From patchwork Tue Dec 8 19:37:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Don Brace X-Patchwork-Id: 11959629 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E186C2D0E4 for ; Tue, 8 Dec 2020 20:27:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2D3D723AA8 for ; Tue, 8 Dec 2020 20:27:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729126AbgLHU1s (ORCPT ); Tue, 8 Dec 2020 15:27:48 -0500 Received: from esa3.microchip.iphmx.com ([68.232.153.233]:25111 "EHLO esa3.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726703AbgLHU1r (ORCPT ); Tue, 8 Dec 2020 15:27:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1607459265; x=1638995265; h=subject:from:to:cc:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=10MjEkK2pnB3xDBVVW5Eqa8Gio6eIQY4zFUyyWHoMBk=; b=a6NoZb5xADz/jYVA1O7mFFdtjRZuMCzIH4bhFdewr/IJhZJ35abh+Nj0 aoLirLq3rxABtKi+oa5skRuUmA3oH4+tNEoTrU0tCnzRhQg7bKbCnqnOZ p5Zz8ovnFKPvmBd9P7xMFwH9J36k3fqAoww5yQzLCtf/3PQr3xoMT6tjg wZve/THcce2E8Z19un7TSyWJsm658eThOq5K/NloTppe4f+RG38f4N8HK nfdXrHHED+K+HdE4QxaT6RQwCnL6wfBtccmBCnWhsLvMYEPjuNJlxhzdm OzzAXf3aZs+H0y8o6b/fsaJxWXvBH3u6f+s39MwO+C1Nw+RHUyzJKvpPO w==; IronPort-SDR: uUg71owtICRhl3Wuv/4ZVdJE32HTSGLPdEL/nTOn2y8zMq8L5Ui7T0HqfADH6A0SRsO81r3vPo zlKlNqE7P68U9lOzJ8JxGhEDgXvx90ztwc1VFmCgxsSDX4TX/aHQv0HUCznS6oqRJY1eC+1e7C rMzQITD7wElxYygqW2WTjHNKmsbxk+dBuXbH8ZWf1p2TatgXdYCMQG/FY/cRc/OAEInLHpVPdG +MpfO3z565bngSbKro6DuoujJDpao6YC5PPCuPV/bFk9iqc0fzoZ/ueEkVFR4etPkXcr/AVxKs iI0= X-IronPort-AV: E=Sophos;i="5.78,403,1599548400"; d="scan'208";a="102012176" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 08 Dec 2020 12:37:57 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 8 Dec 2020 12:37:57 -0700 Received: from [127.0.1.1] (10.10.115.15) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Tue, 8 Dec 2020 12:37:56 -0700 Subject: [PATCH V2 14/25] smartpqi: fix driver synchronization issues From: Don Brace To: , , , , , , , , , CC: Date: Tue, 8 Dec 2020 13:37:56 -0600 Message-ID: <160745627652.13450.3399361958779083910.stgit@brunhilda> In-Reply-To: <160745609917.13450.11882890596851148601.stgit@brunhilda> References: <160745609917.13450.11882890596851148601.stgit@brunhilda> User-Agent: StGit/0.23-dirty MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Kevin Barnett * synchronize: LUN resets, shutdowns, suspend, hibernate, OFA, and controller offline events. * prevent I/O during the the above conditions. Reviewed-by: Scott Benesh Reviewed-by: Scott Teel Signed-off-by: Kevin Barnett Signed-off-by: Don Brace --- drivers/scsi/smartpqi/smartpqi.h | 48 - drivers/scsi/smartpqi/smartpqi_init.c | 1157 +++++++++++++-------------------- 2 files changed, 474 insertions(+), 731 deletions(-) diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h index 976bfd8c5192..0b94c755a74c 100644 --- a/drivers/scsi/smartpqi/smartpqi.h +++ b/drivers/scsi/smartpqi/smartpqi.h @@ -130,9 +130,12 @@ struct pqi_iu_header { /* of this header */ __le16 response_queue_id; /* specifies the OQ where the */ /* response IU is to be delivered */ - u8 work_area[2]; /* reserved for driver use */ + u16 driver_flags; /* reserved for driver use */ }; +/* manifest constants for pqi_iu_header.driver_flags */ +#define PQI_DRIVER_NONBLOCKABLE_REQUEST 0x1 + /* * According to the PQI spec, the IU header is only the first 4 bytes of our * pqi_iu_header structure. @@ -508,10 +511,6 @@ struct pqi_vendor_general_response { #define PQI_OFA_SIGNATURE "OFA_QRM" #define PQI_OFA_MAX_SG_DESCRIPTORS 64 -#define PQI_OFA_MEMORY_DESCRIPTOR_LENGTH \ - (offsetof(struct pqi_ofa_memory, sg_descriptor) + \ - (PQI_OFA_MAX_SG_DESCRIPTORS * sizeof(struct pqi_sg_descriptor))) - struct pqi_ofa_memory { __le64 signature; /* "OFA_QRM" */ __le16 version; /* version of this struct (1 = 1st version) */ @@ -519,7 +518,7 @@ struct pqi_ofa_memory { __le32 bytes_allocated; /* total allocated memory in bytes */ __le16 num_memory_descriptors; u8 reserved1[2]; - struct pqi_sg_descriptor sg_descriptor[1]; + struct pqi_sg_descriptor sg_descriptor[PQI_OFA_MAX_SG_DESCRIPTORS]; }; struct pqi_aio_error_info { @@ -850,7 +849,8 @@ struct pqi_config_table_firmware_features { #define PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT 13 #define PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT 14 #define PQI_FIRMWARE_FEATURE_RAID_BYPASS_ON_ENCRYPTED_NVME 15 -#define PQI_FIRMWARE_FEATURE_MAXIMUM 15 +#define PQI_FIRMWARE_FEATURE_UNIQUE_WWID_IN_REPORT_PHYS_LUN 16 +#define PQI_FIRMWARE_FEATURE_MAXIMUM 16 struct pqi_config_table_debug { struct pqi_config_table_section_header header; @@ -1071,7 +1071,6 @@ struct pqi_scsi_dev { u8 volume_offline : 1; u8 rescan : 1; bool aio_enabled; /* only valid for physical disks */ - bool in_reset; bool in_remove; bool device_offline; u8 vendor[8]; /* bytes 8-15 of inquiry data */ @@ -1107,6 +1106,7 @@ struct pqi_scsi_dev { struct pqi_stream_data stream_data[NUM_STREAMS_PER_LUN]; atomic_t scsi_cmds_outstanding; atomic_t raid_bypass_cnt; + u8 page_83_identifier[16]; }; /* VPD inquiry pages */ @@ -1212,10 +1212,8 @@ struct pqi_io_request { struct pqi_event { bool pending; u8 event_type; - __le16 event_id; - __le32 additional_event_id; - __le32 ofa_bytes_requested; - __le16 ofa_cancel_reason; + u16 event_id; + u32 additional_event_id; }; #define PQI_RESERVED_IO_SLOTS_LUN_RESET 1 @@ -1287,12 +1285,9 @@ struct pqi_ctrl_info { struct mutex scan_mutex; struct mutex lun_reset_mutex; - struct mutex ofa_mutex; /* serialize ofa */ bool controller_online; bool block_requests; - bool block_device_reset; - bool in_ofa; - bool in_shutdown; + bool scan_blocked; u8 inbound_spanning_supported : 1; u8 outbound_spanning_supported : 1; u8 pqi_mode_enabled : 1; @@ -1300,6 +1295,7 @@ struct pqi_ctrl_info { u8 soft_reset_handshake_supported : 1; u8 raid_iu_timeout_supported : 1; u8 tmf_iu_timeout_supported : 1; + u8 unique_wwid_in_report_phys_lun_supported : 1; u8 enable_r1_writes : 1; u8 enable_r5_writes : 1; u8 enable_r6_writes : 1; @@ -1341,14 +1337,14 @@ struct pqi_ctrl_info { atomic_t num_blocked_threads; wait_queue_head_t block_requests_wait; - struct list_head raid_bypass_retry_list; - spinlock_t raid_bypass_retry_list_lock; - struct work_struct raid_bypass_retry_work; - + struct mutex ofa_mutex; struct pqi_ofa_memory *pqi_ofa_mem_virt_addr; dma_addr_t pqi_ofa_mem_dma_handle; void **pqi_ofa_chunk_virt_addr; - atomic_t sync_cmds_outstanding; + struct work_struct ofa_memory_alloc_work; + struct work_struct ofa_quiesce_work; + u32 ofa_bytes_requested; + u16 ofa_cancel_reason; }; enum pqi_ctrl_mode { @@ -1619,16 +1615,6 @@ struct bmic_diag_options { #pragma pack() -static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info) -{ - atomic_inc(&ctrl_info->num_busy_threads); -} - -static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info) -{ - atomic_dec(&ctrl_info->num_busy_threads); -} - static inline struct pqi_ctrl_info *shost_to_hba(struct Scsi_Host *shost) { void *hostdata = shost_priv(shost); diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 767eb4882b13..af2ef5b5d019 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -45,6 +45,9 @@ #define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor)) +#define PQI_POST_RESET_DELAY_SECS 5 +#define PQI_POST_OFA_RESET_DELAY_UPON_TIMEOUT_SECS 10 + MODULE_AUTHOR("Microsemi"); MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version " DRIVER_VERSION); @@ -54,7 +57,6 @@ MODULE_LICENSE("GPL"); static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info); static void pqi_ctrl_offline_worker(struct work_struct *work); -static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info); static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info); static void pqi_scan_start(struct Scsi_Host *shost); static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, @@ -62,7 +64,7 @@ static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request); static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, struct pqi_iu_header *request, unsigned int flags, - struct pqi_raid_error_info *error_info, unsigned long timeout_msecs); + struct pqi_raid_error_info *error_info); static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, unsigned int cdb_length, struct pqi_queue_group *queue_group, @@ -77,9 +79,8 @@ static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev_raid_map_data *rmd); static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info); static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info); -static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info); -static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, - u32 bytes_requested); +static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info, unsigned int delay_secs); +static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info); static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info); static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info); static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, @@ -245,14 +246,66 @@ static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info, sis_write_driver_scratch(ctrl_info, mode); } +static inline void pqi_ctrl_block_scan(struct pqi_ctrl_info *ctrl_info) +{ + ctrl_info->scan_blocked = true; + mutex_lock(&ctrl_info->scan_mutex); +} + +static inline void pqi_ctrl_unblock_scan(struct pqi_ctrl_info *ctrl_info) +{ + ctrl_info->scan_blocked = false; + mutex_unlock(&ctrl_info->scan_mutex); +} + +static inline bool pqi_ctrl_scan_blocked(struct pqi_ctrl_info *ctrl_info) +{ + return ctrl_info->scan_blocked; +} + static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info) { - ctrl_info->block_device_reset = true; + mutex_lock(&ctrl_info->lun_reset_mutex); +} + +static inline void pqi_ctrl_unblock_device_reset(struct pqi_ctrl_info *ctrl_info) +{ + mutex_unlock(&ctrl_info->lun_reset_mutex); +} + +static inline void pqi_scsi_block_requests(struct pqi_ctrl_info *ctrl_info) +{ + struct Scsi_Host *shost; + unsigned int num_loops; + int msecs_sleep; + + shost = ctrl_info->scsi_host; + + scsi_block_requests(shost); + + num_loops = 0; + msecs_sleep = 20; + while (scsi_host_busy(shost)) { + num_loops++; + if (num_loops == 10) + msecs_sleep = 500; + msleep(msecs_sleep); + } +} + +static inline void pqi_scsi_unblock_requests(struct pqi_ctrl_info *ctrl_info) +{ + scsi_unblock_requests(ctrl_info->scsi_host); +} + +static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info) +{ + atomic_inc(&ctrl_info->num_busy_threads); } -static inline bool pqi_device_reset_blocked(struct pqi_ctrl_info *ctrl_info) +static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info) { - return ctrl_info->block_device_reset; + atomic_dec(&ctrl_info->num_busy_threads); } static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info) @@ -263,44 +316,23 @@ static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info) static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info) { ctrl_info->block_requests = true; - scsi_block_requests(ctrl_info->scsi_host); } static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info) { ctrl_info->block_requests = false; wake_up_all(&ctrl_info->block_requests_wait); - pqi_retry_raid_bypass_requests(ctrl_info); - scsi_unblock_requests(ctrl_info->scsi_host); } -static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info, - unsigned long timeout_msecs) +static void pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info) { - unsigned long remaining_msecs; - if (!pqi_ctrl_blocked(ctrl_info)) - return timeout_msecs; + return; atomic_inc(&ctrl_info->num_blocked_threads); - - if (timeout_msecs == NO_TIMEOUT) { - wait_event(ctrl_info->block_requests_wait, - !pqi_ctrl_blocked(ctrl_info)); - remaining_msecs = timeout_msecs; - } else { - unsigned long remaining_jiffies; - - remaining_jiffies = - wait_event_timeout(ctrl_info->block_requests_wait, - !pqi_ctrl_blocked(ctrl_info), - msecs_to_jiffies(timeout_msecs)); - remaining_msecs = jiffies_to_msecs(remaining_jiffies); - } - + wait_event(ctrl_info->block_requests_wait, + !pqi_ctrl_blocked(ctrl_info)); atomic_dec(&ctrl_info->num_blocked_threads); - - return remaining_msecs; } static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info) @@ -315,34 +347,25 @@ static inline bool pqi_device_offline(struct pqi_scsi_dev *device) return device->device_offline; } -static inline void pqi_device_reset_start(struct pqi_scsi_dev *device) -{ - device->in_reset = true; -} - -static inline void pqi_device_reset_done(struct pqi_scsi_dev *device) -{ - device->in_reset = false; -} - -static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device) +static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info) { - return device->in_reset; + mutex_lock(&ctrl_info->ofa_mutex); } -static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info) +static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info) { - ctrl_info->in_ofa = true; + mutex_unlock(&ctrl_info->ofa_mutex); } -static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info) +static inline void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info) { - ctrl_info->in_ofa = false; + mutex_lock(&ctrl_info->ofa_mutex); + mutex_unlock(&ctrl_info->ofa_mutex); } -static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info) +static inline bool pqi_ofa_in_progress(struct pqi_ctrl_info *ctrl_info) { - return ctrl_info->in_ofa; + return mutex_is_locked(&ctrl_info->ofa_mutex); } static inline void pqi_device_remove_start(struct pqi_scsi_dev *device) @@ -355,14 +378,20 @@ static inline bool pqi_device_in_remove(struct pqi_scsi_dev *device) return device->in_remove; } -static inline void pqi_ctrl_shutdown_start(struct pqi_ctrl_info *ctrl_info) +static inline int pqi_event_type_to_event_index(unsigned int event_type) { - ctrl_info->in_shutdown = true; + int index; + + for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++) + if (event_type == pqi_supported_event_types[index]) + return index; + + return -1; } -static inline bool pqi_ctrl_in_shutdown(struct pqi_ctrl_info *ctrl_info) +static inline bool pqi_is_supported_event(unsigned int event_type) { - return ctrl_info->in_shutdown; + return pqi_event_type_to_event_index(event_type) != -1; } static inline void pqi_schedule_rescan_worker_with_delay(struct pqi_ctrl_info *ctrl_info, @@ -370,8 +399,6 @@ static inline void pqi_schedule_rescan_worker_with_delay(struct pqi_ctrl_info *c { if (pqi_ctrl_offline(ctrl_info)) return; - if (pqi_ctrl_in_ofa(ctrl_info)) - return; schedule_delayed_work(&ctrl_info->rescan_work, delay); } @@ -408,22 +435,15 @@ static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info) static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info) { - if (!ctrl_info->soft_reset_status) - return 0; - return readb(ctrl_info->soft_reset_status); } -static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info, - u8 clear) +static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info) { u8 status; - if (!ctrl_info->soft_reset_status) - return; - status = pqi_read_soft_reset_status(ctrl_info); - status &= ~clear; + status &= ~PQI_SOFT_RESET_ABORT; writeb(status, ctrl_info->soft_reset_status); } @@ -512,6 +532,7 @@ static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info, put_unaligned_be32(cdb_length, &cdb[6]); break; case SA_FLUSH_CACHE: + request->header.driver_flags = PQI_DRIVER_NONBLOCKABLE_REQUEST; request->data_direction = SOP_WRITE_FLAG; cdb[0] = BMIC_WRITE; cdb[6] = BMIC_FLUSH_CACHE; @@ -606,7 +627,7 @@ static void pqi_free_io_request(struct pqi_io_request *io_request) static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd, u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page, - struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) + struct pqi_raid_error_info *error_info) { int rc; struct pqi_raid_path_request request; @@ -618,7 +639,7 @@ static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd, return rc; rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, - error_info, timeout_msecs); + error_info); pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); @@ -631,7 +652,7 @@ static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd, void *buffer, size_t buffer_length) { return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, - buffer, buffer_length, 0, NULL, NO_TIMEOUT); + buffer, buffer_length, 0, NULL); } static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info, @@ -639,7 +660,7 @@ static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info, struct pqi_raid_error_info *error_info) { return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, - buffer, buffer_length, 0, error_info, NO_TIMEOUT); + buffer, buffer_length, 0, error_info); } static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info, @@ -661,7 +682,7 @@ static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info, u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length) { return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr, - buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT); + buffer, buffer_length, vpd_page, NULL); } static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info, @@ -683,8 +704,7 @@ static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info, request.cdb[2] = (u8)bmic_device_index; request.cdb[9] = (u8)(bmic_device_index >> 8); - rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, - 0, NULL, NO_TIMEOUT); + rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL); pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); @@ -741,7 +761,7 @@ static int pqi_get_advanced_raid_bypass_config(struct pqi_ctrl_info *ctrl_info) request.cdb[2] = BMIC_SENSE_FEATURE_IO_PAGE; request.cdb[3] = BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE; - rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL, NO_TIMEOUT); + rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL); pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); @@ -794,13 +814,6 @@ static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info, int rc; struct bmic_flush_cache *flush_cache; - /* - * Don't bother trying to flush the cache if the controller is - * locked up. - */ - if (pqi_ctrl_offline(ctrl_info)) - return -ENXIO; - flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL); if (!flush_cache) return -ENOMEM; @@ -979,9 +992,6 @@ static void pqi_update_time_worker(struct work_struct *work) ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, update_time_work); - if (pqi_ctrl_offline(ctrl_info)) - return; - rc = pqi_write_current_time_to_host_wellness(ctrl_info); if (rc) dev_warn(&ctrl_info->pci_dev->dev, @@ -1271,9 +1281,7 @@ static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info, return -ENOMEM; rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, - device->scsi3addr, raid_map, sizeof(*raid_map), - 0, NULL, NO_TIMEOUT); - + device->scsi3addr, raid_map, sizeof(*raid_map), 0, NULL); if (rc) goto error; @@ -1288,8 +1296,7 @@ static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info, return -ENOMEM; rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, - device->scsi3addr, raid_map, raid_map_size, - 0, NULL, NO_TIMEOUT); + device->scsi3addr, raid_map, raid_map_size, 0, NULL); if (rc) goto error; @@ -1464,6 +1471,9 @@ static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info, sizeof(device->phys_connector)); device->bay = id_phys->phys_bay_in_box; + memcpy(&device->page_83_identifier, &id_phys->page_83_identifier, + sizeof(device->page_83_identifier)); + return 0; } @@ -1970,8 +1980,13 @@ static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info, spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); - if (pqi_ctrl_in_ofa(ctrl_info)) - pqi_ctrl_ofa_done(ctrl_info); + if (pqi_ofa_in_progress(ctrl_info)) { + list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) + if (pqi_is_device_added(device)) + pqi_device_remove_start(device); + pqi_ctrl_unblock_device_reset(ctrl_info); + pqi_scsi_unblock_requests(ctrl_info); + } /* Remove all devices that have gone away. */ list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) { @@ -1993,19 +2008,14 @@ static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info, * Notify the SCSI ML if the queue depth of any existing device has * changed. */ - list_for_each_entry(device, &ctrl_info->scsi_device_list, - scsi_device_list_entry) { - if (device->sdev) { - if (device->queue_depth != - device->advertised_queue_depth) { - device->advertised_queue_depth = device->queue_depth; - scsi_change_queue_depth(device->sdev, - device->advertised_queue_depth); - } - if (device->rescan) { - scsi_rescan_device(&device->sdev->sdev_gendev); - device->rescan = false; - } + list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) { + if (device->sdev && device->queue_depth != device->advertised_queue_depth) { + device->advertised_queue_depth = device->queue_depth; + scsi_change_queue_depth(device->sdev, device->advertised_queue_depth); + } + if (device->rescan) { + scsi_rescan_device(&device->sdev->sdev_gendev); + device->rescan = false; } } @@ -2073,6 +2083,16 @@ static inline bool pqi_expose_device(struct pqi_scsi_dev *device) return !device->is_physical_device || !pqi_skip_device(device->scsi3addr); } +static inline void pqi_set_physical_device_wwid(struct pqi_ctrl_info *ctrl_info, + struct pqi_scsi_dev *device, struct report_phys_lun_extended_entry *phys_lun_ext_entry) +{ + if (ctrl_info->unique_wwid_in_report_phys_lun_supported || + pqi_is_device_with_sas_address(device)) + device->wwid = phys_lun_ext_entry->wwid; + else + device->wwid = cpu_to_be64(get_unaligned_be64(&device->page_83_identifier)); +} + static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) { int i; @@ -2238,7 +2258,7 @@ static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) pqi_assign_bus_target_lun(device); if (device->is_physical_device) { - device->wwid = phys_lun_ext_entry->wwid; + pqi_set_physical_device_wwid(ctrl_info, device, phys_lun_ext_entry); if ((phys_lun_ext_entry->device_flags & CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) && phys_lun_ext_entry->aio_handle) { @@ -2278,21 +2298,27 @@ static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info) { - int rc = 0; + int rc; + int mutex_acquired; if (pqi_ctrl_offline(ctrl_info)) return -ENXIO; - if (!mutex_trylock(&ctrl_info->scan_mutex)) { + mutex_acquired = mutex_trylock(&ctrl_info->scan_mutex); + + if (!mutex_acquired) { + if (pqi_ctrl_scan_blocked(ctrl_info)) + return -EBUSY; pqi_schedule_rescan_worker_delayed(ctrl_info); - rc = -EINPROGRESS; - } else { - rc = pqi_update_scsi_devices(ctrl_info); - if (rc) - pqi_schedule_rescan_worker_delayed(ctrl_info); - mutex_unlock(&ctrl_info->scan_mutex); + return -EINPROGRESS; } + rc = pqi_update_scsi_devices(ctrl_info); + if (rc && !pqi_ctrl_scan_blocked(ctrl_info)) + pqi_schedule_rescan_worker_delayed(ctrl_info); + + mutex_unlock(&ctrl_info->scan_mutex); + return rc; } @@ -2301,8 +2327,6 @@ static void pqi_scan_start(struct Scsi_Host *shost) struct pqi_ctrl_info *ctrl_info; ctrl_info = shost_to_hba(shost); - if (pqi_ctrl_in_ofa(ctrl_info)) - return; pqi_scan_scsi_devices(ctrl_info); } @@ -2319,27 +2343,8 @@ static int pqi_scan_finished(struct Scsi_Host *shost, return !mutex_is_locked(&ctrl_info->scan_mutex); } -static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info) -{ - mutex_lock(&ctrl_info->scan_mutex); - mutex_unlock(&ctrl_info->scan_mutex); -} - -static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info) -{ - mutex_lock(&ctrl_info->lun_reset_mutex); - mutex_unlock(&ctrl_info->lun_reset_mutex); -} - -static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info) -{ - mutex_lock(&ctrl_info->ofa_mutex); - mutex_unlock(&ctrl_info->ofa_mutex); -} - -static inline void pqi_set_encryption_info( - struct pqi_encryption_info *encryption_info, struct raid_map *raid_map, - u64 first_block) +static inline void pqi_set_encryption_info(struct pqi_encryption_info *encryption_info, + struct raid_map *raid_map, u64 first_block) { u32 volume_blk_size; @@ -3245,8 +3250,8 @@ static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info, put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); request.event_type = event->event_type; - request.event_id = event->event_id; - request.additional_event_id = event->additional_event_id; + put_unaligned_le16(event->event_id, &request.event_id); + put_unaligned_le16(event->additional_event_id, &request.additional_event_id); pqi_send_event_ack(ctrl_info, &request, sizeof(request)); } @@ -3257,8 +3262,8 @@ static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info, static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status( struct pqi_ctrl_info *ctrl_info) { - unsigned long timeout; u8 status; + unsigned long timeout; timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies; @@ -3270,120 +3275,169 @@ static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status( if (status & PQI_SOFT_RESET_ABORT) return RESET_ABORT; + if (!sis_is_firmware_running(ctrl_info)) + return RESET_NORESPONSE; + if (time_after(jiffies, timeout)) { - dev_err(&ctrl_info->pci_dev->dev, + dev_warn(&ctrl_info->pci_dev->dev, "timed out waiting for soft reset status\n"); return RESET_TIMEDOUT; } - if (!sis_is_firmware_running(ctrl_info)) - return RESET_NORESPONSE; - ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS); } } -static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info, - enum pqi_soft_reset_status reset_status) +static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info) { int rc; + unsigned int delay_secs; + enum pqi_soft_reset_status reset_status; + + if (ctrl_info->soft_reset_handshake_supported) + reset_status = pqi_poll_for_soft_reset_status(ctrl_info); + else + reset_status = RESET_INITIATE_FIRMWARE; + + pqi_ofa_free_host_buffer(ctrl_info); + + delay_secs = PQI_POST_RESET_DELAY_SECS; switch (reset_status) { - case RESET_INITIATE_DRIVER: case RESET_TIMEDOUT: + delay_secs = PQI_POST_OFA_RESET_DELAY_UPON_TIMEOUT_SECS; + fallthrough; + case RESET_INITIATE_DRIVER: dev_info(&ctrl_info->pci_dev->dev, - "resetting controller %u\n", ctrl_info->ctrl_id); + "Online Firmware Activation: resetting controller\n"); sis_soft_reset(ctrl_info); fallthrough; case RESET_INITIATE_FIRMWARE: - rc = pqi_ofa_ctrl_restart(ctrl_info); - pqi_ofa_free_host_buffer(ctrl_info); + ctrl_info->pqi_mode_enabled = false; + pqi_save_ctrl_mode(ctrl_info, SIS_MODE); + rc = pqi_ofa_ctrl_restart(ctrl_info, delay_secs); + pqi_ctrl_ofa_done(ctrl_info); dev_info(&ctrl_info->pci_dev->dev, - "Online Firmware Activation for controller %u: %s\n", - ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED"); + "Online Firmware Activation: %s\n", + rc == 0 ? "SUCCESS" : "FAILED"); break; case RESET_ABORT: - pqi_ofa_ctrl_unquiesce(ctrl_info); dev_info(&ctrl_info->pci_dev->dev, - "Online Firmware Activation for controller %u: %s\n", - ctrl_info->ctrl_id, "ABORTED"); + "Online Firmware Activation ABORTED\n"); + if (ctrl_info->soft_reset_handshake_supported) + pqi_clear_soft_reset_status(ctrl_info); + pqi_ctrl_ofa_done(ctrl_info); + pqi_ofa_ctrl_unquiesce(ctrl_info); break; case RESET_NORESPONSE: - pqi_ofa_free_host_buffer(ctrl_info); + fallthrough; + default: + dev_err(&ctrl_info->pci_dev->dev, + "unexpected Online Firmware Activation reset status: 0x%x\n", + reset_status); + pqi_ctrl_ofa_done(ctrl_info); + pqi_ofa_ctrl_unquiesce(ctrl_info); pqi_take_ctrl_offline(ctrl_info); break; } } -static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info, - struct pqi_event *event) +static void pqi_ofa_memory_alloc_worker(struct work_struct *work) { - u16 event_id; - enum pqi_soft_reset_status status; + struct pqi_ctrl_info *ctrl_info; - event_id = get_unaligned_le16(&event->event_id); + ctrl_info = container_of(work, struct pqi_ctrl_info, ofa_memory_alloc_work); - mutex_lock(&ctrl_info->ofa_mutex); + pqi_ctrl_ofa_start(ctrl_info); + pqi_ofa_setup_host_buffer(ctrl_info); + pqi_ofa_host_memory_update(ctrl_info); +} - if (event_id == PQI_EVENT_OFA_QUIESCE) { - dev_info(&ctrl_info->pci_dev->dev, - "Received Online Firmware Activation quiesce event for controller %u\n", - ctrl_info->ctrl_id); - pqi_ofa_ctrl_quiesce(ctrl_info); - pqi_acknowledge_event(ctrl_info, event); - if (ctrl_info->soft_reset_handshake_supported) { - status = pqi_poll_for_soft_reset_status(ctrl_info); - pqi_process_soft_reset(ctrl_info, status); - } else { - pqi_process_soft_reset(ctrl_info, - RESET_INITIATE_FIRMWARE); - } +static void pqi_ofa_quiesce_worker(struct work_struct *work) +{ + struct pqi_ctrl_info *ctrl_info; + struct pqi_event *event; - } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { - pqi_acknowledge_event(ctrl_info, event); - pqi_ofa_setup_host_buffer(ctrl_info, - le32_to_cpu(event->ofa_bytes_requested)); - pqi_ofa_host_memory_update(ctrl_info); - } else if (event_id == PQI_EVENT_OFA_CANCELED) { - pqi_ofa_free_host_buffer(ctrl_info); - pqi_acknowledge_event(ctrl_info, event); + ctrl_info = container_of(work, struct pqi_ctrl_info, ofa_quiesce_work); + + event = &ctrl_info->events[pqi_event_type_to_event_index(PQI_EVENT_TYPE_OFA)]; + + pqi_ofa_ctrl_quiesce(ctrl_info); + pqi_acknowledge_event(ctrl_info, event); + pqi_process_soft_reset(ctrl_info); +} + +static bool pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info, + struct pqi_event *event) +{ + bool ack_event; + + ack_event = true; + + switch (event->event_id) { + case PQI_EVENT_OFA_MEMORY_ALLOCATION: + dev_info(&ctrl_info->pci_dev->dev, + "received Online Firmware Activation memory allocation request\n"); + schedule_work(&ctrl_info->ofa_memory_alloc_work); + break; + case PQI_EVENT_OFA_QUIESCE: dev_info(&ctrl_info->pci_dev->dev, - "Online Firmware Activation(%u) cancel reason : %u\n", - ctrl_info->ctrl_id, event->ofa_cancel_reason); + "received Online Firmware Activation quiesce request\n"); + schedule_work(&ctrl_info->ofa_quiesce_work); + ack_event = false; + break; + case PQI_EVENT_OFA_CANCELED: + dev_info(&ctrl_info->pci_dev->dev, + "received Online Firmware Activation cancel request: reason: %u\n", + ctrl_info->ofa_cancel_reason); + pqi_ofa_free_host_buffer(ctrl_info); + pqi_ctrl_ofa_done(ctrl_info); + break; + default: + dev_err(&ctrl_info->pci_dev->dev, + "received unknown Online Firmware Activation request: event ID: %u\n", + event->event_id); + break; } - mutex_unlock(&ctrl_info->ofa_mutex); + return ack_event; } static void pqi_event_worker(struct work_struct *work) { unsigned int i; + bool rescan_needed; struct pqi_ctrl_info *ctrl_info; struct pqi_event *event; + bool ack_event; ctrl_info = container_of(work, struct pqi_ctrl_info, event_work); pqi_ctrl_busy(ctrl_info); - pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT); + pqi_wait_if_ctrl_blocked(ctrl_info); if (pqi_ctrl_offline(ctrl_info)) goto out; - pqi_schedule_rescan_worker_delayed(ctrl_info); - + rescan_needed = false; event = ctrl_info->events; for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) { if (event->pending) { event->pending = false; if (event->event_type == PQI_EVENT_TYPE_OFA) { - pqi_ctrl_unbusy(ctrl_info); - pqi_ofa_process_event(ctrl_info, event); - return; + ack_event = pqi_ofa_process_event(ctrl_info, event); + } else { + ack_event = true; + rescan_needed = true; } - pqi_acknowledge_event(ctrl_info, event); + if (ack_event) + pqi_acknowledge_event(ctrl_info, event); } event++; } + if (rescan_needed) + pqi_schedule_rescan_worker_delayed(ctrl_info); + out: pqi_ctrl_unbusy(ctrl_info); } @@ -3440,37 +3494,18 @@ static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) del_timer_sync(&ctrl_info->heartbeat_timer); } -static inline int pqi_event_type_to_event_index(unsigned int event_type) -{ - int index; - - for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++) - if (event_type == pqi_supported_event_types[index]) - return index; - - return -1; -} - -static inline bool pqi_is_supported_event(unsigned int event_type) -{ - return pqi_event_type_to_event_index(event_type) != -1; -} - -static void pqi_ofa_capture_event_payload(struct pqi_event *event, - struct pqi_event_response *response) +static void pqi_ofa_capture_event_payload(struct pqi_ctrl_info *ctrl_info, + struct pqi_event *event, struct pqi_event_response *response) { - u16 event_id; - - event_id = get_unaligned_le16(&event->event_id); - - if (event->event_type == PQI_EVENT_TYPE_OFA) { - if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { - event->ofa_bytes_requested = - response->data.ofa_memory_allocation.bytes_requested; - } else if (event_id == PQI_EVENT_OFA_CANCELED) { - event->ofa_cancel_reason = - response->data.ofa_cancelled.reason; - } + switch (event->event_id) { + case PQI_EVENT_OFA_MEMORY_ALLOCATION: + ctrl_info->ofa_bytes_requested = + get_unaligned_le32(&response->data.ofa_memory_allocation.bytes_requested); + break; + case PQI_EVENT_OFA_CANCELED: + ctrl_info->ofa_cancel_reason = + get_unaligned_le16(&response->data.ofa_cancelled.reason); + break; } } @@ -3504,17 +3539,17 @@ static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) num_events++; response = event_queue->oq_element_array + (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH); - event_index = - pqi_event_type_to_event_index(response->event_type); + event_index = pqi_event_type_to_event_index(response->event_type); if (event_index >= 0 && response->request_acknowledge) { event = &ctrl_info->events[event_index]; event->pending = true; event->event_type = response->event_type; - event->event_id = response->event_id; - event->additional_event_id = response->additional_event_id; + event->event_id = get_unaligned_le16(&response->event_id); + event->additional_event_id = + get_unaligned_le32(&response->additional_event_id); if (event->event_type == PQI_EVENT_TYPE_OFA) - pqi_ofa_capture_event_payload(event, response); + pqi_ofa_capture_event_payload(ctrl_info, event, response); } oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS; @@ -3531,8 +3566,7 @@ static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) #define PQI_LEGACY_INTX_MASK 0x1 -static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, - bool enable_intx) +static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, bool enable_intx) { u32 intx_mask; struct pqi_device_registers __iomem *pqi_registers; @@ -4210,59 +4244,36 @@ static int pqi_process_raid_io_error_synchronous( return rc; } +static inline bool pqi_is_blockable_request(struct pqi_iu_header *request) +{ + return (request->driver_flags & PQI_DRIVER_NONBLOCKABLE_REQUEST) == 0; +} + static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, struct pqi_iu_header *request, unsigned int flags, - struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) + struct pqi_raid_error_info *error_info) { int rc = 0; struct pqi_io_request *io_request; - unsigned long start_jiffies; - unsigned long msecs_blocked; size_t iu_length; DECLARE_COMPLETION_ONSTACK(wait); - /* - * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value - * are mutually exclusive. - */ - if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) { if (down_interruptible(&ctrl_info->sync_request_sem)) return -ERESTARTSYS; } else { - if (timeout_msecs == NO_TIMEOUT) { - down(&ctrl_info->sync_request_sem); - } else { - start_jiffies = jiffies; - if (down_timeout(&ctrl_info->sync_request_sem, - msecs_to_jiffies(timeout_msecs))) - return -ETIMEDOUT; - msecs_blocked = - jiffies_to_msecs(jiffies - start_jiffies); - if (msecs_blocked >= timeout_msecs) { - rc = -ETIMEDOUT; - goto out; - } - timeout_msecs -= msecs_blocked; - } + down(&ctrl_info->sync_request_sem); } pqi_ctrl_busy(ctrl_info); - timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs); - if (timeout_msecs == 0) { - pqi_ctrl_unbusy(ctrl_info); - rc = -ETIMEDOUT; - goto out; - } + if (pqi_is_blockable_request(request)) + pqi_wait_if_ctrl_blocked(ctrl_info); if (pqi_ctrl_offline(ctrl_info)) { - pqi_ctrl_unbusy(ctrl_info); rc = -ENXIO; goto out; } - atomic_inc(&ctrl_info->sync_cmds_outstanding); - io_request = pqi_alloc_io_request(ctrl_info); put_unaligned_le16(io_request->index, @@ -4282,18 +4293,7 @@ static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, io_request); - pqi_ctrl_unbusy(ctrl_info); - - if (timeout_msecs == NO_TIMEOUT) { - pqi_wait_for_completion_io(ctrl_info, &wait); - } else { - if (!wait_for_completion_io_timeout(&wait, - msecs_to_jiffies(timeout_msecs))) { - dev_warn(&ctrl_info->pci_dev->dev, - "command timed out\n"); - rc = -ETIMEDOUT; - } - } + pqi_wait_for_completion_io(ctrl_info, &wait); if (error_info) { if (io_request->error_info) @@ -4306,8 +4306,8 @@ static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, pqi_free_io_request(io_request); - atomic_dec(&ctrl_info->sync_cmds_outstanding); out: + pqi_ctrl_unbusy(ctrl_info); up(&ctrl_info->sync_request_sem); return rc; @@ -4344,8 +4344,7 @@ static int pqi_submit_admin_request_synchronous( rc = pqi_poll_for_admin_response(ctrl_info, response); if (rc == 0) - rc = pqi_validate_admin_response(response, - request->function_code); + rc = pqi_validate_admin_response(response, request->function_code); return rc; } @@ -4715,7 +4714,7 @@ static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info, goto out; rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, - 0, NULL, NO_TIMEOUT); + 0, NULL); pqi_pci_unmap(ctrl_info->pci_dev, request.data.report_event_configuration.sg_descriptors, 1, @@ -4751,7 +4750,7 @@ static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info, goto out; rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, - NULL, NO_TIMEOUT); + NULL); pqi_pci_unmap(ctrl_info->pci_dev, request.data.report_event_configuration.sg_descriptors, 1, @@ -5271,12 +5270,6 @@ static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, device, scmd, queue_group); } -static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info) -{ - if (!pqi_ctrl_blocked(ctrl_info)) - schedule_work(&ctrl_info->raid_bypass_retry_work); -} - static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) { struct scsi_cmnd *scmd; @@ -5293,7 +5286,7 @@ static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) return false; device = scmd->device->hostdata; - if (pqi_device_offline(device)) + if (pqi_device_offline(device) || pqi_device_in_remove(device)) return false; ctrl_info = shost_to_hba(scmd->device->host); @@ -5303,155 +5296,26 @@ static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) return true; } -static inline void pqi_add_to_raid_bypass_retry_list( - struct pqi_ctrl_info *ctrl_info, - struct pqi_io_request *io_request, bool at_head) -{ - unsigned long flags; - - spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); - if (at_head) - list_add(&io_request->request_list_entry, - &ctrl_info->raid_bypass_retry_list); - else - list_add_tail(&io_request->request_list_entry, - &ctrl_info->raid_bypass_retry_list); - spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); -} - -static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request, +static void pqi_aio_io_complete(struct pqi_io_request *io_request, void *context) { struct scsi_cmnd *scmd; scmd = io_request->scmd; + scsi_dma_unmap(scmd); + if (io_request->status == -EAGAIN || + pqi_raid_bypass_retry_needed(io_request)) + set_host_byte(scmd, DID_IMM_RETRY); pqi_free_io_request(io_request); pqi_scsi_done(scmd); } -static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request) +static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, + struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, + struct pqi_queue_group *queue_group) { - struct scsi_cmnd *scmd; - struct pqi_ctrl_info *ctrl_info; - - io_request->io_complete_callback = pqi_queued_raid_bypass_complete; - scmd = io_request->scmd; - scmd->result = 0; - ctrl_info = shost_to_hba(scmd->device->host); - - pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false); - pqi_schedule_bypass_retry(ctrl_info); -} - -static int pqi_retry_raid_bypass(struct pqi_io_request *io_request) -{ - struct scsi_cmnd *scmd; - struct pqi_scsi_dev *device; - struct pqi_ctrl_info *ctrl_info; - struct pqi_queue_group *queue_group; - - scmd = io_request->scmd; - device = scmd->device->hostdata; - if (pqi_device_in_reset(device)) { - pqi_free_io_request(io_request); - set_host_byte(scmd, DID_RESET); - pqi_scsi_done(scmd); - return 0; - } - - ctrl_info = shost_to_hba(scmd->device->host); - queue_group = io_request->queue_group; - - pqi_reinit_io_request(io_request); - - return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, - device, scmd, queue_group); -} - -static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request( - struct pqi_ctrl_info *ctrl_info) -{ - unsigned long flags; - struct pqi_io_request *io_request; - - spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); - io_request = list_first_entry_or_null( - &ctrl_info->raid_bypass_retry_list, - struct pqi_io_request, request_list_entry); - if (io_request) - list_del(&io_request->request_list_entry); - spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); - - return io_request; -} - -static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info) -{ - int rc; - struct pqi_io_request *io_request; - - pqi_ctrl_busy(ctrl_info); - - while (1) { - if (pqi_ctrl_blocked(ctrl_info)) - break; - io_request = pqi_next_queued_raid_bypass_request(ctrl_info); - if (!io_request) - break; - rc = pqi_retry_raid_bypass(io_request); - if (rc) { - pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, - true); - pqi_schedule_bypass_retry(ctrl_info); - break; - } - } - - pqi_ctrl_unbusy(ctrl_info); -} - -static void pqi_raid_bypass_retry_worker(struct work_struct *work) -{ - struct pqi_ctrl_info *ctrl_info; - - ctrl_info = container_of(work, struct pqi_ctrl_info, - raid_bypass_retry_work); - pqi_retry_raid_bypass_requests(ctrl_info); -} - -static void pqi_clear_all_queued_raid_bypass_retries( - struct pqi_ctrl_info *ctrl_info) -{ - unsigned long flags; - - spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); - INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); - spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); -} - -static void pqi_aio_io_complete(struct pqi_io_request *io_request, - void *context) -{ - struct scsi_cmnd *scmd; - - scmd = io_request->scmd; - scsi_dma_unmap(scmd); - if (io_request->status == -EAGAIN) - set_host_byte(scmd, DID_IMM_RETRY); - else if (pqi_raid_bypass_retry_needed(io_request)) { - pqi_queue_raid_bypass_retry(io_request); - return; - } - pqi_free_io_request(io_request); - pqi_scsi_done(scmd); -} - -static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, - struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, - struct pqi_queue_group *queue_group) -{ - return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle, - scmd->cmnd, scmd->cmd_len, queue_group, NULL, false); + return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle, + scmd->cmnd, scmd->cmd_len, queue_group, NULL, false); } static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, @@ -5692,6 +5556,14 @@ static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info, return hw_queue; } +static inline bool pqi_is_bypass_eligible_request(struct scsi_cmnd *scmd) +{ + if (blk_rq_is_passthrough(scmd->request)) + return false; + + return scmd->retries == 0; +} + /* * This function gets called just before we hand the completed SCSI request * back to the SML. @@ -5800,7 +5672,6 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scm bool raid_bypassed; device = scmd->device->hostdata; - ctrl_info = shost_to_hba(shost); if (!device) { set_host_byte(scmd, DID_NO_CONNECT); @@ -5810,15 +5681,15 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scm atomic_inc(&device->scsi_cmds_outstanding); + ctrl_info = shost_to_hba(shost); + if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(device)) { set_host_byte(scmd, DID_NO_CONNECT); pqi_scsi_done(scmd); return 0; } - pqi_ctrl_busy(ctrl_info); - if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) || - pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) { + if (pqi_ctrl_blocked(ctrl_info)) { rc = SCSI_MLQUEUE_HOST_BUSY; goto out; } @@ -5835,13 +5706,12 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scm if (pqi_is_logical_device(device)) { raid_bypassed = false; if (device->raid_bypass_enabled && - !blk_rq_is_passthrough(scmd->request)) { - if (!pqi_is_parity_write_stream(ctrl_info, scmd)) { - rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); - if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) { - raid_bypassed = true; - atomic_inc(&device->raid_bypass_cnt); - } + pqi_is_bypass_eligible_request(scmd) && + !pqi_is_parity_write_stream(ctrl_info, scmd)) { + rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); + if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) { + raid_bypassed = true; + atomic_inc(&device->raid_bypass_cnt); } } if (!raid_bypassed) @@ -5854,7 +5724,6 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scm } out: - pqi_ctrl_unbusy(ctrl_info); if (rc) atomic_dec(&device->scsi_cmds_outstanding); @@ -5964,100 +5833,22 @@ static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, } } -static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info) -{ - unsigned int i; - unsigned int path; - struct pqi_queue_group *queue_group; - unsigned long flags; - struct pqi_io_request *io_request; - struct pqi_io_request *next; - struct scsi_cmnd *scmd; - - for (i = 0; i < ctrl_info->num_queue_groups; i++) { - queue_group = &ctrl_info->queue_groups[i]; - - for (path = 0; path < 2; path++) { - spin_lock_irqsave(&queue_group->submit_lock[path], - flags); - - list_for_each_entry_safe(io_request, next, - &queue_group->request_list[path], - request_list_entry) { - - scmd = io_request->scmd; - if (!scmd) - continue; - - list_del(&io_request->request_list_entry); - set_host_byte(scmd, DID_RESET); - pqi_scsi_done(scmd); - } - - spin_unlock_irqrestore( - &queue_group->submit_lock[path], flags); - } - } -} - static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, unsigned long timeout_secs) { unsigned long timeout; - timeout = (timeout_secs * PQI_HZ) + jiffies; - - while (atomic_read(&device->scsi_cmds_outstanding)) { - pqi_check_ctrl_health(ctrl_info); - if (pqi_ctrl_offline(ctrl_info)) - return -ENXIO; - if (timeout_secs != NO_TIMEOUT) { - if (time_after(jiffies, timeout)) { - dev_err(&ctrl_info->pci_dev->dev, - "timed out waiting for pending IO\n"); - return -ETIMEDOUT; - } - } - usleep_range(1000, 2000); - } - - return 0; -} - -static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, - unsigned long timeout_secs) -{ - bool io_pending; - unsigned long flags; - unsigned long timeout; - struct pqi_scsi_dev *device; timeout = (timeout_secs * PQI_HZ) + jiffies; - while (1) { - io_pending = false; - - spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); - list_for_each_entry(device, &ctrl_info->scsi_device_list, - scsi_device_list_entry) { - if (atomic_read(&device->scsi_cmds_outstanding)) { - io_pending = true; - break; - } - } - spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, - flags); - - if (!io_pending) - break; + while (atomic_read(&device->scsi_cmds_outstanding)) { pqi_check_ctrl_health(ctrl_info); if (pqi_ctrl_offline(ctrl_info)) return -ENXIO; - if (timeout_secs != NO_TIMEOUT) { if (time_after(jiffies, timeout)) { dev_err(&ctrl_info->pci_dev->dev, - "timed out waiting for pending IO\n"); + "timed out waiting for pending I/O\n"); return -ETIMEDOUT; } } @@ -6067,18 +5858,6 @@ static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, return 0; } -static int pqi_ctrl_wait_for_pending_sync_cmds(struct pqi_ctrl_info *ctrl_info) -{ - while (atomic_read(&ctrl_info->sync_cmds_outstanding)) { - pqi_check_ctrl_health(ctrl_info); - if (pqi_ctrl_offline(ctrl_info)) - return -ENXIO; - usleep_range(1000, 2000); - } - - return 0; -} - static void pqi_lun_reset_complete(struct pqi_io_request *io_request, void *context) { @@ -6150,13 +5929,11 @@ static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, return rc; } -/* Performs a reset at the LUN level. */ - #define PQI_LUN_RESET_RETRIES 3 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000 #define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120 -static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info, +static int pqi_lun_reset_with_retries(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device) { int rc; @@ -6182,23 +5959,15 @@ static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, { int rc; - mutex_lock(&ctrl_info->lun_reset_mutex); - pqi_ctrl_block_requests(ctrl_info); pqi_ctrl_wait_until_quiesced(ctrl_info); pqi_fail_io_queued_for_device(ctrl_info, device); rc = pqi_wait_until_inbound_queues_empty(ctrl_info); - pqi_device_reset_start(device); - pqi_ctrl_unblock_requests(ctrl_info); - if (rc) rc = FAILED; else - rc = _pqi_device_reset(ctrl_info, device); - - pqi_device_reset_done(device); - - mutex_unlock(&ctrl_info->lun_reset_mutex); + rc = pqi_lun_reset_with_retries(ctrl_info, device); + pqi_ctrl_unblock_requests(ctrl_info); return rc; } @@ -6214,29 +5983,25 @@ static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) ctrl_info = shost_to_hba(shost); device = scmd->device->hostdata; + mutex_lock(&ctrl_info->lun_reset_mutex); + dev_err(&ctrl_info->pci_dev->dev, "resetting scsi %d:%d:%d:%d\n", shost->host_no, device->bus, device->target, device->lun); pqi_check_ctrl_health(ctrl_info); - if (pqi_ctrl_offline(ctrl_info) || - pqi_device_reset_blocked(ctrl_info)) { + if (pqi_ctrl_offline(ctrl_info)) rc = FAILED; - goto out; - } - - pqi_wait_until_ofa_finished(ctrl_info); - - atomic_inc(&ctrl_info->sync_cmds_outstanding); - rc = pqi_device_reset(ctrl_info, device); - atomic_dec(&ctrl_info->sync_cmds_outstanding); + else + rc = pqi_device_reset(ctrl_info, device); -out: dev_err(&ctrl_info->pci_dev->dev, "reset of scsi %d:%d:%d:%d: %s\n", shost->host_no, device->bus, device->target, device->lun, rc == SUCCESS ? "SUCCESS" : "FAILED"); + mutex_unlock(&ctrl_info->lun_reset_mutex); + return rc; } @@ -6538,7 +6303,7 @@ static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) put_unaligned_le32(iocommand.Request.Timeout, &request.timeout); rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, - PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT); + PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info); if (iocommand.buf_size > 0) pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, @@ -6590,9 +6355,6 @@ static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd, ctrl_info = shost_to_hba(sdev->host); - if (pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) - return -EBUSY; - switch (cmd) { case CCISS_DEREGDISK: case CCISS_REGNEWDISK: @@ -7139,9 +6901,7 @@ static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info) shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info)); if (!shost) { - dev_err(&ctrl_info->pci_dev->dev, - "scsi_host_alloc failed for controller %u\n", - ctrl_info->ctrl_id); + dev_err(&ctrl_info->pci_dev->dev, "scsi_host_alloc failed\n"); return -ENOMEM; } @@ -7399,7 +7159,7 @@ static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info, &request.data.config_table_update.last_section); return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, - 0, NULL, NO_TIMEOUT); + 0, NULL); } static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info, @@ -7477,7 +7237,8 @@ static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info, break; case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE: ctrl_info->soft_reset_handshake_supported = - firmware_feature->enabled; + firmware_feature->enabled && + ctrl_info->soft_reset_status; break; case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT: ctrl_info->raid_iu_timeout_supported = firmware_feature->enabled; @@ -7485,6 +7246,10 @@ static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info, case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT: ctrl_info->tmf_iu_timeout_supported = firmware_feature->enabled; break; + case PQI_FIRMWARE_FEATURE_UNIQUE_WWID_IN_REPORT_PHYS_LUN: + ctrl_info->unique_wwid_in_report_phys_lun_supported = + firmware_feature->enabled; + break; } pqi_firmware_feature_status(ctrl_info, firmware_feature); @@ -7575,6 +7340,11 @@ static struct pqi_firmware_feature pqi_firmware_features[] = { .feature_bit = PQI_FIRMWARE_FEATURE_RAID_BYPASS_ON_ENCRYPTED_NVME, .feature_status = pqi_firmware_feature_status, }, + { + .feature_name = "Unique WWID in Report Physical LUN", + .feature_bit = PQI_FIRMWARE_FEATURE_UNIQUE_WWID_IN_REPORT_PHYS_LUN, + .feature_status = pqi_ctrl_update_feature_flags, + }, }; static void pqi_process_firmware_features( @@ -7659,14 +7429,34 @@ static void pqi_process_firmware_features_section( mutex_unlock(&pqi_firmware_features_mutex); } +/* + * Reset all controller settings that can be initialized during the processing + * of the PQI Configuration Table. + */ + +static void pqi_ctrl_reset_config(struct pqi_ctrl_info *ctrl_info) +{ + ctrl_info->heartbeat_counter = NULL; + ctrl_info->soft_reset_status = NULL; + ctrl_info->soft_reset_handshake_supported = false; + ctrl_info->enable_r1_writes = false; + ctrl_info->enable_r5_writes = false; + ctrl_info->enable_r6_writes = false; + ctrl_info->raid_iu_timeout_supported = false; + ctrl_info->tmf_iu_timeout_supported = false; + ctrl_info->unique_wwid_in_report_phys_lun_supported = false; +} + static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) { u32 table_length; u32 section_offset; + bool firmware_feature_section_present; void __iomem *table_iomem_addr; struct pqi_config_table *config_table; struct pqi_config_table_section_header *section; struct pqi_config_table_section_info section_info; + struct pqi_config_table_section_info feature_section_info; table_length = ctrl_info->config_table_length; if (table_length == 0) @@ -7686,6 +7476,7 @@ static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) table_iomem_addr = ctrl_info->iomem_base + ctrl_info->config_table_offset; memcpy_fromio(config_table, table_iomem_addr, table_length); + firmware_feature_section_present = false; section_info.ctrl_info = ctrl_info; section_offset = get_unaligned_le32(&config_table->first_section_offset); @@ -7698,7 +7489,8 @@ static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) switch (get_unaligned_le16(§ion->section_id)) { case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES: - pqi_process_firmware_features_section(§ion_info); + firmware_feature_section_present = true; + feature_section_info = section_info; break; case PQI_CONFIG_TABLE_SECTION_HEARTBEAT: if (pqi_disable_heartbeat) @@ -7716,13 +7508,21 @@ static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) table_iomem_addr + section_offset + offsetof(struct pqi_config_table_soft_reset, - soft_reset_status); + soft_reset_status); break; } section_offset = get_unaligned_le16(§ion->next_section_offset); } + /* + * We process the firmware feature section after all other sections + * have been processed so that the feature bit callbacks can take + * into account the settings configured by other sections. + */ + if (firmware_feature_section_present) + pqi_process_firmware_features_section(&feature_section_info); + kfree(config_table); return 0; @@ -7770,8 +7570,6 @@ static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info) return pqi_revert_to_sis_mode(ctrl_info); } -#define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000 - static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info) { int rc; @@ -7779,7 +7577,7 @@ static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info) if (reset_devices) { sis_soft_reset(ctrl_info); - msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); + msleep(PQI_POST_RESET_DELAY_SECS * PQI_HZ); } else { rc = pqi_force_sis_mode(ctrl_info); if (rc) @@ -8089,6 +7887,8 @@ static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) ctrl_info->controller_online = true; pqi_ctrl_unblock_requests(ctrl_info); + pqi_ctrl_reset_config(ctrl_info); + rc = pqi_process_config_table(ctrl_info); if (rc) return rc; @@ -8134,7 +7934,8 @@ static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) return rc; } - pqi_schedule_update_time_worker(ctrl_info); + if (pqi_ofa_in_progress(ctrl_info)) + pqi_ctrl_unblock_scan(ctrl_info); pqi_scan_scsi_devices(ctrl_info); @@ -8247,7 +8048,6 @@ static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) INIT_WORK(&ctrl_info->event_work, pqi_event_worker); atomic_set(&ctrl_info->num_interrupts, 0); - atomic_set(&ctrl_info->sync_cmds_outstanding, 0); INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker); INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker); @@ -8255,15 +8055,13 @@ static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0); INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker); + INIT_WORK(&ctrl_info->ofa_memory_alloc_work, pqi_ofa_memory_alloc_worker); + INIT_WORK(&ctrl_info->ofa_quiesce_work, pqi_ofa_quiesce_worker); + sema_init(&ctrl_info->sync_request_sem, PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS); init_waitqueue_head(&ctrl_info->block_requests_wait); - INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); - spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock); - INIT_WORK(&ctrl_info->raid_bypass_retry_work, - pqi_raid_bypass_retry_worker); - ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1; ctrl_info->irq_mode = IRQ_MODE_NONE; ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS; @@ -8328,81 +8126,57 @@ static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info) static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info) { - pqi_cancel_update_time_worker(ctrl_info); - pqi_cancel_rescan_worker(ctrl_info); - pqi_wait_until_lun_reset_finished(ctrl_info); - pqi_wait_until_scan_finished(ctrl_info); - pqi_ctrl_ofa_start(ctrl_info); + pqi_ctrl_block_scan(ctrl_info); + pqi_scsi_block_requests(ctrl_info); + pqi_ctrl_block_device_reset(ctrl_info); pqi_ctrl_block_requests(ctrl_info); pqi_ctrl_wait_until_quiesced(ctrl_info); - pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS); - pqi_fail_io_queued_for_all_devices(ctrl_info); - pqi_wait_until_inbound_queues_empty(ctrl_info); pqi_stop_heartbeat_timer(ctrl_info); - ctrl_info->pqi_mode_enabled = false; - pqi_save_ctrl_mode(ctrl_info, SIS_MODE); } static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info) { - pqi_ofa_free_host_buffer(ctrl_info); - ctrl_info->pqi_mode_enabled = true; - pqi_save_ctrl_mode(ctrl_info, PQI_MODE); - ctrl_info->controller_online = true; - pqi_ctrl_unblock_requests(ctrl_info); pqi_start_heartbeat_timer(ctrl_info); - pqi_schedule_update_time_worker(ctrl_info); - pqi_clear_soft_reset_status(ctrl_info, - PQI_SOFT_RESET_ABORT); - pqi_scan_scsi_devices(ctrl_info); + pqi_ctrl_unblock_requests(ctrl_info); + pqi_ctrl_unblock_device_reset(ctrl_info); + pqi_scsi_unblock_requests(ctrl_info); + pqi_ctrl_unblock_scan(ctrl_info); } -static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, - u32 total_size, u32 chunk_size) +static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, u32 total_size, u32 chunk_size) { - u32 sg_count; - u32 size; int i; - struct pqi_sg_descriptor *mem_descriptor = NULL; + u32 sg_count; struct device *dev; struct pqi_ofa_memory *ofap; - - dev = &ctrl_info->pci_dev->dev; - - sg_count = (total_size + chunk_size - 1); - sg_count /= chunk_size; + struct pqi_sg_descriptor *mem_descriptor; + dma_addr_t dma_handle; ofap = ctrl_info->pqi_ofa_mem_virt_addr; - if (sg_count*chunk_size < total_size) + sg_count = DIV_ROUND_UP(total_size, chunk_size); + if (sg_count == 0 || sg_count > PQI_OFA_MAX_SG_DESCRIPTORS) goto out; - ctrl_info->pqi_ofa_chunk_virt_addr = - kcalloc(sg_count, sizeof(void *), GFP_KERNEL); + ctrl_info->pqi_ofa_chunk_virt_addr = kmalloc_array(sg_count, sizeof(void *), GFP_KERNEL); if (!ctrl_info->pqi_ofa_chunk_virt_addr) goto out; - for (size = 0, i = 0; size < total_size; size += chunk_size, i++) { - dma_addr_t dma_handle; + dev = &ctrl_info->pci_dev->dev; + for (i = 0; i < sg_count; i++) { ctrl_info->pqi_ofa_chunk_virt_addr[i] = - dma_alloc_coherent(dev, chunk_size, &dma_handle, - GFP_KERNEL); - + dma_alloc_coherent(dev, chunk_size, &dma_handle, GFP_KERNEL); if (!ctrl_info->pqi_ofa_chunk_virt_addr[i]) - break; - + goto out_free_chunks; mem_descriptor = &ofap->sg_descriptor[i]; put_unaligned_le64((u64)dma_handle, &mem_descriptor->address); put_unaligned_le32(chunk_size, &mem_descriptor->length); } - if (!size || size < total_size) - goto out_free_chunks; - put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags); put_unaligned_le16(sg_count, &ofap->num_memory_descriptors); - put_unaligned_le32(size, &ofap->bytes_allocated); + put_unaligned_le32(sg_count * chunk_size, &ofap->bytes_allocated); return 0; @@ -8410,82 +8184,87 @@ static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, while (--i >= 0) { mem_descriptor = &ofap->sg_descriptor[i]; dma_free_coherent(dev, chunk_size, - ctrl_info->pqi_ofa_chunk_virt_addr[i], - get_unaligned_le64(&mem_descriptor->address)); + ctrl_info->pqi_ofa_chunk_virt_addr[i], + get_unaligned_le64(&mem_descriptor->address)); } kfree(ctrl_info->pqi_ofa_chunk_virt_addr); out: - put_unaligned_le32 (0, &ofap->bytes_allocated); return -ENOMEM; } static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info) { u32 total_size; + u32 chunk_size; u32 min_chunk_size; - u32 chunk_sz; - total_size = le32_to_cpu( - ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated); - min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS; + if (ctrl_info->ofa_bytes_requested == 0) + return 0; - for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2) - if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz)) + total_size = PAGE_ALIGN(ctrl_info->ofa_bytes_requested); + min_chunk_size = DIV_ROUND_UP(total_size, PQI_OFA_MAX_SG_DESCRIPTORS); + min_chunk_size = PAGE_ALIGN(min_chunk_size); + + for (chunk_size = total_size; chunk_size >= min_chunk_size;) { + if (pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_size) == 0) return 0; + chunk_size /= 2; + chunk_size = PAGE_ALIGN(chunk_size); + } return -ENOMEM; } -static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, - u32 bytes_requested) +static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info) { - struct pqi_ofa_memory *pqi_ofa_memory; struct device *dev; + struct pqi_ofa_memory *ofap; dev = &ctrl_info->pci_dev->dev; - pqi_ofa_memory = dma_alloc_coherent(dev, - PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, - &ctrl_info->pqi_ofa_mem_dma_handle, - GFP_KERNEL); - if (!pqi_ofa_memory) + ofap = dma_alloc_coherent(dev, sizeof(*ofap), + &ctrl_info->pqi_ofa_mem_dma_handle, GFP_KERNEL); + if (!ofap) return; - put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version); - memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE, - sizeof(pqi_ofa_memory->signature)); - pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested); - - ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory; + ctrl_info->pqi_ofa_mem_virt_addr = ofap; if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) { - dev_err(dev, "Failed to allocate host buffer of size = %u", - bytes_requested); + dev_err(dev, + "failed to allocate host buffer for Online Firmware Activation\n"); + dma_free_coherent(dev, sizeof(*ofap), ofap, ctrl_info->pqi_ofa_mem_dma_handle); + ctrl_info->pqi_ofa_mem_virt_addr = NULL; + return; } - return; + put_unaligned_le16(PQI_OFA_VERSION, &ofap->version); + memcpy(&ofap->signature, PQI_OFA_SIGNATURE, sizeof(ofap->signature)); } static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info) { - int i; - struct pqi_sg_descriptor *mem_descriptor; + unsigned int i; + struct device *dev; struct pqi_ofa_memory *ofap; + struct pqi_sg_descriptor *mem_descriptor; + unsigned int num_memory_descriptors; ofap = ctrl_info->pqi_ofa_mem_virt_addr; - if (!ofap) return; - if (!ofap->bytes_allocated) + dev = &ctrl_info->pci_dev->dev; + + if (get_unaligned_le32(&ofap->bytes_allocated) == 0) goto out; mem_descriptor = ofap->sg_descriptor; + num_memory_descriptors = + get_unaligned_le16(&ofap->num_memory_descriptors); - for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors); - i++) { - dma_free_coherent(&ctrl_info->pci_dev->dev, + for (i = 0; i < num_memory_descriptors; i++) { + dma_free_coherent(dev, get_unaligned_le32(&mem_descriptor[i].length), ctrl_info->pqi_ofa_chunk_virt_addr[i], get_unaligned_le64(&mem_descriptor[i].address)); @@ -8493,47 +8272,46 @@ static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info) kfree(ctrl_info->pqi_ofa_chunk_virt_addr); out: - dma_free_coherent(&ctrl_info->pci_dev->dev, - PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap, - ctrl_info->pqi_ofa_mem_dma_handle); + dma_free_coherent(dev, sizeof(*ofap), ofap, + ctrl_info->pqi_ofa_mem_dma_handle); ctrl_info->pqi_ofa_mem_virt_addr = NULL; } static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info) { + u32 buffer_length; struct pqi_vendor_general_request request; - size_t size; struct pqi_ofa_memory *ofap; memset(&request, 0, sizeof(request)); - ofap = ctrl_info->pqi_ofa_mem_virt_addr; - request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE, &request.function_code); + ofap = ctrl_info->pqi_ofa_mem_virt_addr; + if (ofap) { - size = offsetof(struct pqi_ofa_memory, sg_descriptor) + + buffer_length = offsetof(struct pqi_ofa_memory, sg_descriptor) + get_unaligned_le16(&ofap->num_memory_descriptors) * sizeof(struct pqi_sg_descriptor); put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle, &request.data.ofa_memory_allocation.buffer_address); - put_unaligned_le32(size, + put_unaligned_le32(buffer_length, &request.data.ofa_memory_allocation.buffer_length); - } return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, - 0, NULL, NO_TIMEOUT); + 0, NULL); } -static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info) +static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info, unsigned int delay_secs) { - msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); + ssleep(delay_secs); + return pqi_ctrl_init_resume(ctrl_info); } @@ -8591,7 +8369,6 @@ static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info) pqi_cancel_update_time_worker(ctrl_info); pqi_ctrl_wait_until_quiesced(ctrl_info); pqi_fail_all_outstanding_requests(ctrl_info); - pqi_clear_all_queued_raid_bypass_retries(ctrl_info); pqi_ctrl_unblock_requests(ctrl_info); } @@ -8724,24 +8501,12 @@ static void pqi_shutdown(struct pci_dev *pci_dev) return; } - pqi_disable_events(ctrl_info); pqi_wait_until_ofa_finished(ctrl_info); - pqi_cancel_update_time_worker(ctrl_info); - pqi_cancel_rescan_worker(ctrl_info); - pqi_cancel_event_worker(ctrl_info); - - pqi_ctrl_shutdown_start(ctrl_info); - pqi_ctrl_wait_until_quiesced(ctrl_info); - - rc = pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); - if (rc) { - dev_err(&pci_dev->dev, - "wait for pending I/O failed\n"); - return; - } + pqi_scsi_block_requests(ctrl_info); pqi_ctrl_block_device_reset(ctrl_info); - pqi_wait_until_lun_reset_finished(ctrl_info); + pqi_ctrl_block_requests(ctrl_info); + pqi_ctrl_wait_until_quiesced(ctrl_info); /* * Write all data in the controller's battery-backed cache to @@ -8752,15 +8517,6 @@ static void pqi_shutdown(struct pci_dev *pci_dev) dev_err(&pci_dev->dev, "unable to flush controller cache\n"); - pqi_ctrl_block_requests(ctrl_info); - - rc = pqi_ctrl_wait_for_pending_sync_cmds(ctrl_info); - if (rc) { - dev_err(&pci_dev->dev, - "wait for pending sync cmds failed\n"); - return; - } - pqi_crash_if_pending_command(ctrl_info); pqi_reset(ctrl_info); } @@ -8795,19 +8551,18 @@ static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t stat ctrl_info = pci_get_drvdata(pci_dev); - pqi_disable_events(ctrl_info); - pqi_cancel_update_time_worker(ctrl_info); - pqi_cancel_rescan_worker(ctrl_info); - pqi_wait_until_scan_finished(ctrl_info); - pqi_wait_until_lun_reset_finished(ctrl_info); pqi_wait_until_ofa_finished(ctrl_info); - pqi_flush_cache(ctrl_info, SUSPEND); + + pqi_ctrl_block_scan(ctrl_info); + pqi_scsi_block_requests(ctrl_info); + pqi_ctrl_block_device_reset(ctrl_info); pqi_ctrl_block_requests(ctrl_info); pqi_ctrl_wait_until_quiesced(ctrl_info); - pqi_wait_until_inbound_queues_empty(ctrl_info); - pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); + pqi_flush_cache(ctrl_info, SUSPEND); pqi_stop_heartbeat_timer(ctrl_info); + pqi_crash_if_pending_command(ctrl_info); + if (state.event == PM_EVENT_FREEZE) return 0; @@ -8840,8 +8595,10 @@ static __maybe_unused int pqi_resume(struct pci_dev *pci_dev) pci_dev->irq, rc); return rc; } - pqi_start_heartbeat_timer(ctrl_info); + pqi_ctrl_unblock_device_reset(ctrl_info); pqi_ctrl_unblock_requests(ctrl_info); + pqi_scsi_unblock_requests(ctrl_info); + pqi_ctrl_unblock_scan(ctrl_info); return 0; } @@ -9282,7 +9039,7 @@ static void __attribute__((unused)) verify_structures(void) BUILD_BUG_ON(offsetof(struct pqi_iu_header, response_queue_id) != 0x4); BUILD_BUG_ON(offsetof(struct pqi_iu_header, - work_area) != 0x6); + driver_flags) != 0x6); BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8); BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, @@ -9380,7 +9137,7 @@ static void __attribute__((unused)) verify_structures(void) BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, header.iu_length) != 2); BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, - header.work_area) != 6); + header.driver_flags) != 6); BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, request_id) != 8); BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, @@ -9436,7 +9193,7 @@ static void __attribute__((unused)) verify_structures(void) BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, header.iu_length) != 2); BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, - header.work_area) != 6); + header.driver_flags) != 6); BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, request_id) != 8); BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, @@ -9460,7 +9217,7 @@ static void __attribute__((unused)) verify_structures(void) BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, header.response_queue_id) != 4); BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, - header.work_area) != 6); + header.driver_flags) != 6); BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, request_id) != 8); BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, @@ -9489,7 +9246,7 @@ static void __attribute__((unused)) verify_structures(void) BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, header.response_queue_id) != 4); BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, - header.work_area) != 6); + header.driver_flags) != 6); BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, request_id) != 8); BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,