cfg->ops->fd_release(inode, file); out: |