3223 строки
84 KiB
C
3223 строки
84 KiB
C
/*
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* Copyright (c) 2015 Linaro Ltd.
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* Copyright (c) 2015 Hisilicon Limited.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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#include "hisi_sas.h"
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#define DRV_NAME "hisi_sas"
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#define DEV_IS_GONE(dev) \
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((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
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static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
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u8 *lun, struct hisi_sas_tmf_task *tmf);
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static int
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hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
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struct domain_device *device,
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int abort_flag, int tag);
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static int hisi_sas_softreset_ata_disk(struct domain_device *device);
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static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
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void *funcdata);
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static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
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struct domain_device *device);
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static void hisi_sas_dev_gone(struct domain_device *device);
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u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction)
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{
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switch (fis->command) {
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case ATA_CMD_FPDMA_WRITE:
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case ATA_CMD_FPDMA_READ:
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case ATA_CMD_FPDMA_RECV:
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case ATA_CMD_FPDMA_SEND:
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case ATA_CMD_NCQ_NON_DATA:
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return HISI_SAS_SATA_PROTOCOL_FPDMA;
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case ATA_CMD_DOWNLOAD_MICRO:
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case ATA_CMD_ID_ATA:
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case ATA_CMD_PMP_READ:
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case ATA_CMD_READ_LOG_EXT:
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case ATA_CMD_PIO_READ:
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case ATA_CMD_PIO_READ_EXT:
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case ATA_CMD_PMP_WRITE:
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case ATA_CMD_WRITE_LOG_EXT:
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case ATA_CMD_PIO_WRITE:
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case ATA_CMD_PIO_WRITE_EXT:
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return HISI_SAS_SATA_PROTOCOL_PIO;
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case ATA_CMD_DSM:
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case ATA_CMD_DOWNLOAD_MICRO_DMA:
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case ATA_CMD_PMP_READ_DMA:
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case ATA_CMD_PMP_WRITE_DMA:
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case ATA_CMD_READ:
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case ATA_CMD_READ_EXT:
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case ATA_CMD_READ_LOG_DMA_EXT:
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case ATA_CMD_READ_STREAM_DMA_EXT:
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case ATA_CMD_TRUSTED_RCV_DMA:
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case ATA_CMD_TRUSTED_SND_DMA:
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case ATA_CMD_WRITE:
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case ATA_CMD_WRITE_EXT:
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case ATA_CMD_WRITE_FUA_EXT:
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case ATA_CMD_WRITE_QUEUED:
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case ATA_CMD_WRITE_LOG_DMA_EXT:
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case ATA_CMD_WRITE_STREAM_DMA_EXT:
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case ATA_CMD_ZAC_MGMT_IN:
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return HISI_SAS_SATA_PROTOCOL_DMA;
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case ATA_CMD_CHK_POWER:
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case ATA_CMD_DEV_RESET:
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case ATA_CMD_EDD:
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case ATA_CMD_FLUSH:
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case ATA_CMD_FLUSH_EXT:
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case ATA_CMD_VERIFY:
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case ATA_CMD_VERIFY_EXT:
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case ATA_CMD_SET_FEATURES:
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case ATA_CMD_STANDBY:
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case ATA_CMD_STANDBYNOW1:
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case ATA_CMD_ZAC_MGMT_OUT:
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return HISI_SAS_SATA_PROTOCOL_NONDATA;
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case ATA_CMD_SET_MAX:
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switch (fis->features) {
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case ATA_SET_MAX_PASSWD:
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case ATA_SET_MAX_LOCK:
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return HISI_SAS_SATA_PROTOCOL_PIO;
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case ATA_SET_MAX_PASSWD_DMA:
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case ATA_SET_MAX_UNLOCK_DMA:
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return HISI_SAS_SATA_PROTOCOL_DMA;
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default:
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return HISI_SAS_SATA_PROTOCOL_NONDATA;
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}
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default:
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{
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if (direction == DMA_NONE)
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return HISI_SAS_SATA_PROTOCOL_NONDATA;
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return HISI_SAS_SATA_PROTOCOL_PIO;
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}
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}
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}
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EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol);
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void hisi_sas_sata_done(struct sas_task *task,
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struct hisi_sas_slot *slot)
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{
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struct task_status_struct *ts = &task->task_status;
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struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf;
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struct hisi_sas_status_buffer *status_buf =
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hisi_sas_status_buf_addr_mem(slot);
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u8 *iu = &status_buf->iu[0];
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struct dev_to_host_fis *d2h = (struct dev_to_host_fis *)iu;
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resp->frame_len = sizeof(struct dev_to_host_fis);
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memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis));
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ts->buf_valid_size = sizeof(*resp);
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}
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EXPORT_SYMBOL_GPL(hisi_sas_sata_done);
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int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag)
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{
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struct ata_queued_cmd *qc = task->uldd_task;
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if (qc) {
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if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
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qc->tf.command == ATA_CMD_FPDMA_READ) {
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*tag = qc->tag;
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return 1;
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}
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag);
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/*
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* This function assumes linkrate mask fits in 8 bits, which it
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* does for all HW versions supported.
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*/
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u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max)
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{
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u8 rate = 0;
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int i;
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max -= SAS_LINK_RATE_1_5_GBPS;
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for (i = 0; i <= max; i++)
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rate |= 1 << (i * 2);
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return rate;
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}
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EXPORT_SYMBOL_GPL(hisi_sas_get_prog_phy_linkrate_mask);
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static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
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{
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return device->port->ha->lldd_ha;
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}
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struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port)
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{
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return container_of(sas_port, struct hisi_sas_port, sas_port);
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}
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EXPORT_SYMBOL_GPL(to_hisi_sas_port);
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void hisi_sas_stop_phys(struct hisi_hba *hisi_hba)
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{
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int phy_no;
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for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++)
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hisi_hba->hw->phy_disable(hisi_hba, phy_no);
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}
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EXPORT_SYMBOL_GPL(hisi_sas_stop_phys);
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static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
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{
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void *bitmap = hisi_hba->slot_index_tags;
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clear_bit(slot_idx, bitmap);
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}
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static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
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{
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unsigned long flags;
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if (hisi_hba->hw->slot_index_alloc || (slot_idx >=
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hisi_hba->hw->max_command_entries - HISI_SAS_RESERVED_IPTT_CNT)) {
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spin_lock_irqsave(&hisi_hba->lock, flags);
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hisi_sas_slot_index_clear(hisi_hba, slot_idx);
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spin_unlock_irqrestore(&hisi_hba->lock, flags);
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}
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}
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static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
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{
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void *bitmap = hisi_hba->slot_index_tags;
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set_bit(slot_idx, bitmap);
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}
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static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba,
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struct scsi_cmnd *scsi_cmnd)
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{
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int index;
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void *bitmap = hisi_hba->slot_index_tags;
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unsigned long flags;
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if (scsi_cmnd)
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return scsi_cmnd->request->tag;
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spin_lock_irqsave(&hisi_hba->lock, flags);
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index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
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hisi_hba->last_slot_index + 1);
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if (index >= hisi_hba->slot_index_count) {
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index = find_next_zero_bit(bitmap,
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hisi_hba->slot_index_count,
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hisi_hba->hw->max_command_entries -
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HISI_SAS_RESERVED_IPTT_CNT);
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if (index >= hisi_hba->slot_index_count) {
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spin_unlock_irqrestore(&hisi_hba->lock, flags);
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return -SAS_QUEUE_FULL;
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}
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}
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hisi_sas_slot_index_set(hisi_hba, index);
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hisi_hba->last_slot_index = index;
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spin_unlock_irqrestore(&hisi_hba->lock, flags);
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return index;
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}
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static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
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{
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int i;
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for (i = 0; i < hisi_hba->slot_index_count; ++i)
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hisi_sas_slot_index_clear(hisi_hba, i);
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}
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void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
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struct hisi_sas_slot *slot)
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{
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unsigned long flags;
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int device_id = slot->device_id;
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struct hisi_sas_device *sas_dev = &hisi_hba->devices[device_id];
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if (task) {
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struct device *dev = hisi_hba->dev;
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if (!task->lldd_task)
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return;
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task->lldd_task = NULL;
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if (!sas_protocol_ata(task->task_proto)) {
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struct sas_ssp_task *ssp_task = &task->ssp_task;
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struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
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if (slot->n_elem)
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dma_unmap_sg(dev, task->scatter,
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task->num_scatter,
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task->data_dir);
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if (slot->n_elem_dif)
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dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
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scsi_prot_sg_count(scsi_cmnd),
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task->data_dir);
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}
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}
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spin_lock_irqsave(&sas_dev->lock, flags);
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list_del_init(&slot->entry);
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spin_unlock_irqrestore(&sas_dev->lock, flags);
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memset(slot, 0, offsetof(struct hisi_sas_slot, buf));
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hisi_sas_slot_index_free(hisi_hba, slot->idx);
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}
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EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
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static void hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
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struct hisi_sas_slot *slot)
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{
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hisi_hba->hw->prep_smp(hisi_hba, slot);
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}
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static void hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
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struct hisi_sas_slot *slot)
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{
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hisi_hba->hw->prep_ssp(hisi_hba, slot);
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}
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static void hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
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struct hisi_sas_slot *slot)
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{
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hisi_hba->hw->prep_stp(hisi_hba, slot);
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}
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static void hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
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struct hisi_sas_slot *slot,
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int device_id, int abort_flag, int tag_to_abort)
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{
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hisi_hba->hw->prep_abort(hisi_hba, slot,
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device_id, abort_flag, tag_to_abort);
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}
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static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba,
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struct sas_task *task, int n_elem,
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int n_elem_req, int n_elem_resp)
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{
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struct device *dev = hisi_hba->dev;
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if (!sas_protocol_ata(task->task_proto)) {
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if (task->num_scatter) {
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if (n_elem)
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dma_unmap_sg(dev, task->scatter,
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task->num_scatter,
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task->data_dir);
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} else if (task->task_proto & SAS_PROTOCOL_SMP) {
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if (n_elem_req)
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dma_unmap_sg(dev, &task->smp_task.smp_req,
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1, DMA_TO_DEVICE);
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if (n_elem_resp)
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dma_unmap_sg(dev, &task->smp_task.smp_resp,
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1, DMA_FROM_DEVICE);
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}
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}
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}
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static int hisi_sas_dma_map(struct hisi_hba *hisi_hba,
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struct sas_task *task, int *n_elem,
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int *n_elem_req, int *n_elem_resp)
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{
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struct device *dev = hisi_hba->dev;
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int rc;
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if (sas_protocol_ata(task->task_proto)) {
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*n_elem = task->num_scatter;
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} else {
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unsigned int req_len, resp_len;
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if (task->num_scatter) {
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*n_elem = dma_map_sg(dev, task->scatter,
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task->num_scatter, task->data_dir);
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if (!*n_elem) {
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rc = -ENOMEM;
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goto prep_out;
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}
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} else if (task->task_proto & SAS_PROTOCOL_SMP) {
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*n_elem_req = dma_map_sg(dev, &task->smp_task.smp_req,
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1, DMA_TO_DEVICE);
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if (!*n_elem_req) {
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rc = -ENOMEM;
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goto prep_out;
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}
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req_len = sg_dma_len(&task->smp_task.smp_req);
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if (req_len & 0x3) {
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rc = -EINVAL;
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goto err_out_dma_unmap;
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}
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*n_elem_resp = dma_map_sg(dev, &task->smp_task.smp_resp,
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1, DMA_FROM_DEVICE);
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if (!*n_elem_resp) {
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rc = -ENOMEM;
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goto err_out_dma_unmap;
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}
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resp_len = sg_dma_len(&task->smp_task.smp_resp);
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if (resp_len & 0x3) {
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rc = -EINVAL;
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goto err_out_dma_unmap;
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}
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}
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}
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if (*n_elem > HISI_SAS_SGE_PAGE_CNT) {
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dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT",
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*n_elem);
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rc = -EINVAL;
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goto err_out_dma_unmap;
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}
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return 0;
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err_out_dma_unmap:
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/* It would be better to call dma_unmap_sg() here, but it's messy */
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hisi_sas_dma_unmap(hisi_hba, task, *n_elem,
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*n_elem_req, *n_elem_resp);
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prep_out:
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return rc;
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}
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static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba,
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struct sas_task *task, int n_elem_dif)
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{
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struct device *dev = hisi_hba->dev;
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if (n_elem_dif) {
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struct sas_ssp_task *ssp_task = &task->ssp_task;
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struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
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dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
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scsi_prot_sg_count(scsi_cmnd),
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task->data_dir);
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}
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}
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static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba,
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int *n_elem_dif, struct sas_task *task)
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{
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struct device *dev = hisi_hba->dev;
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struct sas_ssp_task *ssp_task;
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struct scsi_cmnd *scsi_cmnd;
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int rc;
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if (task->num_scatter) {
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ssp_task = &task->ssp_task;
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scsi_cmnd = ssp_task->cmd;
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if (scsi_prot_sg_count(scsi_cmnd)) {
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*n_elem_dif = dma_map_sg(dev,
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scsi_prot_sglist(scsi_cmnd),
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scsi_prot_sg_count(scsi_cmnd),
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task->data_dir);
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if (!*n_elem_dif)
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return -ENOMEM;
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if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) {
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dev_err(dev, "task prep: n_elem_dif(%d) too large\n",
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*n_elem_dif);
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rc = -EINVAL;
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goto err_out_dif_dma_unmap;
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}
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}
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}
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return 0;
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err_out_dif_dma_unmap:
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dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
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scsi_prot_sg_count(scsi_cmnd), task->data_dir);
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return rc;
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}
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static int hisi_sas_task_prep(struct sas_task *task,
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struct hisi_sas_dq **dq_pointer,
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bool is_tmf, struct hisi_sas_tmf_task *tmf,
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int *pass)
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{
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struct domain_device *device = task->dev;
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struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
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struct hisi_sas_device *sas_dev = device->lldd_dev;
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struct hisi_sas_port *port;
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struct hisi_sas_slot *slot;
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struct hisi_sas_cmd_hdr *cmd_hdr_base;
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struct asd_sas_port *sas_port = device->port;
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struct device *dev = hisi_hba->dev;
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|
int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
|
|
int n_elem = 0, n_elem_dif = 0, n_elem_req = 0, n_elem_resp = 0;
|
|
struct hisi_sas_dq *dq;
|
|
unsigned long flags;
|
|
int wr_q_index;
|
|
|
|
if (DEV_IS_GONE(sas_dev)) {
|
|
if (sas_dev)
|
|
dev_info(dev, "task prep: device %d not ready\n",
|
|
sas_dev->device_id);
|
|
else
|
|
dev_info(dev, "task prep: device %016llx not ready\n",
|
|
SAS_ADDR(device->sas_addr));
|
|
|
|
return -ECOMM;
|
|
}
|
|
|
|
if (hisi_hba->reply_map) {
|
|
int cpu = raw_smp_processor_id();
|
|
unsigned int dq_index = hisi_hba->reply_map[cpu];
|
|
|
|
*dq_pointer = dq = &hisi_hba->dq[dq_index];
|
|
} else {
|
|
*dq_pointer = dq = sas_dev->dq;
|
|
}
|
|
|
|
port = to_hisi_sas_port(sas_port);
|
|
if (port && !port->port_attached) {
|
|
dev_info(dev, "task prep: %s port%d not attach device\n",
|
|
(dev_is_sata(device)) ?
|
|
"SATA/STP" : "SAS",
|
|
device->port->id);
|
|
|
|
return -ECOMM;
|
|
}
|
|
|
|
rc = hisi_sas_dma_map(hisi_hba, task, &n_elem,
|
|
&n_elem_req, &n_elem_resp);
|
|
if (rc < 0)
|
|
goto prep_out;
|
|
|
|
if (!sas_protocol_ata(task->task_proto)) {
|
|
rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task);
|
|
if (rc < 0)
|
|
goto err_out_dma_unmap;
|
|
}
|
|
|
|
if (hisi_hba->hw->slot_index_alloc)
|
|
rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
|
|
else {
|
|
struct scsi_cmnd *scsi_cmnd = NULL;
|
|
|
|
if (task->uldd_task) {
|
|
struct ata_queued_cmd *qc;
|
|
|
|
if (dev_is_sata(device)) {
|
|
qc = task->uldd_task;
|
|
scsi_cmnd = qc->scsicmd;
|
|
} else {
|
|
scsi_cmnd = task->uldd_task;
|
|
}
|
|
}
|
|
rc = hisi_sas_slot_index_alloc(hisi_hba, scsi_cmnd);
|
|
}
|
|
if (rc < 0)
|
|
goto err_out_dif_dma_unmap;
|
|
|
|
slot_idx = rc;
|
|
slot = &hisi_hba->slot_info[slot_idx];
|
|
|
|
spin_lock_irqsave(&dq->lock, flags);
|
|
wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
|
|
if (wr_q_index < 0) {
|
|
spin_unlock_irqrestore(&dq->lock, flags);
|
|
rc = -EAGAIN;
|
|
goto err_out_tag;
|
|
}
|
|
|
|
list_add_tail(&slot->delivery, &dq->list);
|
|
spin_unlock_irqrestore(&dq->lock, flags);
|
|
spin_lock_irqsave(&sas_dev->lock, flags);
|
|
list_add_tail(&slot->entry, &sas_dev->list);
|
|
spin_unlock_irqrestore(&sas_dev->lock, flags);
|
|
|
|
dlvry_queue = dq->id;
|
|
dlvry_queue_slot = wr_q_index;
|
|
|
|
slot->device_id = sas_dev->device_id;
|
|
slot->n_elem = n_elem;
|
|
slot->n_elem_dif = n_elem_dif;
|
|
slot->dlvry_queue = dlvry_queue;
|
|
slot->dlvry_queue_slot = dlvry_queue_slot;
|
|
cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
|
|
slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
|
|
slot->task = task;
|
|
slot->port = port;
|
|
slot->tmf = tmf;
|
|
slot->is_internal = is_tmf;
|
|
task->lldd_task = slot;
|
|
|
|
memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
|
|
memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
|
|
memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
|
|
|
|
switch (task->task_proto) {
|
|
case SAS_PROTOCOL_SMP:
|
|
hisi_sas_task_prep_smp(hisi_hba, slot);
|
|
break;
|
|
case SAS_PROTOCOL_SSP:
|
|
hisi_sas_task_prep_ssp(hisi_hba, slot);
|
|
break;
|
|
case SAS_PROTOCOL_SATA:
|
|
case SAS_PROTOCOL_STP:
|
|
case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
|
|
hisi_sas_task_prep_ata(hisi_hba, slot);
|
|
break;
|
|
default:
|
|
dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
|
|
task->task_proto);
|
|
break;
|
|
}
|
|
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
task->task_state_flags |= SAS_TASK_AT_INITIATOR;
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
|
|
++(*pass);
|
|
WRITE_ONCE(slot->ready, 1);
|
|
|
|
return 0;
|
|
|
|
err_out_tag:
|
|
hisi_sas_slot_index_free(hisi_hba, slot_idx);
|
|
err_out_dif_dma_unmap:
|
|
if (!sas_protocol_ata(task->task_proto))
|
|
hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif);
|
|
err_out_dma_unmap:
|
|
hisi_sas_dma_unmap(hisi_hba, task, n_elem,
|
|
n_elem_req, n_elem_resp);
|
|
prep_out:
|
|
dev_err(dev, "task prep: failed[%d]!\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
|
|
bool is_tmf, struct hisi_sas_tmf_task *tmf)
|
|
{
|
|
u32 rc;
|
|
u32 pass = 0;
|
|
unsigned long flags;
|
|
struct hisi_hba *hisi_hba;
|
|
struct device *dev;
|
|
struct domain_device *device = task->dev;
|
|
struct asd_sas_port *sas_port = device->port;
|
|
struct hisi_sas_dq *dq = NULL;
|
|
|
|
if (!sas_port) {
|
|
struct task_status_struct *ts = &task->task_status;
|
|
|
|
ts->resp = SAS_TASK_UNDELIVERED;
|
|
ts->stat = SAS_PHY_DOWN;
|
|
/*
|
|
* libsas will use dev->port, should
|
|
* not call task_done for sata
|
|
*/
|
|
if (device->dev_type != SAS_SATA_DEV)
|
|
task->task_done(task);
|
|
return -ECOMM;
|
|
}
|
|
|
|
hisi_hba = dev_to_hisi_hba(device);
|
|
dev = hisi_hba->dev;
|
|
|
|
if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) {
|
|
if (in_softirq())
|
|
return -EINVAL;
|
|
|
|
down(&hisi_hba->sem);
|
|
up(&hisi_hba->sem);
|
|
}
|
|
|
|
/* protect task_prep and start_delivery sequence */
|
|
rc = hisi_sas_task_prep(task, &dq, is_tmf, tmf, &pass);
|
|
if (rc)
|
|
dev_err(dev, "task exec: failed[%d]!\n", rc);
|
|
|
|
if (likely(pass)) {
|
|
spin_lock_irqsave(&dq->lock, flags);
|
|
hisi_hba->hw->start_delivery(dq);
|
|
spin_unlock_irqrestore(&dq->lock, flags);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
|
|
{
|
|
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
struct sas_ha_struct *sas_ha;
|
|
|
|
if (!phy->phy_attached)
|
|
return;
|
|
|
|
sas_ha = &hisi_hba->sha;
|
|
sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
|
|
|
|
if (sas_phy->phy) {
|
|
struct sas_phy *sphy = sas_phy->phy;
|
|
|
|
sphy->negotiated_linkrate = sas_phy->linkrate;
|
|
sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
|
|
sphy->maximum_linkrate_hw =
|
|
hisi_hba->hw->phy_get_max_linkrate();
|
|
if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN)
|
|
sphy->minimum_linkrate = phy->minimum_linkrate;
|
|
|
|
if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN)
|
|
sphy->maximum_linkrate = phy->maximum_linkrate;
|
|
}
|
|
|
|
if (phy->phy_type & PORT_TYPE_SAS) {
|
|
struct sas_identify_frame *id;
|
|
|
|
id = (struct sas_identify_frame *)phy->frame_rcvd;
|
|
id->dev_type = phy->identify.device_type;
|
|
id->initiator_bits = SAS_PROTOCOL_ALL;
|
|
id->target_bits = phy->identify.target_port_protocols;
|
|
} else if (phy->phy_type & PORT_TYPE_SATA) {
|
|
/*Nothing*/
|
|
}
|
|
|
|
sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
|
|
sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
|
|
}
|
|
|
|
static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
|
|
{
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct hisi_sas_device *sas_dev = NULL;
|
|
unsigned long flags;
|
|
int last = hisi_hba->last_dev_id;
|
|
int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) {
|
|
if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
|
|
int queue = i % hisi_hba->queue_count;
|
|
struct hisi_sas_dq *dq = &hisi_hba->dq[queue];
|
|
|
|
hisi_hba->devices[i].device_id = i;
|
|
sas_dev = &hisi_hba->devices[i];
|
|
sas_dev->dev_type = device->dev_type;
|
|
sas_dev->hisi_hba = hisi_hba;
|
|
sas_dev->sas_device = device;
|
|
sas_dev->dq = dq;
|
|
spin_lock_init(&sas_dev->lock);
|
|
INIT_LIST_HEAD(&hisi_hba->devices[i].list);
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
hisi_hba->last_dev_id = i;
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
|
|
return sas_dev;
|
|
}
|
|
|
|
#define HISI_SAS_SRST_ATA_DISK_CNT 3
|
|
static int hisi_sas_init_device(struct domain_device *device)
|
|
{
|
|
int rc = TMF_RESP_FUNC_COMPLETE;
|
|
struct scsi_lun lun;
|
|
struct hisi_sas_tmf_task tmf_task;
|
|
int retry = HISI_SAS_SRST_ATA_DISK_CNT;
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
|
|
switch (device->dev_type) {
|
|
case SAS_END_DEVICE:
|
|
int_to_scsilun(0, &lun);
|
|
|
|
tmf_task.tmf = TMF_CLEAR_TASK_SET;
|
|
rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
|
|
&tmf_task);
|
|
if (rc == TMF_RESP_FUNC_COMPLETE)
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
break;
|
|
case SAS_SATA_DEV:
|
|
case SAS_SATA_PM:
|
|
case SAS_SATA_PM_PORT:
|
|
case SAS_SATA_PENDING:
|
|
while (retry-- > 0) {
|
|
rc = hisi_sas_softreset_ata_disk(device);
|
|
if (!rc)
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_dev_found(struct domain_device *device)
|
|
{
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct domain_device *parent_dev = device->parent;
|
|
struct hisi_sas_device *sas_dev;
|
|
struct device *dev = hisi_hba->dev;
|
|
int rc;
|
|
|
|
if (hisi_hba->hw->alloc_dev)
|
|
sas_dev = hisi_hba->hw->alloc_dev(device);
|
|
else
|
|
sas_dev = hisi_sas_alloc_dev(device);
|
|
if (!sas_dev) {
|
|
dev_err(dev, "fail alloc dev: max support %d devices\n",
|
|
HISI_SAS_MAX_DEVICES);
|
|
return -EINVAL;
|
|
}
|
|
|
|
device->lldd_dev = sas_dev;
|
|
hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
|
|
|
|
if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
|
|
int phy_no;
|
|
u8 phy_num = parent_dev->ex_dev.num_phys;
|
|
struct ex_phy *phy;
|
|
|
|
for (phy_no = 0; phy_no < phy_num; phy_no++) {
|
|
phy = &parent_dev->ex_dev.ex_phy[phy_no];
|
|
if (SAS_ADDR(phy->attached_sas_addr) ==
|
|
SAS_ADDR(device->sas_addr))
|
|
break;
|
|
}
|
|
|
|
if (phy_no == phy_num) {
|
|
dev_info(dev, "dev found: no attached "
|
|
"dev:%016llx at ex:%016llx\n",
|
|
SAS_ADDR(device->sas_addr),
|
|
SAS_ADDR(parent_dev->sas_addr));
|
|
rc = -EINVAL;
|
|
goto err_out;
|
|
}
|
|
}
|
|
|
|
dev_info(dev, "dev[%d:%x] found\n",
|
|
sas_dev->device_id, sas_dev->dev_type);
|
|
|
|
rc = hisi_sas_init_device(device);
|
|
if (rc)
|
|
goto err_out;
|
|
return 0;
|
|
|
|
err_out:
|
|
hisi_sas_dev_gone(device);
|
|
return rc;
|
|
}
|
|
|
|
int hisi_sas_slave_configure(struct scsi_device *sdev)
|
|
{
|
|
struct domain_device *dev = sdev_to_domain_dev(sdev);
|
|
int ret = sas_slave_configure(sdev);
|
|
|
|
if (ret)
|
|
return ret;
|
|
if (!dev_is_sata(dev))
|
|
sas_change_queue_depth(sdev, 64);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_slave_configure);
|
|
|
|
void hisi_sas_scan_start(struct Scsi_Host *shost)
|
|
{
|
|
struct hisi_hba *hisi_hba = shost_priv(shost);
|
|
|
|
hisi_hba->hw->phys_init(hisi_hba);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_scan_start);
|
|
|
|
int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
|
|
{
|
|
struct hisi_hba *hisi_hba = shost_priv(shost);
|
|
struct sas_ha_struct *sha = &hisi_hba->sha;
|
|
|
|
/* Wait for PHY up interrupt to occur */
|
|
if (time < HZ)
|
|
return 0;
|
|
|
|
sas_drain_work(sha);
|
|
return 1;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_scan_finished);
|
|
|
|
static void hisi_sas_phyup_work(struct work_struct *work)
|
|
{
|
|
struct hisi_sas_phy *phy =
|
|
container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP]);
|
|
struct hisi_hba *hisi_hba = phy->hisi_hba;
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
int phy_no = sas_phy->id;
|
|
|
|
if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
|
|
hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
|
|
hisi_sas_bytes_dmaed(hisi_hba, phy_no);
|
|
}
|
|
|
|
static void hisi_sas_linkreset_work(struct work_struct *work)
|
|
{
|
|
struct hisi_sas_phy *phy =
|
|
container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]);
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
|
|
hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL);
|
|
}
|
|
|
|
static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = {
|
|
[HISI_PHYE_PHY_UP] = hisi_sas_phyup_work,
|
|
[HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work,
|
|
};
|
|
|
|
bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
|
|
enum hisi_sas_phy_event event)
|
|
{
|
|
struct hisi_hba *hisi_hba = phy->hisi_hba;
|
|
|
|
if (WARN_ON(event >= HISI_PHYES_NUM))
|
|
return false;
|
|
|
|
return queue_work(hisi_hba->wq, &phy->works[event]);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event);
|
|
|
|
static void hisi_sas_wait_phyup_timedout(struct timer_list *t)
|
|
{
|
|
struct hisi_sas_phy *phy = from_timer(phy, t, timer);
|
|
struct hisi_hba *hisi_hba = phy->hisi_hba;
|
|
struct device *dev = hisi_hba->dev;
|
|
int phy_no = phy->sas_phy.id;
|
|
|
|
dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no);
|
|
hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
|
|
}
|
|
|
|
void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no)
|
|
{
|
|
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
|
|
struct device *dev = hisi_hba->dev;
|
|
|
|
if (!timer_pending(&phy->timer)) {
|
|
dev_dbg(dev, "phy%d OOB ready\n", phy_no);
|
|
phy->timer.expires = jiffies + HISI_SAS_WAIT_PHYUP_TIMEOUT * HZ;
|
|
add_timer(&phy->timer);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready);
|
|
|
|
static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
|
|
{
|
|
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
int i;
|
|
|
|
phy->hisi_hba = hisi_hba;
|
|
phy->port = NULL;
|
|
phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
|
|
phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate();
|
|
sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
|
|
sas_phy->class = SAS;
|
|
sas_phy->iproto = SAS_PROTOCOL_ALL;
|
|
sas_phy->tproto = 0;
|
|
sas_phy->type = PHY_TYPE_PHYSICAL;
|
|
sas_phy->role = PHY_ROLE_INITIATOR;
|
|
sas_phy->oob_mode = OOB_NOT_CONNECTED;
|
|
sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
|
|
sas_phy->id = phy_no;
|
|
sas_phy->sas_addr = &hisi_hba->sas_addr[0];
|
|
sas_phy->frame_rcvd = &phy->frame_rcvd[0];
|
|
sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
|
|
sas_phy->lldd_phy = phy;
|
|
|
|
for (i = 0; i < HISI_PHYES_NUM; i++)
|
|
INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]);
|
|
|
|
spin_lock_init(&phy->lock);
|
|
|
|
timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0);
|
|
}
|
|
|
|
static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
|
|
{
|
|
struct sas_ha_struct *sas_ha = sas_phy->ha;
|
|
struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
|
|
struct hisi_sas_phy *phy = sas_phy->lldd_phy;
|
|
struct asd_sas_port *sas_port = sas_phy->port;
|
|
struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
|
|
unsigned long flags;
|
|
|
|
if (!sas_port)
|
|
return;
|
|
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
port->port_attached = 1;
|
|
port->id = phy->port_id;
|
|
phy->port = port;
|
|
sas_port->lldd_port = port;
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
}
|
|
|
|
static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,
|
|
struct hisi_sas_slot *slot)
|
|
{
|
|
if (task) {
|
|
unsigned long flags;
|
|
struct task_status_struct *ts;
|
|
|
|
ts = &task->task_status;
|
|
|
|
ts->resp = SAS_TASK_COMPLETE;
|
|
ts->stat = SAS_ABORTED_TASK;
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
task->task_state_flags &=
|
|
~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
|
|
task->task_state_flags |= SAS_TASK_STATE_DONE;
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
}
|
|
|
|
hisi_sas_slot_task_free(hisi_hba, task, slot);
|
|
}
|
|
|
|
static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
|
|
struct domain_device *device)
|
|
{
|
|
struct hisi_sas_slot *slot, *slot2;
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
|
|
list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
|
|
hisi_sas_do_release_task(hisi_hba, slot->task, slot);
|
|
}
|
|
|
|
void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct hisi_sas_device *sas_dev;
|
|
struct domain_device *device;
|
|
int i;
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
|
|
sas_dev = &hisi_hba->devices[i];
|
|
device = sas_dev->sas_device;
|
|
|
|
if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
|
|
!device)
|
|
continue;
|
|
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_release_tasks);
|
|
|
|
static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
|
|
struct domain_device *device)
|
|
{
|
|
if (hisi_hba->hw->dereg_device)
|
|
hisi_hba->hw->dereg_device(hisi_hba, device);
|
|
}
|
|
|
|
static void hisi_sas_dev_gone(struct domain_device *device)
|
|
{
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct device *dev = hisi_hba->dev;
|
|
|
|
dev_info(dev, "dev[%d:%x] is gone\n",
|
|
sas_dev->device_id, sas_dev->dev_type);
|
|
|
|
if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
|
|
hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
down(&hisi_hba->sem);
|
|
hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
|
|
up(&hisi_hba->sem);
|
|
device->lldd_dev = NULL;
|
|
}
|
|
|
|
if (hisi_hba->hw->free_device)
|
|
hisi_hba->hw->free_device(sas_dev);
|
|
sas_dev->dev_type = SAS_PHY_UNUSED;
|
|
}
|
|
|
|
static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
|
|
{
|
|
return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
|
|
}
|
|
|
|
static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
|
|
struct sas_phy_linkrates *r)
|
|
{
|
|
struct sas_phy_linkrates _r;
|
|
|
|
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
enum sas_linkrate min, max;
|
|
|
|
if (r->minimum_linkrate > SAS_LINK_RATE_1_5_GBPS)
|
|
return -EINVAL;
|
|
|
|
if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
|
|
max = sas_phy->phy->maximum_linkrate;
|
|
min = r->minimum_linkrate;
|
|
} else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
|
|
max = r->maximum_linkrate;
|
|
min = sas_phy->phy->minimum_linkrate;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
_r.maximum_linkrate = max;
|
|
_r.minimum_linkrate = min;
|
|
|
|
sas_phy->phy->maximum_linkrate = max;
|
|
sas_phy->phy->minimum_linkrate = min;
|
|
|
|
hisi_hba->hw->phy_disable(hisi_hba, phy_no);
|
|
msleep(100);
|
|
hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
|
|
hisi_hba->hw->phy_start(hisi_hba, phy_no);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
|
|
void *funcdata)
|
|
{
|
|
struct sas_ha_struct *sas_ha = sas_phy->ha;
|
|
struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
|
|
int phy_no = sas_phy->id;
|
|
|
|
switch (func) {
|
|
case PHY_FUNC_HARD_RESET:
|
|
hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
|
|
break;
|
|
|
|
case PHY_FUNC_LINK_RESET:
|
|
hisi_hba->hw->phy_disable(hisi_hba, phy_no);
|
|
msleep(100);
|
|
hisi_hba->hw->phy_start(hisi_hba, phy_no);
|
|
break;
|
|
|
|
case PHY_FUNC_DISABLE:
|
|
hisi_hba->hw->phy_disable(hisi_hba, phy_no);
|
|
break;
|
|
|
|
case PHY_FUNC_SET_LINK_RATE:
|
|
return hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata);
|
|
case PHY_FUNC_GET_EVENTS:
|
|
if (hisi_hba->hw->get_events) {
|
|
hisi_hba->hw->get_events(hisi_hba, phy_no);
|
|
break;
|
|
}
|
|
/* fallthru */
|
|
case PHY_FUNC_RELEASE_SPINUP_HOLD:
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void hisi_sas_task_done(struct sas_task *task)
|
|
{
|
|
del_timer(&task->slow_task->timer);
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
|
|
static void hisi_sas_tmf_timedout(struct timer_list *t)
|
|
{
|
|
struct sas_task_slow *slow = from_timer(slow, t, timer);
|
|
struct sas_task *task = slow->task;
|
|
unsigned long flags;
|
|
bool is_completed = true;
|
|
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
|
|
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
|
|
is_completed = false;
|
|
}
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
|
|
if (!is_completed)
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
|
|
#define TASK_TIMEOUT 20
|
|
#define TASK_RETRY 3
|
|
#define INTERNAL_ABORT_TIMEOUT 6
|
|
static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
|
|
void *parameter, u32 para_len,
|
|
struct hisi_sas_tmf_task *tmf)
|
|
{
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
|
|
struct device *dev = hisi_hba->dev;
|
|
struct sas_task *task;
|
|
int res, retry;
|
|
|
|
for (retry = 0; retry < TASK_RETRY; retry++) {
|
|
task = sas_alloc_slow_task(GFP_KERNEL);
|
|
if (!task)
|
|
return -ENOMEM;
|
|
|
|
task->dev = device;
|
|
task->task_proto = device->tproto;
|
|
|
|
if (dev_is_sata(device)) {
|
|
task->ata_task.device_control_reg_update = 1;
|
|
memcpy(&task->ata_task.fis, parameter, para_len);
|
|
} else {
|
|
memcpy(&task->ssp_task, parameter, para_len);
|
|
}
|
|
task->task_done = hisi_sas_task_done;
|
|
|
|
task->slow_task->timer.function = hisi_sas_tmf_timedout;
|
|
task->slow_task->timer.expires = jiffies + TASK_TIMEOUT * HZ;
|
|
add_timer(&task->slow_task->timer);
|
|
|
|
res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
|
|
|
|
if (res) {
|
|
del_timer(&task->slow_task->timer);
|
|
dev_err(dev, "abort tmf: executing internal task failed: %d\n",
|
|
res);
|
|
goto ex_err;
|
|
}
|
|
|
|
wait_for_completion(&task->slow_task->completion);
|
|
res = TMF_RESP_FUNC_FAILED;
|
|
/* Even TMF timed out, return direct. */
|
|
if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
|
|
if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
|
|
struct hisi_sas_slot *slot = task->lldd_task;
|
|
|
|
dev_err(dev, "abort tmf: TMF task timeout and not done\n");
|
|
if (slot) {
|
|
struct hisi_sas_cq *cq =
|
|
&hisi_hba->cq[slot->dlvry_queue];
|
|
/*
|
|
* flush tasklet to avoid free'ing task
|
|
* before using task in IO completion
|
|
*/
|
|
tasklet_kill(&cq->tasklet);
|
|
slot->task = NULL;
|
|
}
|
|
|
|
goto ex_err;
|
|
} else
|
|
dev_err(dev, "abort tmf: TMF task timeout\n");
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
break;
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == TMF_RESP_FUNC_SUCC) {
|
|
res = TMF_RESP_FUNC_SUCC;
|
|
break;
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == SAS_DATA_UNDERRUN) {
|
|
/* no error, but return the number of bytes of
|
|
* underrun
|
|
*/
|
|
dev_warn(dev, "abort tmf: task to dev %016llx "
|
|
"resp: 0x%x sts 0x%x underrun\n",
|
|
SAS_ADDR(device->sas_addr),
|
|
task->task_status.resp,
|
|
task->task_status.stat);
|
|
res = task->task_status.residual;
|
|
break;
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == SAS_DATA_OVERRUN) {
|
|
dev_warn(dev, "abort tmf: blocked task error\n");
|
|
res = -EMSGSIZE;
|
|
break;
|
|
}
|
|
|
|
dev_warn(dev, "abort tmf: task to dev "
|
|
"%016llx resp: 0x%x status 0x%x\n",
|
|
SAS_ADDR(device->sas_addr), task->task_status.resp,
|
|
task->task_status.stat);
|
|
sas_free_task(task);
|
|
task = NULL;
|
|
}
|
|
ex_err:
|
|
if (retry == TASK_RETRY)
|
|
dev_warn(dev, "abort tmf: executing internal task failed!\n");
|
|
sas_free_task(task);
|
|
return res;
|
|
}
|
|
|
|
static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
|
|
bool reset, int pmp, u8 *fis)
|
|
{
|
|
struct ata_taskfile tf;
|
|
|
|
ata_tf_init(dev, &tf);
|
|
if (reset)
|
|
tf.ctl |= ATA_SRST;
|
|
else
|
|
tf.ctl &= ~ATA_SRST;
|
|
tf.command = ATA_CMD_DEV_RESET;
|
|
ata_tf_to_fis(&tf, pmp, 0, fis);
|
|
}
|
|
|
|
static int hisi_sas_softreset_ata_disk(struct domain_device *device)
|
|
{
|
|
u8 fis[20] = {0};
|
|
struct ata_port *ap = device->sata_dev.ap;
|
|
struct ata_link *link;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct device *dev = hisi_hba->dev;
|
|
int s = sizeof(struct host_to_dev_fis);
|
|
|
|
ata_for_each_link(link, ap, EDGE) {
|
|
int pmp = sata_srst_pmp(link);
|
|
|
|
hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
|
|
rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
|
|
if (rc != TMF_RESP_FUNC_COMPLETE)
|
|
break;
|
|
}
|
|
|
|
if (rc == TMF_RESP_FUNC_COMPLETE) {
|
|
ata_for_each_link(link, ap, EDGE) {
|
|
int pmp = sata_srst_pmp(link);
|
|
|
|
hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
|
|
rc = hisi_sas_exec_internal_tmf_task(device, fis,
|
|
s, NULL);
|
|
if (rc != TMF_RESP_FUNC_COMPLETE)
|
|
dev_err(dev, "ata disk de-reset failed\n");
|
|
}
|
|
} else {
|
|
dev_err(dev, "ata disk reset failed\n");
|
|
}
|
|
|
|
if (rc == TMF_RESP_FUNC_COMPLETE)
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
|
|
u8 *lun, struct hisi_sas_tmf_task *tmf)
|
|
{
|
|
struct sas_ssp_task ssp_task;
|
|
|
|
if (!(device->tproto & SAS_PROTOCOL_SSP))
|
|
return TMF_RESP_FUNC_ESUPP;
|
|
|
|
memcpy(ssp_task.LUN, lun, 8);
|
|
|
|
return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
|
|
sizeof(ssp_task), tmf);
|
|
}
|
|
|
|
static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba)
|
|
{
|
|
u32 state = hisi_hba->hw->get_phys_state(hisi_hba);
|
|
int i;
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
|
|
struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
|
|
struct domain_device *device = sas_dev->sas_device;
|
|
struct asd_sas_port *sas_port;
|
|
struct hisi_sas_port *port;
|
|
struct hisi_sas_phy *phy = NULL;
|
|
struct asd_sas_phy *sas_phy;
|
|
|
|
if ((sas_dev->dev_type == SAS_PHY_UNUSED)
|
|
|| !device || !device->port)
|
|
continue;
|
|
|
|
sas_port = device->port;
|
|
port = to_hisi_sas_port(sas_port);
|
|
|
|
list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el)
|
|
if (state & BIT(sas_phy->id)) {
|
|
phy = sas_phy->lldd_phy;
|
|
break;
|
|
}
|
|
|
|
if (phy) {
|
|
port->id = phy->port_id;
|
|
|
|
/* Update linkrate of directly attached device. */
|
|
if (!device->parent)
|
|
device->linkrate = phy->sas_phy.linkrate;
|
|
|
|
hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
|
|
} else
|
|
port->id = 0xff;
|
|
}
|
|
}
|
|
|
|
static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state,
|
|
u32 state)
|
|
{
|
|
struct sas_ha_struct *sas_ha = &hisi_hba->sha;
|
|
struct asd_sas_port *_sas_port = NULL;
|
|
int phy_no;
|
|
|
|
for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
|
|
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
struct asd_sas_port *sas_port = sas_phy->port;
|
|
bool do_port_check = !!(_sas_port != sas_port);
|
|
|
|
if (!sas_phy->phy->enabled)
|
|
continue;
|
|
|
|
/* Report PHY state change to libsas */
|
|
if (state & BIT(phy_no)) {
|
|
if (do_port_check && sas_port && sas_port->port_dev) {
|
|
struct domain_device *dev = sas_port->port_dev;
|
|
|
|
_sas_port = sas_port;
|
|
|
|
if (DEV_IS_EXPANDER(dev->dev_type))
|
|
sas_ha->notify_port_event(sas_phy,
|
|
PORTE_BROADCAST_RCVD);
|
|
}
|
|
} else if (old_state & (1 << phy_no))
|
|
/* PHY down but was up before */
|
|
hisi_sas_phy_down(hisi_hba, phy_no, 0);
|
|
|
|
}
|
|
}
|
|
|
|
static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct hisi_sas_device *sas_dev;
|
|
struct domain_device *device;
|
|
int i;
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
|
|
sas_dev = &hisi_hba->devices[i];
|
|
device = sas_dev->sas_device;
|
|
|
|
if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
|
|
continue;
|
|
|
|
hisi_sas_init_device(device);
|
|
}
|
|
}
|
|
|
|
static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba,
|
|
struct asd_sas_port *sas_port,
|
|
struct domain_device *device)
|
|
{
|
|
struct hisi_sas_tmf_task tmf_task = { .force_phy = 1 };
|
|
struct ata_port *ap = device->sata_dev.ap;
|
|
struct device *dev = hisi_hba->dev;
|
|
int s = sizeof(struct host_to_dev_fis);
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct asd_sas_phy *sas_phy;
|
|
struct ata_link *link;
|
|
u8 fis[20] = {0};
|
|
u32 state;
|
|
|
|
state = hisi_hba->hw->get_phys_state(hisi_hba);
|
|
list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) {
|
|
if (!(state & BIT(sas_phy->id)))
|
|
continue;
|
|
|
|
ata_for_each_link(link, ap, EDGE) {
|
|
int pmp = sata_srst_pmp(link);
|
|
|
|
tmf_task.phy_id = sas_phy->id;
|
|
hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
|
|
rc = hisi_sas_exec_internal_tmf_task(device, fis, s,
|
|
&tmf_task);
|
|
if (rc != TMF_RESP_FUNC_COMPLETE) {
|
|
dev_err(dev, "phy%d ata reset failed rc=%d\n",
|
|
sas_phy->id, rc);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct device *dev = hisi_hba->dev;
|
|
int port_no, rc, i;
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
|
|
struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
|
|
struct domain_device *device = sas_dev->sas_device;
|
|
|
|
if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
|
|
continue;
|
|
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
if (rc < 0)
|
|
dev_err(dev, "STP reject: abort dev failed %d\n", rc);
|
|
}
|
|
|
|
for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) {
|
|
struct hisi_sas_port *port = &hisi_hba->port[port_no];
|
|
struct asd_sas_port *sas_port = &port->sas_port;
|
|
struct domain_device *port_dev = sas_port->port_dev;
|
|
struct domain_device *device;
|
|
|
|
if (!port_dev || !DEV_IS_EXPANDER(port_dev->dev_type))
|
|
continue;
|
|
|
|
/* Try to find a SATA device */
|
|
list_for_each_entry(device, &sas_port->dev_list,
|
|
dev_list_node) {
|
|
if (dev_is_sata(device)) {
|
|
hisi_sas_send_ata_reset_each_phy(hisi_hba,
|
|
sas_port,
|
|
device);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct Scsi_Host *shost = hisi_hba->shost;
|
|
|
|
down(&hisi_hba->sem);
|
|
hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba);
|
|
|
|
scsi_block_requests(shost);
|
|
hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000);
|
|
|
|
if (timer_pending(&hisi_hba->timer))
|
|
del_timer_sync(&hisi_hba->timer);
|
|
|
|
set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare);
|
|
|
|
void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct Scsi_Host *shost = hisi_hba->shost;
|
|
u32 state;
|
|
|
|
/* Init and wait for PHYs to come up and all libsas event finished. */
|
|
hisi_hba->hw->phys_init(hisi_hba);
|
|
msleep(1000);
|
|
hisi_sas_refresh_port_id(hisi_hba);
|
|
clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
|
|
up(&hisi_hba->sem);
|
|
|
|
if (hisi_hba->reject_stp_links_msk)
|
|
hisi_sas_terminate_stp_reject(hisi_hba);
|
|
hisi_sas_reset_init_all_devices(hisi_hba);
|
|
scsi_unblock_requests(shost);
|
|
clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
|
|
|
|
state = hisi_hba->hw->get_phys_state(hisi_hba);
|
|
hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state, state);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
|
|
|
|
static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct device *dev = hisi_hba->dev;
|
|
struct Scsi_Host *shost = hisi_hba->shost;
|
|
int rc;
|
|
|
|
if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct)
|
|
queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
|
|
|
|
if (!hisi_hba->hw->soft_reset)
|
|
return -1;
|
|
|
|
if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
|
|
return -1;
|
|
|
|
dev_info(dev, "controller resetting...\n");
|
|
hisi_sas_controller_reset_prepare(hisi_hba);
|
|
|
|
rc = hisi_hba->hw->soft_reset(hisi_hba);
|
|
if (rc) {
|
|
dev_warn(dev, "controller reset failed (%d)\n", rc);
|
|
clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
|
|
up(&hisi_hba->sem);
|
|
scsi_unblock_requests(shost);
|
|
clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
|
|
return rc;
|
|
}
|
|
|
|
hisi_sas_controller_reset_done(hisi_hba);
|
|
dev_info(dev, "controller reset complete\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_abort_task(struct sas_task *task)
|
|
{
|
|
struct scsi_lun lun;
|
|
struct hisi_sas_tmf_task tmf_task;
|
|
struct domain_device *device = task->dev;
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct hisi_hba *hisi_hba;
|
|
struct device *dev;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
unsigned long flags;
|
|
|
|
if (!sas_dev)
|
|
return TMF_RESP_FUNC_FAILED;
|
|
|
|
hisi_hba = dev_to_hisi_hba(task->dev);
|
|
dev = hisi_hba->dev;
|
|
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
if (task->task_state_flags & SAS_TASK_STATE_DONE) {
|
|
struct hisi_sas_slot *slot = task->lldd_task;
|
|
struct hisi_sas_cq *cq;
|
|
|
|
if (slot) {
|
|
/*
|
|
* flush tasklet to avoid free'ing task
|
|
* before using task in IO completion
|
|
*/
|
|
cq = &hisi_hba->cq[slot->dlvry_queue];
|
|
tasklet_kill(&cq->tasklet);
|
|
}
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
rc = TMF_RESP_FUNC_COMPLETE;
|
|
goto out;
|
|
}
|
|
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
|
|
if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
|
|
struct scsi_cmnd *cmnd = task->uldd_task;
|
|
struct hisi_sas_slot *slot = task->lldd_task;
|
|
u16 tag = slot->idx;
|
|
int rc2;
|
|
|
|
int_to_scsilun(cmnd->device->lun, &lun);
|
|
tmf_task.tmf = TMF_ABORT_TASK;
|
|
tmf_task.tag_of_task_to_be_managed = tag;
|
|
|
|
rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
|
|
&tmf_task);
|
|
|
|
rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_CMD, tag);
|
|
if (rc2 < 0) {
|
|
dev_err(dev, "abort task: internal abort (%d)\n", rc2);
|
|
return TMF_RESP_FUNC_FAILED;
|
|
}
|
|
|
|
/*
|
|
* If the TMF finds that the IO is not in the device and also
|
|
* the internal abort does not succeed, then it is safe to
|
|
* free the slot.
|
|
* Note: if the internal abort succeeds then the slot
|
|
* will have already been completed
|
|
*/
|
|
if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
|
|
if (task->lldd_task)
|
|
hisi_sas_do_release_task(hisi_hba, task, slot);
|
|
}
|
|
} else if (task->task_proto & SAS_PROTOCOL_SATA ||
|
|
task->task_proto & SAS_PROTOCOL_STP) {
|
|
if (task->dev->dev_type == SAS_SATA_DEV) {
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV,
|
|
0);
|
|
if (rc < 0) {
|
|
dev_err(dev, "abort task: internal abort failed\n");
|
|
goto out;
|
|
}
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
rc = hisi_sas_softreset_ata_disk(device);
|
|
}
|
|
} else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
|
|
/* SMP */
|
|
struct hisi_sas_slot *slot = task->lldd_task;
|
|
u32 tag = slot->idx;
|
|
struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
|
|
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_CMD, tag);
|
|
if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) &&
|
|
task->lldd_task) {
|
|
/*
|
|
* flush tasklet to avoid free'ing task
|
|
* before using task in IO completion
|
|
*/
|
|
tasklet_kill(&cq->tasklet);
|
|
slot->task = NULL;
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (rc != TMF_RESP_FUNC_COMPLETE)
|
|
dev_notice(dev, "abort task: rc=%d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
|
|
{
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct device *dev = hisi_hba->dev;
|
|
struct hisi_sas_tmf_task tmf_task;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
if (rc < 0) {
|
|
dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
|
|
return TMF_RESP_FUNC_FAILED;
|
|
}
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
tmf_task.tmf = TMF_ABORT_TASK_SET;
|
|
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
|
|
|
|
if (rc == TMF_RESP_FUNC_COMPLETE)
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
|
|
{
|
|
struct hisi_sas_tmf_task tmf_task;
|
|
int rc;
|
|
|
|
tmf_task.tmf = TMF_CLEAR_ACA;
|
|
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
|
|
{
|
|
struct sas_phy *local_phy = sas_get_local_phy(device);
|
|
int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
|
|
(device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct sas_ha_struct *sas_ha = &hisi_hba->sha;
|
|
struct asd_sas_phy *sas_phy = sas_ha->sas_phy[local_phy->number];
|
|
struct hisi_sas_phy *phy = container_of(sas_phy,
|
|
struct hisi_sas_phy, sas_phy);
|
|
DECLARE_COMPLETION_ONSTACK(phyreset);
|
|
|
|
if (scsi_is_sas_phy_local(local_phy)) {
|
|
phy->in_reset = 1;
|
|
phy->reset_completion = &phyreset;
|
|
}
|
|
|
|
rc = sas_phy_reset(local_phy, reset_type);
|
|
sas_put_local_phy(local_phy);
|
|
|
|
if (scsi_is_sas_phy_local(local_phy)) {
|
|
int ret = wait_for_completion_timeout(&phyreset, 2 * HZ);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&phy->lock, flags);
|
|
phy->reset_completion = NULL;
|
|
phy->in_reset = 0;
|
|
spin_unlock_irqrestore(&phy->lock, flags);
|
|
|
|
/* report PHY down if timed out */
|
|
if (!ret)
|
|
hisi_sas_phy_down(hisi_hba, sas_phy->id, 0);
|
|
} else
|
|
msleep(2000);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
|
|
{
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct device *dev = hisi_hba->dev;
|
|
int rc;
|
|
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
if (rc < 0) {
|
|
dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
|
|
return TMF_RESP_FUNC_FAILED;
|
|
}
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
rc = hisi_sas_debug_I_T_nexus_reset(device);
|
|
|
|
if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV))
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
|
|
{
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
struct device *dev = hisi_hba->dev;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
|
|
if (dev_is_sata(device)) {
|
|
struct sas_phy *phy;
|
|
|
|
/* Clear internal IO and then hardreset */
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
if (rc < 0) {
|
|
dev_err(dev, "lu_reset: internal abort failed\n");
|
|
goto out;
|
|
}
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
phy = sas_get_local_phy(device);
|
|
|
|
rc = sas_phy_reset(phy, 1);
|
|
|
|
if (rc == 0)
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
sas_put_local_phy(phy);
|
|
} else {
|
|
struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
|
|
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
if (rc < 0) {
|
|
dev_err(dev, "lu_reset: internal abort failed\n");
|
|
goto out;
|
|
}
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
|
|
if (rc == TMF_RESP_FUNC_COMPLETE)
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
}
|
|
out:
|
|
if (rc != TMF_RESP_FUNC_COMPLETE)
|
|
dev_err(dev, "lu_reset: for device[%d]:rc= %d\n",
|
|
sas_dev->device_id, rc);
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
|
|
{
|
|
struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
|
|
struct device *dev = hisi_hba->dev;
|
|
HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
|
|
int rc, i;
|
|
|
|
queue_work(hisi_hba->wq, &r.work);
|
|
wait_for_completion(r.completion);
|
|
if (!r.done)
|
|
return TMF_RESP_FUNC_FAILED;
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
|
|
struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
|
|
struct domain_device *device = sas_dev->sas_device;
|
|
|
|
if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device ||
|
|
DEV_IS_EXPANDER(device->dev_type))
|
|
continue;
|
|
|
|
rc = hisi_sas_debug_I_T_nexus_reset(device);
|
|
if (rc != TMF_RESP_FUNC_COMPLETE)
|
|
dev_info(dev, "clear nexus ha: for device[%d] rc=%d\n",
|
|
sas_dev->device_id, rc);
|
|
}
|
|
|
|
hisi_sas_release_tasks(hisi_hba);
|
|
|
|
return TMF_RESP_FUNC_COMPLETE;
|
|
}
|
|
|
|
static int hisi_sas_query_task(struct sas_task *task)
|
|
{
|
|
struct scsi_lun lun;
|
|
struct hisi_sas_tmf_task tmf_task;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
|
|
if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
|
|
struct scsi_cmnd *cmnd = task->uldd_task;
|
|
struct domain_device *device = task->dev;
|
|
struct hisi_sas_slot *slot = task->lldd_task;
|
|
u32 tag = slot->idx;
|
|
|
|
int_to_scsilun(cmnd->device->lun, &lun);
|
|
tmf_task.tmf = TMF_QUERY_TASK;
|
|
tmf_task.tag_of_task_to_be_managed = tag;
|
|
|
|
rc = hisi_sas_debug_issue_ssp_tmf(device,
|
|
lun.scsi_lun,
|
|
&tmf_task);
|
|
switch (rc) {
|
|
/* The task is still in Lun, release it then */
|
|
case TMF_RESP_FUNC_SUCC:
|
|
/* The task is not in Lun or failed, reset the phy */
|
|
case TMF_RESP_FUNC_FAILED:
|
|
case TMF_RESP_FUNC_COMPLETE:
|
|
break;
|
|
default:
|
|
rc = TMF_RESP_FUNC_FAILED;
|
|
break;
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
|
|
struct sas_task *task, int abort_flag,
|
|
int task_tag, struct hisi_sas_dq *dq)
|
|
{
|
|
struct domain_device *device = task->dev;
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct device *dev = hisi_hba->dev;
|
|
struct hisi_sas_port *port;
|
|
struct hisi_sas_slot *slot;
|
|
struct asd_sas_port *sas_port = device->port;
|
|
struct hisi_sas_cmd_hdr *cmd_hdr_base;
|
|
int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
|
|
unsigned long flags, flags_dq = 0;
|
|
int wr_q_index;
|
|
|
|
if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
|
|
return -EINVAL;
|
|
|
|
if (!device->port)
|
|
return -1;
|
|
|
|
port = to_hisi_sas_port(sas_port);
|
|
|
|
/* simply get a slot and send abort command */
|
|
rc = hisi_sas_slot_index_alloc(hisi_hba, NULL);
|
|
if (rc < 0)
|
|
goto err_out;
|
|
|
|
slot_idx = rc;
|
|
slot = &hisi_hba->slot_info[slot_idx];
|
|
|
|
spin_lock_irqsave(&dq->lock, flags_dq);
|
|
wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
|
|
if (wr_q_index < 0) {
|
|
spin_unlock_irqrestore(&dq->lock, flags_dq);
|
|
rc = -EAGAIN;
|
|
goto err_out_tag;
|
|
}
|
|
list_add_tail(&slot->delivery, &dq->list);
|
|
spin_unlock_irqrestore(&dq->lock, flags_dq);
|
|
spin_lock_irqsave(&sas_dev->lock, flags);
|
|
list_add_tail(&slot->entry, &sas_dev->list);
|
|
spin_unlock_irqrestore(&sas_dev->lock, flags);
|
|
|
|
dlvry_queue = dq->id;
|
|
dlvry_queue_slot = wr_q_index;
|
|
|
|
slot->device_id = sas_dev->device_id;
|
|
slot->n_elem = n_elem;
|
|
slot->dlvry_queue = dlvry_queue;
|
|
slot->dlvry_queue_slot = dlvry_queue_slot;
|
|
cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
|
|
slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
|
|
slot->task = task;
|
|
slot->port = port;
|
|
slot->is_internal = true;
|
|
task->lldd_task = slot;
|
|
|
|
memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
|
|
memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
|
|
memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
|
|
|
|
hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
|
|
abort_flag, task_tag);
|
|
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
task->task_state_flags |= SAS_TASK_AT_INITIATOR;
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
WRITE_ONCE(slot->ready, 1);
|
|
/* send abort command to the chip */
|
|
spin_lock_irqsave(&dq->lock, flags);
|
|
hisi_hba->hw->start_delivery(dq);
|
|
spin_unlock_irqrestore(&dq->lock, flags);
|
|
|
|
return 0;
|
|
|
|
err_out_tag:
|
|
hisi_sas_slot_index_free(hisi_hba, slot_idx);
|
|
err_out:
|
|
dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* _hisi_sas_internal_task_abort -- execute an internal
|
|
* abort command for single IO command or a device
|
|
* @hisi_hba: host controller struct
|
|
* @device: domain device
|
|
* @abort_flag: mode of operation, device or single IO
|
|
* @tag: tag of IO to be aborted (only relevant to single
|
|
* IO mode)
|
|
* @dq: delivery queue for this internal abort command
|
|
*/
|
|
static int
|
|
_hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
|
|
struct domain_device *device, int abort_flag,
|
|
int tag, struct hisi_sas_dq *dq)
|
|
{
|
|
struct sas_task *task;
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct device *dev = hisi_hba->dev;
|
|
int res;
|
|
|
|
/*
|
|
* The interface is not realized means this HW don't support internal
|
|
* abort, or don't need to do internal abort. Then here, we return
|
|
* TMF_RESP_FUNC_FAILED and let other steps go on, which depends that
|
|
* the internal abort has been executed and returned CQ.
|
|
*/
|
|
if (!hisi_hba->hw->prep_abort)
|
|
return TMF_RESP_FUNC_FAILED;
|
|
|
|
task = sas_alloc_slow_task(GFP_KERNEL);
|
|
if (!task)
|
|
return -ENOMEM;
|
|
|
|
task->dev = device;
|
|
task->task_proto = device->tproto;
|
|
task->task_done = hisi_sas_task_done;
|
|
task->slow_task->timer.function = hisi_sas_tmf_timedout;
|
|
task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT * HZ;
|
|
add_timer(&task->slow_task->timer);
|
|
|
|
res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
|
|
task, abort_flag, tag, dq);
|
|
if (res) {
|
|
del_timer(&task->slow_task->timer);
|
|
dev_err(dev, "internal task abort: executing internal task failed: %d\n",
|
|
res);
|
|
goto exit;
|
|
}
|
|
wait_for_completion(&task->slow_task->completion);
|
|
res = TMF_RESP_FUNC_FAILED;
|
|
|
|
/* Internal abort timed out */
|
|
if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
|
|
if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
|
|
struct hisi_sas_slot *slot = task->lldd_task;
|
|
|
|
if (slot) {
|
|
struct hisi_sas_cq *cq =
|
|
&hisi_hba->cq[slot->dlvry_queue];
|
|
/*
|
|
* flush tasklet to avoid free'ing task
|
|
* before using task in IO completion
|
|
*/
|
|
tasklet_kill(&cq->tasklet);
|
|
slot->task = NULL;
|
|
}
|
|
dev_err(dev, "internal task abort: timeout and not done.\n");
|
|
|
|
res = -EIO;
|
|
goto exit;
|
|
} else
|
|
dev_err(dev, "internal task abort: timeout.\n");
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
goto exit;
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == TMF_RESP_FUNC_SUCC) {
|
|
res = TMF_RESP_FUNC_SUCC;
|
|
goto exit;
|
|
}
|
|
|
|
exit:
|
|
dev_dbg(dev, "internal task abort: task to dev %016llx task=%p "
|
|
"resp: 0x%x sts 0x%x\n",
|
|
SAS_ADDR(device->sas_addr),
|
|
task,
|
|
task->task_status.resp, /* 0 is complete, -1 is undelivered */
|
|
task->task_status.stat);
|
|
sas_free_task(task);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
|
|
struct domain_device *device,
|
|
int abort_flag, int tag)
|
|
{
|
|
struct hisi_sas_slot *slot;
|
|
struct device *dev = hisi_hba->dev;
|
|
struct hisi_sas_dq *dq;
|
|
int i, rc;
|
|
|
|
switch (abort_flag) {
|
|
case HISI_SAS_INT_ABT_CMD:
|
|
slot = &hisi_hba->slot_info[tag];
|
|
dq = &hisi_hba->dq[slot->dlvry_queue];
|
|
return _hisi_sas_internal_task_abort(hisi_hba, device,
|
|
abort_flag, tag, dq);
|
|
case HISI_SAS_INT_ABT_DEV:
|
|
for (i = 0; i < hisi_hba->cq_nvecs; i++) {
|
|
struct hisi_sas_cq *cq = &hisi_hba->cq[i];
|
|
const struct cpumask *mask = cq->pci_irq_mask;
|
|
|
|
if (mask && !cpumask_intersects(cpu_online_mask, mask))
|
|
continue;
|
|
dq = &hisi_hba->dq[i];
|
|
rc = _hisi_sas_internal_task_abort(hisi_hba, device,
|
|
abort_flag, tag,
|
|
dq);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
break;
|
|
default:
|
|
dev_err(dev, "Unrecognised internal abort flag (%d)\n",
|
|
abort_flag);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
|
|
{
|
|
hisi_sas_port_notify_formed(sas_phy);
|
|
}
|
|
|
|
static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
|
|
u8 reg_index, u8 reg_count, u8 *write_data)
|
|
{
|
|
struct hisi_hba *hisi_hba = sha->lldd_ha;
|
|
|
|
if (!hisi_hba->hw->write_gpio)
|
|
return -EOPNOTSUPP;
|
|
|
|
return hisi_hba->hw->write_gpio(hisi_hba, reg_type,
|
|
reg_index, reg_count, write_data);
|
|
}
|
|
|
|
static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
|
|
{
|
|
phy->phy_attached = 0;
|
|
phy->phy_type = 0;
|
|
phy->port = NULL;
|
|
}
|
|
|
|
void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
|
|
{
|
|
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
struct sas_ha_struct *sas_ha = &hisi_hba->sha;
|
|
struct device *dev = hisi_hba->dev;
|
|
|
|
if (rdy) {
|
|
/* Phy down but ready */
|
|
hisi_sas_bytes_dmaed(hisi_hba, phy_no);
|
|
hisi_sas_port_notify_formed(sas_phy);
|
|
} else {
|
|
struct hisi_sas_port *port = phy->port;
|
|
|
|
if (test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags) ||
|
|
phy->in_reset) {
|
|
dev_info(dev, "ignore flutter phy%d down\n", phy_no);
|
|
return;
|
|
}
|
|
/* Phy down and not ready */
|
|
sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
|
|
sas_phy_disconnected(sas_phy);
|
|
|
|
if (port) {
|
|
if (phy->phy_type & PORT_TYPE_SAS) {
|
|
int port_id = port->id;
|
|
|
|
if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
|
|
port_id))
|
|
port->port_attached = 0;
|
|
} else if (phy->phy_type & PORT_TYPE_SATA)
|
|
port->port_attached = 0;
|
|
}
|
|
hisi_sas_phy_disconnected(phy);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
|
|
|
|
void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < hisi_hba->cq_nvecs; i++) {
|
|
struct hisi_sas_cq *cq = &hisi_hba->cq[i];
|
|
|
|
tasklet_kill(&cq->tasklet);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets);
|
|
|
|
struct scsi_transport_template *hisi_sas_stt;
|
|
EXPORT_SYMBOL_GPL(hisi_sas_stt);
|
|
|
|
static struct sas_domain_function_template hisi_sas_transport_ops = {
|
|
.lldd_dev_found = hisi_sas_dev_found,
|
|
.lldd_dev_gone = hisi_sas_dev_gone,
|
|
.lldd_execute_task = hisi_sas_queue_command,
|
|
.lldd_control_phy = hisi_sas_control_phy,
|
|
.lldd_abort_task = hisi_sas_abort_task,
|
|
.lldd_abort_task_set = hisi_sas_abort_task_set,
|
|
.lldd_clear_aca = hisi_sas_clear_aca,
|
|
.lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
|
|
.lldd_lu_reset = hisi_sas_lu_reset,
|
|
.lldd_query_task = hisi_sas_query_task,
|
|
.lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
|
|
.lldd_port_formed = hisi_sas_port_formed,
|
|
.lldd_write_gpio = hisi_sas_write_gpio,
|
|
};
|
|
|
|
void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
|
|
{
|
|
int i, s, j, max_command_entries = hisi_hba->hw->max_command_entries;
|
|
struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint;
|
|
|
|
for (i = 0; i < hisi_hba->queue_count; i++) {
|
|
struct hisi_sas_cq *cq = &hisi_hba->cq[i];
|
|
struct hisi_sas_dq *dq = &hisi_hba->dq[i];
|
|
struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i];
|
|
|
|
s = sizeof(struct hisi_sas_cmd_hdr);
|
|
for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
|
|
memset(&cmd_hdr[j], 0, s);
|
|
|
|
dq->wr_point = 0;
|
|
|
|
s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
|
|
memset(hisi_hba->complete_hdr[i], 0, s);
|
|
cq->rd_point = 0;
|
|
}
|
|
|
|
s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
|
|
memset(hisi_hba->initial_fis, 0, s);
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_iost);
|
|
memset(hisi_hba->iost, 0, s);
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
|
|
memset(hisi_hba->breakpoint, 0, s);
|
|
|
|
s = sizeof(struct hisi_sas_sata_breakpoint);
|
|
for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++)
|
|
memset(&sata_breakpoint[j], 0, s);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
|
|
|
|
int hisi_sas_alloc(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct device *dev = hisi_hba->dev;
|
|
int i, j, s, max_command_entries = hisi_hba->hw->max_command_entries;
|
|
int max_command_entries_ru, sz_slot_buf_ru;
|
|
int blk_cnt, slots_per_blk;
|
|
|
|
sema_init(&hisi_hba->sem, 1);
|
|
spin_lock_init(&hisi_hba->lock);
|
|
for (i = 0; i < hisi_hba->n_phy; i++) {
|
|
hisi_sas_phy_init(hisi_hba, i);
|
|
hisi_hba->port[i].port_attached = 0;
|
|
hisi_hba->port[i].id = -1;
|
|
}
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
|
|
hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
|
|
hisi_hba->devices[i].device_id = i;
|
|
}
|
|
|
|
for (i = 0; i < hisi_hba->queue_count; i++) {
|
|
struct hisi_sas_cq *cq = &hisi_hba->cq[i];
|
|
struct hisi_sas_dq *dq = &hisi_hba->dq[i];
|
|
|
|
/* Completion queue structure */
|
|
cq->id = i;
|
|
cq->hisi_hba = hisi_hba;
|
|
|
|
/* Delivery queue structure */
|
|
spin_lock_init(&dq->lock);
|
|
INIT_LIST_HEAD(&dq->list);
|
|
dq->id = i;
|
|
dq->hisi_hba = hisi_hba;
|
|
|
|
/* Delivery queue */
|
|
s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
|
|
hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s,
|
|
&hisi_hba->cmd_hdr_dma[i],
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->cmd_hdr[i])
|
|
goto err_out;
|
|
|
|
/* Completion queue */
|
|
s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
|
|
hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s,
|
|
&hisi_hba->complete_hdr_dma[i],
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->complete_hdr[i])
|
|
goto err_out;
|
|
}
|
|
|
|
s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
|
|
hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma,
|
|
GFP_KERNEL | __GFP_ZERO);
|
|
if (!hisi_hba->itct)
|
|
goto err_out;
|
|
|
|
hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
|
|
sizeof(struct hisi_sas_slot),
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->slot_info)
|
|
goto err_out;
|
|
|
|
/* roundup to avoid overly large block size */
|
|
max_command_entries_ru = roundup(max_command_entries, 64);
|
|
if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
|
|
sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table);
|
|
else
|
|
sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table);
|
|
sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64);
|
|
s = lcm(max_command_entries_ru, sz_slot_buf_ru);
|
|
blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
|
|
slots_per_blk = s / sz_slot_buf_ru;
|
|
|
|
for (i = 0; i < blk_cnt; i++) {
|
|
int slot_index = i * slots_per_blk;
|
|
dma_addr_t buf_dma;
|
|
void *buf;
|
|
|
|
buf = dmam_alloc_coherent(dev, s, &buf_dma,
|
|
GFP_KERNEL | __GFP_ZERO);
|
|
if (!buf)
|
|
goto err_out;
|
|
|
|
for (j = 0; j < slots_per_blk; j++, slot_index++) {
|
|
struct hisi_sas_slot *slot;
|
|
|
|
slot = &hisi_hba->slot_info[slot_index];
|
|
slot->buf = buf;
|
|
slot->buf_dma = buf_dma;
|
|
slot->idx = slot_index;
|
|
|
|
buf += sz_slot_buf_ru;
|
|
buf_dma += sz_slot_buf_ru;
|
|
}
|
|
}
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_iost);
|
|
hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma,
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->iost)
|
|
goto err_out;
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
|
|
hisi_hba->breakpoint = dmam_alloc_coherent(dev, s,
|
|
&hisi_hba->breakpoint_dma,
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->breakpoint)
|
|
goto err_out;
|
|
|
|
hisi_hba->slot_index_count = max_command_entries;
|
|
s = hisi_hba->slot_index_count / BITS_PER_BYTE;
|
|
hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
|
|
if (!hisi_hba->slot_index_tags)
|
|
goto err_out;
|
|
|
|
s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
|
|
hisi_hba->initial_fis = dmam_alloc_coherent(dev, s,
|
|
&hisi_hba->initial_fis_dma,
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->initial_fis)
|
|
goto err_out;
|
|
|
|
s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
|
|
hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s,
|
|
&hisi_hba->sata_breakpoint_dma,
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->sata_breakpoint)
|
|
goto err_out;
|
|
hisi_sas_init_mem(hisi_hba);
|
|
|
|
hisi_sas_slot_index_init(hisi_hba);
|
|
hisi_hba->last_slot_index = hisi_hba->hw->max_command_entries -
|
|
HISI_SAS_RESERVED_IPTT_CNT;
|
|
|
|
hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
|
|
if (!hisi_hba->wq) {
|
|
dev_err(dev, "sas_alloc: failed to create workqueue\n");
|
|
goto err_out;
|
|
}
|
|
|
|
return 0;
|
|
err_out:
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_alloc);
|
|
|
|
void hisi_sas_free(struct hisi_hba *hisi_hba)
|
|
{
|
|
if (hisi_hba->wq)
|
|
destroy_workqueue(hisi_hba->wq);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_free);
|
|
|
|
void hisi_sas_rst_work_handler(struct work_struct *work)
|
|
{
|
|
struct hisi_hba *hisi_hba =
|
|
container_of(work, struct hisi_hba, rst_work);
|
|
|
|
hisi_sas_controller_reset(hisi_hba);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler);
|
|
|
|
void hisi_sas_sync_rst_work_handler(struct work_struct *work)
|
|
{
|
|
struct hisi_sas_rst *rst =
|
|
container_of(work, struct hisi_sas_rst, work);
|
|
|
|
if (!hisi_sas_controller_reset(rst->hisi_hba))
|
|
rst->done = true;
|
|
complete(rst->completion);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler);
|
|
|
|
int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct device *dev = hisi_hba->dev;
|
|
struct platform_device *pdev = hisi_hba->platform_dev;
|
|
struct device_node *np = pdev ? pdev->dev.of_node : NULL;
|
|
struct clk *refclk;
|
|
|
|
if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
|
|
SAS_ADDR_SIZE)) {
|
|
dev_err(dev, "could not get property sas-addr\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (np) {
|
|
/*
|
|
* These properties are only required for platform device-based
|
|
* controller with DT firmware.
|
|
*/
|
|
hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
|
|
"hisilicon,sas-syscon");
|
|
if (IS_ERR(hisi_hba->ctrl)) {
|
|
dev_err(dev, "could not get syscon\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (device_property_read_u32(dev, "ctrl-reset-reg",
|
|
&hisi_hba->ctrl_reset_reg)) {
|
|
dev_err(dev,
|
|
"could not get property ctrl-reset-reg\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
|
|
&hisi_hba->ctrl_reset_sts_reg)) {
|
|
dev_err(dev,
|
|
"could not get property ctrl-reset-sts-reg\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
|
|
&hisi_hba->ctrl_clock_ena_reg)) {
|
|
dev_err(dev,
|
|
"could not get property ctrl-clock-ena-reg\n");
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
|
|
refclk = devm_clk_get(dev, NULL);
|
|
if (IS_ERR(refclk))
|
|
dev_dbg(dev, "no ref clk property\n");
|
|
else
|
|
hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
|
|
|
|
if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) {
|
|
dev_err(dev, "could not get property phy-count\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (device_property_read_u32(dev, "queue-count",
|
|
&hisi_hba->queue_count)) {
|
|
dev_err(dev, "could not get property queue-count\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info);
|
|
|
|
static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
|
|
const struct hisi_sas_hw *hw)
|
|
{
|
|
struct resource *res;
|
|
struct Scsi_Host *shost;
|
|
struct hisi_hba *hisi_hba;
|
|
struct device *dev = &pdev->dev;
|
|
int error;
|
|
|
|
shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
|
|
if (!shost) {
|
|
dev_err(dev, "scsi host alloc failed\n");
|
|
return NULL;
|
|
}
|
|
hisi_hba = shost_priv(shost);
|
|
|
|
INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
|
|
hisi_hba->hw = hw;
|
|
hisi_hba->dev = dev;
|
|
hisi_hba->platform_dev = pdev;
|
|
hisi_hba->shost = shost;
|
|
SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
|
|
|
|
timer_setup(&hisi_hba->timer, NULL, 0);
|
|
|
|
if (hisi_sas_get_fw_info(hisi_hba) < 0)
|
|
goto err_out;
|
|
|
|
error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
|
|
if (error)
|
|
error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
|
|
|
|
if (error) {
|
|
dev_err(dev, "No usable DMA addressing method\n");
|
|
goto err_out;
|
|
}
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
hisi_hba->regs = devm_ioremap_resource(dev, res);
|
|
if (IS_ERR(hisi_hba->regs))
|
|
goto err_out;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
if (res) {
|
|
hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res);
|
|
if (IS_ERR(hisi_hba->sgpio_regs))
|
|
goto err_out;
|
|
}
|
|
|
|
if (hisi_sas_alloc(hisi_hba)) {
|
|
hisi_sas_free(hisi_hba);
|
|
goto err_out;
|
|
}
|
|
|
|
return shost;
|
|
err_out:
|
|
scsi_host_put(shost);
|
|
dev_err(dev, "shost alloc failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
int hisi_sas_probe(struct platform_device *pdev,
|
|
const struct hisi_sas_hw *hw)
|
|
{
|
|
struct Scsi_Host *shost;
|
|
struct hisi_hba *hisi_hba;
|
|
struct device *dev = &pdev->dev;
|
|
struct asd_sas_phy **arr_phy;
|
|
struct asd_sas_port **arr_port;
|
|
struct sas_ha_struct *sha;
|
|
int rc, phy_nr, port_nr, i;
|
|
|
|
shost = hisi_sas_shost_alloc(pdev, hw);
|
|
if (!shost)
|
|
return -ENOMEM;
|
|
|
|
sha = SHOST_TO_SAS_HA(shost);
|
|
hisi_hba = shost_priv(shost);
|
|
platform_set_drvdata(pdev, sha);
|
|
|
|
phy_nr = port_nr = hisi_hba->n_phy;
|
|
|
|
arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
|
|
arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
|
|
if (!arr_phy || !arr_port) {
|
|
rc = -ENOMEM;
|
|
goto err_out_ha;
|
|
}
|
|
|
|
sha->sas_phy = arr_phy;
|
|
sha->sas_port = arr_port;
|
|
sha->lldd_ha = hisi_hba;
|
|
|
|
shost->transportt = hisi_sas_stt;
|
|
shost->max_id = HISI_SAS_MAX_DEVICES;
|
|
shost->max_lun = ~0;
|
|
shost->max_channel = 1;
|
|
shost->max_cmd_len = 16;
|
|
if (hisi_hba->hw->slot_index_alloc) {
|
|
shost->can_queue = hisi_hba->hw->max_command_entries;
|
|
shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
|
|
} else {
|
|
shost->can_queue = hisi_hba->hw->max_command_entries -
|
|
HISI_SAS_RESERVED_IPTT_CNT;
|
|
shost->cmd_per_lun = hisi_hba->hw->max_command_entries -
|
|
HISI_SAS_RESERVED_IPTT_CNT;
|
|
}
|
|
|
|
sha->sas_ha_name = DRV_NAME;
|
|
sha->dev = hisi_hba->dev;
|
|
sha->lldd_module = THIS_MODULE;
|
|
sha->sas_addr = &hisi_hba->sas_addr[0];
|
|
sha->num_phys = hisi_hba->n_phy;
|
|
sha->core.shost = hisi_hba->shost;
|
|
|
|
for (i = 0; i < hisi_hba->n_phy; i++) {
|
|
sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
|
|
sha->sas_port[i] = &hisi_hba->port[i].sas_port;
|
|
}
|
|
|
|
rc = scsi_add_host(shost, &pdev->dev);
|
|
if (rc)
|
|
goto err_out_ha;
|
|
|
|
rc = sas_register_ha(sha);
|
|
if (rc)
|
|
goto err_out_register_ha;
|
|
|
|
rc = hisi_hba->hw->hw_init(hisi_hba);
|
|
if (rc)
|
|
goto err_out_register_ha;
|
|
|
|
scsi_scan_host(shost);
|
|
|
|
return 0;
|
|
|
|
err_out_register_ha:
|
|
scsi_remove_host(shost);
|
|
err_out_ha:
|
|
hisi_sas_free(hisi_hba);
|
|
scsi_host_put(shost);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_probe);
|
|
|
|
struct dentry *hisi_sas_debugfs_dir;
|
|
|
|
static void hisi_sas_debugfs_snapshot_cq_reg(struct hisi_hba *hisi_hba)
|
|
{
|
|
int queue_entry_size = hisi_hba->hw->complete_hdr_size;
|
|
int i;
|
|
|
|
for (i = 0; i < hisi_hba->queue_count; i++)
|
|
memcpy(hisi_hba->debugfs_complete_hdr[i],
|
|
hisi_hba->complete_hdr[i],
|
|
HISI_SAS_QUEUE_SLOTS * queue_entry_size);
|
|
}
|
|
|
|
static void hisi_sas_debugfs_snapshot_dq_reg(struct hisi_hba *hisi_hba)
|
|
{
|
|
int queue_entry_size = sizeof(struct hisi_sas_cmd_hdr);
|
|
int i;
|
|
|
|
for (i = 0; i < hisi_hba->queue_count; i++) {
|
|
struct hisi_sas_cmd_hdr *debugfs_cmd_hdr, *cmd_hdr;
|
|
int j;
|
|
|
|
debugfs_cmd_hdr = hisi_hba->debugfs_cmd_hdr[i];
|
|
cmd_hdr = hisi_hba->cmd_hdr[i];
|
|
|
|
for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
|
|
memcpy(&debugfs_cmd_hdr[j], &cmd_hdr[j],
|
|
queue_entry_size);
|
|
}
|
|
}
|
|
|
|
static void hisi_sas_debugfs_snapshot_port_reg(struct hisi_hba *hisi_hba)
|
|
{
|
|
const struct hisi_sas_debugfs_reg *port =
|
|
hisi_hba->hw->debugfs_reg_port;
|
|
int i, phy_cnt;
|
|
u32 offset;
|
|
u32 *databuf;
|
|
|
|
for (phy_cnt = 0; phy_cnt < hisi_hba->n_phy; phy_cnt++) {
|
|
databuf = (u32 *)hisi_hba->debugfs_port_reg[phy_cnt];
|
|
for (i = 0; i < port->count; i++, databuf++) {
|
|
offset = port->base_off + 4 * i;
|
|
*databuf = port->read_port_reg(hisi_hba, phy_cnt,
|
|
offset);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void hisi_sas_debugfs_snapshot_global_reg(struct hisi_hba *hisi_hba)
|
|
{
|
|
u32 *databuf = (u32 *)hisi_hba->debugfs_global_reg;
|
|
const struct hisi_sas_debugfs_reg *global =
|
|
hisi_hba->hw->debugfs_reg_global;
|
|
int i;
|
|
|
|
for (i = 0; i < global->count; i++, databuf++)
|
|
*databuf = global->read_global_reg(hisi_hba, 4 * i);
|
|
}
|
|
|
|
static void hisi_sas_debugfs_snapshot_itct_reg(struct hisi_hba *hisi_hba)
|
|
{
|
|
void *databuf = hisi_hba->debugfs_itct;
|
|
struct hisi_sas_itct *itct;
|
|
int i;
|
|
|
|
itct = hisi_hba->itct;
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, itct++) {
|
|
memcpy(databuf, itct, sizeof(struct hisi_sas_itct));
|
|
databuf += sizeof(struct hisi_sas_itct);
|
|
}
|
|
}
|
|
|
|
static void hisi_sas_debugfs_snapshot_iost_reg(struct hisi_hba *hisi_hba)
|
|
{
|
|
int max_command_entries = hisi_hba->hw->max_command_entries;
|
|
void *databuf = hisi_hba->debugfs_iost;
|
|
struct hisi_sas_iost *iost;
|
|
int i;
|
|
|
|
iost = hisi_hba->iost;
|
|
|
|
for (i = 0; i < max_command_entries; i++, iost++) {
|
|
memcpy(databuf, iost, sizeof(struct hisi_sas_iost));
|
|
databuf += sizeof(struct hisi_sas_iost);
|
|
}
|
|
}
|
|
|
|
static const char *
|
|
hisi_sas_debugfs_to_reg_name(int off, int base_off,
|
|
const struct hisi_sas_debugfs_reg_lu *lu)
|
|
{
|
|
for (; lu->name; lu++) {
|
|
if (off == lu->off - base_off)
|
|
return lu->name;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void hisi_sas_debugfs_print_reg(u32 *regs_val, const void *ptr,
|
|
struct seq_file *s)
|
|
{
|
|
const struct hisi_sas_debugfs_reg *reg = ptr;
|
|
int i;
|
|
|
|
for (i = 0; i < reg->count; i++) {
|
|
int off = i * 4;
|
|
const char *name;
|
|
|
|
name = hisi_sas_debugfs_to_reg_name(off, reg->base_off,
|
|
reg->lu);
|
|
|
|
if (name)
|
|
seq_printf(s, "0x%08x 0x%08x %s\n", off,
|
|
regs_val[i], name);
|
|
else
|
|
seq_printf(s, "0x%08x 0x%08x\n", off,
|
|
regs_val[i]);
|
|
}
|
|
}
|
|
|
|
static int hisi_sas_debugfs_global_show(struct seq_file *s, void *p)
|
|
{
|
|
struct hisi_hba *hisi_hba = s->private;
|
|
const struct hisi_sas_hw *hw = hisi_hba->hw;
|
|
const struct hisi_sas_debugfs_reg *reg_global = hw->debugfs_reg_global;
|
|
|
|
hisi_sas_debugfs_print_reg(hisi_hba->debugfs_global_reg,
|
|
reg_global, s);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_debugfs_global_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, hisi_sas_debugfs_global_show,
|
|
inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations hisi_sas_debugfs_global_fops = {
|
|
.open = hisi_sas_debugfs_global_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int hisi_sas_debugfs_port_show(struct seq_file *s, void *p)
|
|
{
|
|
struct hisi_sas_phy *phy = s->private;
|
|
struct hisi_hba *hisi_hba = phy->hisi_hba;
|
|
const struct hisi_sas_hw *hw = hisi_hba->hw;
|
|
const struct hisi_sas_debugfs_reg *reg_port = hw->debugfs_reg_port;
|
|
u32 *databuf = hisi_hba->debugfs_port_reg[phy->sas_phy.id];
|
|
|
|
hisi_sas_debugfs_print_reg(databuf, reg_port, s);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_debugfs_port_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, hisi_sas_debugfs_port_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations hisi_sas_debugfs_port_fops = {
|
|
.open = hisi_sas_debugfs_port_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int hisi_sas_show_row_64(struct seq_file *s, int index,
|
|
int sz, __le64 *ptr)
|
|
{
|
|
int i;
|
|
|
|
/* completion header size not fixed per HW version */
|
|
seq_printf(s, "index %04d:\n\t", index);
|
|
for (i = 1; i <= sz / 8; i++, ptr++) {
|
|
seq_printf(s, " 0x%016llx", le64_to_cpu(*ptr));
|
|
if (!(i % 2))
|
|
seq_puts(s, "\n\t");
|
|
}
|
|
|
|
seq_puts(s, "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_show_row_32(struct seq_file *s, int index,
|
|
int sz, __le32 *ptr)
|
|
{
|
|
int i;
|
|
|
|
/* completion header size not fixed per HW version */
|
|
seq_printf(s, "index %04d:\n\t", index);
|
|
for (i = 1; i <= sz / 4; i++, ptr++) {
|
|
seq_printf(s, " 0x%08x", le32_to_cpu(*ptr));
|
|
if (!(i % 4))
|
|
seq_puts(s, "\n\t");
|
|
}
|
|
seq_puts(s, "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_cq_show_slot(struct seq_file *s, int slot, void *cq_ptr)
|
|
{
|
|
struct hisi_sas_cq *cq = cq_ptr;
|
|
struct hisi_hba *hisi_hba = cq->hisi_hba;
|
|
void *complete_queue = hisi_hba->debugfs_complete_hdr[cq->id];
|
|
__le32 *complete_hdr = complete_queue +
|
|
(hisi_hba->hw->complete_hdr_size * slot);
|
|
|
|
return hisi_sas_show_row_32(s, slot,
|
|
hisi_hba->hw->complete_hdr_size,
|
|
complete_hdr);
|
|
}
|
|
|
|
static int hisi_sas_debugfs_cq_show(struct seq_file *s, void *p)
|
|
{
|
|
struct hisi_sas_cq *cq = s->private;
|
|
int slot, ret;
|
|
|
|
for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
|
|
ret = hisi_sas_cq_show_slot(s, slot, cq);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_debugfs_cq_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, hisi_sas_debugfs_cq_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations hisi_sas_debugfs_cq_fops = {
|
|
.open = hisi_sas_debugfs_cq_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int hisi_sas_dq_show_slot(struct seq_file *s, int slot, void *dq_ptr)
|
|
{
|
|
struct hisi_sas_dq *dq = dq_ptr;
|
|
struct hisi_hba *hisi_hba = dq->hisi_hba;
|
|
void *cmd_queue = hisi_hba->debugfs_cmd_hdr[dq->id];
|
|
__le32 *cmd_hdr = cmd_queue +
|
|
sizeof(struct hisi_sas_cmd_hdr) * slot;
|
|
|
|
return hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr),
|
|
cmd_hdr);
|
|
}
|
|
|
|
static int hisi_sas_debugfs_dq_show(struct seq_file *s, void *p)
|
|
{
|
|
int slot, ret;
|
|
|
|
for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
|
|
ret = hisi_sas_dq_show_slot(s, slot, s->private);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_debugfs_dq_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, hisi_sas_debugfs_dq_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations hisi_sas_debugfs_dq_fops = {
|
|
.open = hisi_sas_debugfs_dq_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int hisi_sas_debugfs_iost_show(struct seq_file *s, void *p)
|
|
{
|
|
struct hisi_hba *hisi_hba = s->private;
|
|
struct hisi_sas_iost *debugfs_iost = hisi_hba->debugfs_iost;
|
|
int i, ret, max_command_entries = hisi_hba->hw->max_command_entries;
|
|
__le64 *iost = &debugfs_iost->qw0;
|
|
|
|
for (i = 0; i < max_command_entries; i++, debugfs_iost++) {
|
|
ret = hisi_sas_show_row_64(s, i, sizeof(*debugfs_iost),
|
|
iost);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_debugfs_iost_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, hisi_sas_debugfs_iost_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations hisi_sas_debugfs_iost_fops = {
|
|
.open = hisi_sas_debugfs_iost_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int hisi_sas_debugfs_itct_show(struct seq_file *s, void *p)
|
|
{
|
|
int i, ret;
|
|
struct hisi_hba *hisi_hba = s->private;
|
|
struct hisi_sas_itct *debugfs_itct = hisi_hba->debugfs_itct;
|
|
__le64 *itct = &debugfs_itct->qw0;
|
|
|
|
for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, debugfs_itct++) {
|
|
ret = hisi_sas_show_row_64(s, i, sizeof(*debugfs_itct),
|
|
itct);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hisi_sas_debugfs_itct_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return single_open(filp, hisi_sas_debugfs_itct_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations hisi_sas_debugfs_itct_fops = {
|
|
.open = hisi_sas_debugfs_itct_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
|
|
{
|
|
struct dentry *dump_dentry;
|
|
struct dentry *dentry;
|
|
char name[256];
|
|
int p;
|
|
int c;
|
|
int d;
|
|
|
|
/* Create dump dir inside device dir */
|
|
dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
|
|
hisi_hba->debugfs_dump_dentry = dump_dentry;
|
|
|
|
debugfs_create_file("global", 0400, dump_dentry, hisi_hba,
|
|
&hisi_sas_debugfs_global_fops);
|
|
|
|
/* Create port dir and files */
|
|
dentry = debugfs_create_dir("port", dump_dentry);
|
|
for (p = 0; p < hisi_hba->n_phy; p++) {
|
|
snprintf(name, 256, "%d", p);
|
|
|
|
debugfs_create_file(name, 0400, dentry, &hisi_hba->phy[p],
|
|
&hisi_sas_debugfs_port_fops);
|
|
}
|
|
|
|
/* Create CQ dir and files */
|
|
dentry = debugfs_create_dir("cq", dump_dentry);
|
|
for (c = 0; c < hisi_hba->queue_count; c++) {
|
|
snprintf(name, 256, "%d", c);
|
|
|
|
debugfs_create_file(name, 0400, dentry, &hisi_hba->cq[c],
|
|
&hisi_sas_debugfs_cq_fops);
|
|
}
|
|
|
|
/* Create DQ dir and files */
|
|
dentry = debugfs_create_dir("dq", dump_dentry);
|
|
for (d = 0; d < hisi_hba->queue_count; d++) {
|
|
snprintf(name, 256, "%d", d);
|
|
|
|
debugfs_create_file(name, 0400, dentry, &hisi_hba->dq[d],
|
|
&hisi_sas_debugfs_dq_fops);
|
|
}
|
|
|
|
debugfs_create_file("iost", 0400, dump_dentry, hisi_hba,
|
|
&hisi_sas_debugfs_iost_fops);
|
|
|
|
debugfs_create_file("itct", 0400, dump_dentry, hisi_hba,
|
|
&hisi_sas_debugfs_itct_fops);
|
|
|
|
return;
|
|
}
|
|
|
|
static void hisi_sas_debugfs_snapshot_regs(struct hisi_hba *hisi_hba)
|
|
{
|
|
hisi_hba->hw->snapshot_prepare(hisi_hba);
|
|
|
|
hisi_sas_debugfs_snapshot_global_reg(hisi_hba);
|
|
hisi_sas_debugfs_snapshot_port_reg(hisi_hba);
|
|
hisi_sas_debugfs_snapshot_cq_reg(hisi_hba);
|
|
hisi_sas_debugfs_snapshot_dq_reg(hisi_hba);
|
|
hisi_sas_debugfs_snapshot_itct_reg(hisi_hba);
|
|
hisi_sas_debugfs_snapshot_iost_reg(hisi_hba);
|
|
|
|
hisi_sas_debugfs_create_files(hisi_hba);
|
|
|
|
hisi_hba->hw->snapshot_restore(hisi_hba);
|
|
}
|
|
|
|
static ssize_t hisi_sas_debugfs_trigger_dump_write(struct file *file,
|
|
const char __user *user_buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct hisi_hba *hisi_hba = file->f_inode->i_private;
|
|
char buf[8];
|
|
|
|
/* A bit racy, but don't care too much since it's only debugfs */
|
|
if (hisi_hba->debugfs_snapshot)
|
|
return -EFAULT;
|
|
|
|
if (count > 8)
|
|
return -EFAULT;
|
|
|
|
if (copy_from_user(buf, user_buf, count))
|
|
return -EFAULT;
|
|
|
|
if (buf[0] != '1')
|
|
return -EFAULT;
|
|
|
|
queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations hisi_sas_debugfs_trigger_dump_fops = {
|
|
.write = &hisi_sas_debugfs_trigger_dump_write,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
void hisi_sas_debugfs_work_handler(struct work_struct *work)
|
|
{
|
|
struct hisi_hba *hisi_hba =
|
|
container_of(work, struct hisi_hba, debugfs_work);
|
|
|
|
if (hisi_hba->debugfs_snapshot)
|
|
return;
|
|
hisi_hba->debugfs_snapshot = true;
|
|
|
|
hisi_sas_debugfs_snapshot_regs(hisi_hba);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_debugfs_work_handler);
|
|
|
|
void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba)
|
|
{
|
|
int max_command_entries = hisi_hba->hw->max_command_entries;
|
|
struct device *dev = hisi_hba->dev;
|
|
int p, i, c, d;
|
|
size_t sz;
|
|
|
|
hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev),
|
|
hisi_sas_debugfs_dir);
|
|
debugfs_create_file("trigger_dump", 0600,
|
|
hisi_hba->debugfs_dir,
|
|
hisi_hba,
|
|
&hisi_sas_debugfs_trigger_dump_fops);
|
|
|
|
/* Alloc buffer for global */
|
|
sz = hisi_hba->hw->debugfs_reg_global->count * 4;
|
|
hisi_hba->debugfs_global_reg =
|
|
devm_kmalloc(dev, sz, GFP_KERNEL);
|
|
|
|
if (!hisi_hba->debugfs_global_reg)
|
|
goto fail_global;
|
|
|
|
/* Alloc buffer for port */
|
|
sz = hisi_hba->hw->debugfs_reg_port->count * 4;
|
|
for (p = 0; p < hisi_hba->n_phy; p++) {
|
|
hisi_hba->debugfs_port_reg[p] =
|
|
devm_kmalloc(dev, sz, GFP_KERNEL);
|
|
|
|
if (!hisi_hba->debugfs_port_reg[p])
|
|
goto fail_port;
|
|
}
|
|
|
|
/* Alloc buffer for cq */
|
|
sz = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
|
|
for (c = 0; c < hisi_hba->queue_count; c++) {
|
|
hisi_hba->debugfs_complete_hdr[c] =
|
|
devm_kmalloc(dev, sz, GFP_KERNEL);
|
|
|
|
if (!hisi_hba->debugfs_complete_hdr[c])
|
|
goto fail_cq;
|
|
}
|
|
|
|
/* Alloc buffer for dq */
|
|
sz = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
|
|
for (d = 0; d < hisi_hba->queue_count; d++) {
|
|
hisi_hba->debugfs_cmd_hdr[d] =
|
|
devm_kmalloc(dev, sz, GFP_KERNEL);
|
|
|
|
if (!hisi_hba->debugfs_cmd_hdr[d])
|
|
goto fail_iost_dq;
|
|
}
|
|
|
|
/* Alloc buffer for iost */
|
|
sz = max_command_entries * sizeof(struct hisi_sas_iost);
|
|
|
|
hisi_hba->debugfs_iost = devm_kmalloc(dev, sz, GFP_KERNEL);
|
|
if (!hisi_hba->debugfs_iost)
|
|
goto fail_iost_dq;
|
|
|
|
/* Alloc buffer for itct */
|
|
/* New memory allocation must be locate before itct */
|
|
sz = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
|
|
|
|
hisi_hba->debugfs_itct = devm_kmalloc(dev, sz, GFP_KERNEL);
|
|
if (!hisi_hba->debugfs_itct)
|
|
goto fail_itct;
|
|
|
|
return;
|
|
fail_itct:
|
|
devm_kfree(dev, hisi_hba->debugfs_iost);
|
|
fail_iost_dq:
|
|
for (i = 0; i < d; i++)
|
|
devm_kfree(dev, hisi_hba->debugfs_cmd_hdr[i]);
|
|
fail_cq:
|
|
for (i = 0; i < c; i++)
|
|
devm_kfree(dev, hisi_hba->debugfs_complete_hdr[i]);
|
|
fail_port:
|
|
for (i = 0; i < p; i++)
|
|
devm_kfree(dev, hisi_hba->debugfs_port_reg[i]);
|
|
devm_kfree(dev, hisi_hba->debugfs_global_reg);
|
|
fail_global:
|
|
debugfs_remove_recursive(hisi_hba->debugfs_dir);
|
|
dev_dbg(dev, "failed to init debugfs!\n");
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init);
|
|
|
|
void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba)
|
|
{
|
|
debugfs_remove_recursive(hisi_hba->debugfs_dir);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_debugfs_exit);
|
|
|
|
int hisi_sas_remove(struct platform_device *pdev)
|
|
{
|
|
struct sas_ha_struct *sha = platform_get_drvdata(pdev);
|
|
struct hisi_hba *hisi_hba = sha->lldd_ha;
|
|
struct Scsi_Host *shost = sha->core.shost;
|
|
|
|
if (timer_pending(&hisi_hba->timer))
|
|
del_timer(&hisi_hba->timer);
|
|
|
|
sas_unregister_ha(sha);
|
|
sas_remove_host(sha->core.shost);
|
|
|
|
hisi_sas_free(hisi_hba);
|
|
scsi_host_put(shost);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_remove);
|
|
|
|
bool hisi_sas_debugfs_enable;
|
|
EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);
|
|
module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);
|
|
MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default disabled)");
|
|
|
|
static __init int hisi_sas_init(void)
|
|
{
|
|
hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
|
|
if (!hisi_sas_stt)
|
|
return -ENOMEM;
|
|
|
|
if (hisi_sas_debugfs_enable)
|
|
hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __exit void hisi_sas_exit(void)
|
|
{
|
|
sas_release_transport(hisi_sas_stt);
|
|
|
|
debugfs_remove(hisi_sas_debugfs_dir);
|
|
}
|
|
|
|
module_init(hisi_sas_init);
|
|
module_exit(hisi_sas_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
|
|
MODULE_DESCRIPTION("HISILICON SAS controller driver");
|
|
MODULE_ALIAS("platform:" DRV_NAME);
|