diff options
| -rw-r--r-- | drivers/scsi/mpi3mr/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/scsi/mpi3mr/Makefile | 1 | ||||
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr.h | 20 | ||||
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_app.c | 105 | ||||
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_os.c | 2 |
5 files changed, 129 insertions, 0 deletions
diff --git a/drivers/scsi/mpi3mr/Kconfig b/drivers/scsi/mpi3mr/Kconfig index f7882375e74f..8997531940c2 100644 --- a/drivers/scsi/mpi3mr/Kconfig +++ b/drivers/scsi/mpi3mr/Kconfig @@ -3,5 +3,6 @@ config SCSI_MPI3MR tristate "Broadcom MPI3 Storage Controller Device Driver" depends on PCI && SCSI + select BLK_DEV_BSGLIB help MPI3 based Storage & RAID Controllers Driver. diff --git a/drivers/scsi/mpi3mr/Makefile b/drivers/scsi/mpi3mr/Makefile index 7c2063e04c81..f5cdbe48c150 100644 --- a/drivers/scsi/mpi3mr/Makefile +++ b/drivers/scsi/mpi3mr/Makefile @@ -2,3 +2,4 @@ obj-m += mpi3mr.o mpi3mr-y += mpi3mr_os.o \ mpi3mr_fw.o \ + mpi3mr_app.o \ diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index 96c85f719af0..70bbc2074e15 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -148,6 +148,7 @@ extern int prot_mask; #define MPI3MR_DEFAULT_MDTS (128 * 1024) #define MPI3MR_DEFAULT_PGSZEXP (12) + /* Command retry count definitions */ #define MPI3MR_DEV_RMHS_RETRY_COUNT 3 @@ -175,6 +176,18 @@ extern int prot_mask; /* MSI Index from Reply Queue Index */ #define REPLY_QUEUE_IDX_TO_MSIX_IDX(qidx, offset) (qidx + offset) +/* + * Maximum data transfer size definitions for management + * application commands + */ +#define MPI3MR_MAX_APP_XFER_SIZE (1 * 1024 * 1024) +#define MPI3MR_MAX_APP_XFER_SEGMENTS 512 +/* + * 2048 sectors are for data buffers and additional 512 sectors for + * other buffers + */ +#define MPI3MR_MAX_APP_XFER_SECTORS (2048 + 512) + /* IOC State definitions */ enum mpi3mr_iocstate { MRIOC_STATE_READY = 1, @@ -714,6 +727,8 @@ struct scmd_priv { * @default_qcount: Total Default queues * @active_poll_qcount: Currently active poll queue count * @requested_poll_qcount: User requested poll queue count + * @bsg_dev: BSG device structure + * @bsg_queue: Request queue for BSG device */ struct mpi3mr_ioc { struct list_head list; @@ -854,6 +869,9 @@ struct mpi3mr_ioc { u16 default_qcount; u16 active_poll_qcount; u16 requested_poll_qcount; + + struct device *bsg_dev; + struct request_queue *bsg_queue; }; /** @@ -962,5 +980,7 @@ void mpi3mr_check_rh_fault_ioc(struct mpi3mr_ioc *mrioc, u32 reason_code); int mpi3mr_process_op_reply_q(struct mpi3mr_ioc *mrioc, struct op_reply_qinfo *op_reply_q); int mpi3mr_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num); +void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc); +void mpi3mr_bsg_exit(struct mpi3mr_ioc *mrioc); #endif /*MPI3MR_H_INCLUDED*/ diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c new file mode 100644 index 000000000000..948d4ff2ea06 --- /dev/null +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Broadcom MPI3 Storage Controllers + * + * Copyright (C) 2017-2022 Broadcom Inc. + * (mailto: mpi3mr-linuxdrv.pdl@broadcom.com) + * + */ + +#include "mpi3mr.h" +#include <linux/bsg-lib.h> + +/** + * mpi3mr_bsg_request - bsg request entry point + * @job: BSG job reference + * + * This is driver's entry point for bsg requests + * + * Return: 0 on success and proper error codes on failure + */ +static int mpi3mr_bsg_request(struct bsg_job *job) +{ + return 0; +} + +/** + * mpi3mr_bsg_exit - de-registration from bsg layer + * + * This will be called during driver unload and all + * bsg resources allocated during load will be freed. + * + * Return:Nothing + */ +void mpi3mr_bsg_exit(struct mpi3mr_ioc *mrioc) +{ + if (!mrioc->bsg_queue) + return; + + bsg_remove_queue(mrioc->bsg_queue); + mrioc->bsg_queue = NULL; + + device_del(mrioc->bsg_dev); + put_device(mrioc->bsg_dev); + kfree(mrioc->bsg_dev); +} + +/** + * mpi3mr_bsg_node_release -release bsg device node + * @dev: bsg device node + * + * decrements bsg dev reference count + * + * Return:Nothing + */ +static void mpi3mr_bsg_node_release(struct device *dev) +{ + put_device(dev); +} + +/** + * mpi3mr_bsg_init - registration with bsg layer + * + * This will be called during driver load and it will + * register driver with bsg layer + * + * Return:Nothing + */ +void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc) +{ + mrioc->bsg_dev = kzalloc(sizeof(struct device), GFP_KERNEL); + if (!mrioc->bsg_dev) { + ioc_err(mrioc, "bsg device mem allocation failed\n"); + return; + } + + device_initialize(mrioc->bsg_dev); + dev_set_name(mrioc->bsg_dev, "mpi3mrctl%u", mrioc->id); + + if (device_add(mrioc->bsg_dev)) { + ioc_err(mrioc, "%s: bsg device add failed\n", + dev_name(mrioc->bsg_dev)); + goto err_device_add; + } + + mrioc->bsg_dev->release = mpi3mr_bsg_node_release; + + mrioc->bsg_queue = bsg_setup_queue(mrioc->bsg_dev, dev_name(mrioc->bsg_dev), + mpi3mr_bsg_request, NULL, 0); + if (!mrioc->bsg_queue) { + ioc_err(mrioc, "%s: bsg registration failed\n", + dev_name(mrioc->bsg_dev)); + goto err_setup_queue; + } + + blk_queue_max_segments(mrioc->bsg_queue, MPI3MR_MAX_APP_XFER_SEGMENTS); + blk_queue_max_hw_sectors(mrioc->bsg_queue, MPI3MR_MAX_APP_XFER_SECTORS); + + return; + +err_setup_queue: + device_del(mrioc->bsg_dev); + put_device(mrioc->bsg_dev); +err_device_add: + kfree(mrioc->bsg_dev); +} diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index f7cd70a15ea6..faf14a5f9123 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -4345,6 +4345,7 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id) } scsi_scan_host(shost); + mpi3mr_bsg_init(mrioc); return retval; addhost_failed: @@ -4389,6 +4390,7 @@ static void mpi3mr_remove(struct pci_dev *pdev) while (mrioc->reset_in_progress || mrioc->is_driver_loading) ssleep(1); + mpi3mr_bsg_exit(mrioc); mrioc->stop_drv_processing = 1; mpi3mr_cleanup_fwevt_list(mrioc); spin_lock_irqsave(&mrioc->fwevt_lock, flags); |