diff options
| -rw-r--r-- | drivers/scsi/isci/host.c | 21 | ||||
| -rw-r--r-- | drivers/scsi/isci/host.h | 17 | ||||
| -rw-r--r-- | drivers/scsi/isci/init.c | 27 | ||||
| -rw-r--r-- | drivers/scsi/isci/isci.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.c | 73 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.h | 2 |
6 files changed, 68 insertions, 73 deletions
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 8d25566..ae5d460 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -378,8 +378,7 @@ static void __iomem *smu_base(struct isci_host *isci_host) int isci_host_init(struct isci_host *isci_host) { - int err = 0; - int index = 0; + int err = 0, i; enum sci_status status; struct scic_sds_controller *controller; union scic_oem_parameters scic_oem_params; @@ -509,13 +508,19 @@ int isci_host_init(struct isci_host *isci_host) if (!isci_host->dma_pool) return -ENOMEM; - for (index = 0; index < SCI_MAX_PORTS; index++) - isci_port_init(&isci_host->isci_ports[index], - isci_host, - index); + for (i = 0; i < SCI_MAX_PORTS; i++) + isci_port_init(&isci_host->isci_ports[i], isci_host, i); - for (index = 0; index < SCI_MAX_PHYS; index++) - isci_phy_init(&isci_host->phys[index], isci_host, index); + for (i = 0; i < SCI_MAX_PHYS; i++) + isci_phy_init(&isci_host->phys[i], isci_host, i); + + for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { + struct isci_remote_device *idev = idev_by_id(isci_host, i); + + INIT_LIST_HEAD(&idev->reqs_in_process); + INIT_LIST_HEAD(&idev->node); + spin_lock_init(&idev->state_lock); + } return 0; } diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 6a6304c..3c69f1f 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -61,6 +61,7 @@ /*#include "task.h"*/ #include "timers.h" #include "remote_device.h" +#include "scic_remote_device.h" #define DRV_NAME "isci" #define SCI_PCI_BAR_COUNT 2 @@ -117,8 +118,18 @@ struct isci_host { struct list_head requests_to_complete; struct list_head requests_to_abort; spinlock_t scic_lock; + + /* careful only access this via idev_by_id */ + struct isci_remote_device devices[0]; }; +static inline struct isci_remote_device *idev_by_id(struct isci_host *ihost, int i) +{ + void *p = ihost->devices; + + return p + i * (sizeof(struct isci_remote_device) + + scic_remote_device_get_object_size()); +} /** * struct isci_pci_info - This class represents the pci function containing the @@ -219,11 +230,7 @@ static inline void wait_for_device_start(struct isci_host *ihost, struct isci_re static inline void wait_for_device_stop(struct isci_host *ihost, struct isci_remote_device *idev) { - /* todo switch to: - * wait_event(ihost->eventq, !test_bit(IDEV_STOP_PENDING, &idev->flags)); - * once devices are statically allocated - */ - wait_for_completion(idev->cmp); + wait_event(ihost->eventq, !test_bit(IDEV_STOP_PENDING, &idev->flags)); } /** diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index f1b8a51..2838bef 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -64,7 +64,6 @@ #include "sci_environment.h" static struct scsi_transport_template *isci_transport_template; -struct kmem_cache *isci_kmem_cache; static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = { { PCI_VDEVICE(INTEL, 0x1D61),}, @@ -443,7 +442,10 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) struct Scsi_Host *shost; int err; - isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL); + isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host) + + SCI_MAX_REMOTE_DEVICES * + (sizeof(struct isci_remote_device) + + scic_remote_device_get_object_size()), GFP_KERNEL); if (!isci_host) return NULL; @@ -656,31 +658,17 @@ static void __devexit isci_pci_remove(struct pci_dev *pdev) static __init int isci_init(void) { - int err = -ENOMEM; + int err; pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME); - isci_kmem_cache = kmem_cache_create(DRV_NAME, - sizeof(struct isci_remote_device) + - scic_remote_device_get_object_size(), - 0, 0, NULL); - if (!isci_kmem_cache) - return err; - isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); if (!isci_transport_template) - goto err_kmem; + return -ENOMEM; err = pci_register_driver(&isci_pci_driver); if (err) - goto err_sas; - - return 0; - - err_sas: - sas_release_transport(isci_transport_template); - err_kmem: - kmem_cache_destroy(isci_kmem_cache); + sas_release_transport(isci_transport_template); return err; } @@ -689,7 +677,6 @@ static __exit void isci_exit(void) { pci_unregister_driver(&isci_pci_driver); sas_release_transport(isci_transport_template); - kmem_cache_destroy(isci_kmem_cache); } MODULE_LICENSE("Dual BSD/GPL"); diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h index 9b9aa50..24c67b0 100644 --- a/drivers/scsi/isci/isci.h +++ b/drivers/scsi/isci/isci.h @@ -89,7 +89,6 @@ #include "task.h" #include "sata.h" -extern struct kmem_cache *isci_kmem_cache; extern struct isci_firmware *isci_firmware; #define ISCI_FW_NAME "isci/isci_firmware.bin" diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index db2259c..48556e4 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -67,40 +67,35 @@ /** * isci_remote_device_deconstruct() - This function frees an isci_remote_device. - * @isci_host: This parameter specifies the isci host object. - * @isci_device: This parameter specifies the remote device to be freed. + * @ihost: This parameter specifies the isci host object. + * @idev: This parameter specifies the remote device to be freed. * */ -static void isci_remote_device_deconstruct( - struct isci_host *isci_host, - struct isci_remote_device *isci_device) +static void isci_remote_device_deconstruct(struct isci_host *ihost, struct isci_remote_device *idev) { - dev_dbg(&isci_host->pdev->dev, - "%s: isci_device = %p\n", __func__, isci_device); + dev_dbg(&ihost->pdev->dev, + "%s: isci_device = %p\n", __func__, idev); /* There should not be any outstanding io's. All paths to * here should go through isci_remote_device_nuke_requests. * If we hit this condition, we will need a way to complete * io requests in process */ - while (!list_empty(&isci_device->reqs_in_process)) { + while (!list_empty(&idev->reqs_in_process)) { - dev_err(&isci_host->pdev->dev, + dev_err(&ihost->pdev->dev, "%s: ** request list not empty! **\n", __func__); BUG(); } - /* Remove all related references to this device and free - * the cache object. - */ - scic_remote_device_destruct(to_sci_dev(isci_device)); - isci_device->domain_dev->lldd_dev = NULL; - list_del(&isci_device->node); - - clear_bit(IDEV_STOP_PENDING, &isci_device->flags); - clear_bit(IDEV_START_PENDING, &isci_device->flags); - wake_up(&isci_host->eventq); - complete(isci_device->cmp); - kmem_cache_free(isci_kmem_cache, isci_device); + scic_remote_device_destruct(to_sci_dev(idev)); + idev->domain_dev->lldd_dev = NULL; + idev->domain_dev = NULL; + idev->isci_port = NULL; + list_del_init(&idev->node); + + clear_bit(IDEV_START_PENDING, &idev->flags); + clear_bit(IDEV_STOP_PENDING, &idev->flags); + wake_up(&ihost->eventq); } @@ -259,25 +254,27 @@ void isci_remote_device_nuke_requests( * pointer to new isci_remote_device. */ static struct isci_remote_device * -isci_remote_device_alloc(struct isci_host *isci_host, struct isci_port *port) +isci_remote_device_alloc(struct isci_host *ihost, struct isci_port *iport) { - struct isci_remote_device *isci_device; + struct isci_remote_device *idev; + int i; - isci_device = kmem_cache_zalloc(isci_kmem_cache, GFP_KERNEL); + for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { + idev = idev_by_id(ihost, i); + if (!test_and_set_bit(IDEV_ALLOCATED, &idev->flags)) + break; + } - if (!isci_device) { - dev_warn(&isci_host->pdev->dev, "%s: failed\n", __func__); + if (i >= SCI_MAX_REMOTE_DEVICES) { + dev_warn(&ihost->pdev->dev, "%s: failed\n", __func__); return NULL; } - INIT_LIST_HEAD(&isci_device->reqs_in_process); - INIT_LIST_HEAD(&isci_device->node); - - spin_lock_init(&isci_device->state_lock); - isci_remote_device_change_state(isci_device, isci_freed); - - return isci_device; + BUG_ON(!list_empty(&idev->reqs_in_process)); + BUG_ON(!list_empty(&idev->node)); + isci_remote_device_change_state(idev, isci_freed); + return idev; } /** @@ -381,24 +378,22 @@ enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_rem { enum sci_status status; unsigned long flags; - DECLARE_COMPLETION_ONSTACK(completion); dev_dbg(&ihost->pdev->dev, "%s: isci_device = %p\n", __func__, idev); isci_remote_device_change_state(idev, isci_stopping); set_bit(IDEV_STOP_PENDING, &idev->flags); - idev->cmp = &completion; spin_lock_irqsave(&ihost->scic_lock, flags); - status = scic_remote_device_stop(to_sci_dev(idev), 50); - spin_unlock_irqrestore(&ihost->scic_lock, flags); /* Wait for the stop complete callback. */ - if (status == SCI_SUCCESS) + if (status == SCI_SUCCESS) { wait_for_device_stop(ihost, idev); + clear_bit(IDEV_ALLOCATED, &idev->flags); + } dev_dbg(&ihost->pdev->dev, "%s: idev = %p - after completion wait\n", @@ -469,6 +464,8 @@ int isci_remote_device_found(struct domain_device *domain_dev) return -ENODEV; isci_device = isci_remote_device_alloc(isci_host, isci_port); + if (!isci_device) + return -ENODEV; INIT_LIST_HEAD(&isci_device->node); domain_dev->lldd_dev = isci_device; diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 3c22137c..f45a5f0 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -63,8 +63,8 @@ struct isci_remote_device { enum isci_status status; #define IDEV_START_PENDING 0 #define IDEV_STOP_PENDING 1 + #define IDEV_ALLOCATED 2 unsigned long flags; - struct completion *cmp; struct isci_port *isci_port; struct domain_device *domain_dev; struct list_head node; |
