![Kees Cook](/assets/img/avatar_default.png)
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com> Cc: Tomas Henzl <thenzl@redhat.com> Cc: Quentin Lambert <lambert.quentin@gmail.com> Cc: linux-scsi@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
938 lines
27 KiB
C
938 lines
27 KiB
C
/*
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* Aic94xx SAS/SATA driver SCB management.
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*
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* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
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* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
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*
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* This file is licensed under GPLv2.
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*
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* This file is part of the aic94xx driver.
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*
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* The aic94xx driver 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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* The aic94xx driver 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 the aic94xx driver; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <linux/gfp.h>
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#include <scsi/scsi_host.h>
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#include "aic94xx.h"
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#include "aic94xx_reg.h"
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#include "aic94xx_hwi.h"
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#include "aic94xx_seq.h"
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#include "aic94xx_dump.h"
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/* ---------- EMPTY SCB ---------- */
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#define DL_PHY_MASK 7
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#define BYTES_DMAED 0
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#define PRIMITIVE_RECVD 0x08
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#define PHY_EVENT 0x10
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#define LINK_RESET_ERROR 0x18
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#define TIMER_EVENT 0x20
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#define REQ_TASK_ABORT 0xF0
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#define REQ_DEVICE_RESET 0xF1
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#define SIGNAL_NCQ_ERROR 0xF2
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#define CLEAR_NCQ_ERROR 0xF3
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#define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \
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| CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
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| CURRENT_OOB_ERROR)
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static void get_lrate_mode(struct asd_phy *phy, u8 oob_mode)
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{
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struct sas_phy *sas_phy = phy->sas_phy.phy;
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switch (oob_mode & 7) {
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case PHY_SPEED_60:
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/* FIXME: sas transport class doesn't have this */
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phy->sas_phy.linkrate = SAS_LINK_RATE_6_0_GBPS;
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phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_6_0_GBPS;
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break;
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case PHY_SPEED_30:
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phy->sas_phy.linkrate = SAS_LINK_RATE_3_0_GBPS;
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phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
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break;
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case PHY_SPEED_15:
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phy->sas_phy.linkrate = SAS_LINK_RATE_1_5_GBPS;
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phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS;
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break;
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}
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sas_phy->negotiated_linkrate = phy->sas_phy.linkrate;
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sas_phy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
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sas_phy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
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sas_phy->maximum_linkrate = phy->phy_desc->max_sas_lrate;
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sas_phy->minimum_linkrate = phy->phy_desc->min_sas_lrate;
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if (oob_mode & SAS_MODE)
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phy->sas_phy.oob_mode = SAS_OOB_MODE;
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else if (oob_mode & SATA_MODE)
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phy->sas_phy.oob_mode = SATA_OOB_MODE;
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}
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static void asd_phy_event_tasklet(struct asd_ascb *ascb,
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struct done_list_struct *dl)
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{
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struct asd_ha_struct *asd_ha = ascb->ha;
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struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
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int phy_id = dl->status_block[0] & DL_PHY_MASK;
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struct asd_phy *phy = &asd_ha->phys[phy_id];
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u8 oob_status = dl->status_block[1] & PHY_EVENTS_STATUS;
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u8 oob_mode = dl->status_block[2];
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switch (oob_status) {
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case CURRENT_LOSS_OF_SIGNAL:
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/* directly attached device was removed */
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ASD_DPRINTK("phy%d: device unplugged\n", phy_id);
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asd_turn_led(asd_ha, phy_id, 0);
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sas_phy_disconnected(&phy->sas_phy);
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sas_ha->notify_phy_event(&phy->sas_phy, PHYE_LOSS_OF_SIGNAL);
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break;
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case CURRENT_OOB_DONE:
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/* hot plugged device */
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asd_turn_led(asd_ha, phy_id, 1);
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get_lrate_mode(phy, oob_mode);
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ASD_DPRINTK("phy%d device plugged: lrate:0x%x, proto:0x%x\n",
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phy_id, phy->sas_phy.linkrate, phy->sas_phy.iproto);
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sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE);
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break;
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case CURRENT_SPINUP_HOLD:
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/* hot plug SATA, no COMWAKE sent */
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asd_turn_led(asd_ha, phy_id, 1);
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sas_ha->notify_phy_event(&phy->sas_phy, PHYE_SPINUP_HOLD);
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break;
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case CURRENT_GTO_TIMEOUT:
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case CURRENT_OOB_ERROR:
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ASD_DPRINTK("phy%d error while OOB: oob status:0x%x\n", phy_id,
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dl->status_block[1]);
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asd_turn_led(asd_ha, phy_id, 0);
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sas_phy_disconnected(&phy->sas_phy);
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sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_ERROR);
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break;
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}
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}
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/* If phys are enabled sparsely, this will do the right thing. */
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static unsigned ord_phy(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
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{
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u8 enabled_mask = asd_ha->hw_prof.enabled_phys;
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int i, k = 0;
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for_each_phy(enabled_mask, enabled_mask, i) {
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if (&asd_ha->phys[i] == phy)
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return k;
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k++;
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}
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return 0;
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}
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/**
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* asd_get_attached_sas_addr -- extract/generate attached SAS address
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* phy: pointer to asd_phy
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* sas_addr: pointer to buffer where the SAS address is to be written
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*
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* This function extracts the SAS address from an IDENTIFY frame
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* received. If OOB is SATA, then a SAS address is generated from the
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* HA tables.
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*
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* LOCKING: the frame_rcvd_lock needs to be held since this parses the frame
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* buffer.
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*/
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static void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr)
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{
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if (phy->sas_phy.frame_rcvd[0] == 0x34
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&& phy->sas_phy.oob_mode == SATA_OOB_MODE) {
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struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha;
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/* FIS device-to-host */
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u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr);
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addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy);
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*(__be64 *)sas_addr = cpu_to_be64(addr);
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} else {
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struct sas_identify_frame *idframe =
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(void *) phy->sas_phy.frame_rcvd;
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memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE);
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}
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}
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static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
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{
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int i;
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struct asd_port *free_port = NULL;
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struct asd_port *port;
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struct asd_sas_phy *sas_phy = &phy->sas_phy;
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unsigned long flags;
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spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
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if (!phy->asd_port) {
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for (i = 0; i < ASD_MAX_PHYS; i++) {
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port = &asd_ha->asd_ports[i];
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/* Check for wide port */
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if (port->num_phys > 0 &&
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memcmp(port->sas_addr, sas_phy->sas_addr,
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SAS_ADDR_SIZE) == 0 &&
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memcmp(port->attached_sas_addr,
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sas_phy->attached_sas_addr,
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SAS_ADDR_SIZE) == 0) {
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break;
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}
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/* Find a free port */
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if (port->num_phys == 0 && free_port == NULL) {
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free_port = port;
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}
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}
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/* Use a free port if this doesn't form a wide port */
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if (i >= ASD_MAX_PHYS) {
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port = free_port;
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BUG_ON(!port);
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memcpy(port->sas_addr, sas_phy->sas_addr,
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SAS_ADDR_SIZE);
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memcpy(port->attached_sas_addr,
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sas_phy->attached_sas_addr,
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SAS_ADDR_SIZE);
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}
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port->num_phys++;
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port->phy_mask |= (1U << sas_phy->id);
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phy->asd_port = port;
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}
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ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n",
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__func__, phy->asd_port->phy_mask, sas_phy->id);
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asd_update_port_links(asd_ha, phy);
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spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
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}
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static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
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{
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struct asd_port *port = phy->asd_port;
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struct asd_sas_phy *sas_phy = &phy->sas_phy;
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unsigned long flags;
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spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
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if (port) {
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port->num_phys--;
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port->phy_mask &= ~(1U << sas_phy->id);
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phy->asd_port = NULL;
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}
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spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
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}
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static void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb,
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struct done_list_struct *dl,
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int edb_id, int phy_id)
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{
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unsigned long flags;
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int edb_el = edb_id + ascb->edb_index;
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struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el];
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struct asd_phy *phy = &ascb->ha->phys[phy_id];
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struct sas_ha_struct *sas_ha = phy->sas_phy.ha;
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u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2];
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size = min(size, (u16) sizeof(phy->frame_rcvd));
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spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags);
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memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size);
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phy->sas_phy.frame_rcvd_size = size;
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asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
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spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
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asd_dump_frame_rcvd(phy, dl);
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asd_form_port(ascb->ha, phy);
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sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED);
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}
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static void asd_link_reset_err_tasklet(struct asd_ascb *ascb,
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struct done_list_struct *dl,
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int phy_id)
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{
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struct asd_ha_struct *asd_ha = ascb->ha;
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struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
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struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
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struct asd_phy *phy = &asd_ha->phys[phy_id];
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u8 lr_error = dl->status_block[1];
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u8 retries_left = dl->status_block[2];
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switch (lr_error) {
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case 0:
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ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id);
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break;
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case 1:
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ASD_DPRINTK("phy%d: Loss of signal\n", phy_id);
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break;
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case 2:
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ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id);
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break;
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case 3:
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ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id);
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break;
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default:
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ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n",
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phy_id, lr_error);
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break;
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}
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asd_turn_led(asd_ha, phy_id, 0);
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sas_phy_disconnected(sas_phy);
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asd_deform_port(asd_ha, phy);
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sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR);
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if (retries_left == 0) {
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int num = 1;
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struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num,
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GFP_ATOMIC);
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if (!cp) {
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asd_printk("%s: out of memory\n", __func__);
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goto out;
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}
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ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n",
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phy_id);
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asd_build_control_phy(cp, phy_id, ENABLE_PHY);
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if (asd_post_ascb_list(ascb->ha, cp, 1) != 0)
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asd_ascb_free(cp);
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}
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out:
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;
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}
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static void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb,
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struct done_list_struct *dl,
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int phy_id)
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{
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unsigned long flags;
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struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha;
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struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
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struct asd_ha_struct *asd_ha = ascb->ha;
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struct asd_phy *phy = &asd_ha->phys[phy_id];
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u8 reg = dl->status_block[1];
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u32 cont = dl->status_block[2] << ((reg & 3)*8);
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reg &= ~3;
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switch (reg) {
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case LmPRMSTAT0BYTE0:
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switch (cont) {
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case LmBROADCH:
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case LmBROADRVCH0:
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case LmBROADRVCH1:
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case LmBROADSES:
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ASD_DPRINTK("phy%d: BROADCAST change received:%d\n",
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phy_id, cont);
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spin_lock_irqsave(&sas_phy->sas_prim_lock, flags);
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sas_phy->sas_prim = ffs(cont);
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spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags);
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sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD);
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break;
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case LmUNKNOWNP:
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ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id);
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break;
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default:
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ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
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phy_id, reg, cont);
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break;
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}
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break;
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case LmPRMSTAT1BYTE0:
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switch (cont) {
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case LmHARDRST:
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ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n",
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phy_id);
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/* The sequencer disables all phys on that port.
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* We have to re-enable the phys ourselves. */
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asd_deform_port(asd_ha, phy);
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sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET);
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break;
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default:
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ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
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phy_id, reg, cont);
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break;
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}
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break;
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default:
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ASD_DPRINTK("unknown primitive register:0x%x\n",
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dl->status_block[1]);
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break;
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}
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}
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/**
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* asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB
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* @ascb: pointer to Empty SCB
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* @edb_id: index [0,6] to the empty data buffer which is to be invalidated
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*
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* After an EDB has been invalidated, if all EDBs in this ESCB have been
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* invalidated, the ESCB is posted back to the sequencer.
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* Context is tasklet/IRQ.
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*/
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void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
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{
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struct asd_seq_data *seq = &ascb->ha->seq;
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struct empty_scb *escb = &ascb->scb->escb;
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struct sg_el *eb = &escb->eb[edb_id];
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struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id];
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memset(edb->vaddr, 0, ASD_EDB_SIZE);
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eb->flags |= ELEMENT_NOT_VALID;
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escb->num_valid--;
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if (escb->num_valid == 0) {
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int i;
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/* ASD_DPRINTK("reposting escb: vaddr: 0x%p, "
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"dma_handle: 0x%08llx, next: 0x%08llx, "
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"index:%d, opcode:0x%02x\n",
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ascb->dma_scb.vaddr,
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(u64)ascb->dma_scb.dma_handle,
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le64_to_cpu(ascb->scb->header.next_scb),
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le16_to_cpu(ascb->scb->header.index),
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ascb->scb->header.opcode);
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*/
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escb->num_valid = ASD_EDBS_PER_SCB;
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for (i = 0; i < ASD_EDBS_PER_SCB; i++)
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escb->eb[i].flags = 0;
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if (!list_empty(&ascb->list))
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list_del_init(&ascb->list);
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i = asd_post_escb_list(ascb->ha, ascb, 1);
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if (i)
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asd_printk("couldn't post escb, err:%d\n", i);
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}
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}
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|
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static void escb_tasklet_complete(struct asd_ascb *ascb,
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struct done_list_struct *dl)
|
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{
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struct asd_ha_struct *asd_ha = ascb->ha;
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struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
|
|
int edb = (dl->opcode & DL_PHY_MASK) - 1; /* [0xc1,0xc7] -> [0,6] */
|
|
u8 sb_opcode = dl->status_block[0];
|
|
int phy_id = sb_opcode & DL_PHY_MASK;
|
|
struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
|
|
struct asd_phy *phy = &asd_ha->phys[phy_id];
|
|
|
|
if (edb > 6 || edb < 0) {
|
|
ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
|
|
edb, dl->opcode);
|
|
ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
|
|
sb_opcode, phy_id);
|
|
ASD_DPRINTK("escb: vaddr: 0x%p, "
|
|
"dma_handle: 0x%llx, next: 0x%llx, "
|
|
"index:%d, opcode:0x%02x\n",
|
|
ascb->dma_scb.vaddr,
|
|
(unsigned long long)ascb->dma_scb.dma_handle,
|
|
(unsigned long long)
|
|
le64_to_cpu(ascb->scb->header.next_scb),
|
|
le16_to_cpu(ascb->scb->header.index),
|
|
ascb->scb->header.opcode);
|
|
}
|
|
|
|
/* Catch these before we mask off the sb_opcode bits */
|
|
switch (sb_opcode) {
|
|
case REQ_TASK_ABORT: {
|
|
struct asd_ascb *a, *b;
|
|
u16 tc_abort;
|
|
struct domain_device *failed_dev = NULL;
|
|
|
|
ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
|
|
__func__, dl->status_block[3]);
|
|
|
|
/*
|
|
* Find the task that caused the abort and abort it first.
|
|
* The sequencer won't put anything on the done list until
|
|
* that happens.
|
|
*/
|
|
tc_abort = *((u16*)(&dl->status_block[1]));
|
|
tc_abort = le16_to_cpu(tc_abort);
|
|
|
|
list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
|
|
struct sas_task *task = a->uldd_task;
|
|
|
|
if (a->tc_index != tc_abort)
|
|
continue;
|
|
|
|
if (task) {
|
|
failed_dev = task->dev;
|
|
sas_task_abort(task);
|
|
} else {
|
|
ASD_DPRINTK("R_T_A for non TASK scb 0x%x\n",
|
|
a->scb->header.opcode);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (!failed_dev) {
|
|
ASD_DPRINTK("%s: Can't find task (tc=%d) to abort!\n",
|
|
__func__, tc_abort);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Now abort everything else for that device (hba?) so
|
|
* that the EH will wake up and do something.
|
|
*/
|
|
list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list) {
|
|
struct sas_task *task = a->uldd_task;
|
|
|
|
if (task &&
|
|
task->dev == failed_dev &&
|
|
a->tc_index != tc_abort)
|
|
sas_task_abort(task);
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
case REQ_DEVICE_RESET: {
|
|
struct asd_ascb *a;
|
|
u16 conn_handle;
|
|
unsigned long flags;
|
|
struct sas_task *last_dev_task = NULL;
|
|
|
|
conn_handle = *((u16*)(&dl->status_block[1]));
|
|
conn_handle = le16_to_cpu(conn_handle);
|
|
|
|
ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __func__,
|
|
dl->status_block[3]);
|
|
|
|
/* Find the last pending task for the device... */
|
|
list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
|
|
u16 x;
|
|
struct domain_device *dev;
|
|
struct sas_task *task = a->uldd_task;
|
|
|
|
if (!task)
|
|
continue;
|
|
dev = task->dev;
|
|
|
|
x = (unsigned long)dev->lldd_dev;
|
|
if (x == conn_handle)
|
|
last_dev_task = task;
|
|
}
|
|
|
|
if (!last_dev_task) {
|
|
ASD_DPRINTK("%s: Device reset for idle device %d?\n",
|
|
__func__, conn_handle);
|
|
goto out;
|
|
}
|
|
|
|
/* ...and set the reset flag */
|
|
spin_lock_irqsave(&last_dev_task->task_state_lock, flags);
|
|
last_dev_task->task_state_flags |= SAS_TASK_NEED_DEV_RESET;
|
|
spin_unlock_irqrestore(&last_dev_task->task_state_lock, flags);
|
|
|
|
/* Kill all pending tasks for the device */
|
|
list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
|
|
u16 x;
|
|
struct domain_device *dev;
|
|
struct sas_task *task = a->uldd_task;
|
|
|
|
if (!task)
|
|
continue;
|
|
dev = task->dev;
|
|
|
|
x = (unsigned long)dev->lldd_dev;
|
|
if (x == conn_handle)
|
|
sas_task_abort(task);
|
|
}
|
|
|
|
goto out;
|
|
}
|
|
case SIGNAL_NCQ_ERROR:
|
|
ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __func__);
|
|
goto out;
|
|
case CLEAR_NCQ_ERROR:
|
|
ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
sb_opcode &= ~DL_PHY_MASK;
|
|
|
|
switch (sb_opcode) {
|
|
case BYTES_DMAED:
|
|
ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __func__, phy_id);
|
|
asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
|
|
break;
|
|
case PRIMITIVE_RECVD:
|
|
ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __func__,
|
|
phy_id);
|
|
asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
|
|
break;
|
|
case PHY_EVENT:
|
|
ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __func__, phy_id);
|
|
asd_phy_event_tasklet(ascb, dl);
|
|
break;
|
|
case LINK_RESET_ERROR:
|
|
ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __func__,
|
|
phy_id);
|
|
asd_link_reset_err_tasklet(ascb, dl, phy_id);
|
|
break;
|
|
case TIMER_EVENT:
|
|
ASD_DPRINTK("%s: phy%d: TIMER_EVENT, lost dw sync\n",
|
|
__func__, phy_id);
|
|
asd_turn_led(asd_ha, phy_id, 0);
|
|
/* the device is gone */
|
|
sas_phy_disconnected(sas_phy);
|
|
asd_deform_port(asd_ha, phy);
|
|
sas_ha->notify_port_event(sas_phy, PORTE_TIMER_EVENT);
|
|
break;
|
|
default:
|
|
ASD_DPRINTK("%s: phy%d: unknown event:0x%x\n", __func__,
|
|
phy_id, sb_opcode);
|
|
ASD_DPRINTK("edb is 0x%x! dl->opcode is 0x%x\n",
|
|
edb, dl->opcode);
|
|
ASD_DPRINTK("sb_opcode : 0x%x, phy_id: 0x%x\n",
|
|
sb_opcode, phy_id);
|
|
ASD_DPRINTK("escb: vaddr: 0x%p, "
|
|
"dma_handle: 0x%llx, next: 0x%llx, "
|
|
"index:%d, opcode:0x%02x\n",
|
|
ascb->dma_scb.vaddr,
|
|
(unsigned long long)ascb->dma_scb.dma_handle,
|
|
(unsigned long long)
|
|
le64_to_cpu(ascb->scb->header.next_scb),
|
|
le16_to_cpu(ascb->scb->header.index),
|
|
ascb->scb->header.opcode);
|
|
|
|
break;
|
|
}
|
|
out:
|
|
asd_invalidate_edb(ascb, edb);
|
|
}
|
|
|
|
int asd_init_post_escbs(struct asd_ha_struct *asd_ha)
|
|
{
|
|
struct asd_seq_data *seq = &asd_ha->seq;
|
|
int i;
|
|
|
|
for (i = 0; i < seq->num_escbs; i++)
|
|
seq->escb_arr[i]->tasklet_complete = escb_tasklet_complete;
|
|
|
|
ASD_DPRINTK("posting %d escbs\n", i);
|
|
return asd_post_escb_list(asd_ha, seq->escb_arr[0], seq->num_escbs);
|
|
}
|
|
|
|
/* ---------- CONTROL PHY ---------- */
|
|
|
|
#define CONTROL_PHY_STATUS (CURRENT_DEVICE_PRESENT | CURRENT_OOB_DONE \
|
|
| CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
|
|
| CURRENT_OOB_ERROR)
|
|
|
|
/**
|
|
* control_phy_tasklet_complete -- tasklet complete for CONTROL PHY ascb
|
|
* @ascb: pointer to an ascb
|
|
* @dl: pointer to the done list entry
|
|
*
|
|
* This function completes a CONTROL PHY scb and frees the ascb.
|
|
* A note on LEDs:
|
|
* - an LED blinks if there is IO though it,
|
|
* - if a device is connected to the LED, it is lit,
|
|
* - if no device is connected to the LED, is is dimmed (off).
|
|
*/
|
|
static void control_phy_tasklet_complete(struct asd_ascb *ascb,
|
|
struct done_list_struct *dl)
|
|
{
|
|
struct asd_ha_struct *asd_ha = ascb->ha;
|
|
struct scb *scb = ascb->scb;
|
|
struct control_phy *control_phy = &scb->control_phy;
|
|
u8 phy_id = control_phy->phy_id;
|
|
struct asd_phy *phy = &ascb->ha->phys[phy_id];
|
|
|
|
u8 status = dl->status_block[0];
|
|
u8 oob_status = dl->status_block[1];
|
|
u8 oob_mode = dl->status_block[2];
|
|
/* u8 oob_signals= dl->status_block[3]; */
|
|
|
|
if (status != 0) {
|
|
ASD_DPRINTK("%s: phy%d status block opcode:0x%x\n",
|
|
__func__, phy_id, status);
|
|
goto out;
|
|
}
|
|
|
|
switch (control_phy->sub_func) {
|
|
case DISABLE_PHY:
|
|
asd_ha->hw_prof.enabled_phys &= ~(1 << phy_id);
|
|
asd_turn_led(asd_ha, phy_id, 0);
|
|
asd_control_led(asd_ha, phy_id, 0);
|
|
ASD_DPRINTK("%s: disable phy%d\n", __func__, phy_id);
|
|
break;
|
|
|
|
case ENABLE_PHY:
|
|
asd_control_led(asd_ha, phy_id, 1);
|
|
if (oob_status & CURRENT_OOB_DONE) {
|
|
asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
|
|
get_lrate_mode(phy, oob_mode);
|
|
asd_turn_led(asd_ha, phy_id, 1);
|
|
ASD_DPRINTK("%s: phy%d, lrate:0x%x, proto:0x%x\n",
|
|
__func__, phy_id,phy->sas_phy.linkrate,
|
|
phy->sas_phy.iproto);
|
|
} else if (oob_status & CURRENT_SPINUP_HOLD) {
|
|
asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
|
|
asd_turn_led(asd_ha, phy_id, 1);
|
|
ASD_DPRINTK("%s: phy%d, spinup hold\n", __func__,
|
|
phy_id);
|
|
} else if (oob_status & CURRENT_ERR_MASK) {
|
|
asd_turn_led(asd_ha, phy_id, 0);
|
|
ASD_DPRINTK("%s: phy%d: error: oob status:0x%02x\n",
|
|
__func__, phy_id, oob_status);
|
|
} else if (oob_status & (CURRENT_HOT_PLUG_CNCT
|
|
| CURRENT_DEVICE_PRESENT)) {
|
|
asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
|
|
asd_turn_led(asd_ha, phy_id, 1);
|
|
ASD_DPRINTK("%s: phy%d: hot plug or device present\n",
|
|
__func__, phy_id);
|
|
} else {
|
|
asd_ha->hw_prof.enabled_phys |= (1 << phy_id);
|
|
asd_turn_led(asd_ha, phy_id, 0);
|
|
ASD_DPRINTK("%s: phy%d: no device present: "
|
|
"oob_status:0x%x\n",
|
|
__func__, phy_id, oob_status);
|
|
}
|
|
break;
|
|
case RELEASE_SPINUP_HOLD:
|
|
case PHY_NO_OP:
|
|
case EXECUTE_HARD_RESET:
|
|
ASD_DPRINTK("%s: phy%d: sub_func:0x%x\n", __func__,
|
|
phy_id, control_phy->sub_func);
|
|
/* XXX finish */
|
|
break;
|
|
default:
|
|
ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __func__,
|
|
phy_id, control_phy->sub_func);
|
|
break;
|
|
}
|
|
out:
|
|
asd_ascb_free(ascb);
|
|
}
|
|
|
|
static void set_speed_mask(u8 *speed_mask, struct asd_phy_desc *pd)
|
|
{
|
|
/* disable all speeds, then enable defaults */
|
|
*speed_mask = SAS_SPEED_60_DIS | SAS_SPEED_30_DIS | SAS_SPEED_15_DIS
|
|
| SATA_SPEED_30_DIS | SATA_SPEED_15_DIS;
|
|
|
|
switch (pd->max_sas_lrate) {
|
|
case SAS_LINK_RATE_6_0_GBPS:
|
|
*speed_mask &= ~SAS_SPEED_60_DIS;
|
|
default:
|
|
case SAS_LINK_RATE_3_0_GBPS:
|
|
*speed_mask &= ~SAS_SPEED_30_DIS;
|
|
case SAS_LINK_RATE_1_5_GBPS:
|
|
*speed_mask &= ~SAS_SPEED_15_DIS;
|
|
}
|
|
|
|
switch (pd->min_sas_lrate) {
|
|
case SAS_LINK_RATE_6_0_GBPS:
|
|
*speed_mask |= SAS_SPEED_30_DIS;
|
|
case SAS_LINK_RATE_3_0_GBPS:
|
|
*speed_mask |= SAS_SPEED_15_DIS;
|
|
default:
|
|
case SAS_LINK_RATE_1_5_GBPS:
|
|
/* nothing to do */
|
|
;
|
|
}
|
|
|
|
switch (pd->max_sata_lrate) {
|
|
case SAS_LINK_RATE_3_0_GBPS:
|
|
*speed_mask &= ~SATA_SPEED_30_DIS;
|
|
default:
|
|
case SAS_LINK_RATE_1_5_GBPS:
|
|
*speed_mask &= ~SATA_SPEED_15_DIS;
|
|
}
|
|
|
|
switch (pd->min_sata_lrate) {
|
|
case SAS_LINK_RATE_3_0_GBPS:
|
|
*speed_mask |= SATA_SPEED_15_DIS;
|
|
default:
|
|
case SAS_LINK_RATE_1_5_GBPS:
|
|
/* nothing to do */
|
|
;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* asd_build_control_phy -- build a CONTROL PHY SCB
|
|
* @ascb: pointer to an ascb
|
|
* @phy_id: phy id to control, integer
|
|
* @subfunc: subfunction, what to actually to do the phy
|
|
*
|
|
* This function builds a CONTROL PHY scb. No allocation of any kind
|
|
* is performed. @ascb is allocated with the list function.
|
|
* The caller can override the ascb->tasklet_complete to point
|
|
* to its own callback function. It must call asd_ascb_free()
|
|
* at its tasklet complete function.
|
|
* See the default implementation.
|
|
*/
|
|
void asd_build_control_phy(struct asd_ascb *ascb, int phy_id, u8 subfunc)
|
|
{
|
|
struct asd_phy *phy = &ascb->ha->phys[phy_id];
|
|
struct scb *scb = ascb->scb;
|
|
struct control_phy *control_phy = &scb->control_phy;
|
|
|
|
scb->header.opcode = CONTROL_PHY;
|
|
control_phy->phy_id = (u8) phy_id;
|
|
control_phy->sub_func = subfunc;
|
|
|
|
switch (subfunc) {
|
|
case EXECUTE_HARD_RESET: /* 0x81 */
|
|
case ENABLE_PHY: /* 0x01 */
|
|
/* decide hot plug delay */
|
|
control_phy->hot_plug_delay = HOTPLUG_DELAY_TIMEOUT;
|
|
|
|
/* decide speed mask */
|
|
set_speed_mask(&control_phy->speed_mask, phy->phy_desc);
|
|
|
|
/* initiator port settings are in the hi nibble */
|
|
if (phy->sas_phy.role == PHY_ROLE_INITIATOR)
|
|
control_phy->port_type = SAS_PROTOCOL_ALL << 4;
|
|
else if (phy->sas_phy.role == PHY_ROLE_TARGET)
|
|
control_phy->port_type = SAS_PROTOCOL_ALL;
|
|
else
|
|
control_phy->port_type =
|
|
(SAS_PROTOCOL_ALL << 4) | SAS_PROTOCOL_ALL;
|
|
|
|
/* link reset retries, this should be nominal */
|
|
control_phy->link_reset_retries = 10;
|
|
|
|
case RELEASE_SPINUP_HOLD: /* 0x02 */
|
|
/* decide the func_mask */
|
|
control_phy->func_mask = FUNCTION_MASK_DEFAULT;
|
|
if (phy->phy_desc->flags & ASD_SATA_SPINUP_HOLD)
|
|
control_phy->func_mask &= ~SPINUP_HOLD_DIS;
|
|
else
|
|
control_phy->func_mask |= SPINUP_HOLD_DIS;
|
|
}
|
|
|
|
control_phy->conn_handle = cpu_to_le16(0xFFFF);
|
|
|
|
ascb->tasklet_complete = control_phy_tasklet_complete;
|
|
}
|
|
|
|
/* ---------- INITIATE LINK ADM TASK ---------- */
|
|
|
|
#if 0
|
|
|
|
static void link_adm_tasklet_complete(struct asd_ascb *ascb,
|
|
struct done_list_struct *dl)
|
|
{
|
|
u8 opcode = dl->opcode;
|
|
struct initiate_link_adm *link_adm = &ascb->scb->link_adm;
|
|
u8 phy_id = link_adm->phy_id;
|
|
|
|
if (opcode != TC_NO_ERROR) {
|
|
asd_printk("phy%d: link adm task 0x%x completed with error "
|
|
"0x%x\n", phy_id, link_adm->sub_func, opcode);
|
|
}
|
|
ASD_DPRINTK("phy%d: link adm task 0x%x: 0x%x\n",
|
|
phy_id, link_adm->sub_func, opcode);
|
|
|
|
asd_ascb_free(ascb);
|
|
}
|
|
|
|
void asd_build_initiate_link_adm_task(struct asd_ascb *ascb, int phy_id,
|
|
u8 subfunc)
|
|
{
|
|
struct scb *scb = ascb->scb;
|
|
struct initiate_link_adm *link_adm = &scb->link_adm;
|
|
|
|
scb->header.opcode = INITIATE_LINK_ADM_TASK;
|
|
|
|
link_adm->phy_id = phy_id;
|
|
link_adm->sub_func = subfunc;
|
|
link_adm->conn_handle = cpu_to_le16(0xFFFF);
|
|
|
|
ascb->tasklet_complete = link_adm_tasklet_complete;
|
|
}
|
|
|
|
#endif /* 0 */
|
|
|
|
/* ---------- SCB timer ---------- */
|
|
|
|
/**
|
|
* asd_ascb_timedout -- called when a pending SCB's timer has expired
|
|
* @data: unsigned long, a pointer to the ascb in question
|
|
*
|
|
* This is the default timeout function which does the most necessary.
|
|
* Upper layers can implement their own timeout function, say to free
|
|
* resources they have with this SCB, and then call this one at the
|
|
* end of their timeout function. To do this, one should initialize
|
|
* the ascb->timer.{function, expires} prior to calling the post
|
|
* function. The timer is started by the post function.
|
|
*/
|
|
void asd_ascb_timedout(struct timer_list *t)
|
|
{
|
|
struct asd_ascb *ascb = from_timer(ascb, t, timer);
|
|
struct asd_seq_data *seq = &ascb->ha->seq;
|
|
unsigned long flags;
|
|
|
|
ASD_DPRINTK("scb:0x%x timed out\n", ascb->scb->header.opcode);
|
|
|
|
spin_lock_irqsave(&seq->pend_q_lock, flags);
|
|
seq->pending--;
|
|
list_del_init(&ascb->list);
|
|
spin_unlock_irqrestore(&seq->pend_q_lock, flags);
|
|
|
|
asd_ascb_free(ascb);
|
|
}
|
|
|
|
/* ---------- CONTROL PHY ---------- */
|
|
|
|
/* Given the spec value, return a driver value. */
|
|
static const int phy_func_table[] = {
|
|
[PHY_FUNC_NOP] = PHY_NO_OP,
|
|
[PHY_FUNC_LINK_RESET] = ENABLE_PHY,
|
|
[PHY_FUNC_HARD_RESET] = EXECUTE_HARD_RESET,
|
|
[PHY_FUNC_DISABLE] = DISABLE_PHY,
|
|
[PHY_FUNC_RELEASE_SPINUP_HOLD] = RELEASE_SPINUP_HOLD,
|
|
};
|
|
|
|
int asd_control_phy(struct asd_sas_phy *phy, enum phy_func func, void *arg)
|
|
{
|
|
struct asd_ha_struct *asd_ha = phy->ha->lldd_ha;
|
|
struct asd_phy_desc *pd = asd_ha->phys[phy->id].phy_desc;
|
|
struct asd_ascb *ascb;
|
|
struct sas_phy_linkrates *rates;
|
|
int res = 1;
|
|
|
|
switch (func) {
|
|
case PHY_FUNC_CLEAR_ERROR_LOG:
|
|
case PHY_FUNC_GET_EVENTS:
|
|
return -ENOSYS;
|
|
case PHY_FUNC_SET_LINK_RATE:
|
|
rates = arg;
|
|
if (rates->minimum_linkrate) {
|
|
pd->min_sas_lrate = rates->minimum_linkrate;
|
|
pd->min_sata_lrate = rates->minimum_linkrate;
|
|
}
|
|
if (rates->maximum_linkrate) {
|
|
pd->max_sas_lrate = rates->maximum_linkrate;
|
|
pd->max_sata_lrate = rates->maximum_linkrate;
|
|
}
|
|
func = PHY_FUNC_LINK_RESET;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
|
|
if (!ascb)
|
|
return -ENOMEM;
|
|
|
|
asd_build_control_phy(ascb, phy->id, phy_func_table[func]);
|
|
res = asd_post_ascb_list(asd_ha, ascb , 1);
|
|
if (res)
|
|
asd_ascb_free(ascb);
|
|
|
|
return res;
|
|
}
|