/* fallthrough */
case OCT_DEV_IO_QUEUES_DONE:
- if (wait_for_pending_requests(oct))
- dev_err(&oct->pci_dev->dev, "There were pending requests\n");
-
if (lio_wait_for_instr_fetch(oct))
dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n");
+ if (wait_for_pending_requests(oct))
+ dev_err(&oct->pci_dev->dev, "There were pending requests\n");
+
/* Disable the input and output queues now. No more packets will
* arrive from Octeon, but we should wait for all packet
* processing to finish.
if (lio_wait_for_oq_pkts(oct))
dev_err(&oct->pci_dev->dev, "OQ had pending packets\n");
+ /* Force all requests waiting to be fetched by OCTEON to
+ * complete.
+ */
+ for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
+ struct octeon_instr_queue *iq;
+
+ if (!(oct->io_qmask.iq & BIT_ULL(i)))
+ continue;
+ iq = oct->instr_queue[i];
+
+ if (atomic_read(&iq->instr_pending)) {
+ spin_lock_bh(&iq->lock);
+ iq->fill_cnt = 0;
+ iq->octeon_read_index = iq->host_write_index;
+ iq->stats.instr_processed +=
+ atomic_read(&iq->instr_pending);
+ lio_process_iq_request_list(oct, iq, 0);
+ spin_unlock_bh(&iq->lock);
+ }
+ }
+
+ lio_process_ordered_list(oct, 1);
+ octeon_free_sc_done_list(oct);
+ octeon_free_sc_zombie_list(oct);
+
/* fallthrough */
case OCT_DEV_INTR_SET_DONE:
/* Disable interrupts */
case OCT_DEV_HOST_OK:
/* fallthrough */
case OCT_DEV_IO_QUEUES_DONE:
- if (wait_for_pending_requests(oct))
- dev_err(&oct->pci_dev->dev, "There were pending requests\n");
-
if (lio_wait_for_instr_fetch(oct))
dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n");
+ if (wait_for_pending_requests(oct))
+ dev_err(&oct->pci_dev->dev, "There were pending requests\n");
+
/* Disable the input and output queues now. No more packets will
* arrive from Octeon, but we should wait for all packet
* processing to finish.
if (lio_wait_for_oq_pkts(oct))
dev_err(&oct->pci_dev->dev, "OQ had pending packets\n");
- /* fall through */
+
+ /* Force all requests waiting to be fetched by OCTEON to
+ * complete.
+ */
+ for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
+ struct octeon_instr_queue *iq;
+
+ if (!(oct->io_qmask.iq & BIT_ULL(i)))
+ continue;
+ iq = oct->instr_queue[i];
+
+ if (atomic_read(&iq->instr_pending)) {
+ spin_lock_bh(&iq->lock);
+ iq->fill_cnt = 0;
+ iq->octeon_read_index = iq->host_write_index;
+ iq->stats.instr_processed +=
+ atomic_read(&iq->instr_pending);
+ lio_process_iq_request_list(oct, iq, 0);
+ spin_unlock_bh(&iq->lock);
+ }
+ }
+
+ lio_process_ordered_list(oct, 1);
+ octeon_free_sc_done_list(oct);
+ octeon_free_sc_zombie_list(oct);
+
+ /* fall through */
case OCT_DEV_INTR_SET_DONE:
/* Disable interrupts */
oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
/* Response lists - 1 ordered, 1 unordered-blocking, 1 unordered-nonblocking
* NoResponse Lists are now maintained with each IQ. (Dec' 2007).
*/
-#define MAX_RESPONSE_LISTS 4
+#define MAX_RESPONSE_LISTS 6
/* Opcode hash bits. The opcode is hashed on the lower 6-bits to lookup the
* dispatch table.
/** Time out and callback */
size_t wait_time;
size_t timeout;
+ size_t expiry_time;
+
u32 iq_no;
void (*callback)(struct octeon_device *, u32, void *);
void *callback_arg;
+
+ int caller_is_done;
+ u32 sc_status;
+ struct completion complete;
};
+/* max timeout (in milli sec) for soft request */
+#define LIO_SC_MAX_TMO_MS 60000
+
/** Maximum number of buffers to allocate into soft command buffer pool
*/
#define MAX_SOFT_COMMAND_BUFFERS 256
(((octeon_dev_ptr)->instr_queue[iq_no]->stats.field) += count)
int octeon_setup_sc_buffer_pool(struct octeon_device *oct);
+int octeon_free_sc_done_list(struct octeon_device *oct);
+int octeon_free_sc_zombie_list(struct octeon_device *oct);
int octeon_free_sc_buffer_pool(struct octeon_device *oct);
struct octeon_soft_command *
octeon_alloc_soft_command(struct octeon_device *oct,
else
sc->cmd.cmd2.rptr = sc->dmarptr;
- sc->wait_time = 1000;
- sc->timeout = jiffies + sc->wait_time;
+ sc->expiry_time = jiffies + msecs_to_jiffies(LIO_SC_MAX_TMO_MS);
return sc;
}
else
irh = (struct octeon_instr_irh *)
&sc->cmd.cmd2.irh;
- if (irh->rflag) {
- /* We're expecting a response from Octeon.
- * It's up to lio_process_ordered_list() to
- * process sc. Add sc to the ordered soft
- * command response list because we expect
- * a response from Octeon.
- */
- spin_lock_irqsave
- (&oct->response_list
- [OCTEON_ORDERED_SC_LIST].lock,
- flags);
- atomic_inc(&oct->response_list
- [OCTEON_ORDERED_SC_LIST].
- pending_req_count);
- list_add_tail(&sc->node, &oct->response_list
- [OCTEON_ORDERED_SC_LIST].head);
- spin_unlock_irqrestore
- (&oct->response_list
- [OCTEON_ORDERED_SC_LIST].lock,
- flags);
- } else {
- if (sc->callback) {
- /* This callback must not sleep */
- sc->callback(oct, OCTEON_REQUEST_DONE,
- sc->callback_arg);
- }
- }
+
+ /* We're expecting a response from Octeon.
+ * It's up to lio_process_ordered_list() to
+ * process sc. Add sc to the ordered soft
+ * command response list because we expect
+ * a response from Octeon.
+ */
+ spin_lock_irqsave(&oct->response_list
+ [OCTEON_ORDERED_SC_LIST].lock, flags);
+ atomic_inc(&oct->response_list
+ [OCTEON_ORDERED_SC_LIST].pending_req_count);
+ list_add_tail(&sc->node, &oct->response_list
+ [OCTEON_ORDERED_SC_LIST].head);
+ spin_unlock_irqrestore(&oct->response_list
+ [OCTEON_ORDERED_SC_LIST].lock,
+ flags);
break;
default:
dev_err(&oct->pci_dev->dev,
len = (u32)ih2->dlengsz;
}
- if (sc->wait_time)
- sc->timeout = jiffies + sc->wait_time;
+ sc->expiry_time = jiffies + msecs_to_jiffies(LIO_SC_MAX_TMO_MS);
return (octeon_send_command(oct, sc->iq_no, 1, &sc->cmd, sc,
len, REQTYPE_SOFT_COMMAND));
return 0;
}
+int octeon_free_sc_done_list(struct octeon_device *oct)
+{
+ struct octeon_response_list *done_sc_list, *zombie_sc_list;
+ struct octeon_soft_command *sc;
+ struct list_head *tmp, *tmp2;
+ spinlock_t *sc_lists_lock; /* lock for response_list */
+
+ done_sc_list = &oct->response_list[OCTEON_DONE_SC_LIST];
+ zombie_sc_list = &oct->response_list[OCTEON_ZOMBIE_SC_LIST];
+
+ if (!atomic_read(&done_sc_list->pending_req_count))
+ return 0;
+
+ sc_lists_lock = &oct->response_list[OCTEON_ORDERED_SC_LIST].lock;
+
+ spin_lock_bh(sc_lists_lock);
+
+ list_for_each_safe(tmp, tmp2, &done_sc_list->head) {
+ sc = list_entry(tmp, struct octeon_soft_command, node);
+
+ if (READ_ONCE(sc->caller_is_done)) {
+ list_del(&sc->node);
+ atomic_dec(&done_sc_list->pending_req_count);
+
+ if (*sc->status_word == COMPLETION_WORD_INIT) {
+ /* timeout; move sc to zombie list */
+ list_add_tail(&sc->node, &zombie_sc_list->head);
+ atomic_inc(&zombie_sc_list->pending_req_count);
+ } else {
+ octeon_free_soft_command(oct, sc);
+ }
+ }
+ }
+
+ spin_unlock_bh(sc_lists_lock);
+
+ return 0;
+}
+
+int octeon_free_sc_zombie_list(struct octeon_device *oct)
+{
+ struct octeon_response_list *zombie_sc_list;
+ struct octeon_soft_command *sc;
+ struct list_head *tmp, *tmp2;
+ spinlock_t *sc_lists_lock; /* lock for response_list */
+
+ zombie_sc_list = &oct->response_list[OCTEON_ZOMBIE_SC_LIST];
+ sc_lists_lock = &oct->response_list[OCTEON_ORDERED_SC_LIST].lock;
+
+ spin_lock_bh(sc_lists_lock);
+
+ list_for_each_safe(tmp, tmp2, &zombie_sc_list->head) {
+ list_del(tmp);
+ atomic_dec(&zombie_sc_list->pending_req_count);
+ sc = list_entry(tmp, struct octeon_soft_command, node);
+ octeon_free_soft_command(oct, sc);
+ }
+
+ spin_unlock_bh(sc_lists_lock);
+
+ return 0;
+}
+
int octeon_free_sc_buffer_pool(struct octeon_device *oct)
{
struct list_head *tmp, *tmp2;
struct octeon_soft_command *sc;
+ octeon_free_sc_zombie_list(oct);
+
spin_lock_bh(&oct->sc_buf_pool.lock);
list_for_each_safe(tmp, tmp2, &oct->sc_buf_pool.head) {
struct octeon_soft_command *sc = NULL;
struct list_head *tmp;
+ if (!rdatasize)
+ rdatasize = 16;
+
WARN_ON((offset + datasize + rdatasize + ctxsize) >
SOFT_COMMAND_BUFFER_SIZE);
u32 status;
u64 status64;
+ octeon_free_sc_done_list(octeon_dev);
+
ordered_sc_list = &octeon_dev->response_list[OCTEON_ORDERED_SC_LIST];
do {
}
}
}
- } else if (force_quit || (sc->timeout &&
- time_after(jiffies, (unsigned long)sc->timeout))) {
- dev_err(&octeon_dev->pci_dev->dev, "%s: cmd failed, timeout (%ld, %ld)\n",
- __func__, (long)jiffies, (long)sc->timeout);
+ } else if (unlikely(force_quit) || (sc->expiry_time &&
+ time_after(jiffies, (unsigned long)sc->expiry_time))) {
+ struct octeon_instr_irh *irh =
+ (struct octeon_instr_irh *)&sc->cmd.cmd3.irh;
+
+ dev_err(&octeon_dev->pci_dev->dev, "%s: ", __func__);
+ dev_err(&octeon_dev->pci_dev->dev,
+ "cmd %x/%x/%llx/%llx failed, ",
+ irh->opcode, irh->subcode,
+ sc->cmd.cmd3.ossp[0], sc->cmd.cmd3.ossp[1]);
+ dev_err(&octeon_dev->pci_dev->dev,
+ "timeout (%ld, %ld)\n",
+ (long)jiffies, (long)sc->expiry_time);
status = OCTEON_REQUEST_TIMEOUT;
}
if (status != OCTEON_REQUEST_PENDING) {
+ sc->sc_status = status;
+
/* we have received a response or we have timed out */
/* remove node from linked list */
list_del(&sc->node);
atomic_dec(&octeon_dev->response_list
- [OCTEON_ORDERED_SC_LIST].
- pending_req_count);
- spin_unlock_bh
- (&ordered_sc_list->lock);
+ [OCTEON_ORDERED_SC_LIST].
+ pending_req_count);
+
+ if (!sc->callback) {
+ atomic_inc(&octeon_dev->response_list
+ [OCTEON_DONE_SC_LIST].
+ pending_req_count);
+ list_add_tail(&sc->node,
+ &octeon_dev->response_list
+ [OCTEON_DONE_SC_LIST].head);
+
+ if (unlikely(READ_ONCE(sc->caller_is_done))) {
+ /* caller does not wait for response
+ * from firmware
+ */
+ if (status != OCTEON_REQUEST_DONE) {
+ struct octeon_instr_irh *irh;
+
+ irh =
+ (struct octeon_instr_irh *)
+ &sc->cmd.cmd3.irh;
+ dev_dbg
+ (&octeon_dev->pci_dev->dev,
+ "%s: sc failed: opcode=%x, ",
+ __func__, irh->opcode);
+ dev_dbg
+ (&octeon_dev->pci_dev->dev,
+ "subcode=%x, ossp[0]=%llx, ",
+ irh->subcode,
+ sc->cmd.cmd3.ossp[0]);
+ dev_dbg
+ (&octeon_dev->pci_dev->dev,
+ "ossp[1]=%llx, status=%d\n",
+ sc->cmd.cmd3.ossp[1],
+ status);
+ }
+ } else {
+ complete(&sc->complete);
+ }
+
+ spin_unlock_bh(&ordered_sc_list->lock);
+ } else {
+ /* sc with callback function */
+ if (status == OCTEON_REQUEST_TIMEOUT) {
+ atomic_inc(&octeon_dev->response_list
+ [OCTEON_ZOMBIE_SC_LIST].
+ pending_req_count);
+ list_add_tail(&sc->node,
+ &octeon_dev->response_list
+ [OCTEON_ZOMBIE_SC_LIST].
+ head);
+ }
+
+ spin_unlock_bh(&ordered_sc_list->lock);
- if (sc->callback)
sc->callback(octeon_dev, status,
sc->callback_arg);
+ /* sc is freed by caller */
+ }
request_complete++;
OCTEON_ORDERED_LIST = 0,
OCTEON_UNORDERED_NONBLOCKING_LIST = 1,
OCTEON_UNORDERED_BLOCKING_LIST = 2,
- OCTEON_ORDERED_SC_LIST = 3
+ OCTEON_ORDERED_SC_LIST = 3,
+ OCTEON_DONE_SC_LIST = 4,
+ OCTEON_ZOMBIE_SC_LIST = 5
};
/** Response Order values for a Octeon Request. */
projects / platform / kernel / linux-rpi.git / commitdiff