static void mvs_int_sata(struct mvs_info *mvi)
{
- /* FIXME */
+ u32 tmp;
+ void __iomem *regs = mvi->regs;
+ tmp = mr32(INT_STAT_SRS);
+ mw32(INT_STAT_SRS, tmp & 0xFFFF);
+}
+
+static void mvs_slot_reset(struct mvs_info *mvi, struct sas_task *task,
+ u32 slot_idx)
+{
+ void __iomem *regs = mvi->regs;
+ struct domain_device *dev = task->dev;
+ struct asd_sas_port *sas_port = dev->port;
+ struct mvs_port *port = mvi->slot_info[slot_idx].port;
+ u32 reg_set, phy_mask;
+
+ if (!sas_protocol_ata(task->task_proto)) {
+ reg_set = 0;
+ phy_mask = (port->wide_port_phymap) ? port->wide_port_phymap :
+ sas_port->phy_mask;
+ } else {
+ reg_set = port->taskfileset;
+ phy_mask = sas_port->phy_mask;
+ }
+ mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | slot_idx |
+ (TXQ_CMD_SLOT_RESET << TXQ_CMD_SHIFT) |
+ (phy_mask << TXQ_PHY_SHIFT) |
+ (reg_set << TXQ_SRS_SHIFT));
+
+ mw32(TX_PROD_IDX, mvi->tx_prod);
+ mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
}
-static void mvs_slot_free(struct mvs_info *mvi, struct sas_task *task,
+static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
+ u32 slot_idx, int err)
+{
+ struct mvs_port *port = mvi->slot_info[slot_idx].port;
+ struct task_status_struct *tstat = &task->task_status;
+ struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
+ int stat = SAM_GOOD;
+
+ resp->frame_len = sizeof(struct dev_to_host_fis);
+ memcpy(&resp->ending_fis[0],
+ SATA_RECEIVED_D2H_FIS(port->taskfileset),
+ sizeof(struct dev_to_host_fis));
+ tstat->buf_valid_size = sizeof(*resp);
+ if (unlikely(err))
+ stat = SAS_PROTO_RESPONSE;
+ return stat;
+}
+
+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 (!sas_protocol_ata(task->task_proto))
/* do nothing */
break;
}
-
+ list_del(&slot->list);
+ task->lldd_task = NULL;
slot->task = NULL;
- mvs_tag_clear(mvi, slot_idx);
+ slot->port = NULL;
}
-static void mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
+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];
- u64 err_dw0 = *(u32 *) slot->response;
- void __iomem *regs = mvi->regs;
- u32 tmp;
+ u32 err_dw0 = le32_to_cpu(*(u32 *) (slot->response));
+ u32 err_dw1 = le32_to_cpu(*(u32 *) (slot->response + 4));
+ int stat = SAM_CHECK_COND;
- if (err_dw0 & CMD_ISS_STPD)
- if (sas_protocol_ata(task->task_proto)) {
- tmp = mr32(INT_STAT_SRS);
- mw32(INT_STAT_SRS, tmp & 0xFFFF);
- }
+ if (err_dw1 & SLOT_BSY_ERR) {
+ stat = SAS_QUEUE_FULL;
+ mvs_slot_reset(mvi, task, slot_idx);
+ }
+ switch (task->task_proto) {
+ case SAS_PROTOCOL_SSP:
+ break;
+ case SAS_PROTOCOL_SMP:
+ break;
+ case SAS_PROTOCOL_SATA:
+ case SAS_PROTOCOL_STP:
+ case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
+ if (err_dw0 & TFILE_ERR)
+ stat = mvs_sata_done(mvi, task, slot_idx, 1);
+ break;
+ default:
+ break;
+ }
- mvs_hba_sb_dump(mvi, slot_idx, task->task_proto);
+ mvs_hexdump(16, (u8 *) slot->response, 0);
+ return stat;
}
-static int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc)
+static 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 task_status_struct *tstat = &task->task_status;
- struct mvs_port *port = &mvi->port[task->dev->port->id];
+ struct task_status_struct *tstat;
+ struct mvs_port *port;
bool aborted;
void *to;
+ if (unlikely(!task || !task->lldd_task))
+ return -1;
+
+ mvs_hba_cq_dump(mvi);
+
spin_lock(&task->task_state_lock);
aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
if (!aborted) {
}
spin_unlock(&task->task_state_lock);
- if (aborted)
+ if (aborted) {
+ mvs_slot_task_free(mvi, task, slot, slot_idx);
+ mvs_slot_free(mvi, rx_desc);
return -1;
+ }
+ port = slot->port;
+ tstat = &task->task_status;
memset(tstat, 0, sizeof(*tstat));
tstat->resp = SAS_TASK_COMPLETE;
-
- if (unlikely(!port->port_attached)) {
- tstat->stat = SAS_PHY_DOWN;
+ if (unlikely(!port->port_attached || flags)) {
+ mvs_slot_err(mvi, task, slot_idx);
+ if (!sas_protocol_ata(task->task_proto))
+ tstat->stat = SAS_PHY_DOWN;
goto out;
}
/* error info record present */
- if ((rx_desc & RXQ_ERR) && (*(u64 *) slot->response)) {
- tstat->stat = SAM_CHECK_COND;
- mvs_slot_err(mvi, task, slot_idx);
+ if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
+ tstat->stat = mvs_slot_err(mvi, task, slot_idx);
goto out;
}
case SAS_PROTOCOL_SATA:
case SAS_PROTOCOL_STP:
case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
- struct ata_task_resp *resp =
- (struct ata_task_resp *)tstat->buf;
-
- if ((rx_desc & (RXQ_DONE | RXQ_ERR | RXQ_ATTN)) ==
- RXQ_DONE)
- tstat->stat = SAM_GOOD;
- else
- tstat->stat = SAM_CHECK_COND;
-
- resp->frame_len = sizeof(struct dev_to_host_fis);
- memcpy(&resp->ending_fis[0],
- SATA_RECEIVED_D2H_FIS(port->taskfileset),
- sizeof(struct dev_to_host_fis));
- if (resp->ending_fis[2] & ATA_ERR)
- mvs_hexdump(16, resp->ending_fis, 0);
+ tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
break;
}
}
out:
- mvs_slot_free(mvi, task, slot, slot_idx);
+ mvs_slot_task_free(mvi, task, slot, slot_idx);
+ if (unlikely(tstat->stat != SAS_QUEUE_FULL))
+ mvs_slot_free(mvi, rx_desc);
+
+ spin_unlock(&mvi->lock);
task->task_done(task);
+ spin_lock(&mvi->lock);
return tstat->stat;
}
+static void mvs_release_task(struct mvs_info *mvi, int phy_no)
+{
+ struct list_head *pos, *n;
+ struct mvs_slot_info *slot;
+ struct mvs_phy *phy = &mvi->phy[phy_no];
+ struct mvs_port *port = phy->port;
+ u32 rx_desc;
+
+ if (!port)
+ return;
+
+ list_for_each_safe(pos, n, &port->list) {
+ slot = container_of(pos, struct mvs_slot_info, list);
+ rx_desc = (u32) (slot - mvi->slot_info);
+ mvs_slot_complete(mvi, rx_desc, 1);
+ }
+}
+
static void mvs_int_full(struct mvs_info *mvi)
{
void __iomem *regs = mvi->regs;
* 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 = mr32(RX_CONS_IDX) & RX_RING_SZ_MASK;
- if (rx_prod_idx == 0xfff) { /* h/w hasn't touched RX ring yet */
- mvi->rx_cons = 0xfff;
+ 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 (mvi->rx_cons == rx_prod_idx)
- return 0;
+ mvi->rx_cons = mr32(RX_CONS_IDX) & RX_RING_SZ_MASK;
- if (mvi->rx_cons == 0xfff)
- mvi->rx_cons = MVS_RX_RING_SZ - 1;
+ if (mvi->rx_cons == rx_prod_idx)
+ return 0;
while (mvi->rx_cons != rx_prod_idx) {
/* increment our internal RX consumer pointer */
- mvi->rx_cons = (mvi->rx_cons + 1) & (MVS_RX_RING_SZ - 1);
-
- rx_desc = le32_to_cpu(mvi->rx[mvi->rx_cons + 1]);
+ rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
- mvs_hba_cq_dump(mvi);
+ rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
if (likely(rx_desc & RXQ_DONE))
- mvs_slot_complete(mvi, rx_desc);
+ mvs_slot_complete(mvi, rx_desc, 0);
if (rx_desc & RXQ_ATTN) {
attn = true;
dev_printk(KERN_DEBUG, &pdev->dev, "ATTN %X\n",
rx_desc);
} else if (rx_desc & RXQ_ERR) {
+ if (!(rx_desc & RXQ_DONE))
+ mvs_slot_complete(mvi, rx_desc, 0);
dev_printk(KERN_DEBUG, &pdev->dev, "RXQ_ERR %X\n",
rx_desc);
+ } else if (rx_desc & RXQ_SLOT_RESET) {
+ dev_printk(KERN_DEBUG, &pdev->dev, "Slot reset[%X]\n",
+ rx_desc);
+ mvs_slot_free(mvi, rx_desc);
}
}
return 0;
}
+#ifdef MVS_USE_TASKLET
+static void mvs_tasklet(unsigned long data)
+{
+ struct mvs_info *mvi = (struct mvs_info *) data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mvi->lock, flags);
+
+#ifdef MVS_DISABLE_MSI
+ mvs_int_full(mvi);
+#else
+ mvs_int_rx(mvi, true);
+#endif
+ spin_unlock_irqrestore(&mvi->lock, flags);
+}
+#endif
+
static irqreturn_t mvs_interrupt(int irq, void *opaque)
{
struct mvs_info *mvi = opaque;
stat = mr32(GBL_INT_STAT);
- /* clear CMD_CMPLT ASAP */
- mw32_f(INT_STAT, CINT_DONE);
-
if (stat == 0 || stat == 0xffffffff)
return IRQ_NONE;
+ /* clear CMD_CMPLT ASAP */
+ mw32_f(INT_STAT, CINT_DONE);
+
+#ifndef MVS_USE_TASKLET
spin_lock(&mvi->lock);
mvs_int_full(mvi);
spin_unlock(&mvi->lock);
-
+#else
+ tasklet_schedule(&mvi->tasklet);
+#endif
return IRQ_HANDLED;
}
{
struct mvs_info *mvi = opaque;
+#ifndef MVS_USE_TASKLET
spin_lock(&mvi->lock);
mvs_int_rx(mvi, true);
spin_unlock(&mvi->lock);
-
+#else
+ tasklet_schedule(&mvi->tasklet);
+#endif
return IRQ_HANDLED;
}
#endif
git.samba.org / sfrench / cifs-2.6.git / blobdiff