--- /dev/null
+/*
+ * Aic94xx SAS/SATA driver SCB management.
+ *
+ * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
+ * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
+ *
+ * This file is licensed under GPLv2.
+ *
+ * This file is part of the aic94xx driver.
+ *
+ * The aic94xx driver is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of the
+ * License.
+ *
+ * The aic94xx driver is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the aic94xx driver; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#include <linux/pci.h>
+#include <scsi/scsi_host.h>
+
+#include "aic94xx.h"
+#include "aic94xx_reg.h"
+#include "aic94xx_hwi.h"
+#include "aic94xx_seq.h"
+
+#include "aic94xx_dump.h"
+
+/* ---------- EMPTY SCB ---------- */
+
+#define DL_PHY_MASK 7
+#define BYTES_DMAED 0
+#define PRIMITIVE_RECVD 0x08
+#define PHY_EVENT 0x10
+#define LINK_RESET_ERROR 0x18
+#define TIMER_EVENT 0x20
+#define REQ_TASK_ABORT 0xF0
+#define REQ_DEVICE_RESET 0xF1
+#define SIGNAL_NCQ_ERROR 0xF2
+#define CLEAR_NCQ_ERROR 0xF3
+
+#define PHY_EVENTS_STATUS (CURRENT_LOSS_OF_SIGNAL | CURRENT_OOB_DONE \
+ | CURRENT_SPINUP_HOLD | CURRENT_GTO_TIMEOUT \
+ | CURRENT_OOB_ERROR)
+
+static inline void get_lrate_mode(struct asd_phy *phy, u8 oob_mode)
+{
+ struct sas_phy *sas_phy = phy->sas_phy.phy;
+
+ switch (oob_mode & 7) {
+ case PHY_SPEED_60:
+ /* FIXME: sas transport class doesn't have this */
+ phy->sas_phy.linkrate = SAS_LINK_RATE_6_0_GBPS;
+ phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_6_0_GBPS;
+ break;
+ case PHY_SPEED_30:
+ phy->sas_phy.linkrate = SAS_LINK_RATE_3_0_GBPS;
+ phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
+ break;
+ case PHY_SPEED_15:
+ phy->sas_phy.linkrate = SAS_LINK_RATE_1_5_GBPS;
+ phy->sas_phy.phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS;
+ break;
+ }
+ sas_phy->negotiated_linkrate = phy->sas_phy.linkrate;
+ sas_phy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
+ sas_phy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
+ sas_phy->maximum_linkrate = phy->phy_desc->max_sas_lrate;
+ sas_phy->minimum_linkrate = phy->phy_desc->min_sas_lrate;
+
+ if (oob_mode & SAS_MODE)
+ phy->sas_phy.oob_mode = SAS_OOB_MODE;
+ else if (oob_mode & SATA_MODE)
+ phy->sas_phy.oob_mode = SATA_OOB_MODE;
+}
+
+static inline void asd_phy_event_tasklet(struct asd_ascb *ascb,
+ struct done_list_struct *dl)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
+ int phy_id = dl->status_block[0] & DL_PHY_MASK;
+ struct asd_phy *phy = &asd_ha->phys[phy_id];
+
+ u8 oob_status = dl->status_block[1] & PHY_EVENTS_STATUS;
+ u8 oob_mode = dl->status_block[2];
+
+ switch (oob_status) {
+ case CURRENT_LOSS_OF_SIGNAL:
+ /* directly attached device was removed */
+ ASD_DPRINTK("phy%d: device unplugged\n", phy_id);
+ asd_turn_led(asd_ha, phy_id, 0);
+ sas_phy_disconnected(&phy->sas_phy);
+ sas_ha->notify_phy_event(&phy->sas_phy, PHYE_LOSS_OF_SIGNAL);
+ break;
+ case CURRENT_OOB_DONE:
+ /* hot plugged device */
+ asd_turn_led(asd_ha, phy_id, 1);
+ get_lrate_mode(phy, oob_mode);
+ ASD_DPRINTK("phy%d device plugged: lrate:0x%x, proto:0x%x\n",
+ phy_id, phy->sas_phy.linkrate, phy->sas_phy.iproto);
+ sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_DONE);
+ break;
+ case CURRENT_SPINUP_HOLD:
+ /* hot plug SATA, no COMWAKE sent */
+ asd_turn_led(asd_ha, phy_id, 1);
+ sas_ha->notify_phy_event(&phy->sas_phy, PHYE_SPINUP_HOLD);
+ break;
+ case CURRENT_GTO_TIMEOUT:
+ case CURRENT_OOB_ERROR:
+ ASD_DPRINTK("phy%d error while OOB: oob status:0x%x\n", phy_id,
+ dl->status_block[1]);
+ asd_turn_led(asd_ha, phy_id, 0);
+ sas_phy_disconnected(&phy->sas_phy);
+ sas_ha->notify_phy_event(&phy->sas_phy, PHYE_OOB_ERROR);
+ break;
+ }
+}
+
+/* If phys are enabled sparsely, this will do the right thing. */
+static inline unsigned ord_phy(struct asd_ha_struct *asd_ha,
+ struct asd_phy *phy)
+{
+ u8 enabled_mask = asd_ha->hw_prof.enabled_phys;
+ int i, k = 0;
+
+ for_each_phy(enabled_mask, enabled_mask, i) {
+ if (&asd_ha->phys[i] == phy)
+ return k;
+ k++;
+ }
+ return 0;
+}
+
+/**
+ * asd_get_attached_sas_addr -- extract/generate attached SAS address
+ * phy: pointer to asd_phy
+ * sas_addr: pointer to buffer where the SAS address is to be written
+ *
+ * This function extracts the SAS address from an IDENTIFY frame
+ * received. If OOB is SATA, then a SAS address is generated from the
+ * HA tables.
+ *
+ * LOCKING: the frame_rcvd_lock needs to be held since this parses the frame
+ * buffer.
+ */
+static inline void asd_get_attached_sas_addr(struct asd_phy *phy, u8 *sas_addr)
+{
+ if (phy->sas_phy.frame_rcvd[0] == 0x34
+ && phy->sas_phy.oob_mode == SATA_OOB_MODE) {
+ struct asd_ha_struct *asd_ha = phy->sas_phy.ha->lldd_ha;
+ /* FIS device-to-host */
+ u64 addr = be64_to_cpu(*(__be64 *)phy->phy_desc->sas_addr);
+
+ addr += asd_ha->hw_prof.sata_name_base + ord_phy(asd_ha, phy);
+ *(__be64 *)sas_addr = cpu_to_be64(addr);
+ } else {
+ struct sas_identify_frame *idframe =
+ (void *) phy->sas_phy.frame_rcvd;
+ memcpy(sas_addr, idframe->sas_addr, SAS_ADDR_SIZE);
+ }
+}
+
+static void asd_form_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
+{
+ int i;
+ struct asd_port *free_port = NULL;
+ struct asd_port *port;
+ struct asd_sas_phy *sas_phy = &phy->sas_phy;
+ unsigned long flags;
+
+ spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
+ if (!phy->asd_port) {
+ for (i = 0; i < ASD_MAX_PHYS; i++) {
+ port = &asd_ha->asd_ports[i];
+
+ /* Check for wide port */
+ if (port->num_phys > 0 &&
+ memcmp(port->sas_addr, sas_phy->sas_addr,
+ SAS_ADDR_SIZE) == 0 &&
+ memcmp(port->attached_sas_addr,
+ sas_phy->attached_sas_addr,
+ SAS_ADDR_SIZE) == 0) {
+ break;
+ }
+
+ /* Find a free port */
+ if (port->num_phys == 0 && free_port == NULL) {
+ free_port = port;
+ }
+ }
+
+ /* Use a free port if this doesn't form a wide port */
+ if (i >= ASD_MAX_PHYS) {
+ port = free_port;
+ BUG_ON(!port);
+ memcpy(port->sas_addr, sas_phy->sas_addr,
+ SAS_ADDR_SIZE);
+ memcpy(port->attached_sas_addr,
+ sas_phy->attached_sas_addr,
+ SAS_ADDR_SIZE);
+ }
+ port->num_phys++;
+ port->phy_mask |= (1U << sas_phy->id);
+ phy->asd_port = port;
+ }
+ ASD_DPRINTK("%s: updating phy_mask 0x%x for phy%d\n",
+ __FUNCTION__, phy->asd_port->phy_mask, sas_phy->id);
+ asd_update_port_links(asd_ha, phy);
+ spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
+}
+
+static void asd_deform_port(struct asd_ha_struct *asd_ha, struct asd_phy *phy)
+{
+ struct asd_port *port = phy->asd_port;
+ struct asd_sas_phy *sas_phy = &phy->sas_phy;
+ unsigned long flags;
+
+ spin_lock_irqsave(&asd_ha->asd_ports_lock, flags);
+ if (port) {
+ port->num_phys--;
+ port->phy_mask &= ~(1U << sas_phy->id);
+ phy->asd_port = NULL;
+ }
+ spin_unlock_irqrestore(&asd_ha->asd_ports_lock, flags);
+}
+
+static inline void asd_bytes_dmaed_tasklet(struct asd_ascb *ascb,
+ struct done_list_struct *dl,
+ int edb_id, int phy_id)
+{
+ unsigned long flags;
+ int edb_el = edb_id + ascb->edb_index;
+ struct asd_dma_tok *edb = ascb->ha->seq.edb_arr[edb_el];
+ struct asd_phy *phy = &ascb->ha->phys[phy_id];
+ struct sas_ha_struct *sas_ha = phy->sas_phy.ha;
+ u16 size = ((dl->status_block[3] & 7) << 8) | dl->status_block[2];
+
+ size = min(size, (u16) sizeof(phy->frame_rcvd));
+
+ spin_lock_irqsave(&phy->sas_phy.frame_rcvd_lock, flags);
+ memcpy(phy->sas_phy.frame_rcvd, edb->vaddr, size);
+ phy->sas_phy.frame_rcvd_size = size;
+ asd_get_attached_sas_addr(phy, phy->sas_phy.attached_sas_addr);
+ spin_unlock_irqrestore(&phy->sas_phy.frame_rcvd_lock, flags);
+ asd_dump_frame_rcvd(phy, dl);
+ asd_form_port(ascb->ha, phy);
+ sas_ha->notify_port_event(&phy->sas_phy, PORTE_BYTES_DMAED);
+}
+
+static inline void asd_link_reset_err_tasklet(struct asd_ascb *ascb,
+ struct done_list_struct *dl,
+ int phy_id)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
+ struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
+ struct asd_phy *phy = &asd_ha->phys[phy_id];
+ u8 lr_error = dl->status_block[1];
+ u8 retries_left = dl->status_block[2];
+
+ switch (lr_error) {
+ case 0:
+ ASD_DPRINTK("phy%d: Receive ID timer expired\n", phy_id);
+ break;
+ case 1:
+ ASD_DPRINTK("phy%d: Loss of signal\n", phy_id);
+ break;
+ case 2:
+ ASD_DPRINTK("phy%d: Loss of dword sync\n", phy_id);
+ break;
+ case 3:
+ ASD_DPRINTK("phy%d: Receive FIS timeout\n", phy_id);
+ break;
+ default:
+ ASD_DPRINTK("phy%d: unknown link reset error code: 0x%x\n",
+ phy_id, lr_error);
+ break;
+ }
+
+ asd_turn_led(asd_ha, phy_id, 0);
+ sas_phy_disconnected(sas_phy);
+ asd_deform_port(asd_ha, phy);
+ sas_ha->notify_port_event(sas_phy, PORTE_LINK_RESET_ERR);
+
+ if (retries_left == 0) {
+ int num = 1;
+ struct asd_ascb *cp = asd_ascb_alloc_list(ascb->ha, &num,
+ GFP_ATOMIC);
+ if (!cp) {
+ asd_printk("%s: out of memory\n", __FUNCTION__);
+ goto out;
+ }
+ ASD_DPRINTK("phy%d: retries:0 performing link reset seq\n",
+ phy_id);
+ asd_build_control_phy(cp, phy_id, ENABLE_PHY);
+ if (asd_post_ascb_list(ascb->ha, cp, 1) != 0)
+ asd_ascb_free(cp);
+ }
+out:
+ ;
+}
+
+static inline void asd_primitive_rcvd_tasklet(struct asd_ascb *ascb,
+ struct done_list_struct *dl,
+ int phy_id)
+{
+ unsigned long flags;
+ struct sas_ha_struct *sas_ha = &ascb->ha->sas_ha;
+ struct asd_sas_phy *sas_phy = sas_ha->sas_phy[phy_id];
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct asd_phy *phy = &asd_ha->phys[phy_id];
+ u8 reg = dl->status_block[1];
+ u32 cont = dl->status_block[2] << ((reg & 3)*8);
+
+ reg &= ~3;
+ switch (reg) {
+ case LmPRMSTAT0BYTE0:
+ switch (cont) {
+ case LmBROADCH:
+ case LmBROADRVCH0:
+ case LmBROADRVCH1:
+ case LmBROADSES:
+ ASD_DPRINTK("phy%d: BROADCAST change received:%d\n",
+ phy_id, cont);
+ spin_lock_irqsave(&sas_phy->sas_prim_lock, flags);
+ sas_phy->sas_prim = ffs(cont);
+ spin_unlock_irqrestore(&sas_phy->sas_prim_lock, flags);
+ sas_ha->notify_port_event(sas_phy,PORTE_BROADCAST_RCVD);
+ break;
+
+ case LmUNKNOWNP:
+ ASD_DPRINTK("phy%d: unknown BREAK\n", phy_id);
+ break;
+
+ default:
+ ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
+ phy_id, reg, cont);
+ break;
+ }
+ break;
+ case LmPRMSTAT1BYTE0:
+ switch (cont) {
+ case LmHARDRST:
+ ASD_DPRINTK("phy%d: HARD_RESET primitive rcvd\n",
+ phy_id);
+ /* The sequencer disables all phys on that port.
+ * We have to re-enable the phys ourselves. */
+ asd_deform_port(asd_ha, phy);
+ sas_ha->notify_port_event(sas_phy, PORTE_HARD_RESET);
+ break;
+
+ default:
+ ASD_DPRINTK("phy%d: primitive reg:0x%x, cont:0x%04x\n",
+ phy_id, reg, cont);
+ break;
+ }
+ break;
+ default:
+ ASD_DPRINTK("unknown primitive register:0x%x\n",
+ dl->status_block[1]);
+ break;
+ }
+}
+
+/**
+ * asd_invalidate_edb -- invalidate an EDB and if necessary post the ESCB
+ * @ascb: pointer to Empty SCB
+ * @edb_id: index [0,6] to the empty data buffer which is to be invalidated
+ *
+ * After an EDB has been invalidated, if all EDBs in this ESCB have been
+ * invalidated, the ESCB is posted back to the sequencer.
+ * Context is tasklet/IRQ.
+ */
+void asd_invalidate_edb(struct asd_ascb *ascb, int edb_id)
+{
+ struct asd_seq_data *seq = &ascb->ha->seq;
+ struct empty_scb *escb = &ascb->scb->escb;
+ struct sg_el *eb = &escb->eb[edb_id];
+ struct asd_dma_tok *edb = seq->edb_arr[ascb->edb_index + edb_id];
+
+ memset(edb->vaddr, 0, ASD_EDB_SIZE);
+ eb->flags |= ELEMENT_NOT_VALID;
+ escb->num_valid--;
+
+ if (escb->num_valid == 0) {
+ int i;
+ /* ASD_DPRINTK("reposting escb: vaddr: 0x%p, "
+ "dma_handle: 0x%08llx, next: 0x%08llx, "
+ "index:%d, opcode:0x%02x\n",
+ ascb->dma_scb.vaddr,
+ (u64)ascb->dma_scb.dma_handle,
+ le64_to_cpu(ascb->scb->header.next_scb),
+ le16_to_cpu(ascb->scb->header.index),
+ ascb->scb->header.opcode);
+ */
+ escb->num_valid = ASD_EDBS_PER_SCB;
+ for (i = 0; i < ASD_EDBS_PER_SCB; i++)
+ escb->eb[i].flags = 0;
+ if (!list_empty(&ascb->list))
+ list_del_init(&ascb->list);
+ i = asd_post_escb_list(ascb->ha, ascb, 1);
+ if (i)
+ asd_printk("couldn't post escb, err:%d\n", i);
+ }
+}
+
+/* hard reset a phy later */
+static void do_phy_reset_later(struct work_struct *work)
+{
+ struct sas_phy *sas_phy =
+ container_of(work, struct sas_phy, reset_work);
+ int error;
+
+ ASD_DPRINTK("%s: About to hard reset phy %d\n", __FUNCTION__,
+ sas_phy->identify.phy_identifier);
+ /* Reset device port */
+ error = sas_phy_reset(sas_phy, 1);
+ if (error)
+ ASD_DPRINTK("%s: Hard reset of phy %d failed (%d).\n",
+ __FUNCTION__, sas_phy->identify.phy_identifier, error);
+}
+
+static void phy_reset_later(struct sas_phy *sas_phy, struct Scsi_Host *shost)
+{
+ INIT_WORK(&sas_phy->reset_work, do_phy_reset_later);
+ queue_work(shost->work_q, &sas_phy->reset_work);
+}
+
+/* start up the ABORT TASK tmf... */
+static void task_kill_later(struct asd_ascb *ascb)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ struct sas_ha_struct *sas_ha = &asd_ha->sas_ha;
+ struct Scsi_Host *shost = sas_ha->core.shost;
+ struct sas_task *task = ascb->uldd_task;
+
+ INIT_WORK(&task->abort_work, sas_task_abort);
+ queue_work(shost->work_q, &task->abort_work);
+}
+
+static void escb_tasklet_complete(struct asd_ascb *ascb,
+ struct done_list_struct *dl)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ 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;
+
+ tc_abort = *((u16*)(&dl->status_block[1]));
+ tc_abort = le16_to_cpu(tc_abort);
+
+ ASD_DPRINTK("%s: REQ_TASK_ABORT, reason=0x%X\n",
+ __FUNCTION__, dl->status_block[3]);
+
+ /* Find the pending task and abort it. */
+ list_for_each_entry_safe(a, b, &asd_ha->seq.pend_q, list)
+ if (a->tc_index == tc_abort) {
+ task_kill_later(a);
+ break;
+ }
+ goto out;
+ }
+ case REQ_DEVICE_RESET: {
+ struct Scsi_Host *shost = sas_ha->core.shost;
+ struct sas_phy *dev_phy;
+ struct asd_ascb *a;
+ u16 conn_handle;
+
+ conn_handle = *((u16*)(&dl->status_block[1]));
+ conn_handle = le16_to_cpu(conn_handle);
+
+ ASD_DPRINTK("%s: REQ_DEVICE_RESET, reason=0x%X\n", __FUNCTION__,
+ dl->status_block[3]);
+
+ /* Kill all pending tasks and reset the device */
+ dev_phy = NULL;
+ list_for_each_entry(a, &asd_ha->seq.pend_q, list) {
+ struct sas_task *task;
+ struct domain_device *dev;
+ u16 x;
+
+ task = a->uldd_task;
+ if (!task)
+ continue;
+ dev = task->dev;
+
+ x = (unsigned long)dev->lldd_dev;
+ if (x == conn_handle) {
+ dev_phy = dev->port->phy;
+ task_kill_later(a);
+ }
+ }
+
+ /* Reset device port */
+ if (!dev_phy) {
+ ASD_DPRINTK("%s: No pending commands; can't reset.\n",
+ __FUNCTION__);
+ goto out;
+ }
+ phy_reset_later(dev_phy, shost);
+ goto out;
+ }
+ case SIGNAL_NCQ_ERROR:
+ ASD_DPRINTK("%s: SIGNAL_NCQ_ERROR\n", __FUNCTION__);
+ goto out;
+ case CLEAR_NCQ_ERROR:
+ ASD_DPRINTK("%s: CLEAR_NCQ_ERROR\n", __FUNCTION__);
+ goto out;
+ }
+
+ sb_opcode &= ~DL_PHY_MASK;
+
+ switch (sb_opcode) {
+ case BYTES_DMAED:
+ ASD_DPRINTK("%s: phy%d: BYTES_DMAED\n", __FUNCTION__, phy_id);
+ asd_bytes_dmaed_tasklet(ascb, dl, edb, phy_id);
+ break;
+ case PRIMITIVE_RECVD:
+ ASD_DPRINTK("%s: phy%d: PRIMITIVE_RECVD\n", __FUNCTION__,
+ phy_id);
+ asd_primitive_rcvd_tasklet(ascb, dl, phy_id);
+ break;
+ case PHY_EVENT:
+ ASD_DPRINTK("%s: phy%d: PHY_EVENT\n", __FUNCTION__, phy_id);
+ asd_phy_event_tasklet(ascb, dl);
+ break;
+ case LINK_RESET_ERROR:
+ ASD_DPRINTK("%s: phy%d: LINK_RESET_ERROR\n", __FUNCTION__,
+ 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",
+ __FUNCTION__, 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", __FUNCTION__,
+ 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",
+ __FUNCTION__, 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", __FUNCTION__, 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",
+ __FUNCTION__, 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", __FUNCTION__,
+ 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",
+ __FUNCTION__, 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",
+ __FUNCTION__, 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",
+ __FUNCTION__, 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", __FUNCTION__,
+ phy_id, control_phy->sub_func);
+ /* XXX finish */
+ break;
+ default:
+ ASD_DPRINTK("%s: phy%d: sub_func:0x%x?\n", __FUNCTION__,
+ phy_id, control_phy->sub_func);
+ break;
+ }
+out:
+ asd_ascb_free(ascb);
+}
+
+static inline 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_PROTO_ALL << 4;
+ else if (phy->sas_phy.role == PHY_ROLE_TARGET)
+ control_phy->port_type = SAS_PROTO_ALL;
+ else
+ control_phy->port_type =
+ (SAS_PROTO_ALL << 4) | SAS_PROTO_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 ---------- */
+
+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;
+}
+
+/* ---------- 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, data, expires} prior to calling the post
+ * funcion. The timer is started by the post function.
+ */
+void asd_ascb_timedout(unsigned long data)
+{
+ struct asd_ascb *ascb = (void *) data;
+ 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:
+ 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;
+}
git://git.onelab.eu / linux-2.6.git / blobdiff