diff options
Diffstat (limited to 'drivers/scsi/ibmvscsi')
| -rw-r--r-- | drivers/scsi/ibmvscsi/Makefile | 2 | ||||
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvscsi.c | 46 | ||||
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvscsi.h | 32 | ||||
| -rw-r--r-- | drivers/scsi/ibmvscsi/iseries_vscsi.c | 37 | ||||
| -rw-r--r-- | drivers/scsi/ibmvscsi/rpa_vscsi.c | 113 |
5 files changed, 130 insertions, 100 deletions
diff --git a/drivers/scsi/ibmvscsi/Makefile b/drivers/scsi/ibmvscsi/Makefile index f67d9efc7a99..6ac0633d5452 100644 --- a/drivers/scsi/ibmvscsi/Makefile +++ b/drivers/scsi/ibmvscsi/Makefile @@ -1,9 +1,7 @@ obj-$(CONFIG_SCSI_IBMVSCSI) += ibmvscsic.o ibmvscsic-y += ibmvscsi.o -ifndef CONFIG_PPC_PSERIES ibmvscsic-$(CONFIG_PPC_ISERIES) += iseries_vscsi.o -endif ibmvscsic-$(CONFIG_PPC_PSERIES) += rpa_vscsi.o obj-$(CONFIG_SCSI_IBMVSCSIS) += ibmvstgt.o diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index 93bd01b1e4b5..cda0cc3d182f 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -70,6 +70,7 @@ #include <linux/moduleparam.h> #include <linux/dma-mapping.h> #include <linux/delay.h> +#include <asm/firmware.h> #include <asm/vio.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -92,6 +93,8 @@ static struct scsi_transport_template *ibmvscsi_transport_template; #define IBMVSCSI_VERSION "1.5.8" +static struct ibmvscsi_ops *ibmvscsi_ops; + MODULE_DESCRIPTION("IBM Virtual SCSI"); MODULE_AUTHOR("Dave Boutcher"); MODULE_LICENSE("GPL"); @@ -509,8 +512,8 @@ static void ibmvscsi_reset_host(struct ibmvscsi_host_data *hostdata) atomic_set(&hostdata->request_limit, 0); purge_requests(hostdata, DID_ERROR); - if ((ibmvscsi_reset_crq_queue(&hostdata->queue, hostdata)) || - (ibmvscsi_send_crq(hostdata, 0xC001000000000000LL, 0)) || + if ((ibmvscsi_ops->reset_crq_queue(&hostdata->queue, hostdata)) || + (ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0)) || (vio_enable_interrupts(to_vio_dev(hostdata->dev)))) { atomic_set(&hostdata->request_limit, -1); dev_err(hostdata->dev, "error after reset\n"); @@ -615,7 +618,7 @@ static int ibmvscsi_send_srp_event(struct srp_event_struct *evt_struct, } if ((rc = - ibmvscsi_send_crq(hostdata, crq_as_u64[0], crq_as_u64[1])) != 0) { + ibmvscsi_ops->send_crq(hostdata, crq_as_u64[0], crq_as_u64[1])) != 0) { list_del(&evt_struct->list); del_timer(&evt_struct->timer); @@ -1214,8 +1217,8 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq, case 0x01: /* Initialization message */ dev_info(hostdata->dev, "partner initialized\n"); /* Send back a response */ - if ((rc = ibmvscsi_send_crq(hostdata, - 0xC002000000000000LL, 0)) == 0) { + if ((rc = ibmvscsi_ops->send_crq(hostdata, + 0xC002000000000000LL, 0)) == 0) { /* Now login */ send_srp_login(hostdata); } else { @@ -1240,10 +1243,10 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq, /* We need to re-setup the interpartition connection */ dev_info(hostdata->dev, "Re-enabling adapter!\n"); purge_requests(hostdata, DID_REQUEUE); - if ((ibmvscsi_reenable_crq_queue(&hostdata->queue, - hostdata)) || - (ibmvscsi_send_crq(hostdata, - 0xC001000000000000LL, 0))) { + if ((ibmvscsi_ops->reenable_crq_queue(&hostdata->queue, + hostdata)) || + (ibmvscsi_ops->send_crq(hostdata, + 0xC001000000000000LL, 0))) { atomic_set(&hostdata->request_limit, -1); dev_err(hostdata->dev, "error after enable\n"); @@ -1253,10 +1256,10 @@ void ibmvscsi_handle_crq(struct viosrp_crq *crq, crq->format); purge_requests(hostdata, DID_ERROR); - if ((ibmvscsi_reset_crq_queue(&hostdata->queue, - hostdata)) || - (ibmvscsi_send_crq(hostdata, - 0xC001000000000000LL, 0))) { + if ((ibmvscsi_ops->reset_crq_queue(&hostdata->queue, + hostdata)) || + (ibmvscsi_ops->send_crq(hostdata, + 0xC001000000000000LL, 0))) { atomic_set(&hostdata->request_limit, -1); dev_err(hostdata->dev, "error after reset\n"); @@ -1579,7 +1582,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id) atomic_set(&hostdata->request_limit, -1); hostdata->host->max_sectors = 32 * 8; /* default max I/O 32 pages */ - rc = ibmvscsi_init_crq_queue(&hostdata->queue, hostdata, max_requests); + rc = ibmvscsi_ops->init_crq_queue(&hostdata->queue, hostdata, max_requests); if (rc != 0 && rc != H_RESOURCE) { dev_err(&vdev->dev, "couldn't initialize crq. rc=%d\n", rc); goto init_crq_failed; @@ -1608,7 +1611,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id) * to fail if the other end is not acive. In that case we don't * want to scan */ - if (ibmvscsi_send_crq(hostdata, 0xC001000000000000LL, 0) == 0 + if (ibmvscsi_ops->send_crq(hostdata, 0xC001000000000000LL, 0) == 0 || rc == H_RESOURCE) { /* * Wait around max init_timeout secs for the adapter to finish @@ -1636,7 +1639,7 @@ static int ibmvscsi_probe(struct vio_dev *vdev, const struct vio_device_id *id) add_host_failed: release_event_pool(&hostdata->pool, hostdata); init_pool_failed: - ibmvscsi_release_crq_queue(&hostdata->queue, hostdata, max_requests); + ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata, max_requests); init_crq_failed: scsi_host_put(host); scsi_host_alloc_failed: @@ -1647,8 +1650,8 @@ static int ibmvscsi_remove(struct vio_dev *vdev) { struct ibmvscsi_host_data *hostdata = vdev->dev.driver_data; release_event_pool(&hostdata->pool, hostdata); - ibmvscsi_release_crq_queue(&hostdata->queue, hostdata, - max_requests); + ibmvscsi_ops->release_crq_queue(&hostdata->queue, hostdata, + max_requests); srp_remove_host(hostdata->host); scsi_remove_host(hostdata->host); @@ -1684,6 +1687,13 @@ int __init ibmvscsi_module_init(void) { int ret; + if (firmware_has_feature(FW_FEATURE_ISERIES)) + ibmvscsi_ops = &iseriesvscsi_ops; + else if (firmware_has_feature(FW_FEATURE_VIO)) + ibmvscsi_ops = &rpavscsi_ops; + else + return -ENODEV; + ibmvscsi_transport_template = srp_attach_transport(&ibmvscsi_transport_functions); if (!ibmvscsi_transport_template) diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.h b/drivers/scsi/ibmvscsi/ibmvscsi.h index b19c2e26c2a5..46e850e302c7 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.h +++ b/drivers/scsi/ibmvscsi/ibmvscsi.h @@ -98,21 +98,25 @@ struct ibmvscsi_host_data { }; /* routines for managing a command/response queue */ -int ibmvscsi_init_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata, - int max_requests); -void ibmvscsi_release_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata, - int max_requests); -int ibmvscsi_reset_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata); - -int ibmvscsi_reenable_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata); - void ibmvscsi_handle_crq(struct viosrp_crq *crq, struct ibmvscsi_host_data *hostdata); -int ibmvscsi_send_crq(struct ibmvscsi_host_data *hostdata, - u64 word1, u64 word2); + +struct ibmvscsi_ops { + int (*init_crq_queue)(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata, + int max_requests); + void (*release_crq_queue)(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata, + int max_requests); + int (*reset_crq_queue)(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata); + int (*reenable_crq_queue)(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata); + int (*send_crq)(struct ibmvscsi_host_data *hostdata, + u64 word1, u64 word2); +}; + +extern struct ibmvscsi_ops iseriesvscsi_ops; +extern struct ibmvscsi_ops rpavscsi_ops; #endif /* IBMVSCSI_H */ diff --git a/drivers/scsi/ibmvscsi/iseries_vscsi.c b/drivers/scsi/ibmvscsi/iseries_vscsi.c index 6aeb5f003c3c..0775fdee5fa8 100644 --- a/drivers/scsi/ibmvscsi/iseries_vscsi.c +++ b/drivers/scsi/ibmvscsi/iseries_vscsi.c @@ -53,7 +53,7 @@ struct srp_lp_event { /** * standard interface for handling logical partition events. */ -static void ibmvscsi_handle_event(struct HvLpEvent *lpevt) +static void iseriesvscsi_handle_event(struct HvLpEvent *lpevt) { struct srp_lp_event *evt = (struct srp_lp_event *)lpevt; @@ -74,9 +74,9 @@ static void ibmvscsi_handle_event(struct HvLpEvent *lpevt) /* ------------------------------------------------------------ * Routines for driver initialization */ -int ibmvscsi_init_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata, - int max_requests) +static int iseriesvscsi_init_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata, + int max_requests) { int rc; @@ -88,7 +88,7 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue, goto viopath_open_failed; } - rc = vio_setHandler(viomajorsubtype_scsi, ibmvscsi_handle_event); + rc = vio_setHandler(viomajorsubtype_scsi, iseriesvscsi_handle_event); if (rc < 0) { printk("vio_setHandler failed with rc %d in open_event_path\n", rc); @@ -102,9 +102,9 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue, return -1; } -void ibmvscsi_release_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata, - int max_requests) +static void iseriesvscsi_release_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata, + int max_requests) { vio_clearHandler(viomajorsubtype_scsi); viopath_close(viopath_hostLp, viomajorsubtype_scsi, max_requests); @@ -117,8 +117,8 @@ void ibmvscsi_release_crq_queue(struct crq_queue *queue, * * no-op for iSeries */ -int ibmvscsi_reset_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata) +static int iseriesvscsi_reset_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata) { return 0; } @@ -130,19 +130,20 @@ int ibmvscsi_reset_crq_queue(struct crq_queue *queue, * * no-op for iSeries */ -int ibmvscsi_reenable_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata) +static int iseriesvscsi_reenable_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata) { return 0; } /** - * ibmvscsi_send_crq: - Send a CRQ + * iseriesvscsi_send_crq: - Send a CRQ * @hostdata: the adapter * @word1: the first 64 bits of the data * @word2: the second 64 bits of the data */ -int ibmvscsi_send_crq(struct ibmvscsi_host_data *hostdata, u64 word1, u64 word2) +static int iseriesvscsi_send_crq(struct ibmvscsi_host_data *hostdata, + u64 word1, u64 word2) { single_host_data = hostdata; return HvCallEvent_signalLpEventFast(viopath_hostLp, @@ -156,3 +157,11 @@ int ibmvscsi_send_crq(struct ibmvscsi_host_data *hostdata, u64 word1, u64 word2) VIOVERSION << 16, word1, word2, 0, 0); } + +struct ibmvscsi_ops iseriesvscsi_ops = { + .init_crq_queue = iseriesvscsi_init_crq_queue, + .release_crq_queue = iseriesvscsi_release_crq_queue, + .reset_crq_queue = iseriesvscsi_reset_crq_queue, + .reenable_crq_queue = iseriesvscsi_reenable_crq_queue, + .send_crq = iseriesvscsi_send_crq, +}; diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c index 9c14e789df5f..182146100dc1 100644 --- a/drivers/scsi/ibmvscsi/rpa_vscsi.c +++ b/drivers/scsi/ibmvscsi/rpa_vscsi.c @@ -42,14 +42,14 @@ static unsigned int partition_number = -1; * Routines for managing the command/response queue */ /** - * ibmvscsi_handle_event: - Interrupt handler for crq events + * rpavscsi_handle_event: - Interrupt handler for crq events * @irq: number of irq to handle, not used * @dev_instance: ibmvscsi_host_data of host that received interrupt * * Disables interrupts and schedules srp_task * Always returns IRQ_HANDLED */ -static irqreturn_t ibmvscsi_handle_event(int irq, void *dev_instance) +static irqreturn_t rpavscsi_handle_event(int irq, void *dev_instance) { struct ibmvscsi_host_data *hostdata = (struct ibmvscsi_host_data *)dev_instance; @@ -66,9 +66,9 @@ static irqreturn_t ibmvscsi_handle_event(int irq, void *dev_instance) * Frees irq, deallocates a page for messages, unmaps dma, and unregisters * the crq with the hypervisor. */ -void ibmvscsi_release_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata, - int max_requests) +static void rpavscsi_release_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata, + int max_requests) { long rc; struct vio_dev *vdev = to_vio_dev(hostdata->dev); @@ -108,12 +108,13 @@ static struct viosrp_crq *crq_queue_next_crq(struct crq_queue *queue) } /** - * ibmvscsi_send_crq: - Send a CRQ + * rpavscsi_send_crq: - Send a CRQ * @hostdata: the adapter * @word1: the first 64 bits of the data * @word2: the second 64 bits of the data */ -int ibmvscsi_send_crq(struct ibmvscsi_host_data *hostdata, u64 word1, u64 word2) +static int rpavscsi_send_crq(struct ibmvscsi_host_data *hostdata, + u64 word1, u64 word2) { struct vio_dev *vdev = to_vio_dev(hostdata->dev); @@ -121,10 +122,10 @@ int ibmvscsi_send_crq(struct ibmvscsi_host_data *hostdata, u64 word1, u64 word2) } /** - * ibmvscsi_task: - Process srps asynchronously + * rpavscsi_task: - Process srps asynchronously * @data: ibmvscsi_host_data of host */ -static void ibmvscsi_task(void *data) +static void rpavscsi_task(void *data) { struct ibmvscsi_host_data *hostdata = (struct ibmvscsi_host_data *)data; struct vio_dev *vdev = to_vio_dev(hostdata->dev); @@ -190,6 +191,42 @@ static void set_adapter_info(struct ibmvscsi_host_data *hostdata) } /** + * reset_crq_queue: - resets a crq after a failure + * @queue: crq_queue to initialize and register + * @hostdata: ibmvscsi_host_data of host + * + */ +static int rpavscsi_reset_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata) +{ + int rc; + struct vio_dev *vdev = to_vio_dev(hostdata->dev); + + /* Close the CRQ */ + do { + rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); + } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc))); + + /* Clean out the queue */ + memset(queue->msgs, 0x00, PAGE_SIZE); + queue->cur = 0; + + set_adapter_info(hostdata); + + /* And re-open it again */ + rc = plpar_hcall_norets(H_REG_CRQ, + vdev->unit_address, + queue->msg_token, PAGE_SIZE); + if (rc == 2) { + /* Adapter is good, but other end is not ready */ + dev_warn(hostdata->dev, "Partner adapter not ready\n"); + } else if (rc != 0) { + dev_warn(hostdata->dev, "couldn't register crq--rc 0x%x\n", rc); + } + return rc; +} + +/** * initialize_crq_queue: - Initializes and registers CRQ with hypervisor * @queue: crq_queue to initialize and register * @hostdata: ibmvscsi_host_data of host @@ -198,9 +235,9 @@ static void set_adapter_info(struct ibmvscsi_host_data *hostdata) * the crq with the hypervisor. * Returns zero on success. */ -int ibmvscsi_init_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata, - int max_requests) +static int rpavscsi_init_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata, + int max_requests) { int rc; int retrc; @@ -227,7 +264,7 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue, queue->msg_token, PAGE_SIZE); if (rc == H_RESOURCE) /* maybe kexecing and resource is busy. try a reset */ - rc = ibmvscsi_reset_crq_queue(queue, + rc = rpavscsi_reset_crq_queue(queue, hostdata); if (rc == 2) { @@ -240,7 +277,7 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue, } if (request_irq(vdev->irq, - ibmvscsi_handle_event, + rpavscsi_handle_event, 0, "ibmvscsi", (void *)hostdata) != 0) { dev_err(hostdata->dev, "couldn't register irq 0x%x\n", vdev->irq); @@ -256,7 +293,7 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue, queue->cur = 0; spin_lock_init(&queue->lock); - tasklet_init(&hostdata->srp_task, (void *)ibmvscsi_task, + tasklet_init(&hostdata->srp_task, (void *)rpavscsi_task, (unsigned long)hostdata); return retrc; @@ -281,8 +318,8 @@ int ibmvscsi_init_crq_queue(struct crq_queue *queue, * @hostdata: ibmvscsi_host_data of host * */ -int ibmvscsi_reenable_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata) +static int rpavscsi_reenable_crq_queue(struct crq_queue *queue, + struct ibmvscsi_host_data *hostdata) { int rc; struct vio_dev *vdev = to_vio_dev(hostdata->dev); @@ -297,38 +334,10 @@ int ibmvscsi_reenable_crq_queue(struct crq_queue *queue, return rc; } -/** - * reset_crq_queue: - resets a crq after a failure - * @queue: crq_queue to initialize and register - * @hostdata: ibmvscsi_host_data of host - * - */ -int ibmvscsi_reset_crq_queue(struct crq_queue *queue, - struct ibmvscsi_host_data *hostdata) -{ - int rc; - struct vio_dev *vdev = to_vio_dev(hostdata->dev); - - /* Close the CRQ */ - do { - rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address); - } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc))); - - /* Clean out the queue */ - memset(queue->msgs, 0x00, PAGE_SIZE); - queue->cur = 0; - - set_adapter_info(hostdata); - - /* And re-open it again */ - rc = plpar_hcall_norets(H_REG_CRQ, - vdev->unit_address, - queue->msg_token, PAGE_SIZE); - if (rc == 2) { - /* Adapter is good, but other end is not ready */ - dev_warn(hostdata->dev, "Partner adapter not ready\n"); - } else if (rc != 0) { - dev_warn(hostdata->dev, "couldn't register crq--rc 0x%x\n", rc); - } - return rc; -} +struct ibmvscsi_ops rpavscsi_ops = { + .init_crq_queue = rpavscsi_init_crq_queue, + .release_crq_queue = rpavscsi_release_crq_queue, + .reset_crq_queue = rpavscsi_reset_crq_queue, + .reenable_crq_queue = rpavscsi_reenable_crq_queue, + .send_crq = rpavscsi_send_crq, +}; |
