![Xiaofei Tan](/assets/img/avatar_default.png)
Currently we allocate 3 sets of DMA memories from separate pools for each slot. This is inefficient in terms of memory usage (buffers are less than 1 page in size, so we lose due to alignment), and also time spent in doing 3 allocations + de-allocations per slot, instead of 1. To optimise, combine the 3 DMA buffers into a single buffer from a single pool. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
1963 lines
52 KiB
C
1963 lines
52 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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u8 hisi_sas_get_ata_protocol(u8 cmd, int direction)
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{
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switch (cmd) {
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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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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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return HISI_SAS_SATA_PROTOCOL_NONDATA;
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default:
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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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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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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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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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hisi_sas_slot_index_clear(hisi_hba, slot_idx);
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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, int *slot_idx)
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{
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unsigned int index;
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void *bitmap = hisi_hba->slot_index_tags;
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index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count);
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if (index >= hisi_hba->slot_index_count)
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return -SAS_QUEUE_FULL;
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hisi_sas_slot_index_set(hisi_hba, index);
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*slot_idx = index;
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return 0;
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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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if (task) {
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struct device *dev = hisi_hba->dev;
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struct domain_device *device = task->dev;
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struct hisi_sas_device *sas_dev = device->lldd_dev;
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if (!sas_protocol_ata(task->task_proto))
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if (slot->n_elem)
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dma_unmap_sg(dev, task->scatter, slot->n_elem,
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task->data_dir);
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task->lldd_task = NULL;
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if (sas_dev)
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atomic64_dec(&sas_dev->running_req);
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}
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if (slot->buf)
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dma_pool_free(hisi_hba->buffer_pool, slot->buf, slot->buf_dma);
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list_del_init(&slot->entry);
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slot->task = NULL;
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slot->port = NULL;
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hisi_sas_slot_index_free(hisi_hba, slot->idx);
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/* slot memory is fully zeroed when it is reused */
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}
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EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
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static int 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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return hisi_hba->hw->prep_smp(hisi_hba, slot);
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}
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static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
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struct hisi_sas_slot *slot, int is_tmf,
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struct hisi_sas_tmf_task *tmf)
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{
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return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf);
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}
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static int 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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return hisi_hba->hw->prep_stp(hisi_hba, slot);
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}
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static int 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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return 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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/*
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* This function will issue an abort TMF regardless of whether the
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* task is in the sdev or not. Then it will do the task complete
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* cleanup and callbacks.
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*/
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static void hisi_sas_slot_abort(struct work_struct *work)
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{
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struct hisi_sas_slot *abort_slot =
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container_of(work, struct hisi_sas_slot, abort_slot);
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struct sas_task *task = abort_slot->task;
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struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
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struct scsi_cmnd *cmnd = task->uldd_task;
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struct hisi_sas_tmf_task tmf_task;
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struct scsi_lun lun;
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struct device *dev = hisi_hba->dev;
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int tag = abort_slot->idx;
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unsigned long flags;
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if (!(task->task_proto & SAS_PROTOCOL_SSP)) {
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dev_err(dev, "cannot abort slot for non-ssp task\n");
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goto out;
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}
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int_to_scsilun(cmnd->device->lun, &lun);
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tmf_task.tmf = TMF_ABORT_TASK;
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tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
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hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task);
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out:
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/* Do cleanup for this task */
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spin_lock_irqsave(&hisi_hba->lock, flags);
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hisi_sas_slot_task_free(hisi_hba, task, abort_slot);
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spin_unlock_irqrestore(&hisi_hba->lock, flags);
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if (task->task_done)
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task->task_done(task);
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}
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static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq
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*dq, int is_tmf, struct hisi_sas_tmf_task *tmf,
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int *pass)
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{
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struct hisi_hba *hisi_hba = dq->hisi_hba;
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struct domain_device *device = task->dev;
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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, n_elem = 0, rc, slot_idx;
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unsigned long flags;
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if (!sas_port) {
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struct task_status_struct *ts = &task->task_status;
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ts->resp = SAS_TASK_UNDELIVERED;
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ts->stat = SAS_PHY_DOWN;
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/*
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* libsas will use dev->port, should
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* not call task_done for sata
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*/
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if (device->dev_type != SAS_SATA_DEV)
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task->task_done(task);
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return SAS_PHY_DOWN;
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}
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if (DEV_IS_GONE(sas_dev)) {
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if (sas_dev)
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dev_info(dev, "task prep: device %d not ready\n",
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sas_dev->device_id);
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else
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dev_info(dev, "task prep: device %016llx not ready\n",
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SAS_ADDR(device->sas_addr));
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return SAS_PHY_DOWN;
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}
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port = to_hisi_sas_port(sas_port);
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if (port && !port->port_attached) {
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dev_info(dev, "task prep: %s port%d not attach device\n",
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(dev_is_sata(device)) ?
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"SATA/STP" : "SAS",
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device->port->id);
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return SAS_PHY_DOWN;
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}
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if (!sas_protocol_ata(task->task_proto)) {
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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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}
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} else
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n_elem = task->num_scatter;
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spin_lock_irqsave(&hisi_hba->lock, flags);
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if (hisi_hba->hw->slot_index_alloc)
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rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx,
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device);
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else
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rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
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if (rc) {
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spin_unlock_irqrestore(&hisi_hba->lock, flags);
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goto err_out;
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}
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spin_unlock_irqrestore(&hisi_hba->lock, flags);
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rc = hisi_hba->hw->get_free_slot(hisi_hba, dq);
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if (rc)
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goto err_out_tag;
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dlvry_queue = dq->id;
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dlvry_queue_slot = dq->wr_point;
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slot = &hisi_hba->slot_info[slot_idx];
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memset(slot, 0, sizeof(struct hisi_sas_slot));
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slot->idx = slot_idx;
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slot->n_elem = n_elem;
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slot->dlvry_queue = dlvry_queue;
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slot->dlvry_queue_slot = dlvry_queue_slot;
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cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
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slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
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slot->task = task;
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slot->port = port;
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task->lldd_task = slot;
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INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort);
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slot->buf = dma_pool_alloc(hisi_hba->buffer_pool,
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GFP_ATOMIC, &slot->buf_dma);
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if (!slot->buf) {
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rc = -ENOMEM;
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goto err_out_slot_buf;
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}
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memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
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memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
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memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
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switch (task->task_proto) {
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case SAS_PROTOCOL_SMP:
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rc = hisi_sas_task_prep_smp(hisi_hba, slot);
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break;
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case SAS_PROTOCOL_SSP:
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rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf);
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break;
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case SAS_PROTOCOL_SATA:
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case SAS_PROTOCOL_STP:
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case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
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rc = hisi_sas_task_prep_ata(hisi_hba, slot);
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break;
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default:
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dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
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task->task_proto);
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rc = -EINVAL;
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break;
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}
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if (rc) {
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dev_err(dev, "task prep: rc = 0x%x\n", rc);
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goto err_out_buf;
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}
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list_add_tail(&slot->entry, &sas_dev->list);
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spin_lock_irqsave(&task->task_state_lock, flags);
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task->task_state_flags |= SAS_TASK_AT_INITIATOR;
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spin_unlock_irqrestore(&task->task_state_lock, flags);
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dq->slot_prep = slot;
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atomic64_inc(&sas_dev->running_req);
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++(*pass);
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return 0;
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err_out_buf:
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dma_pool_free(hisi_hba->buffer_pool, slot->buf,
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slot->buf_dma);
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err_out_slot_buf:
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/* Nothing to be done */
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err_out_tag:
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spin_lock_irqsave(&hisi_hba->lock, flags);
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hisi_sas_slot_index_free(hisi_hba, slot_idx);
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spin_unlock_irqrestore(&hisi_hba->lock, flags);
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err_out:
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dev_err(dev, "task prep: failed[%d]!\n", rc);
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if (!sas_protocol_ata(task->task_proto))
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if (n_elem)
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dma_unmap_sg(dev, task->scatter, n_elem,
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task->data_dir);
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prep_out:
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return rc;
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}
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static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
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int is_tmf, struct hisi_sas_tmf_task *tmf)
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{
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u32 rc;
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u32 pass = 0;
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unsigned long flags;
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struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
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struct device *dev = hisi_hba->dev;
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struct domain_device *device = task->dev;
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struct hisi_sas_device *sas_dev = device->lldd_dev;
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struct hisi_sas_dq *dq = sas_dev->dq;
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if (unlikely(test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)))
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return -EINVAL;
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/* protect task_prep and start_delivery sequence */
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spin_lock_irqsave(&dq->lock, flags);
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|
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))
|
|
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;
|
|
int i;
|
|
|
|
spin_lock(&hisi_hba->lock);
|
|
for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
|
|
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_status = HISI_SAS_DEV_NORMAL;
|
|
sas_dev->dev_type = device->dev_type;
|
|
sas_dev->hisi_hba = hisi_hba;
|
|
sas_dev->sas_device = device;
|
|
sas_dev->dq = dq;
|
|
INIT_LIST_HEAD(&hisi_hba->devices[i].list);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock(&hisi_hba->lock);
|
|
|
|
return sas_dev;
|
|
}
|
|
|
|
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;
|
|
|
|
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)) {
|
|
sas_dev->attached_phy = phy_no;
|
|
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));
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static 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;
|
|
}
|
|
|
|
static void hisi_sas_scan_start(struct Scsi_Host *shost)
|
|
{
|
|
struct hisi_hba *hisi_hba = shost_priv(shost);
|
|
|
|
hisi_hba->hw->phys_init(hisi_hba);
|
|
}
|
|
|
|
static 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;
|
|
}
|
|
|
|
static void hisi_sas_phyup_work(struct work_struct *work)
|
|
{
|
|
struct hisi_sas_phy *phy =
|
|
container_of(work, struct hisi_sas_phy, phyup_ws);
|
|
struct hisi_hba *hisi_hba = phy->hisi_hba;
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
int phy_no = sas_phy->id;
|
|
|
|
hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */
|
|
hisi_sas_bytes_dmaed(hisi_hba, phy_no);
|
|
}
|
|
|
|
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;
|
|
|
|
phy->hisi_hba = hisi_hba;
|
|
phy->port = NULL;
|
|
init_timer(&phy->timer);
|
|
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;
|
|
|
|
INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
/* hisi_hba.lock should be locked */
|
|
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);
|
|
}
|
|
|
|
static 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);
|
|
}
|
|
}
|
|
|
|
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;
|
|
int dev_id = sas_dev->device_id;
|
|
|
|
dev_info(dev, "found dev[%d:%x] is gone\n",
|
|
sas_dev->device_id, sas_dev->dev_type);
|
|
|
|
hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
hisi_hba->hw->free_device(hisi_hba, sas_dev);
|
|
device->lldd_dev = NULL;
|
|
memset(sas_dev, 0, sizeof(*sas_dev));
|
|
sas_dev->device_id = dev_id;
|
|
sas_dev->dev_type = SAS_PHY_UNUSED;
|
|
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
|
|
}
|
|
|
|
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_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_enable(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:
|
|
hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata);
|
|
break;
|
|
|
|
case PHY_FUNC_RELEASE_SPINUP_HOLD:
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void hisi_sas_task_done(struct sas_task *task)
|
|
{
|
|
if (!del_timer(&task->slow_task->timer))
|
|
return;
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
|
|
static void hisi_sas_tmf_timedout(unsigned long data)
|
|
{
|
|
struct sas_task *task = (struct sas_task *)data;
|
|
unsigned long flags;
|
|
|
|
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;
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
|
|
#define TASK_TIMEOUT 20
|
|
#define TASK_RETRY 3
|
|
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.data = (unsigned long) task;
|
|
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\n");
|
|
if (slot)
|
|
slot->task = NULL;
|
|
|
|
goto ex_err;
|
|
}
|
|
}
|
|
|
|
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);
|
|
unsigned long flags;
|
|
|
|
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) {
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
}
|
|
|
|
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 int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
|
|
{
|
|
int rc;
|
|
|
|
if (!hisi_hba->hw->soft_reset)
|
|
return -1;
|
|
|
|
if (!test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
|
|
struct device *dev = hisi_hba->dev;
|
|
struct sas_ha_struct *sas_ha = &hisi_hba->sha;
|
|
unsigned long flags;
|
|
|
|
dev_dbg(dev, "controller reset begins!\n");
|
|
scsi_block_requests(hisi_hba->shost);
|
|
rc = hisi_hba->hw->soft_reset(hisi_hba);
|
|
if (rc) {
|
|
dev_warn(dev, "controller reset failed (%d)\n", rc);
|
|
goto out;
|
|
}
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_release_tasks(hisi_hba);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
|
|
sas_ha->notify_ha_event(sas_ha, HAE_RESET);
|
|
dev_dbg(dev, "controller reset successful!\n");
|
|
} else
|
|
return -1;
|
|
|
|
out:
|
|
scsi_unblock_requests(hisi_hba->shost);
|
|
clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
|
|
return rc;
|
|
}
|
|
|
|
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 = dev_to_hisi_hba(task->dev);
|
|
struct device *dev = hisi_hba->dev;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
unsigned long flags;
|
|
|
|
if (!sas_dev) {
|
|
dev_warn(dev, "Device has been removed\n");
|
|
return TMF_RESP_FUNC_FAILED;
|
|
}
|
|
|
|
if (task->task_state_flags & SAS_TASK_STATE_DONE) {
|
|
rc = TMF_RESP_FUNC_COMPLETE;
|
|
goto out;
|
|
}
|
|
|
|
sas_dev->dev_status = HISI_SAS_DEV_EH;
|
|
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;
|
|
u32 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 = cpu_to_le16(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 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) {
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_do_release_task(hisi_hba, task, slot);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
}
|
|
}
|
|
} else if (task->task_proto & SAS_PROTOCOL_SATA ||
|
|
task->task_proto & SAS_PROTOCOL_STP) {
|
|
if (task->dev->dev_type == SAS_SATA_DEV) {
|
|
hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
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;
|
|
|
|
rc = hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_CMD, tag);
|
|
if (rc == TMF_RESP_FUNC_FAILED) {
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_do_release_task(hisi_hba, task, slot);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
}
|
|
}
|
|
|
|
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_sas_tmf_task tmf_task;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
|
|
tmf_task.tmf = TMF_ABORT_TASK_SET;
|
|
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
|
|
{
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct hisi_sas_tmf_task tmf_task;
|
|
|
|
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 *phy = sas_get_local_phy(device);
|
|
int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
|
|
(device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
|
|
rc = sas_phy_reset(phy, reset_type);
|
|
sas_put_local_phy(phy);
|
|
msleep(2000);
|
|
return rc;
|
|
}
|
|
|
|
static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
|
|
{
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
|
|
unsigned long flags;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
|
|
if (sas_dev->dev_status != HISI_SAS_DEV_EH)
|
|
return TMF_RESP_FUNC_FAILED;
|
|
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
|
|
|
|
hisi_sas_internal_task_abort(hisi_hba, device,
|
|
HISI_SAS_INT_ABT_DEV, 0);
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
rc = hisi_sas_debug_I_T_nexus_reset(device);
|
|
|
|
if (rc == TMF_RESP_FUNC_COMPLETE) {
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
}
|
|
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;
|
|
unsigned long flags;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
|
|
sas_dev->dev_status = HISI_SAS_DEV_EH;
|
|
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 == TMF_RESP_FUNC_FAILED)
|
|
goto out;
|
|
hisi_sas_dereg_device(hisi_hba, device);
|
|
|
|
phy = sas_get_local_phy(device);
|
|
|
|
rc = sas_phy_reset(phy, 1);
|
|
|
|
if (rc == 0) {
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
}
|
|
sas_put_local_phy(phy);
|
|
} else {
|
|
struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
|
|
|
|
rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
|
|
if (rc == TMF_RESP_FUNC_COMPLETE) {
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_release_task(hisi_hba, device);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
}
|
|
}
|
|
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;
|
|
|
|
return hisi_sas_controller_reset(hisi_hba);
|
|
}
|
|
|
|
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 = cpu_to_le16(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 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;
|
|
struct hisi_sas_dq *dq = sas_dev->dq;
|
|
int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
|
|
unsigned long flags, flags_dq;
|
|
|
|
if (unlikely(test_bit(HISI_SAS_RESET_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 */
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
|
|
if (rc) {
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
goto err_out;
|
|
}
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
|
|
spin_lock_irqsave(&dq->lock, flags_dq);
|
|
rc = hisi_hba->hw->get_free_slot(hisi_hba, dq);
|
|
if (rc)
|
|
goto err_out_tag;
|
|
|
|
dlvry_queue = dq->id;
|
|
dlvry_queue_slot = dq->wr_point;
|
|
|
|
slot = &hisi_hba->slot_info[slot_idx];
|
|
memset(slot, 0, sizeof(struct hisi_sas_slot));
|
|
|
|
slot->idx = slot_idx;
|
|
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;
|
|
task->lldd_task = slot;
|
|
|
|
memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
|
|
|
|
rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
|
|
abort_flag, task_tag);
|
|
if (rc)
|
|
goto err_out_tag;
|
|
|
|
|
|
list_add_tail(&slot->entry, &sas_dev->list);
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
task->task_state_flags |= SAS_TASK_AT_INITIATOR;
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
|
|
dq->slot_prep = slot;
|
|
|
|
atomic64_inc(&sas_dev->running_req);
|
|
|
|
/* send abort command to the chip */
|
|
hisi_hba->hw->start_delivery(dq);
|
|
spin_unlock_irqrestore(&dq->lock, flags_dq);
|
|
|
|
return 0;
|
|
|
|
err_out_tag:
|
|
spin_lock_irqsave(&hisi_hba->lock, flags);
|
|
hisi_sas_slot_index_free(hisi_hba, slot_idx);
|
|
spin_unlock_irqrestore(&hisi_hba->lock, flags);
|
|
spin_unlock_irqrestore(&dq->lock, flags_dq);
|
|
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)
|
|
*/
|
|
static int
|
|
hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
|
|
struct domain_device *device,
|
|
int abort_flag, int tag)
|
|
{
|
|
struct sas_task *task;
|
|
struct hisi_sas_device *sas_dev = device->lldd_dev;
|
|
struct device *dev = hisi_hba->dev;
|
|
int res;
|
|
|
|
if (!hisi_hba->hw->prep_abort)
|
|
return -EOPNOTSUPP;
|
|
|
|
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.data = (unsigned long)task;
|
|
task->slow_task->timer.function = hisi_sas_tmf_timedout;
|
|
task->slow_task->timer.expires = jiffies + msecs_to_jiffies(110);
|
|
add_timer(&task->slow_task->timer);
|
|
|
|
res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
|
|
task, abort_flag, tag);
|
|
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)
|
|
slot->task = NULL;
|
|
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 void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
|
|
{
|
|
hisi_sas_port_notify_formed(sas_phy);
|
|
}
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
/* 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_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state,
|
|
u32 state)
|
|
{
|
|
struct sas_ha_struct *sas_ha = &hisi_hba->sha;
|
|
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;
|
|
struct domain_device *dev;
|
|
|
|
if (sas_phy->enabled) {
|
|
/* Report PHY state change to libsas */
|
|
if (state & (1 << phy_no))
|
|
continue;
|
|
|
|
if (old_state & (1 << phy_no))
|
|
/* PHY down but was up before */
|
|
hisi_sas_phy_down(hisi_hba, phy_no, 0);
|
|
}
|
|
if (!sas_port)
|
|
continue;
|
|
dev = sas_port->port_dev;
|
|
|
|
if (DEV_IS_EXPANDER(dev->dev_type))
|
|
sas_ha->notify_phy_event(sas_phy, PORTE_BROADCAST_RCVD);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_rescan_topology);
|
|
|
|
struct scsi_transport_template *hisi_sas_stt;
|
|
EXPORT_SYMBOL_GPL(hisi_sas_stt);
|
|
|
|
static struct scsi_host_template _hisi_sas_sht = {
|
|
.module = THIS_MODULE,
|
|
.name = DRV_NAME,
|
|
.queuecommand = sas_queuecommand,
|
|
.target_alloc = sas_target_alloc,
|
|
.slave_configure = hisi_sas_slave_configure,
|
|
.scan_finished = hisi_sas_scan_finished,
|
|
.scan_start = hisi_sas_scan_start,
|
|
.change_queue_depth = sas_change_queue_depth,
|
|
.bios_param = sas_bios_param,
|
|
.can_queue = 1,
|
|
.this_id = -1,
|
|
.sg_tablesize = SG_ALL,
|
|
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.eh_device_reset_handler = sas_eh_device_reset_handler,
|
|
.eh_bus_reset_handler = sas_eh_bus_reset_handler,
|
|
.target_destroy = sas_target_destroy,
|
|
.ioctl = sas_ioctl,
|
|
};
|
|
struct scsi_host_template *hisi_sas_sht = &_hisi_sas_sht;
|
|
EXPORT_SYMBOL_GPL(hisi_sas_sht);
|
|
|
|
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,
|
|
};
|
|
|
|
void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
|
|
{
|
|
int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
|
|
|
|
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];
|
|
|
|
s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
|
|
memset(hisi_hba->cmd_hdr[i], 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 = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
|
|
memset(hisi_hba->sata_breakpoint, 0, s);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
|
|
|
|
int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
|
|
{
|
|
struct device *dev = hisi_hba->dev;
|
|
int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
|
|
|
|
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;
|
|
hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL;
|
|
}
|
|
|
|
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 */
|
|
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] = dma_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] = dma_alloc_coherent(dev, s,
|
|
&hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
|
|
if (!hisi_hba->complete_hdr[i])
|
|
goto err_out;
|
|
}
|
|
|
|
s = sizeof(struct hisi_sas_slot_buf_table);
|
|
hisi_hba->buffer_pool = dma_pool_create("dma_buffer", dev, s, 16, 0);
|
|
if (!hisi_hba->buffer_pool)
|
|
goto err_out;
|
|
|
|
s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
|
|
hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
|
|
GFP_KERNEL);
|
|
if (!hisi_hba->itct)
|
|
goto err_out;
|
|
|
|
memset(hisi_hba->itct, 0, s);
|
|
|
|
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;
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_iost);
|
|
hisi_hba->iost = dma_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 = dma_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 = dma_alloc_coherent(dev, s,
|
|
&hisi_hba->initial_fis_dma, GFP_KERNEL);
|
|
if (!hisi_hba->initial_fis)
|
|
goto err_out;
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
|
|
hisi_hba->sata_breakpoint = dma_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->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)
|
|
{
|
|
struct device *dev = hisi_hba->dev;
|
|
int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
|
|
|
|
for (i = 0; i < hisi_hba->queue_count; i++) {
|
|
s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
|
|
if (hisi_hba->cmd_hdr[i])
|
|
dma_free_coherent(dev, s,
|
|
hisi_hba->cmd_hdr[i],
|
|
hisi_hba->cmd_hdr_dma[i]);
|
|
|
|
s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
|
|
if (hisi_hba->complete_hdr[i])
|
|
dma_free_coherent(dev, s,
|
|
hisi_hba->complete_hdr[i],
|
|
hisi_hba->complete_hdr_dma[i]);
|
|
}
|
|
|
|
dma_pool_destroy(hisi_hba->buffer_pool);
|
|
|
|
s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
|
|
if (hisi_hba->itct)
|
|
dma_free_coherent(dev, s,
|
|
hisi_hba->itct, hisi_hba->itct_dma);
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_iost);
|
|
if (hisi_hba->iost)
|
|
dma_free_coherent(dev, s,
|
|
hisi_hba->iost, hisi_hba->iost_dma);
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
|
|
if (hisi_hba->breakpoint)
|
|
dma_free_coherent(dev, s,
|
|
hisi_hba->breakpoint,
|
|
hisi_hba->breakpoint_dma);
|
|
|
|
|
|
s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
|
|
if (hisi_hba->initial_fis)
|
|
dma_free_coherent(dev, s,
|
|
hisi_hba->initial_fis,
|
|
hisi_hba->initial_fis_dma);
|
|
|
|
s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
|
|
if (hisi_hba->sata_breakpoint)
|
|
dma_free_coherent(dev, s,
|
|
hisi_hba->sata_breakpoint,
|
|
hisi_hba->sata_breakpoint_dma);
|
|
|
|
if (hisi_hba->wq)
|
|
destroy_workqueue(hisi_hba->wq);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_free);
|
|
|
|
static 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);
|
|
}
|
|
|
|
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;
|
|
|
|
shost = scsi_host_alloc(hisi_sas_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;
|
|
|
|
init_timer(&hisi_hba->timer);
|
|
|
|
if (hisi_sas_get_fw_info(hisi_hba) < 0)
|
|
goto err_out;
|
|
|
|
if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
|
|
dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
|
|
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;
|
|
|
|
if (hisi_sas_alloc(hisi_hba, shost)) {
|
|
hisi_sas_free(hisi_hba);
|
|
goto err_out;
|
|
}
|
|
|
|
return shost;
|
|
err_out:
|
|
kfree(shost);
|
|
dev_err(dev, "shost alloc failed\n");
|
|
return NULL;
|
|
}
|
|
|
|
void hisi_sas_init_add(struct hisi_hba *hisi_hba)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < hisi_hba->n_phy; i++)
|
|
memcpy(&hisi_hba->phy[i].dev_sas_addr,
|
|
hisi_hba->sas_addr,
|
|
SAS_ADDR_SIZE);
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_init_add);
|
|
|
|
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;
|
|
shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
|
|
shost->can_queue = hisi_hba->hw->max_command_entries;
|
|
shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
|
|
|
|
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;
|
|
}
|
|
|
|
hisi_sas_init_add(hisi_hba);
|
|
|
|
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);
|
|
kfree(shost);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_probe);
|
|
|
|
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;
|
|
|
|
sas_unregister_ha(sha);
|
|
sas_remove_host(sha->core.shost);
|
|
|
|
hisi_sas_free(hisi_hba);
|
|
kfree(shost);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(hisi_sas_remove);
|
|
|
|
static __init int hisi_sas_init(void)
|
|
{
|
|
pr_info("hisi_sas: driver version %s\n", DRV_VERSION);
|
|
|
|
hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
|
|
if (!hisi_sas_stt)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __exit void hisi_sas_exit(void)
|
|
{
|
|
sas_release_transport(hisi_sas_stt);
|
|
}
|
|
|
|
module_init(hisi_sas_init);
|
|
module_exit(hisi_sas_exit);
|
|
|
|
MODULE_VERSION(DRV_VERSION);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
|
|
MODULE_DESCRIPTION("HISILICON SAS controller driver");
|
|
MODULE_ALIAS("platform:" DRV_NAME);
|