^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Serial Attached SCSI (SAS) Transport Layer initialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <scsi/sas_ata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <scsi/scsi_transport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <scsi/scsi_transport_sas.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "sas_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "../scsi_sas_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) static struct kmem_cache *sas_task_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct kmem_cache *sas_event_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct sas_task *sas_alloc_task(gfp_t flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct sas_task *task = kmem_cache_zalloc(sas_task_cache, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) if (task) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) spin_lock_init(&task->task_state_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) task->task_state_flags = SAS_TASK_STATE_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) return task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) EXPORT_SYMBOL_GPL(sas_alloc_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct sas_task *sas_alloc_slow_task(gfp_t flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct sas_task *task = sas_alloc_task(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct sas_task_slow *slow = kmalloc(sizeof(*slow), flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (!task || !slow) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) kmem_cache_free(sas_task_cache, task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) kfree(slow);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) task->slow_task = slow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) slow->task = task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) timer_setup(&slow->timer, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) init_completion(&slow->completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) EXPORT_SYMBOL_GPL(sas_alloc_slow_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) void sas_free_task(struct sas_task *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (task) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) kfree(task->slow_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) kmem_cache_free(sas_task_cache, task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) EXPORT_SYMBOL_GPL(sas_free_task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /*------------ SAS addr hash -----------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void sas_hash_addr(u8 *hashed, const u8 *sas_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) const u32 poly = 0x00DB2777;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u32 r = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) for (i = 0; i < SAS_ADDR_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) for (b = (SAS_ADDR_SIZE - 1); b >= 0; b--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) r <<= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if ((1 << b) & sas_addr[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (!(r & 0x01000000))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) r ^= poly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) } else if (r & 0x01000000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) r ^= poly;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) hashed[0] = (r >> 16) & 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) hashed[1] = (r >> 8) & 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) hashed[2] = r & 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int sas_register_ha(struct sas_ha_struct *sas_ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) char name[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) mutex_init(&sas_ha->disco_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) spin_lock_init(&sas_ha->phy_port_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) sas_hash_addr(sas_ha->hashed_sas_addr, sas_ha->sas_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) set_bit(SAS_HA_REGISTERED, &sas_ha->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) spin_lock_init(&sas_ha->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) mutex_init(&sas_ha->drain_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) init_waitqueue_head(&sas_ha->eh_wait_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) INIT_LIST_HEAD(&sas_ha->defer_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) INIT_LIST_HEAD(&sas_ha->eh_dev_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) sas_ha->event_thres = SAS_PHY_SHUTDOWN_THRES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) error = sas_register_phys(sas_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) pr_notice("couldn't register sas phys:%d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) error = sas_register_ports(sas_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) pr_notice("couldn't register sas ports:%d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) goto Undo_phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) error = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) snprintf(name, sizeof(name), "%s_event_q", dev_name(sas_ha->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) sas_ha->event_q = create_singlethread_workqueue(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (!sas_ha->event_q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) goto Undo_ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) snprintf(name, sizeof(name), "%s_disco_q", dev_name(sas_ha->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) sas_ha->disco_q = create_singlethread_workqueue(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (!sas_ha->disco_q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) goto Undo_event_q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) INIT_LIST_HEAD(&sas_ha->eh_done_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) INIT_LIST_HEAD(&sas_ha->eh_ata_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) Undo_event_q:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) destroy_workqueue(sas_ha->event_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) Undo_ports:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) sas_unregister_ports(sas_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) Undo_phys:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static void sas_disable_events(struct sas_ha_struct *sas_ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* Set the state to unregistered to avoid further unchained
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * events to be queued, and flush any in-progress drainers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) mutex_lock(&sas_ha->drain_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) spin_lock_irq(&sas_ha->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) clear_bit(SAS_HA_REGISTERED, &sas_ha->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) spin_unlock_irq(&sas_ha->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) __sas_drain_work(sas_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) mutex_unlock(&sas_ha->drain_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) int sas_unregister_ha(struct sas_ha_struct *sas_ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) sas_disable_events(sas_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) sas_unregister_ports(sas_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) /* flush unregistration work */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) mutex_lock(&sas_ha->drain_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) __sas_drain_work(sas_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) mutex_unlock(&sas_ha->drain_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) destroy_workqueue(sas_ha->disco_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) destroy_workqueue(sas_ha->event_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static int sas_get_linkerrors(struct sas_phy *phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (scsi_is_sas_phy_local(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct asd_sas_phy *asd_phy = sas_ha->sas_phy[phy->number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct sas_internal *i =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) to_sas_internal(sas_ha->core.shost->transportt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return i->dft->lldd_control_phy(asd_phy, PHY_FUNC_GET_EVENTS, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return sas_smp_get_phy_events(phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) int sas_try_ata_reset(struct asd_sas_phy *asd_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) struct domain_device *dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) /* try to route user requested link resets through libata */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (asd_phy->port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) dev = asd_phy->port->port_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /* validate that dev has been probed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) dev = sas_find_dev_by_rphy(dev->rphy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (dev && dev_is_sata(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) sas_ata_schedule_reset(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) sas_ata_wait_eh(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * transport_sas_phy_reset - reset a phy and permit libata to manage the link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * phy reset request via sysfs in host workqueue context so we know we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * can block on eh and safely traverse the domain_device topology
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) static int transport_sas_phy_reset(struct sas_phy *phy, int hard_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) enum phy_func reset_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (hard_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) reset_type = PHY_FUNC_HARD_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) reset_type = PHY_FUNC_LINK_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (scsi_is_sas_phy_local(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct asd_sas_phy *asd_phy = sas_ha->sas_phy[phy->number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct sas_internal *i =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) to_sas_internal(sas_ha->core.shost->transportt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (!hard_reset && sas_try_ata_reset(asd_phy) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return i->dft->lldd_control_phy(asd_phy, reset_type, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct sas_rphy *rphy = dev_to_rphy(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct domain_device *ddev = sas_find_dev_by_rphy(rphy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct domain_device *ata_dev = sas_ex_to_ata(ddev, phy->number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) if (ata_dev && !hard_reset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) sas_ata_schedule_reset(ata_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) sas_ata_wait_eh(ata_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return sas_smp_phy_control(ddev, phy->number, reset_type, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static int sas_phy_enable(struct sas_phy *phy, int enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) enum phy_func cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) cmd = PHY_FUNC_LINK_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) cmd = PHY_FUNC_DISABLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (scsi_is_sas_phy_local(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct asd_sas_phy *asd_phy = sas_ha->sas_phy[phy->number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) struct sas_internal *i =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) to_sas_internal(sas_ha->core.shost->transportt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ret = transport_sas_phy_reset(phy, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) ret = i->dft->lldd_control_phy(asd_phy, cmd, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct sas_rphy *rphy = dev_to_rphy(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct domain_device *ddev = sas_find_dev_by_rphy(rphy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) ret = transport_sas_phy_reset(phy, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) ret = sas_smp_phy_control(ddev, phy->number, cmd, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) int sas_phy_reset(struct sas_phy *phy, int hard_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) enum phy_func reset_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (!phy->enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (hard_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) reset_type = PHY_FUNC_HARD_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) reset_type = PHY_FUNC_LINK_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (scsi_is_sas_phy_local(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct asd_sas_phy *asd_phy = sas_ha->sas_phy[phy->number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct sas_internal *i =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) to_sas_internal(sas_ha->core.shost->transportt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) ret = i->dft->lldd_control_phy(asd_phy, reset_type, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct sas_rphy *rphy = dev_to_rphy(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) struct domain_device *ddev = sas_find_dev_by_rphy(rphy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) ret = sas_smp_phy_control(ddev, phy->number, reset_type, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) int sas_set_phy_speed(struct sas_phy *phy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct sas_phy_linkrates *rates)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if ((rates->minimum_linkrate &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) rates->minimum_linkrate > phy->maximum_linkrate) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) (rates->maximum_linkrate &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) rates->maximum_linkrate < phy->minimum_linkrate))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) if (rates->minimum_linkrate &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) rates->minimum_linkrate < phy->minimum_linkrate_hw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) rates->minimum_linkrate = phy->minimum_linkrate_hw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (rates->maximum_linkrate &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) rates->maximum_linkrate > phy->maximum_linkrate_hw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) rates->maximum_linkrate = phy->maximum_linkrate_hw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (scsi_is_sas_phy_local(phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) struct asd_sas_phy *asd_phy = sas_ha->sas_phy[phy->number];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct sas_internal *i =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) to_sas_internal(sas_ha->core.shost->transportt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) ret = i->dft->lldd_control_phy(asd_phy, PHY_FUNC_SET_LINK_RATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) rates);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct sas_rphy *rphy = dev_to_rphy(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct domain_device *ddev = sas_find_dev_by_rphy(rphy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) ret = sas_smp_phy_control(ddev, phy->number,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) PHY_FUNC_LINK_RESET, rates);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) void sas_prep_resume_ha(struct sas_ha_struct *ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) set_bit(SAS_HA_REGISTERED, &ha->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* clear out any stale link events/data from the suspension path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) for (i = 0; i < ha->num_phys; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) struct asd_sas_phy *phy = ha->sas_phy[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) memset(phy->attached_sas_addr, 0, SAS_ADDR_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) phy->frame_rcvd_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) EXPORT_SYMBOL(sas_prep_resume_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static int phys_suspended(struct sas_ha_struct *ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) int i, rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) for (i = 0; i < ha->num_phys; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct asd_sas_phy *phy = ha->sas_phy[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (phy->suspended)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) rc++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) void sas_resume_ha(struct sas_ha_struct *ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) const unsigned long tmo = msecs_to_jiffies(25000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) /* deform ports on phys that did not resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * at this point we may be racing the phy coming back (as posted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) * by the lldd). So we post the event and once we are in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * libsas context check that the phy remains suspended before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * tearing it down.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) i = phys_suspended(ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) dev_info(ha->dev, "waiting up to 25 seconds for %d phy%s to resume\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) i, i > 1 ? "s" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) wait_event_timeout(ha->eh_wait_q, phys_suspended(ha) == 0, tmo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) for (i = 0; i < ha->num_phys; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) struct asd_sas_phy *phy = ha->sas_phy[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (phy->suspended) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) dev_warn(&phy->phy->dev, "resume timeout\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) sas_notify_phy_event(phy, PHYE_RESUME_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) /* all phys are back up or timed out, turn on i/o so we can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * flush out disks that did not return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) scsi_unblock_requests(ha->core.shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) sas_drain_work(ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) EXPORT_SYMBOL(sas_resume_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) void sas_suspend_ha(struct sas_ha_struct *ha)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) sas_disable_events(ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) scsi_block_requests(ha->core.shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) for (i = 0; i < ha->num_phys; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct asd_sas_port *port = ha->sas_port[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) sas_discover_event(port, DISCE_SUSPEND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) /* flush suspend events while unregistered */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) mutex_lock(&ha->drain_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) __sas_drain_work(ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) mutex_unlock(&ha->drain_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) EXPORT_SYMBOL(sas_suspend_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) static void sas_phy_release(struct sas_phy *phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) kfree(phy->hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) phy->hostdata = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static void phy_reset_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) struct sas_phy_data *d = container_of(work, typeof(*d), reset_work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) d->reset_result = transport_sas_phy_reset(d->phy, d->hard_reset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static void phy_enable_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) struct sas_phy_data *d = container_of(work, typeof(*d), enable_work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) d->enable_result = sas_phy_enable(d->phy, d->enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) static int sas_phy_setup(struct sas_phy *phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) struct sas_phy_data *d = kzalloc(sizeof(*d), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) if (!d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) mutex_init(&d->event_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) INIT_SAS_WORK(&d->reset_work, phy_reset_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) INIT_SAS_WORK(&d->enable_work, phy_enable_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) d->phy = phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) phy->hostdata = d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) static int queue_phy_reset(struct sas_phy *phy, int hard_reset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) struct sas_phy_data *d = phy->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (!d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /* libsas workqueue coordinates ata-eh reset with discovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) mutex_lock(&d->event_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) d->reset_result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) d->hard_reset = hard_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) spin_lock_irq(&ha->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) sas_queue_work(ha, &d->reset_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) spin_unlock_irq(&ha->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) rc = sas_drain_work(ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) rc = d->reset_result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) mutex_unlock(&d->event_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) static int queue_phy_enable(struct sas_phy *phy, int enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct sas_phy_data *d = phy->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (!d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) /* libsas workqueue coordinates ata-eh reset with discovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) mutex_lock(&d->event_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) d->enable_result = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) d->enable = enable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) spin_lock_irq(&ha->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) sas_queue_work(ha, &d->enable_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) spin_unlock_irq(&ha->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) rc = sas_drain_work(ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) rc = d->enable_result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) mutex_unlock(&d->event_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) static struct sas_function_template sft = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) .phy_enable = queue_phy_enable,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) .phy_reset = queue_phy_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) .phy_setup = sas_phy_setup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) .phy_release = sas_phy_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) .set_phy_speed = sas_set_phy_speed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) .get_linkerrors = sas_get_linkerrors,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) .smp_handler = sas_smp_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) static inline ssize_t phy_event_threshold_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct Scsi_Host *shost = class_to_shost(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return scnprintf(buf, PAGE_SIZE, "%u\n", sha->event_thres);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) static inline ssize_t phy_event_threshold_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct Scsi_Host *shost = class_to_shost(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) sha->event_thres = simple_strtol(buf, NULL, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) /* threshold cannot be set too small */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (sha->event_thres < 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) sha->event_thres = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) DEVICE_ATTR(phy_event_threshold,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) phy_event_threshold_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) phy_event_threshold_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) EXPORT_SYMBOL_GPL(dev_attr_phy_event_threshold);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) struct scsi_transport_template *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) sas_domain_attach_transport(struct sas_domain_function_template *dft)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) struct scsi_transport_template *stt = sas_attach_transport(&sft);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) struct sas_internal *i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) if (!stt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) return stt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) i = to_sas_internal(stt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) i->dft = dft;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) stt->create_work_queue = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) stt->eh_strategy_handler = sas_scsi_recover_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) return stt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) EXPORT_SYMBOL_GPL(sas_domain_attach_transport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) static struct asd_sas_event *__sas_alloc_event(struct asd_sas_phy *phy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) gfp_t gfp_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) struct asd_sas_event *event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) struct sas_ha_struct *sas_ha = phy->ha;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) struct sas_internal *i =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) to_sas_internal(sas_ha->core.shost->transportt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) event = kmem_cache_zalloc(sas_event_cache, gfp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) if (!event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) atomic_inc(&phy->event_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (atomic_read(&phy->event_nr) > phy->ha->event_thres) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if (i->dft->lldd_control_phy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) if (cmpxchg(&phy->in_shutdown, 0, 1) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) pr_notice("The phy%d bursting events, shut it down.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) phy->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) sas_notify_phy_event_gfp(phy, PHYE_SHUTDOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) gfp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) /* Do not support PHY control, stop allocating events */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) WARN_ONCE(1, "PHY control not supported.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) kmem_cache_free(sas_event_cache, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) atomic_dec(&phy->event_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) event = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) return event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) return __sas_alloc_event(phy, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) struct asd_sas_event *sas_alloc_event_gfp(struct asd_sas_phy *phy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) gfp_t gfp_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) return __sas_alloc_event(phy, gfp_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) void sas_free_event(struct asd_sas_event *event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) struct asd_sas_phy *phy = event->phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) kmem_cache_free(sas_event_cache, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) atomic_dec(&phy->event_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) /* ---------- SAS Class register/unregister ---------- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) static int __init sas_class_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) sas_task_cache = KMEM_CACHE(sas_task, SLAB_HWCACHE_ALIGN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (!sas_task_cache)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) sas_event_cache = KMEM_CACHE(asd_sas_event, SLAB_HWCACHE_ALIGN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) if (!sas_event_cache)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) goto free_task_kmem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) free_task_kmem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) kmem_cache_destroy(sas_task_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) static void __exit sas_class_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) kmem_cache_destroy(sas_task_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) kmem_cache_destroy(sas_event_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) MODULE_AUTHOR("Luben Tuikov <luben_tuikov@adaptec.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) MODULE_DESCRIPTION("SAS Transport Layer");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) module_init(sas_class_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) module_exit(sas_class_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) EXPORT_SYMBOL_GPL(sas_register_ha);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) EXPORT_SYMBOL_GPL(sas_unregister_ha);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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