From e5fd91f1ef340da553f7a79da9540c3db711c937 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Tue, 8 Sep 2015 01:01:14 -0300 Subject: Linux-libre 4.2-gnu --- drivers/block/mtip32xx/mtip32xx.c | 236 +++++++++++++++----------------------- 1 file changed, 92 insertions(+), 144 deletions(-) (limited to 'drivers/block/mtip32xx/mtip32xx.c') diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 3bd7ca985..f504232c1 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -163,12 +163,6 @@ static bool mtip_check_surprise_removal(struct pci_dev *pdev) else dev_warn(&dd->pdev->dev, "%s: dd->queue is NULL\n", __func__); - if (dd->port) { - set_bit(MTIP_PF_SR_CLEANUP_BIT, &dd->port->flags); - wake_up_interruptible(&dd->port->svc_wait); - } else - dev_warn(&dd->pdev->dev, - "%s: dd->port is NULL\n", __func__); return true; /* device removed */ } @@ -269,8 +263,11 @@ static int mtip_hba_reset(struct driver_data *dd) /* Flush */ readl(dd->mmio + HOST_CTL); - /* Spin for up to 2 seconds, waiting for reset acknowledgement */ - timeout = jiffies + msecs_to_jiffies(2000); + /* + * Spin for up to 10 seconds waiting for reset acknowledgement. Spec + * is 1 sec but in LUN failure conditions, up to 10 secs are required + */ + timeout = jiffies + msecs_to_jiffies(10000); do { mdelay(10); if (test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag)) @@ -623,8 +620,7 @@ static void mtip_handle_tfe(struct driver_data *dd) set_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags); - if (test_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags) && - test_bit(MTIP_TAG_INTERNAL, port->allocated)) { + if (test_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags)) { cmd = mtip_cmd_from_tag(dd, MTIP_TAG_INTERNAL); dbg_printk(MTIP_DRV_NAME " TFE for the internal command\n"); @@ -896,6 +892,10 @@ static inline irqreturn_t mtip_handle_irq(struct driver_data *data) /* Acknowledge the interrupt status on the port.*/ port_stat = readl(port->mmio + PORT_IRQ_STAT); + if (unlikely(port_stat == 0xFFFFFFFF)) { + mtip_check_surprise_removal(dd->pdev); + return IRQ_HANDLED; + } writel(port_stat, port->mmio + PORT_IRQ_STAT); /* Demux port status */ @@ -991,15 +991,10 @@ static bool mtip_pause_ncq(struct mtip_port *port, reply = port->rxfis + RX_FIS_D2H_REG; task_file_data = readl(port->mmio+PORT_TFDATA); - if (fis->command == ATA_CMD_SEC_ERASE_UNIT) - clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag); - if ((task_file_data & 1)) return false; if (fis->command == ATA_CMD_SEC_ERASE_PREP) { - set_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); - set_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag); port->ic_pause_timer = jiffies; return true; } else if ((fis->command == ATA_CMD_DOWNLOAD_MICRO) && @@ -1011,8 +1006,10 @@ static bool mtip_pause_ncq(struct mtip_port *port, ((fis->command == 0xFC) && (fis->features == 0x27 || fis->features == 0x72 || fis->features == 0x62 || fis->features == 0x26))) { + clear_bit(MTIP_DDF_SEC_LOCK_BIT, &port->dd->dd_flag); /* Com reset after secure erase or lowlevel format */ mtip_restart_port(port); + clear_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); return false; } @@ -1112,9 +1109,10 @@ static int mtip_exec_internal_command(struct mtip_port *port, int_cmd = mtip_get_int_command(dd); set_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); - port->ic_pause_timer = 0; - clear_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); + if (fis->command == ATA_CMD_SEC_ERASE_PREP) + set_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); + clear_bit(MTIP_PF_DM_ACTIVE_BIT, &port->flags); if (atomic == GFP_KERNEL) { @@ -1251,11 +1249,11 @@ static int mtip_exec_internal_command(struct mtip_port *port, exec_ic_exit: /* Clear the allocated and active bits for the internal command. */ mtip_put_int_command(dd, int_cmd); + clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); if (rv >= 0 && mtip_pause_ncq(port, fis)) { /* NCQ paused */ return rv; } - clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); wake_up_interruptible(&port->svc_wait); return rv; @@ -2625,18 +2623,6 @@ static ssize_t mtip_hw_read_registers(struct file *f, char __user *ubuf, readl(dd->mmio + HOST_IRQ_STAT)); size += sprintf(&buf[size], "\n"); - size += sprintf(&buf[size], "L/ Allocated : [ 0x"); - - for (n = dd->slot_groups-1; n >= 0; n--) { - if (sizeof(long) > sizeof(u32)) - group_allocated = - dd->port->allocated[n/2] >> (32*(n&1)); - else - group_allocated = dd->port->allocated[n]; - size += sprintf(&buf[size], "%08X ", group_allocated); - } - size += sprintf(&buf[size], "]\n"); - size += sprintf(&buf[size], "L/ Commands in Q : [ 0x"); for (n = dd->slot_groups-1; n >= 0; n--) { @@ -2780,48 +2766,6 @@ static void mtip_hw_debugfs_exit(struct driver_data *dd) debugfs_remove_recursive(dd->dfs_node); } -static int mtip_free_orphan(struct driver_data *dd) -{ - struct kobject *kobj; - - if (dd->bdev) { - if (dd->bdev->bd_holders >= 1) - return -2; - - bdput(dd->bdev); - dd->bdev = NULL; - } - - mtip_hw_debugfs_exit(dd); - - spin_lock(&rssd_index_lock); - ida_remove(&rssd_index_ida, dd->index); - spin_unlock(&rssd_index_lock); - - if (!test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag) && - test_bit(MTIP_DDF_REBUILD_FAILED_BIT, &dd->dd_flag)) { - put_disk(dd->disk); - } else { - if (dd->disk) { - kobj = kobject_get(&disk_to_dev(dd->disk)->kobj); - if (kobj) { - mtip_hw_sysfs_exit(dd, kobj); - kobject_put(kobj); - } - del_gendisk(dd->disk); - dd->disk = NULL; - } - if (dd->queue) { - dd->queue->queuedata = NULL; - blk_cleanup_queue(dd->queue); - blk_mq_free_tag_set(&dd->tags); - dd->queue = NULL; - } - } - kfree(dd); - return 0; -} - /* * Perform any init/resume time hardware setup * @@ -2944,7 +2888,6 @@ static int mtip_ftl_rebuild_poll(struct driver_data *dd) mtip_block_initialize(dd); return 0; } - ssleep(10); } while (time_before(jiffies, timeout)); /* Check for timeout */ @@ -2969,7 +2912,6 @@ static int mtip_service_thread(void *data) unsigned long slot, slot_start, slot_wrap; unsigned int num_cmd_slots = dd->slot_groups * 32; struct mtip_port *port = dd->port; - int ret; while (1) { if (kthread_should_stop() || @@ -2990,10 +2932,6 @@ static int mtip_service_thread(void *data) test_bit(MTIP_PF_SVC_THD_STOP_BIT, &port->flags)) goto st_out; - /* If I am an orphan, start self cleanup */ - if (test_bit(MTIP_PF_SR_CLEANUP_BIT, &port->flags)) - break; - if (unlikely(test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag))) goto st_out; @@ -3047,26 +2985,6 @@ restart_eh: } } - /* wait for pci remove to exit */ - while (1) { - if (test_bit(MTIP_DDF_REMOVE_DONE_BIT, &dd->dd_flag)) - break; - msleep_interruptible(1000); - if (kthread_should_stop()) - goto st_out; - } - - while (1) { - ret = mtip_free_orphan(dd); - if (!ret) { - /* NOTE: All data structures are invalid, do not - * access any here */ - return 0; - } - msleep_interruptible(1000); - if (kthread_should_stop()) - goto st_out; - } st_out: return 0; } @@ -3394,6 +3312,7 @@ static int mtip_hw_exit(struct driver_data *dd) /* Release the IRQ. */ irq_set_affinity_hint(dd->pdev->irq, NULL); devm_free_irq(&dd->pdev->dev, dd->pdev->irq, dd); + msleep(1000); /* Free dma regions */ mtip_dma_free(dd); @@ -3699,6 +3618,26 @@ static const struct block_device_operations mtip_block_ops = { .owner = THIS_MODULE }; +static inline bool is_se_active(struct driver_data *dd) +{ + if (unlikely(test_bit(MTIP_PF_SE_ACTIVE_BIT, &dd->port->flags))) { + if (dd->port->ic_pause_timer) { + unsigned long to = dd->port->ic_pause_timer + + msecs_to_jiffies(1000); + if (time_after(jiffies, to)) { + clear_bit(MTIP_PF_SE_ACTIVE_BIT, + &dd->port->flags); + clear_bit(MTIP_DDF_SEC_LOCK_BIT, &dd->dd_flag); + dd->port->ic_pause_timer = 0; + wake_up_interruptible(&dd->port->svc_wait); + return false; + } + } + return true; + } + return false; +} + /* * Block layer make request function. * @@ -3716,6 +3655,9 @@ static int mtip_submit_request(struct blk_mq_hw_ctx *hctx, struct request *rq) struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq); unsigned int nents; + if (is_se_active(dd)) + return -ENODATA; + if (unlikely(dd->dd_flag & MTIP_DDF_STOP_IO)) { if (unlikely(test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag))) { @@ -3814,6 +3756,14 @@ static int mtip_init_cmd(void *data, struct request *rq, unsigned int hctx_idx, struct mtip_cmd *cmd = blk_mq_rq_to_pdu(rq); u32 host_cap_64 = readl(dd->mmio + HOST_CAP) & HOST_CAP_64; + /* + * For flush requests, request_idx starts at the end of the + * tag space. Since we don't support FLUSH/FUA, simply return + * 0 as there's nothing to be done. + */ + if (request_idx >= MTIP_MAX_COMMAND_SLOTS) + return 0; + cmd->command = dmam_alloc_coherent(&dd->pdev->dev, CMD_DMA_ALLOC_SZ, &cmd->command_dma, GFP_KERNEL); if (!cmd->command) @@ -3900,7 +3850,8 @@ static int mtip_block_initialize(struct driver_data *dd) dd->disk->driverfs_dev = &dd->pdev->dev; dd->disk->major = dd->major; - dd->disk->first_minor = dd->instance * MTIP_MAX_MINORS; + dd->disk->first_minor = index * MTIP_MAX_MINORS; + dd->disk->minors = MTIP_MAX_MINORS; dd->disk->fops = &mtip_block_ops; dd->disk->private_data = dd; dd->index = index; @@ -4066,52 +4017,51 @@ static int mtip_block_remove(struct driver_data *dd) { struct kobject *kobj; - if (!dd->sr) { - mtip_hw_debugfs_exit(dd); + mtip_hw_debugfs_exit(dd); - if (dd->mtip_svc_handler) { - set_bit(MTIP_PF_SVC_THD_STOP_BIT, &dd->port->flags); - wake_up_interruptible(&dd->port->svc_wait); - kthread_stop(dd->mtip_svc_handler); - } + if (dd->mtip_svc_handler) { + set_bit(MTIP_PF_SVC_THD_STOP_BIT, &dd->port->flags); + wake_up_interruptible(&dd->port->svc_wait); + kthread_stop(dd->mtip_svc_handler); + } - /* Clean up the sysfs attributes, if created */ - if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag)) { - kobj = kobject_get(&disk_to_dev(dd->disk)->kobj); - if (kobj) { - mtip_hw_sysfs_exit(dd, kobj); - kobject_put(kobj); - } + /* Clean up the sysfs attributes, if created */ + if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag)) { + kobj = kobject_get(&disk_to_dev(dd->disk)->kobj); + if (kobj) { + mtip_hw_sysfs_exit(dd, kobj); + kobject_put(kobj); } + } + if (!dd->sr) mtip_standby_drive(dd); - - /* - * Delete our gendisk structure. This also removes the device - * from /dev - */ - if (dd->bdev) { - bdput(dd->bdev); - dd->bdev = NULL; - } - if (dd->disk) { - if (dd->disk->queue) { - del_gendisk(dd->disk); - blk_cleanup_queue(dd->queue); - blk_mq_free_tag_set(&dd->tags); - dd->queue = NULL; - } else - put_disk(dd->disk); - } - dd->disk = NULL; - - spin_lock(&rssd_index_lock); - ida_remove(&rssd_index_ida, dd->index); - spin_unlock(&rssd_index_lock); - } else { + else dev_info(&dd->pdev->dev, "device %s surprise removal\n", dd->disk->disk_name); + + /* + * Delete our gendisk structure. This also removes the device + * from /dev + */ + if (dd->bdev) { + bdput(dd->bdev); + dd->bdev = NULL; + } + if (dd->disk) { + del_gendisk(dd->disk); + if (dd->disk->queue) { + blk_cleanup_queue(dd->queue); + blk_mq_free_tag_set(&dd->tags); + dd->queue = NULL; + } + put_disk(dd->disk); } + dd->disk = NULL; + + spin_lock(&rssd_index_lock); + ida_remove(&rssd_index_ida, dd->index); + spin_unlock(&rssd_index_lock); /* De-initialize the protocol layer. */ mtip_hw_exit(dd); @@ -4140,12 +4090,12 @@ static int mtip_block_shutdown(struct driver_data *dd) dev_info(&dd->pdev->dev, "Shutting down %s ...\n", dd->disk->disk_name); + del_gendisk(dd->disk); if (dd->disk->queue) { - del_gendisk(dd->disk); blk_cleanup_queue(dd->queue); blk_mq_free_tag_set(&dd->tags); - } else - put_disk(dd->disk); + } + put_disk(dd->disk); dd->disk = NULL; dd->queue = NULL; } @@ -4507,6 +4457,7 @@ static void mtip_pci_remove(struct pci_dev *pdev) "Completion workers still active!\n"); } + blk_mq_stop_hw_queues(dd->queue); /* Clean up the block layer. */ mtip_block_remove(dd); @@ -4524,10 +4475,7 @@ static void mtip_pci_remove(struct pci_dev *pdev) list_del_init(&dd->remove_list); spin_unlock_irqrestore(&dev_lock, flags); - if (!dd->sr) - kfree(dd); - else - set_bit(MTIP_DDF_REMOVE_DONE_BIT, &dd->dd_flag); + kfree(dd); pcim_iounmap_regions(pdev, 1 << MTIP_ABAR); pci_set_drvdata(pdev, NULL); -- cgit v1.2.3