2108 lines
54 KiB
C
2108 lines
54 KiB
C
/*
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* Marvell 88SE64xx/88SE94xx main function
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*
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* Copyright 2007 Red Hat, Inc.
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* Copyright 2008 Marvell. <kewei@marvell.com>
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* Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
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*
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* This file is licensed under GPLv2.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of the
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* License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include "mv_sas.h"
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static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
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{
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if (task->lldd_task) {
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struct mvs_slot_info *slot;
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slot = task->lldd_task;
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*tag = slot->slot_tag;
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return 1;
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}
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return 0;
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}
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void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
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{
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void *bitmap = mvi->tags;
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clear_bit(tag, bitmap);
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}
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void mvs_tag_free(struct mvs_info *mvi, u32 tag)
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{
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mvs_tag_clear(mvi, tag);
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}
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void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
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{
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void *bitmap = mvi->tags;
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set_bit(tag, bitmap);
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}
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inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
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{
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unsigned int index, tag;
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void *bitmap = mvi->tags;
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index = find_first_zero_bit(bitmap, mvi->tags_num);
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tag = index;
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if (tag >= mvi->tags_num)
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return -SAS_QUEUE_FULL;
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mvs_tag_set(mvi, tag);
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*tag_out = tag;
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return 0;
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}
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void mvs_tag_init(struct mvs_info *mvi)
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{
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int i;
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for (i = 0; i < mvi->tags_num; ++i)
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mvs_tag_clear(mvi, i);
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}
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struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
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{
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unsigned long i = 0, j = 0, hi = 0;
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struct sas_ha_struct *sha = dev->port->ha;
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struct mvs_info *mvi = NULL;
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struct asd_sas_phy *phy;
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while (sha->sas_port[i]) {
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if (sha->sas_port[i] == dev->port) {
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phy = container_of(sha->sas_port[i]->phy_list.next,
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struct asd_sas_phy, port_phy_el);
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j = 0;
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while (sha->sas_phy[j]) {
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if (sha->sas_phy[j] == phy)
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break;
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j++;
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}
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break;
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}
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i++;
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}
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hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
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mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
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return mvi;
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}
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int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
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{
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unsigned long i = 0, j = 0, n = 0, num = 0;
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struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
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struct mvs_info *mvi = mvi_dev->mvi_info;
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struct sas_ha_struct *sha = dev->port->ha;
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while (sha->sas_port[i]) {
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if (sha->sas_port[i] == dev->port) {
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struct asd_sas_phy *phy;
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list_for_each_entry(phy,
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&sha->sas_port[i]->phy_list, port_phy_el) {
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j = 0;
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while (sha->sas_phy[j]) {
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if (sha->sas_phy[j] == phy)
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break;
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j++;
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}
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phyno[n] = (j >= mvi->chip->n_phy) ?
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(j - mvi->chip->n_phy) : j;
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num++;
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n++;
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}
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break;
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}
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i++;
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}
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return num;
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}
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struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
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u8 reg_set)
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{
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u32 dev_no;
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for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
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if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
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continue;
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if (mvi->devices[dev_no].taskfileset == reg_set)
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return &mvi->devices[dev_no];
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}
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return NULL;
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}
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static inline void mvs_free_reg_set(struct mvs_info *mvi,
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struct mvs_device *dev)
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{
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if (!dev) {
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mv_printk("device has been free.\n");
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return;
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}
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if (dev->taskfileset == MVS_ID_NOT_MAPPED)
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return;
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MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
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}
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static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
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struct mvs_device *dev)
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{
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if (dev->taskfileset != MVS_ID_NOT_MAPPED)
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return 0;
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return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
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}
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void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
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{
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u32 no;
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for_each_phy(phy_mask, phy_mask, no) {
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if (!(phy_mask & 1))
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continue;
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MVS_CHIP_DISP->phy_reset(mvi, no, hard);
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}
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}
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int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
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void *funcdata)
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{
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int rc = 0, phy_id = sas_phy->id;
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u32 tmp, i = 0, hi;
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struct sas_ha_struct *sha = sas_phy->ha;
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struct mvs_info *mvi = NULL;
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while (sha->sas_phy[i]) {
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if (sha->sas_phy[i] == sas_phy)
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break;
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i++;
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}
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hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
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mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
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switch (func) {
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case PHY_FUNC_SET_LINK_RATE:
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MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
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break;
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case PHY_FUNC_HARD_RESET:
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tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
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if (tmp & PHY_RST_HARD)
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break;
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MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
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break;
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case PHY_FUNC_LINK_RESET:
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MVS_CHIP_DISP->phy_enable(mvi, phy_id);
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MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
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break;
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case PHY_FUNC_DISABLE:
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MVS_CHIP_DISP->phy_disable(mvi, phy_id);
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break;
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case PHY_FUNC_RELEASE_SPINUP_HOLD:
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default:
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rc = -ENOSYS;
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}
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msleep(200);
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return rc;
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}
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void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo,
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u32 off_hi, u64 sas_addr)
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{
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u32 lo = (u32)sas_addr;
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u32 hi = (u32)(sas_addr>>32);
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MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
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MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
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MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
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MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
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}
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static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
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{
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struct mvs_phy *phy = &mvi->phy[i];
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struct asd_sas_phy *sas_phy = &phy->sas_phy;
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struct sas_ha_struct *sas_ha;
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if (!phy->phy_attached)
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return;
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if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
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&& phy->phy_type & PORT_TYPE_SAS) {
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return;
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}
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sas_ha = mvi->sas;
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sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
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if (sas_phy->phy) {
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struct sas_phy *sphy = sas_phy->phy;
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sphy->negotiated_linkrate = sas_phy->linkrate;
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sphy->minimum_linkrate = phy->minimum_linkrate;
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sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
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sphy->maximum_linkrate = phy->maximum_linkrate;
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sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
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}
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if (phy->phy_type & PORT_TYPE_SAS) {
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struct sas_identify_frame *id;
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id = (struct sas_identify_frame *)phy->frame_rcvd;
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id->dev_type = phy->identify.device_type;
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id->initiator_bits = SAS_PROTOCOL_ALL;
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id->target_bits = phy->identify.target_port_protocols;
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/* direct attached SAS device */
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if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
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MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
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MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00);
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}
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} else if (phy->phy_type & PORT_TYPE_SATA) {
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/*Nothing*/
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}
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mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
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sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
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mvi->sas->notify_port_event(sas_phy,
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PORTE_BYTES_DMAED);
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}
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void mvs_scan_start(struct Scsi_Host *shost)
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{
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int i, j;
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unsigned short core_nr;
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struct mvs_info *mvi;
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struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
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struct mvs_prv_info *mvs_prv = sha->lldd_ha;
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core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
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for (j = 0; j < core_nr; j++) {
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mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
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for (i = 0; i < mvi->chip->n_phy; ++i)
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mvs_bytes_dmaed(mvi, i);
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}
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mvs_prv->scan_finished = 1;
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}
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int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
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{
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struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
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struct mvs_prv_info *mvs_prv = sha->lldd_ha;
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if (mvs_prv->scan_finished == 0)
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return 0;
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sas_drain_work(sha);
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return 1;
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}
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static int mvs_task_prep_smp(struct mvs_info *mvi,
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struct mvs_task_exec_info *tei)
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{
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int elem, rc, i;
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struct sas_ha_struct *sha = mvi->sas;
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struct sas_task *task = tei->task;
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struct mvs_cmd_hdr *hdr = tei->hdr;
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struct domain_device *dev = task->dev;
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struct asd_sas_port *sas_port = dev->port;
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struct sas_phy *sphy = dev->phy;
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struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
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struct scatterlist *sg_req, *sg_resp;
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u32 req_len, resp_len, tag = tei->tag;
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void *buf_tmp;
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u8 *buf_oaf;
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dma_addr_t buf_tmp_dma;
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void *buf_prd;
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struct mvs_slot_info *slot = &mvi->slot_info[tag];
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u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
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/*
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* DMA-map SMP request, response buffers
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*/
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sg_req = &task->smp_task.smp_req;
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elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
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if (!elem)
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return -ENOMEM;
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req_len = sg_dma_len(sg_req);
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sg_resp = &task->smp_task.smp_resp;
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elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
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if (!elem) {
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rc = -ENOMEM;
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goto err_out;
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}
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resp_len = SB_RFB_MAX;
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/* must be in dwords */
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if ((req_len & 0x3) || (resp_len & 0x3)) {
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rc = -EINVAL;
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goto err_out_2;
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}
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/*
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* arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
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*/
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/* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
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buf_tmp = slot->buf;
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buf_tmp_dma = slot->buf_dma;
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hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
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/* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
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buf_oaf = buf_tmp;
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hdr->open_frame = cpu_to_le64(buf_tmp_dma);
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buf_tmp += MVS_OAF_SZ;
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buf_tmp_dma += MVS_OAF_SZ;
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/* region 3: PRD table *********************************** */
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buf_prd = buf_tmp;
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if (tei->n_elem)
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hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
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else
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hdr->prd_tbl = 0;
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i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
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buf_tmp += i;
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buf_tmp_dma += i;
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/* region 4: status buffer (larger the PRD, smaller this buf) ****** */
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slot->response = buf_tmp;
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hdr->status_buf = cpu_to_le64(buf_tmp_dma);
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if (mvi->flags & MVF_FLAG_SOC)
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hdr->reserved[0] = 0;
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/*
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* Fill in TX ring and command slot header
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*/
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slot->tx = mvi->tx_prod;
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mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
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TXQ_MODE_I | tag |
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(MVS_PHY_ID << TXQ_PHY_SHIFT));
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hdr->flags |= flags;
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hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
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hdr->tags = cpu_to_le32(tag);
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hdr->data_len = 0;
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|
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/* generate open address frame hdr (first 12 bytes) */
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/* initiator, SMP, ftype 1h */
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buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
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buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
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*(u16 *)(buf_oaf + 2) = 0xFFFF; /* SAS SPEC */
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memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
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|
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/* fill in PRD (scatter/gather) table, if any */
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MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
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return 0;
|
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err_out_2:
|
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dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
|
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PCI_DMA_FROMDEVICE);
|
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err_out:
|
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dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
|
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PCI_DMA_TODEVICE);
|
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return rc;
|
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}
|
|
|
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static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
|
|
{
|
|
struct ata_queued_cmd *qc = task->uldd_task;
|
|
|
|
if (qc) {
|
|
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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|
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return 0;
|
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}
|
|
|
|
static int mvs_task_prep_ata(struct mvs_info *mvi,
|
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struct mvs_task_exec_info *tei)
|
|
{
|
|
struct sas_task *task = tei->task;
|
|
struct domain_device *dev = task->dev;
|
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struct mvs_device *mvi_dev = dev->lldd_dev;
|
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struct mvs_cmd_hdr *hdr = tei->hdr;
|
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struct asd_sas_port *sas_port = dev->port;
|
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struct mvs_slot_info *slot;
|
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void *buf_prd;
|
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u32 tag = tei->tag, hdr_tag;
|
|
u32 flags, del_q;
|
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void *buf_tmp;
|
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u8 *buf_cmd, *buf_oaf;
|
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dma_addr_t buf_tmp_dma;
|
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u32 i, req_len, resp_len;
|
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const u32 max_resp_len = SB_RFB_MAX;
|
|
|
|
if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
|
|
mv_dprintk("Have not enough regiset for dev %d.\n",
|
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mvi_dev->device_id);
|
|
return -EBUSY;
|
|
}
|
|
slot = &mvi->slot_info[tag];
|
|
slot->tx = mvi->tx_prod;
|
|
del_q = TXQ_MODE_I | tag |
|
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(TXQ_CMD_STP << TXQ_CMD_SHIFT) |
|
|
((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
|
|
(mvi_dev->taskfileset << TXQ_SRS_SHIFT);
|
|
mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
|
|
|
|
if (task->data_dir == DMA_FROM_DEVICE)
|
|
flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
|
|
else
|
|
flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
|
|
|
|
if (task->ata_task.use_ncq)
|
|
flags |= MCH_FPDMA;
|
|
if (dev->sata_dev.class == ATA_DEV_ATAPI) {
|
|
if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
|
|
flags |= MCH_ATAPI;
|
|
}
|
|
|
|
hdr->flags = cpu_to_le32(flags);
|
|
|
|
if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
|
|
task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
|
|
else
|
|
hdr_tag = tag;
|
|
|
|
hdr->tags = cpu_to_le32(hdr_tag);
|
|
|
|
hdr->data_len = cpu_to_le32(task->total_xfer_len);
|
|
|
|
/*
|
|
* arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
|
|
*/
|
|
|
|
/* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
|
|
buf_cmd = buf_tmp = slot->buf;
|
|
buf_tmp_dma = slot->buf_dma;
|
|
|
|
hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
|
|
|
|
buf_tmp += MVS_ATA_CMD_SZ;
|
|
buf_tmp_dma += MVS_ATA_CMD_SZ;
|
|
|
|
/* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
|
|
/* used for STP. unused for SATA? */
|
|
buf_oaf = buf_tmp;
|
|
hdr->open_frame = cpu_to_le64(buf_tmp_dma);
|
|
|
|
buf_tmp += MVS_OAF_SZ;
|
|
buf_tmp_dma += MVS_OAF_SZ;
|
|
|
|
/* region 3: PRD table ********************************************* */
|
|
buf_prd = buf_tmp;
|
|
|
|
if (tei->n_elem)
|
|
hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
|
|
else
|
|
hdr->prd_tbl = 0;
|
|
i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
|
|
|
|
buf_tmp += i;
|
|
buf_tmp_dma += i;
|
|
|
|
/* region 4: status buffer (larger the PRD, smaller this buf) ****** */
|
|
slot->response = buf_tmp;
|
|
hdr->status_buf = cpu_to_le64(buf_tmp_dma);
|
|
if (mvi->flags & MVF_FLAG_SOC)
|
|
hdr->reserved[0] = 0;
|
|
|
|
req_len = sizeof(struct host_to_dev_fis);
|
|
resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
|
|
sizeof(struct mvs_err_info) - i;
|
|
|
|
/* request, response lengths */
|
|
resp_len = min(resp_len, max_resp_len);
|
|
hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
|
|
|
|
if (likely(!task->ata_task.device_control_reg_update))
|
|
task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
|
|
/* fill in command FIS and ATAPI CDB */
|
|
memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
|
|
if (dev->sata_dev.class == ATA_DEV_ATAPI)
|
|
memcpy(buf_cmd + STP_ATAPI_CMD,
|
|
task->ata_task.atapi_packet, 16);
|
|
|
|
/* generate open address frame hdr (first 12 bytes) */
|
|
/* initiator, STP, ftype 1h */
|
|
buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
|
|
buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
|
|
*(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
|
|
memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
|
|
|
|
/* fill in PRD (scatter/gather) table, if any */
|
|
MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
|
|
|
|
if (task->data_dir == DMA_FROM_DEVICE)
|
|
MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
|
|
TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mvs_task_prep_ssp(struct mvs_info *mvi,
|
|
struct mvs_task_exec_info *tei, int is_tmf,
|
|
struct mvs_tmf_task *tmf)
|
|
{
|
|
struct sas_task *task = tei->task;
|
|
struct mvs_cmd_hdr *hdr = tei->hdr;
|
|
struct mvs_port *port = tei->port;
|
|
struct domain_device *dev = task->dev;
|
|
struct mvs_device *mvi_dev = dev->lldd_dev;
|
|
struct asd_sas_port *sas_port = dev->port;
|
|
struct mvs_slot_info *slot;
|
|
void *buf_prd;
|
|
struct ssp_frame_hdr *ssp_hdr;
|
|
void *buf_tmp;
|
|
u8 *buf_cmd, *buf_oaf, fburst = 0;
|
|
dma_addr_t buf_tmp_dma;
|
|
u32 flags;
|
|
u32 resp_len, req_len, i, tag = tei->tag;
|
|
const u32 max_resp_len = SB_RFB_MAX;
|
|
u32 phy_mask;
|
|
|
|
slot = &mvi->slot_info[tag];
|
|
|
|
phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
|
|
sas_port->phy_mask) & TXQ_PHY_MASK;
|
|
|
|
slot->tx = mvi->tx_prod;
|
|
mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
|
|
(TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
|
|
(phy_mask << TXQ_PHY_SHIFT));
|
|
|
|
flags = MCH_RETRY;
|
|
if (task->ssp_task.enable_first_burst) {
|
|
flags |= MCH_FBURST;
|
|
fburst = (1 << 7);
|
|
}
|
|
if (is_tmf)
|
|
flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
|
|
else
|
|
flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
|
|
|
|
hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
|
|
hdr->tags = cpu_to_le32(tag);
|
|
hdr->data_len = cpu_to_le32(task->total_xfer_len);
|
|
|
|
/*
|
|
* arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
|
|
*/
|
|
|
|
/* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
|
|
buf_cmd = buf_tmp = slot->buf;
|
|
buf_tmp_dma = slot->buf_dma;
|
|
|
|
hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
|
|
|
|
buf_tmp += MVS_SSP_CMD_SZ;
|
|
buf_tmp_dma += MVS_SSP_CMD_SZ;
|
|
|
|
/* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
|
|
buf_oaf = buf_tmp;
|
|
hdr->open_frame = cpu_to_le64(buf_tmp_dma);
|
|
|
|
buf_tmp += MVS_OAF_SZ;
|
|
buf_tmp_dma += MVS_OAF_SZ;
|
|
|
|
/* region 3: PRD table ********************************************* */
|
|
buf_prd = buf_tmp;
|
|
if (tei->n_elem)
|
|
hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
|
|
else
|
|
hdr->prd_tbl = 0;
|
|
|
|
i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
|
|
buf_tmp += i;
|
|
buf_tmp_dma += i;
|
|
|
|
/* region 4: status buffer (larger the PRD, smaller this buf) ****** */
|
|
slot->response = buf_tmp;
|
|
hdr->status_buf = cpu_to_le64(buf_tmp_dma);
|
|
if (mvi->flags & MVF_FLAG_SOC)
|
|
hdr->reserved[0] = 0;
|
|
|
|
resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
|
|
sizeof(struct mvs_err_info) - i;
|
|
resp_len = min(resp_len, max_resp_len);
|
|
|
|
req_len = sizeof(struct ssp_frame_hdr) + 28;
|
|
|
|
/* request, response lengths */
|
|
hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
|
|
|
|
/* generate open address frame hdr (first 12 bytes) */
|
|
/* initiator, SSP, ftype 1h */
|
|
buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
|
|
buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
|
|
*(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
|
|
memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
|
|
|
|
/* fill in SSP frame header (Command Table.SSP frame header) */
|
|
ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
|
|
|
|
if (is_tmf)
|
|
ssp_hdr->frame_type = SSP_TASK;
|
|
else
|
|
ssp_hdr->frame_type = SSP_COMMAND;
|
|
|
|
memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
|
|
HASHED_SAS_ADDR_SIZE);
|
|
memcpy(ssp_hdr->hashed_src_addr,
|
|
dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
|
|
ssp_hdr->tag = cpu_to_be16(tag);
|
|
|
|
/* fill in IU for TASK and Command Frame */
|
|
buf_cmd += sizeof(*ssp_hdr);
|
|
memcpy(buf_cmd, &task->ssp_task.LUN, 8);
|
|
|
|
if (ssp_hdr->frame_type != SSP_TASK) {
|
|
buf_cmd[9] = fburst | task->ssp_task.task_attr |
|
|
(task->ssp_task.task_prio << 3);
|
|
memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
|
|
task->ssp_task.cmd->cmd_len);
|
|
} else{
|
|
buf_cmd[10] = tmf->tmf;
|
|
switch (tmf->tmf) {
|
|
case TMF_ABORT_TASK:
|
|
case TMF_QUERY_TASK:
|
|
buf_cmd[12] =
|
|
(tmf->tag_of_task_to_be_managed >> 8) & 0xff;
|
|
buf_cmd[13] =
|
|
tmf->tag_of_task_to_be_managed & 0xff;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
/* fill in PRD (scatter/gather) table, if any */
|
|
MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
|
|
return 0;
|
|
}
|
|
|
|
#define DEV_IS_GONE(mvi_dev) ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
|
|
static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
|
|
struct mvs_tmf_task *tmf, int *pass)
|
|
{
|
|
struct domain_device *dev = task->dev;
|
|
struct mvs_device *mvi_dev = dev->lldd_dev;
|
|
struct mvs_task_exec_info tei;
|
|
struct mvs_slot_info *slot;
|
|
u32 tag = 0xdeadbeef, n_elem = 0;
|
|
int rc = 0;
|
|
|
|
if (!dev->port) {
|
|
struct task_status_struct *tsm = &task->task_status;
|
|
|
|
tsm->resp = SAS_TASK_UNDELIVERED;
|
|
tsm->stat = SAS_PHY_DOWN;
|
|
/*
|
|
* libsas will use dev->port, should
|
|
* not call task_done for sata
|
|
*/
|
|
if (dev->dev_type != SAS_SATA_DEV)
|
|
task->task_done(task);
|
|
return rc;
|
|
}
|
|
|
|
if (DEV_IS_GONE(mvi_dev)) {
|
|
if (mvi_dev)
|
|
mv_dprintk("device %d not ready.\n",
|
|
mvi_dev->device_id);
|
|
else
|
|
mv_dprintk("device %016llx not ready.\n",
|
|
SAS_ADDR(dev->sas_addr));
|
|
|
|
rc = SAS_PHY_DOWN;
|
|
return rc;
|
|
}
|
|
tei.port = dev->port->lldd_port;
|
|
if (tei.port && !tei.port->port_attached && !tmf) {
|
|
if (sas_protocol_ata(task->task_proto)) {
|
|
struct task_status_struct *ts = &task->task_status;
|
|
mv_dprintk("SATA/STP port %d does not attach"
|
|
"device.\n", dev->port->id);
|
|
ts->resp = SAS_TASK_COMPLETE;
|
|
ts->stat = SAS_PHY_DOWN;
|
|
|
|
task->task_done(task);
|
|
|
|
} else {
|
|
struct task_status_struct *ts = &task->task_status;
|
|
mv_dprintk("SAS port %d does not attach"
|
|
"device.\n", dev->port->id);
|
|
ts->resp = SAS_TASK_UNDELIVERED;
|
|
ts->stat = SAS_PHY_DOWN;
|
|
task->task_done(task);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
if (!sas_protocol_ata(task->task_proto)) {
|
|
if (task->num_scatter) {
|
|
n_elem = dma_map_sg(mvi->dev,
|
|
task->scatter,
|
|
task->num_scatter,
|
|
task->data_dir);
|
|
if (!n_elem) {
|
|
rc = -ENOMEM;
|
|
goto prep_out;
|
|
}
|
|
}
|
|
} else {
|
|
n_elem = task->num_scatter;
|
|
}
|
|
|
|
rc = mvs_tag_alloc(mvi, &tag);
|
|
if (rc)
|
|
goto err_out;
|
|
|
|
slot = &mvi->slot_info[tag];
|
|
|
|
task->lldd_task = NULL;
|
|
slot->n_elem = n_elem;
|
|
slot->slot_tag = tag;
|
|
|
|
slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
|
|
if (!slot->buf)
|
|
goto err_out_tag;
|
|
memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
|
|
|
|
tei.task = task;
|
|
tei.hdr = &mvi->slot[tag];
|
|
tei.tag = tag;
|
|
tei.n_elem = n_elem;
|
|
switch (task->task_proto) {
|
|
case SAS_PROTOCOL_SMP:
|
|
rc = mvs_task_prep_smp(mvi, &tei);
|
|
break;
|
|
case SAS_PROTOCOL_SSP:
|
|
rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
|
|
break;
|
|
case SAS_PROTOCOL_SATA:
|
|
case SAS_PROTOCOL_STP:
|
|
case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
|
|
rc = mvs_task_prep_ata(mvi, &tei);
|
|
break;
|
|
default:
|
|
dev_printk(KERN_ERR, mvi->dev,
|
|
"unknown sas_task proto: 0x%x\n",
|
|
task->task_proto);
|
|
rc = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (rc) {
|
|
mv_dprintk("rc is %x\n", rc);
|
|
goto err_out_slot_buf;
|
|
}
|
|
slot->task = task;
|
|
slot->port = tei.port;
|
|
task->lldd_task = slot;
|
|
list_add_tail(&slot->entry, &tei.port->list);
|
|
spin_lock(&task->task_state_lock);
|
|
task->task_state_flags |= SAS_TASK_AT_INITIATOR;
|
|
spin_unlock(&task->task_state_lock);
|
|
|
|
mvi_dev->running_req++;
|
|
++(*pass);
|
|
mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
|
|
|
|
return rc;
|
|
|
|
err_out_slot_buf:
|
|
pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
|
|
err_out_tag:
|
|
mvs_tag_free(mvi, tag);
|
|
err_out:
|
|
|
|
dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
|
|
if (!sas_protocol_ata(task->task_proto))
|
|
if (n_elem)
|
|
dma_unmap_sg(mvi->dev, task->scatter, n_elem,
|
|
task->data_dir);
|
|
prep_out:
|
|
return rc;
|
|
}
|
|
|
|
static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
|
|
struct completion *completion, int is_tmf,
|
|
struct mvs_tmf_task *tmf)
|
|
{
|
|
struct mvs_info *mvi = NULL;
|
|
u32 rc = 0;
|
|
u32 pass = 0;
|
|
unsigned long flags = 0;
|
|
|
|
mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
|
|
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
|
|
if (rc)
|
|
dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
|
|
|
|
if (likely(pass))
|
|
MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
|
|
(MVS_CHIP_SLOT_SZ - 1));
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
|
|
{
|
|
return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
|
|
}
|
|
|
|
static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
|
|
{
|
|
u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
|
|
mvs_tag_clear(mvi, slot_idx);
|
|
}
|
|
|
|
static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
|
|
struct mvs_slot_info *slot, u32 slot_idx)
|
|
{
|
|
if (!slot)
|
|
return;
|
|
if (!slot->task)
|
|
return;
|
|
if (!sas_protocol_ata(task->task_proto))
|
|
if (slot->n_elem)
|
|
dma_unmap_sg(mvi->dev, task->scatter,
|
|
slot->n_elem, task->data_dir);
|
|
|
|
switch (task->task_proto) {
|
|
case SAS_PROTOCOL_SMP:
|
|
dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
|
|
PCI_DMA_FROMDEVICE);
|
|
dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
|
|
PCI_DMA_TODEVICE);
|
|
break;
|
|
|
|
case SAS_PROTOCOL_SATA:
|
|
case SAS_PROTOCOL_STP:
|
|
case SAS_PROTOCOL_SSP:
|
|
default:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
|
|
if (slot->buf) {
|
|
pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
|
|
slot->buf = NULL;
|
|
}
|
|
list_del_init(&slot->entry);
|
|
task->lldd_task = NULL;
|
|
slot->task = NULL;
|
|
slot->port = NULL;
|
|
slot->slot_tag = 0xFFFFFFFF;
|
|
mvs_slot_free(mvi, slot_idx);
|
|
}
|
|
|
|
static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
|
|
{
|
|
struct mvs_phy *phy = &mvi->phy[phy_no];
|
|
struct mvs_port *port = phy->port;
|
|
int j, no;
|
|
|
|
for_each_phy(port->wide_port_phymap, j, no) {
|
|
if (j & 1) {
|
|
MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
|
|
PHYR_WIDE_PORT);
|
|
MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
|
|
port->wide_port_phymap);
|
|
} else {
|
|
MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
|
|
PHYR_WIDE_PORT);
|
|
MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
|
|
0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
|
|
{
|
|
u32 tmp;
|
|
struct mvs_phy *phy = &mvi->phy[i];
|
|
struct mvs_port *port = phy->port;
|
|
|
|
tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
|
|
if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
|
|
if (!port)
|
|
phy->phy_attached = 1;
|
|
return tmp;
|
|
}
|
|
|
|
if (port) {
|
|
if (phy->phy_type & PORT_TYPE_SAS) {
|
|
port->wide_port_phymap &= ~(1U << i);
|
|
if (!port->wide_port_phymap)
|
|
port->port_attached = 0;
|
|
mvs_update_wideport(mvi, i);
|
|
} else if (phy->phy_type & PORT_TYPE_SATA)
|
|
port->port_attached = 0;
|
|
phy->port = NULL;
|
|
phy->phy_attached = 0;
|
|
phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
|
|
{
|
|
u32 *s = (u32 *) buf;
|
|
|
|
if (!s)
|
|
return NULL;
|
|
|
|
MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
|
|
s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
|
|
|
|
MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
|
|
s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
|
|
|
|
MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
|
|
s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
|
|
|
|
MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
|
|
s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
|
|
|
|
if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
|
|
s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
|
|
|
|
return s;
|
|
}
|
|
|
|
static u32 mvs_is_sig_fis_received(u32 irq_status)
|
|
{
|
|
return irq_status & PHYEV_SIG_FIS;
|
|
}
|
|
|
|
static void mvs_sig_remove_timer(struct mvs_phy *phy)
|
|
{
|
|
if (phy->timer.function)
|
|
del_timer(&phy->timer);
|
|
phy->timer.function = NULL;
|
|
}
|
|
|
|
void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
|
|
{
|
|
struct mvs_phy *phy = &mvi->phy[i];
|
|
struct sas_identify_frame *id;
|
|
|
|
id = (struct sas_identify_frame *)phy->frame_rcvd;
|
|
|
|
if (get_st) {
|
|
phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
|
|
phy->phy_status = mvs_is_phy_ready(mvi, i);
|
|
}
|
|
|
|
if (phy->phy_status) {
|
|
int oob_done = 0;
|
|
struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
|
|
|
|
oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
|
|
|
|
MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
|
|
if (phy->phy_type & PORT_TYPE_SATA) {
|
|
phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
|
|
if (mvs_is_sig_fis_received(phy->irq_status)) {
|
|
mvs_sig_remove_timer(phy);
|
|
phy->phy_attached = 1;
|
|
phy->att_dev_sas_addr =
|
|
i + mvi->id * mvi->chip->n_phy;
|
|
if (oob_done)
|
|
sas_phy->oob_mode = SATA_OOB_MODE;
|
|
phy->frame_rcvd_size =
|
|
sizeof(struct dev_to_host_fis);
|
|
mvs_get_d2h_reg(mvi, i, id);
|
|
} else {
|
|
u32 tmp;
|
|
dev_printk(KERN_DEBUG, mvi->dev,
|
|
"Phy%d : No sig fis\n", i);
|
|
tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
|
|
MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
|
|
tmp | PHYEV_SIG_FIS);
|
|
phy->phy_attached = 0;
|
|
phy->phy_type &= ~PORT_TYPE_SATA;
|
|
goto out_done;
|
|
}
|
|
} else if (phy->phy_type & PORT_TYPE_SAS
|
|
|| phy->att_dev_info & PORT_SSP_INIT_MASK) {
|
|
phy->phy_attached = 1;
|
|
phy->identify.device_type =
|
|
phy->att_dev_info & PORT_DEV_TYPE_MASK;
|
|
|
|
if (phy->identify.device_type == SAS_END_DEVICE)
|
|
phy->identify.target_port_protocols =
|
|
SAS_PROTOCOL_SSP;
|
|
else if (phy->identify.device_type != SAS_PHY_UNUSED)
|
|
phy->identify.target_port_protocols =
|
|
SAS_PROTOCOL_SMP;
|
|
if (oob_done)
|
|
sas_phy->oob_mode = SAS_OOB_MODE;
|
|
phy->frame_rcvd_size =
|
|
sizeof(struct sas_identify_frame);
|
|
}
|
|
memcpy(sas_phy->attached_sas_addr,
|
|
&phy->att_dev_sas_addr, SAS_ADDR_SIZE);
|
|
|
|
if (MVS_CHIP_DISP->phy_work_around)
|
|
MVS_CHIP_DISP->phy_work_around(mvi, i);
|
|
}
|
|
mv_dprintk("phy %d attach dev info is %x\n",
|
|
i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
|
|
mv_dprintk("phy %d attach sas addr is %llx\n",
|
|
i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
|
|
out_done:
|
|
if (get_st)
|
|
MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
|
|
}
|
|
|
|
static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
|
|
{
|
|
struct sas_ha_struct *sas_ha = sas_phy->ha;
|
|
struct mvs_info *mvi = NULL; int i = 0, hi;
|
|
struct mvs_phy *phy = sas_phy->lldd_phy;
|
|
struct asd_sas_port *sas_port = sas_phy->port;
|
|
struct mvs_port *port;
|
|
unsigned long flags = 0;
|
|
if (!sas_port)
|
|
return;
|
|
|
|
while (sas_ha->sas_phy[i]) {
|
|
if (sas_ha->sas_phy[i] == sas_phy)
|
|
break;
|
|
i++;
|
|
}
|
|
hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
|
|
mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
|
|
if (i >= mvi->chip->n_phy)
|
|
port = &mvi->port[i - mvi->chip->n_phy];
|
|
else
|
|
port = &mvi->port[i];
|
|
if (lock)
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
port->port_attached = 1;
|
|
phy->port = port;
|
|
sas_port->lldd_port = port;
|
|
if (phy->phy_type & PORT_TYPE_SAS) {
|
|
port->wide_port_phymap = sas_port->phy_mask;
|
|
mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
|
|
mvs_update_wideport(mvi, sas_phy->id);
|
|
|
|
/* direct attached SAS device */
|
|
if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
|
|
MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
|
|
MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
|
|
}
|
|
}
|
|
if (lock)
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
}
|
|
|
|
static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
|
|
{
|
|
struct domain_device *dev;
|
|
struct mvs_phy *phy = sas_phy->lldd_phy;
|
|
struct mvs_info *mvi = phy->mvi;
|
|
struct asd_sas_port *port = sas_phy->port;
|
|
int phy_no = 0;
|
|
|
|
while (phy != &mvi->phy[phy_no]) {
|
|
phy_no++;
|
|
if (phy_no >= MVS_MAX_PHYS)
|
|
return;
|
|
}
|
|
list_for_each_entry(dev, &port->dev_list, dev_list_node)
|
|
mvs_do_release_task(phy->mvi, phy_no, dev);
|
|
|
|
}
|
|
|
|
|
|
void mvs_port_formed(struct asd_sas_phy *sas_phy)
|
|
{
|
|
mvs_port_notify_formed(sas_phy, 1);
|
|
}
|
|
|
|
void mvs_port_deformed(struct asd_sas_phy *sas_phy)
|
|
{
|
|
mvs_port_notify_deformed(sas_phy, 1);
|
|
}
|
|
|
|
struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
|
|
{
|
|
u32 dev;
|
|
for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
|
|
if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
|
|
mvi->devices[dev].device_id = dev;
|
|
return &mvi->devices[dev];
|
|
}
|
|
}
|
|
|
|
if (dev == MVS_MAX_DEVICES)
|
|
mv_printk("max support %d devices, ignore ..\n",
|
|
MVS_MAX_DEVICES);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void mvs_free_dev(struct mvs_device *mvi_dev)
|
|
{
|
|
u32 id = mvi_dev->device_id;
|
|
memset(mvi_dev, 0, sizeof(*mvi_dev));
|
|
mvi_dev->device_id = id;
|
|
mvi_dev->dev_type = SAS_PHY_UNUSED;
|
|
mvi_dev->dev_status = MVS_DEV_NORMAL;
|
|
mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
|
|
}
|
|
|
|
int mvs_dev_found_notify(struct domain_device *dev, int lock)
|
|
{
|
|
unsigned long flags = 0;
|
|
int res = 0;
|
|
struct mvs_info *mvi = NULL;
|
|
struct domain_device *parent_dev = dev->parent;
|
|
struct mvs_device *mvi_device;
|
|
|
|
mvi = mvs_find_dev_mvi(dev);
|
|
|
|
if (lock)
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
|
|
mvi_device = mvs_alloc_dev(mvi);
|
|
if (!mvi_device) {
|
|
res = -1;
|
|
goto found_out;
|
|
}
|
|
dev->lldd_dev = mvi_device;
|
|
mvi_device->dev_status = MVS_DEV_NORMAL;
|
|
mvi_device->dev_type = dev->dev_type;
|
|
mvi_device->mvi_info = mvi;
|
|
mvi_device->sas_device = dev;
|
|
if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
|
|
int phy_id;
|
|
u8 phy_num = parent_dev->ex_dev.num_phys;
|
|
struct ex_phy *phy;
|
|
for (phy_id = 0; phy_id < phy_num; phy_id++) {
|
|
phy = &parent_dev->ex_dev.ex_phy[phy_id];
|
|
if (SAS_ADDR(phy->attached_sas_addr) ==
|
|
SAS_ADDR(dev->sas_addr)) {
|
|
mvi_device->attached_phy = phy_id;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (phy_id == phy_num) {
|
|
mv_printk("Error: no attached dev:%016llx"
|
|
"at ex:%016llx.\n",
|
|
SAS_ADDR(dev->sas_addr),
|
|
SAS_ADDR(parent_dev->sas_addr));
|
|
res = -1;
|
|
}
|
|
}
|
|
|
|
found_out:
|
|
if (lock)
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
return res;
|
|
}
|
|
|
|
int mvs_dev_found(struct domain_device *dev)
|
|
{
|
|
return mvs_dev_found_notify(dev, 1);
|
|
}
|
|
|
|
void mvs_dev_gone_notify(struct domain_device *dev)
|
|
{
|
|
unsigned long flags = 0;
|
|
struct mvs_device *mvi_dev = dev->lldd_dev;
|
|
struct mvs_info *mvi;
|
|
|
|
if (!mvi_dev) {
|
|
mv_dprintk("found dev has gone.\n");
|
|
return;
|
|
}
|
|
|
|
mvi = mvi_dev->mvi_info;
|
|
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
|
|
mv_dprintk("found dev[%d:%x] is gone.\n",
|
|
mvi_dev->device_id, mvi_dev->dev_type);
|
|
mvs_release_task(mvi, dev);
|
|
mvs_free_reg_set(mvi, mvi_dev);
|
|
mvs_free_dev(mvi_dev);
|
|
|
|
dev->lldd_dev = NULL;
|
|
mvi_dev->sas_device = NULL;
|
|
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
}
|
|
|
|
|
|
void mvs_dev_gone(struct domain_device *dev)
|
|
{
|
|
mvs_dev_gone_notify(dev);
|
|
}
|
|
|
|
static void mvs_task_done(struct sas_task *task)
|
|
{
|
|
if (!del_timer(&task->slow_task->timer))
|
|
return;
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
|
|
static void mvs_tmf_timedout(unsigned long data)
|
|
{
|
|
struct sas_task *task = (struct sas_task *)data;
|
|
|
|
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
|
|
complete(&task->slow_task->completion);
|
|
}
|
|
|
|
#define MVS_TASK_TIMEOUT 20
|
|
static int mvs_exec_internal_tmf_task(struct domain_device *dev,
|
|
void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
|
|
{
|
|
int res, retry;
|
|
struct sas_task *task = NULL;
|
|
|
|
for (retry = 0; retry < 3; retry++) {
|
|
task = sas_alloc_slow_task(GFP_KERNEL);
|
|
if (!task)
|
|
return -ENOMEM;
|
|
|
|
task->dev = dev;
|
|
task->task_proto = dev->tproto;
|
|
|
|
memcpy(&task->ssp_task, parameter, para_len);
|
|
task->task_done = mvs_task_done;
|
|
|
|
task->slow_task->timer.data = (unsigned long) task;
|
|
task->slow_task->timer.function = mvs_tmf_timedout;
|
|
task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
|
|
add_timer(&task->slow_task->timer);
|
|
|
|
res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
|
|
|
|
if (res) {
|
|
del_timer(&task->slow_task->timer);
|
|
mv_printk("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)) {
|
|
mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
|
|
goto ex_err;
|
|
}
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == SAM_STAT_GOOD) {
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
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 */
|
|
res = task->task_status.residual;
|
|
break;
|
|
}
|
|
|
|
if (task->task_status.resp == SAS_TASK_COMPLETE &&
|
|
task->task_status.stat == SAS_DATA_OVERRUN) {
|
|
mv_dprintk("blocked task error.\n");
|
|
res = -EMSGSIZE;
|
|
break;
|
|
} else {
|
|
mv_dprintk(" task to dev %016llx response: 0x%x "
|
|
"status 0x%x\n",
|
|
SAS_ADDR(dev->sas_addr),
|
|
task->task_status.resp,
|
|
task->task_status.stat);
|
|
sas_free_task(task);
|
|
task = NULL;
|
|
|
|
}
|
|
}
|
|
ex_err:
|
|
BUG_ON(retry == 3 && task != NULL);
|
|
sas_free_task(task);
|
|
return res;
|
|
}
|
|
|
|
static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
|
|
u8 *lun, struct mvs_tmf_task *tmf)
|
|
{
|
|
struct sas_ssp_task ssp_task;
|
|
if (!(dev->tproto & SAS_PROTOCOL_SSP))
|
|
return TMF_RESP_FUNC_ESUPP;
|
|
|
|
memcpy(ssp_task.LUN, lun, 8);
|
|
|
|
return mvs_exec_internal_tmf_task(dev, &ssp_task,
|
|
sizeof(ssp_task), tmf);
|
|
}
|
|
|
|
|
|
/* Standard mandates link reset for ATA (type 0)
|
|
and hard reset for SSP (type 1) , only for RECOVERY */
|
|
static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
|
|
{
|
|
int rc;
|
|
struct sas_phy *phy = sas_get_local_phy(dev);
|
|
int reset_type = (dev->dev_type == SAS_SATA_DEV ||
|
|
(dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
|
|
rc = sas_phy_reset(phy, reset_type);
|
|
sas_put_local_phy(phy);
|
|
msleep(2000);
|
|
return rc;
|
|
}
|
|
|
|
/* mandatory SAM-3 */
|
|
int mvs_lu_reset(struct domain_device *dev, u8 *lun)
|
|
{
|
|
unsigned long flags;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct mvs_tmf_task tmf_task;
|
|
struct mvs_device * mvi_dev = dev->lldd_dev;
|
|
struct mvs_info *mvi = mvi_dev->mvi_info;
|
|
|
|
tmf_task.tmf = TMF_LU_RESET;
|
|
mvi_dev->dev_status = MVS_DEV_EH;
|
|
rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
|
|
if (rc == TMF_RESP_FUNC_COMPLETE) {
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
mvs_release_task(mvi, dev);
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
}
|
|
/* If failed, fall-through I_T_Nexus reset */
|
|
mv_printk("%s for device[%x]:rc= %d\n", __func__,
|
|
mvi_dev->device_id, rc);
|
|
return rc;
|
|
}
|
|
|
|
int mvs_I_T_nexus_reset(struct domain_device *dev)
|
|
{
|
|
unsigned long flags;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
|
|
struct mvs_info *mvi = mvi_dev->mvi_info;
|
|
|
|
if (mvi_dev->dev_status != MVS_DEV_EH)
|
|
return TMF_RESP_FUNC_COMPLETE;
|
|
else
|
|
mvi_dev->dev_status = MVS_DEV_NORMAL;
|
|
rc = mvs_debug_I_T_nexus_reset(dev);
|
|
mv_printk("%s for device[%x]:rc= %d\n",
|
|
__func__, mvi_dev->device_id, rc);
|
|
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
mvs_release_task(mvi, dev);
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
|
|
return rc;
|
|
}
|
|
/* optional SAM-3 */
|
|
int mvs_query_task(struct sas_task *task)
|
|
{
|
|
u32 tag;
|
|
struct scsi_lun lun;
|
|
struct mvs_tmf_task tmf_task;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
|
|
if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
|
|
struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
|
|
struct domain_device *dev = task->dev;
|
|
struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
|
|
struct mvs_info *mvi = mvi_dev->mvi_info;
|
|
|
|
int_to_scsilun(cmnd->device->lun, &lun);
|
|
rc = mvs_find_tag(mvi, task, &tag);
|
|
if (rc == 0) {
|
|
rc = TMF_RESP_FUNC_FAILED;
|
|
return rc;
|
|
}
|
|
|
|
tmf_task.tmf = TMF_QUERY_TASK;
|
|
tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
|
|
|
|
rc = mvs_debug_issue_ssp_tmf(dev, 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;
|
|
}
|
|
}
|
|
mv_printk("%s:rc= %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
/* mandatory SAM-3, still need free task/slot info */
|
|
int mvs_abort_task(struct sas_task *task)
|
|
{
|
|
struct scsi_lun lun;
|
|
struct mvs_tmf_task tmf_task;
|
|
struct domain_device *dev = task->dev;
|
|
struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
|
|
struct mvs_info *mvi;
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
unsigned long flags;
|
|
u32 tag;
|
|
|
|
if (!mvi_dev) {
|
|
mv_printk("Device has removed\n");
|
|
return TMF_RESP_FUNC_FAILED;
|
|
}
|
|
|
|
mvi = mvi_dev->mvi_info;
|
|
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
if (task->task_state_flags & SAS_TASK_STATE_DONE) {
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
rc = TMF_RESP_FUNC_COMPLETE;
|
|
goto out;
|
|
}
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
mvi_dev->dev_status = MVS_DEV_EH;
|
|
if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
|
|
struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
|
|
|
|
int_to_scsilun(cmnd->device->lun, &lun);
|
|
rc = mvs_find_tag(mvi, task, &tag);
|
|
if (rc == 0) {
|
|
mv_printk("No such tag in %s\n", __func__);
|
|
rc = TMF_RESP_FUNC_FAILED;
|
|
return rc;
|
|
}
|
|
|
|
tmf_task.tmf = TMF_ABORT_TASK;
|
|
tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
|
|
|
|
rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
|
|
|
|
/* if successful, clear the task and callback forwards.*/
|
|
if (rc == TMF_RESP_FUNC_COMPLETE) {
|
|
u32 slot_no;
|
|
struct mvs_slot_info *slot;
|
|
|
|
if (task->lldd_task) {
|
|
slot = task->lldd_task;
|
|
slot_no = (u32) (slot - mvi->slot_info);
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
mvs_slot_complete(mvi, slot_no, 1);
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
}
|
|
}
|
|
|
|
} else if (task->task_proto & SAS_PROTOCOL_SATA ||
|
|
task->task_proto & SAS_PROTOCOL_STP) {
|
|
if (SAS_SATA_DEV == dev->dev_type) {
|
|
struct mvs_slot_info *slot = task->lldd_task;
|
|
u32 slot_idx = (u32)(slot - mvi->slot_info);
|
|
mv_dprintk("mvs_abort_task() mvi=%p task=%p "
|
|
"slot=%p slot_idx=x%x\n",
|
|
mvi, task, slot, slot_idx);
|
|
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
|
|
mvs_slot_task_free(mvi, task, slot, slot_idx);
|
|
rc = TMF_RESP_FUNC_COMPLETE;
|
|
goto out;
|
|
}
|
|
|
|
}
|
|
out:
|
|
if (rc != TMF_RESP_FUNC_COMPLETE)
|
|
mv_printk("%s:rc= %d\n", __func__, rc);
|
|
return rc;
|
|
}
|
|
|
|
int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
|
|
{
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct mvs_tmf_task tmf_task;
|
|
|
|
tmf_task.tmf = TMF_ABORT_TASK_SET;
|
|
rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int mvs_clear_aca(struct domain_device *dev, u8 *lun)
|
|
{
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct mvs_tmf_task tmf_task;
|
|
|
|
tmf_task.tmf = TMF_CLEAR_ACA;
|
|
rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
|
|
{
|
|
int rc = TMF_RESP_FUNC_FAILED;
|
|
struct mvs_tmf_task tmf_task;
|
|
|
|
tmf_task.tmf = TMF_CLEAR_TASK_SET;
|
|
rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
|
|
u32 slot_idx, int err)
|
|
{
|
|
struct mvs_device *mvi_dev = task->dev->lldd_dev;
|
|
struct task_status_struct *tstat = &task->task_status;
|
|
struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
|
|
int stat = SAM_STAT_GOOD;
|
|
|
|
|
|
resp->frame_len = sizeof(struct dev_to_host_fis);
|
|
memcpy(&resp->ending_fis[0],
|
|
SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
|
|
sizeof(struct dev_to_host_fis));
|
|
tstat->buf_valid_size = sizeof(*resp);
|
|
if (unlikely(err)) {
|
|
if (unlikely(err & CMD_ISS_STPD))
|
|
stat = SAS_OPEN_REJECT;
|
|
else
|
|
stat = SAS_PROTO_RESPONSE;
|
|
}
|
|
|
|
return stat;
|
|
}
|
|
|
|
void mvs_set_sense(u8 *buffer, int len, int d_sense,
|
|
int key, int asc, int ascq)
|
|
{
|
|
memset(buffer, 0, len);
|
|
|
|
if (d_sense) {
|
|
/* Descriptor format */
|
|
if (len < 4) {
|
|
mv_printk("Length %d of sense buffer too small to "
|
|
"fit sense %x:%x:%x", len, key, asc, ascq);
|
|
}
|
|
|
|
buffer[0] = 0x72; /* Response Code */
|
|
if (len > 1)
|
|
buffer[1] = key; /* Sense Key */
|
|
if (len > 2)
|
|
buffer[2] = asc; /* ASC */
|
|
if (len > 3)
|
|
buffer[3] = ascq; /* ASCQ */
|
|
} else {
|
|
if (len < 14) {
|
|
mv_printk("Length %d of sense buffer too small to "
|
|
"fit sense %x:%x:%x", len, key, asc, ascq);
|
|
}
|
|
|
|
buffer[0] = 0x70; /* Response Code */
|
|
if (len > 2)
|
|
buffer[2] = key; /* Sense Key */
|
|
if (len > 7)
|
|
buffer[7] = 0x0a; /* Additional Sense Length */
|
|
if (len > 12)
|
|
buffer[12] = asc; /* ASC */
|
|
if (len > 13)
|
|
buffer[13] = ascq; /* ASCQ */
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
|
|
u8 key, u8 asc, u8 asc_q)
|
|
{
|
|
iu->datapres = 2;
|
|
iu->response_data_len = 0;
|
|
iu->sense_data_len = 17;
|
|
iu->status = 02;
|
|
mvs_set_sense(iu->sense_data, 17, 0,
|
|
key, asc, asc_q);
|
|
}
|
|
|
|
static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
|
|
u32 slot_idx)
|
|
{
|
|
struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
|
|
int stat;
|
|
u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
|
|
u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
|
|
u32 tfs = 0;
|
|
enum mvs_port_type type = PORT_TYPE_SAS;
|
|
|
|
if (err_dw0 & CMD_ISS_STPD)
|
|
MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
|
|
|
|
MVS_CHIP_DISP->command_active(mvi, slot_idx);
|
|
|
|
stat = SAM_STAT_CHECK_CONDITION;
|
|
switch (task->task_proto) {
|
|
case SAS_PROTOCOL_SSP:
|
|
{
|
|
stat = SAS_ABORTED_TASK;
|
|
if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
|
|
struct ssp_response_iu *iu = slot->response +
|
|
sizeof(struct mvs_err_info);
|
|
mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
|
|
sas_ssp_task_response(mvi->dev, task, iu);
|
|
stat = SAM_STAT_CHECK_CONDITION;
|
|
}
|
|
if (err_dw1 & bit(31))
|
|
mv_printk("reuse same slot, retry command.\n");
|
|
break;
|
|
}
|
|
case SAS_PROTOCOL_SMP:
|
|
stat = SAM_STAT_CHECK_CONDITION;
|
|
break;
|
|
|
|
case SAS_PROTOCOL_SATA:
|
|
case SAS_PROTOCOL_STP:
|
|
case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
|
|
{
|
|
task->ata_task.use_ncq = 0;
|
|
stat = SAS_PROTO_RESPONSE;
|
|
mvs_sata_done(mvi, task, slot_idx, err_dw0);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return stat;
|
|
}
|
|
|
|
int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
|
|
{
|
|
u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
|
|
struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
|
|
struct sas_task *task = slot->task;
|
|
struct mvs_device *mvi_dev = NULL;
|
|
struct task_status_struct *tstat;
|
|
struct domain_device *dev;
|
|
u32 aborted;
|
|
|
|
void *to;
|
|
enum exec_status sts;
|
|
|
|
if (unlikely(!task || !task->lldd_task || !task->dev))
|
|
return -1;
|
|
|
|
tstat = &task->task_status;
|
|
dev = task->dev;
|
|
mvi_dev = dev->lldd_dev;
|
|
|
|
spin_lock(&task->task_state_lock);
|
|
task->task_state_flags &=
|
|
~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
|
|
task->task_state_flags |= SAS_TASK_STATE_DONE;
|
|
/* race condition*/
|
|
aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
|
|
spin_unlock(&task->task_state_lock);
|
|
|
|
memset(tstat, 0, sizeof(*tstat));
|
|
tstat->resp = SAS_TASK_COMPLETE;
|
|
|
|
if (unlikely(aborted)) {
|
|
tstat->stat = SAS_ABORTED_TASK;
|
|
if (mvi_dev && mvi_dev->running_req)
|
|
mvi_dev->running_req--;
|
|
if (sas_protocol_ata(task->task_proto))
|
|
mvs_free_reg_set(mvi, mvi_dev);
|
|
|
|
mvs_slot_task_free(mvi, task, slot, slot_idx);
|
|
return -1;
|
|
}
|
|
|
|
/* when no device attaching, go ahead and complete by error handling*/
|
|
if (unlikely(!mvi_dev || flags)) {
|
|
if (!mvi_dev)
|
|
mv_dprintk("port has not device.\n");
|
|
tstat->stat = SAS_PHY_DOWN;
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* error info record present; slot->response is 32 bit aligned but may
|
|
* not be 64 bit aligned, so check for zero in two 32 bit reads
|
|
*/
|
|
if (unlikely((rx_desc & RXQ_ERR)
|
|
&& (*((u32 *)slot->response)
|
|
|| *(((u32 *)slot->response) + 1)))) {
|
|
mv_dprintk("port %d slot %d rx_desc %X has error info"
|
|
"%016llX.\n", slot->port->sas_port.id, slot_idx,
|
|
rx_desc, get_unaligned_le64(slot->response));
|
|
tstat->stat = mvs_slot_err(mvi, task, slot_idx);
|
|
tstat->resp = SAS_TASK_COMPLETE;
|
|
goto out;
|
|
}
|
|
|
|
switch (task->task_proto) {
|
|
case SAS_PROTOCOL_SSP:
|
|
/* hw says status == 0, datapres == 0 */
|
|
if (rx_desc & RXQ_GOOD) {
|
|
tstat->stat = SAM_STAT_GOOD;
|
|
tstat->resp = SAS_TASK_COMPLETE;
|
|
}
|
|
/* response frame present */
|
|
else if (rx_desc & RXQ_RSP) {
|
|
struct ssp_response_iu *iu = slot->response +
|
|
sizeof(struct mvs_err_info);
|
|
sas_ssp_task_response(mvi->dev, task, iu);
|
|
} else
|
|
tstat->stat = SAM_STAT_CHECK_CONDITION;
|
|
break;
|
|
|
|
case SAS_PROTOCOL_SMP: {
|
|
struct scatterlist *sg_resp = &task->smp_task.smp_resp;
|
|
tstat->stat = SAM_STAT_GOOD;
|
|
to = kmap_atomic(sg_page(sg_resp));
|
|
memcpy(to + sg_resp->offset,
|
|
slot->response + sizeof(struct mvs_err_info),
|
|
sg_dma_len(sg_resp));
|
|
kunmap_atomic(to);
|
|
break;
|
|
}
|
|
|
|
case SAS_PROTOCOL_SATA:
|
|
case SAS_PROTOCOL_STP:
|
|
case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
|
|
tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
tstat->stat = SAM_STAT_CHECK_CONDITION;
|
|
break;
|
|
}
|
|
if (!slot->port->port_attached) {
|
|
mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
|
|
tstat->stat = SAS_PHY_DOWN;
|
|
}
|
|
|
|
|
|
out:
|
|
if (mvi_dev && mvi_dev->running_req) {
|
|
mvi_dev->running_req--;
|
|
if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
|
|
mvs_free_reg_set(mvi, mvi_dev);
|
|
}
|
|
mvs_slot_task_free(mvi, task, slot, slot_idx);
|
|
sts = tstat->stat;
|
|
|
|
spin_unlock(&mvi->lock);
|
|
if (task->task_done)
|
|
task->task_done(task);
|
|
|
|
spin_lock(&mvi->lock);
|
|
|
|
return sts;
|
|
}
|
|
|
|
void mvs_do_release_task(struct mvs_info *mvi,
|
|
int phy_no, struct domain_device *dev)
|
|
{
|
|
u32 slot_idx;
|
|
struct mvs_phy *phy;
|
|
struct mvs_port *port;
|
|
struct mvs_slot_info *slot, *slot2;
|
|
|
|
phy = &mvi->phy[phy_no];
|
|
port = phy->port;
|
|
if (!port)
|
|
return;
|
|
/* clean cmpl queue in case request is already finished */
|
|
mvs_int_rx(mvi, false);
|
|
|
|
|
|
|
|
list_for_each_entry_safe(slot, slot2, &port->list, entry) {
|
|
struct sas_task *task;
|
|
slot_idx = (u32) (slot - mvi->slot_info);
|
|
task = slot->task;
|
|
|
|
if (dev && task->dev != dev)
|
|
continue;
|
|
|
|
mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
|
|
slot_idx, slot->slot_tag, task);
|
|
MVS_CHIP_DISP->command_active(mvi, slot_idx);
|
|
|
|
mvs_slot_complete(mvi, slot_idx, 1);
|
|
}
|
|
}
|
|
|
|
void mvs_release_task(struct mvs_info *mvi,
|
|
struct domain_device *dev)
|
|
{
|
|
int i, phyno[WIDE_PORT_MAX_PHY], num;
|
|
num = mvs_find_dev_phyno(dev, phyno);
|
|
for (i = 0; i < num; i++)
|
|
mvs_do_release_task(mvi, phyno[i], dev);
|
|
}
|
|
|
|
static void mvs_phy_disconnected(struct mvs_phy *phy)
|
|
{
|
|
phy->phy_attached = 0;
|
|
phy->att_dev_info = 0;
|
|
phy->att_dev_sas_addr = 0;
|
|
}
|
|
|
|
static void mvs_work_queue(struct work_struct *work)
|
|
{
|
|
struct delayed_work *dw = container_of(work, struct delayed_work, work);
|
|
struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
|
|
struct mvs_info *mvi = mwq->mvi;
|
|
unsigned long flags;
|
|
u32 phy_no = (unsigned long) mwq->data;
|
|
struct sas_ha_struct *sas_ha = mvi->sas;
|
|
struct mvs_phy *phy = &mvi->phy[phy_no];
|
|
struct asd_sas_phy *sas_phy = &phy->sas_phy;
|
|
|
|
spin_lock_irqsave(&mvi->lock, flags);
|
|
if (mwq->handler & PHY_PLUG_EVENT) {
|
|
|
|
if (phy->phy_event & PHY_PLUG_OUT) {
|
|
u32 tmp;
|
|
struct sas_identify_frame *id;
|
|
id = (struct sas_identify_frame *)phy->frame_rcvd;
|
|
tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
|
|
phy->phy_event &= ~PHY_PLUG_OUT;
|
|
if (!(tmp & PHY_READY_MASK)) {
|
|
sas_phy_disconnected(sas_phy);
|
|
mvs_phy_disconnected(phy);
|
|
sas_ha->notify_phy_event(sas_phy,
|
|
PHYE_LOSS_OF_SIGNAL);
|
|
mv_dprintk("phy%d Removed Device\n", phy_no);
|
|
} else {
|
|
MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
|
|
mvs_update_phyinfo(mvi, phy_no, 1);
|
|
mvs_bytes_dmaed(mvi, phy_no);
|
|
mvs_port_notify_formed(sas_phy, 0);
|
|
mv_dprintk("phy%d Attached Device\n", phy_no);
|
|
}
|
|
}
|
|
} else if (mwq->handler & EXP_BRCT_CHG) {
|
|
phy->phy_event &= ~EXP_BRCT_CHG;
|
|
sas_ha->notify_port_event(sas_phy,
|
|
PORTE_BROADCAST_RCVD);
|
|
mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
|
|
}
|
|
list_del(&mwq->entry);
|
|
spin_unlock_irqrestore(&mvi->lock, flags);
|
|
kfree(mwq);
|
|
}
|
|
|
|
static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
|
|
{
|
|
struct mvs_wq *mwq;
|
|
int ret = 0;
|
|
|
|
mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
|
|
if (mwq) {
|
|
mwq->mvi = mvi;
|
|
mwq->data = data;
|
|
mwq->handler = handler;
|
|
MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
|
|
list_add_tail(&mwq->entry, &mvi->wq_list);
|
|
schedule_delayed_work(&mwq->work_q, HZ * 2);
|
|
} else
|
|
ret = -ENOMEM;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void mvs_sig_time_out(unsigned long tphy)
|
|
{
|
|
struct mvs_phy *phy = (struct mvs_phy *)tphy;
|
|
struct mvs_info *mvi = phy->mvi;
|
|
u8 phy_no;
|
|
|
|
for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
|
|
if (&mvi->phy[phy_no] == phy) {
|
|
mv_dprintk("Get signature time out, reset phy %d\n",
|
|
phy_no+mvi->id*mvi->chip->n_phy);
|
|
MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
|
|
}
|
|
}
|
|
}
|
|
|
|
void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
|
|
{
|
|
u32 tmp;
|
|
struct mvs_phy *phy = &mvi->phy[phy_no];
|
|
|
|
phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
|
|
MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
|
|
mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
|
|
MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
|
|
mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
|
|
phy->irq_status);
|
|
|
|
/*
|
|
* events is port event now ,
|
|
* we need check the interrupt status which belongs to per port.
|
|
*/
|
|
|
|
if (phy->irq_status & PHYEV_DCDR_ERR) {
|
|
mv_dprintk("phy %d STP decoding error.\n",
|
|
phy_no + mvi->id*mvi->chip->n_phy);
|
|
}
|
|
|
|
if (phy->irq_status & PHYEV_POOF) {
|
|
mdelay(500);
|
|
if (!(phy->phy_event & PHY_PLUG_OUT)) {
|
|
int dev_sata = phy->phy_type & PORT_TYPE_SATA;
|
|
int ready;
|
|
mvs_do_release_task(mvi, phy_no, NULL);
|
|
phy->phy_event |= PHY_PLUG_OUT;
|
|
MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
|
|
mvs_handle_event(mvi,
|
|
(void *)(unsigned long)phy_no,
|
|
PHY_PLUG_EVENT);
|
|
ready = mvs_is_phy_ready(mvi, phy_no);
|
|
if (ready || dev_sata) {
|
|
if (MVS_CHIP_DISP->stp_reset)
|
|
MVS_CHIP_DISP->stp_reset(mvi,
|
|
phy_no);
|
|
else
|
|
MVS_CHIP_DISP->phy_reset(mvi,
|
|
phy_no, MVS_SOFT_RESET);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (phy->irq_status & PHYEV_COMWAKE) {
|
|
tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
|
|
MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
|
|
tmp | PHYEV_SIG_FIS);
|
|
if (phy->timer.function == NULL) {
|
|
phy->timer.data = (unsigned long)phy;
|
|
phy->timer.function = mvs_sig_time_out;
|
|
phy->timer.expires = jiffies + 5*HZ;
|
|
add_timer(&phy->timer);
|
|
}
|
|
}
|
|
if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
|
|
phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
|
|
mv_dprintk("notify plug in on phy[%d]\n", phy_no);
|
|
if (phy->phy_status) {
|
|
mdelay(10);
|
|
MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
|
|
if (phy->phy_type & PORT_TYPE_SATA) {
|
|
tmp = MVS_CHIP_DISP->read_port_irq_mask(
|
|
mvi, phy_no);
|
|
tmp &= ~PHYEV_SIG_FIS;
|
|
MVS_CHIP_DISP->write_port_irq_mask(mvi,
|
|
phy_no, tmp);
|
|
}
|
|
mvs_update_phyinfo(mvi, phy_no, 0);
|
|
if (phy->phy_type & PORT_TYPE_SAS) {
|
|
MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
|
|
mdelay(10);
|
|
}
|
|
|
|
mvs_bytes_dmaed(mvi, phy_no);
|
|
/* whether driver is going to handle hot plug */
|
|
if (phy->phy_event & PHY_PLUG_OUT) {
|
|
mvs_port_notify_formed(&phy->sas_phy, 0);
|
|
phy->phy_event &= ~PHY_PLUG_OUT;
|
|
}
|
|
} else {
|
|
mv_dprintk("plugin interrupt but phy%d is gone\n",
|
|
phy_no + mvi->id*mvi->chip->n_phy);
|
|
}
|
|
} else if (phy->irq_status & PHYEV_BROAD_CH) {
|
|
mv_dprintk("phy %d broadcast change.\n",
|
|
phy_no + mvi->id*mvi->chip->n_phy);
|
|
mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
|
|
EXP_BRCT_CHG);
|
|
}
|
|
}
|
|
|
|
int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
|
|
{
|
|
u32 rx_prod_idx, rx_desc;
|
|
bool attn = false;
|
|
|
|
/* the first dword in the RX ring is special: it contains
|
|
* a mirror of the hardware's RX producer index, so that
|
|
* we don't have to stall the CPU reading that register.
|
|
* The actual RX ring is offset by one dword, due to this.
|
|
*/
|
|
rx_prod_idx = mvi->rx_cons;
|
|
mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
|
|
if (mvi->rx_cons == 0xfff) /* h/w hasn't touched RX ring yet */
|
|
return 0;
|
|
|
|
/* The CMPL_Q may come late, read from register and try again
|
|
* note: if coalescing is enabled,
|
|
* it will need to read from register every time for sure
|
|
*/
|
|
if (unlikely(mvi->rx_cons == rx_prod_idx))
|
|
mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
|
|
|
|
if (mvi->rx_cons == rx_prod_idx)
|
|
return 0;
|
|
|
|
while (mvi->rx_cons != rx_prod_idx) {
|
|
/* increment our internal RX consumer pointer */
|
|
rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
|
|
rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
|
|
|
|
if (likely(rx_desc & RXQ_DONE))
|
|
mvs_slot_complete(mvi, rx_desc, 0);
|
|
if (rx_desc & RXQ_ATTN) {
|
|
attn = true;
|
|
} else if (rx_desc & RXQ_ERR) {
|
|
if (!(rx_desc & RXQ_DONE))
|
|
mvs_slot_complete(mvi, rx_desc, 0);
|
|
} else if (rx_desc & RXQ_SLOT_RESET) {
|
|
mvs_slot_free(mvi, rx_desc);
|
|
}
|
|
}
|
|
|
|
if (attn && self_clear)
|
|
MVS_CHIP_DISP->int_full(mvi);
|
|
return 0;
|
|
}
|
|
|