/**
* i40e_diag_reg_pattern_test
* @hw: pointer to the hw struct
* @reg: reg to be tested
* @mask: bits to be touched
**/
static i40e_status i40e_diag_reg_pattern_test(struct i40e_hw *hw,
u32 reg, u32 mask)
{
static const u32 patterns[] = {
0x5A5A5A5A, 0xA5A5A5A5, 0x00000000, 0xFFFFFFFF
};
u32 pat, val, orig_val;
int i;
orig_val = rd32(hw, reg);
for (i = 0; i < ARRAY_SIZE(patterns); i++) {
pat = patterns[i];
wr32(hw, reg, (pat & mask));
val = rd32(hw, reg);
if ((val & mask) != (pat & mask)) {
i40e_debug(hw, I40E_DEBUG_DIAG,
"%s: reg pattern test failed - reg 0x%08x pat 0x%08x val 0x%08x\n",
__func__, reg, pat, val);
return I40E_ERR_DIAG_TEST_FAILED;
}
}
wr32(hw, reg, orig_val);
val = rd32(hw, reg);
if (val != orig_val) {
i40e_debug(hw, I40E_DEBUG_DIAG,
"%s: reg restore test failed - reg 0x%08x orig_val 0x%08x val 0x%08x\n",
__func__, reg, orig_val, val);
return I40E_ERR_DIAG_TEST_FAILED;
}
return 0;
}
/**
* i40e_clean_asq - cleans Admin send queue
* @hw: pointer to the hardware structure
*
* returns the number of free desc
**/
u16 i40e_clean_asq(struct i40e_hw *hw)
{
struct i40e_adminq_ring *asq = &(hw->aq.asq);
struct i40e_asq_cmd_details *details;
u16 ntc = asq->next_to_clean;
struct i40e_aq_desc desc_cb;
struct i40e_aq_desc *desc;
desc = I40E_ADMINQ_DESC(*asq, ntc);
details = I40E_ADMINQ_DETAILS(*asq, ntc);
while (rd32(hw, hw->aq.asq.head) != ntc) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
if (details->callback) {
I40E_ADMINQ_CALLBACK cb_func =
(I40E_ADMINQ_CALLBACK)details->callback;
i40e_memcpy(&desc_cb, desc, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_DMA);
cb_func(hw, &desc_cb);
}
i40e_memset(desc, 0, sizeof(*desc), I40E_DMA_MEM);
i40e_memset(details, 0, sizeof(*details), I40E_NONDMA_MEM);
ntc++;
if (ntc == asq->count)
ntc = 0;
desc = I40E_ADMINQ_DESC(*asq, ntc);
details = I40E_ADMINQ_DETAILS(*asq, ntc);
}
asq->next_to_clean = ntc;
return I40E_DESC_UNUSED(asq);
}
/**
* i40evf_debug_aq
* @hw: debug mask related to admin queue
* @mask: debug mask
* @desc: pointer to admin queue descriptor
* @buffer: pointer to command buffer
* @buf_len: max length of buffer
*
* Dumps debug log about adminq command with descriptor contents.
**/
void i40evf_debug_aq(struct i40e_hw *hw, enum i40e_debug_mask mask, void *desc,
void *buffer, u16 buf_len)
{
struct i40e_aq_desc *aq_desc = (struct i40e_aq_desc *)desc;
u8 *buf = (u8 *)buffer;
if ((!(mask & hw->debug_mask)) || (desc == NULL))
return;
i40e_debug(hw, mask,
"AQ CMD: opcode 0x%04X, flags 0x%04X, datalen 0x%04X, retval 0x%04X\n",
le16_to_cpu(aq_desc->opcode),
le16_to_cpu(aq_desc->flags),
le16_to_cpu(aq_desc->datalen),
le16_to_cpu(aq_desc->retval));
i40e_debug(hw, mask, "\tcookie (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->cookie_high),
le32_to_cpu(aq_desc->cookie_low));
i40e_debug(hw, mask, "\tparam (0,1) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.internal.param0),
le32_to_cpu(aq_desc->params.internal.param1));
i40e_debug(hw, mask, "\taddr (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.external.addr_high),
le32_to_cpu(aq_desc->params.external.addr_low));
if ((buffer != NULL) && (aq_desc->datalen != 0)) {
u16 len = le16_to_cpu(aq_desc->datalen);
i40e_debug(hw, mask, "AQ CMD Buffer:\n");
if (buf_len < len)
len = buf_len;
/* write the full 16-byte chunks */
if (hw->debug_mask & mask) {
char prefix[20];
snprintf(prefix, 20,
"i40evf %02x:%02x.%x: \t0x",
hw->bus.bus_id,
hw->bus.device,
hw->bus.func);
print_hex_dump(KERN_INFO, prefix, DUMP_PREFIX_OFFSET,
16, 1, buf, len, false);
}
}
}
/**
* i40e_clean_asq - cleans Admin send queue
* @hw: pointer to the hardware structure
*
* returns the number of free desc
**/
u16 i40e_clean_asq(struct i40e_hw *hw)
{
#ifdef I40E_QV
struct i40e_aq_desc qv_desc = {0};
struct i40e_aq_desc *qv_desc_on_ring;
#endif /* I40E_QV */
struct i40e_adminq_ring *asq = &(hw->aq.asq);
struct i40e_asq_cmd_details *details;
u16 ntc = asq->next_to_clean;
struct i40e_aq_desc desc_cb;
struct i40e_aq_desc *desc;
desc = I40E_ADMINQ_DESC(*asq, ntc);
details = I40E_ADMINQ_DETAILS(*asq, ntc);
#ifdef I40E_QV
/* copy the descriptor from ring to userspace buffer */
i40e_memcpy(&qv_desc, desc, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
qv_desc_on_ring = desc;
desc = &qv_desc;
#endif /* I40E_QV */
while (rd32(hw, hw->aq.asq.head) != ntc) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"%s: ntc %d head %d.\n", __FUNCTION__, ntc,
rd32(hw, hw->aq.asq.head));
if (details->callback) {
I40E_ADMINQ_CALLBACK cb_func =
(I40E_ADMINQ_CALLBACK)details->callback;
i40e_memcpy(&desc_cb, desc,
sizeof(struct i40e_aq_desc), I40E_DMA_TO_DMA);
cb_func(hw, &desc_cb);
}
i40e_memset(desc, 0, sizeof(*desc), I40E_DMA_MEM);
i40e_memset(details, 0, sizeof(*details), I40E_NONDMA_MEM);
#ifdef I40E_QV
/* copy the descriptor from userspace buffer to ring */
i40e_memcpy(qv_desc_on_ring, desc,
sizeof(struct i40e_aq_desc), I40E_NONDMA_TO_DMA);
#endif /* I40E_QV */
ntc++;
if (ntc == asq->count)
ntc = 0;
desc = I40E_ADMINQ_DESC(*asq, ntc);
details = I40E_ADMINQ_DETAILS(*asq, ntc);
#ifdef I40E_QV
/* copy the descriptor from ring to userspace buffer */
i40e_memcpy(&qv_desc, desc, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
qv_desc_on_ring = desc;
desc = &qv_desc;
#endif /* I40E_QV */
}
asq->next_to_clean = ntc;
return I40E_DESC_UNUSED(asq);
}
/**
* i40evf_debug_aq
* @hw: debug mask related to admin queue
* @mask: debug mask
* @desc: pointer to admin queue descriptor
* @buffer: pointer to command buffer
* @buf_len: max length of buffer
*
* Dumps debug log about adminq command with descriptor contents.
**/
void i40evf_debug_aq(struct i40e_hw *hw, enum i40e_debug_mask mask, void *desc,
void *buffer, u16 buf_len)
{
struct i40e_aq_desc *aq_desc = (struct i40e_aq_desc *)desc;
u16 len = le16_to_cpu(aq_desc->datalen);
u8 *buf = (u8 *)buffer;
u16 i = 0;
if ((!(mask & hw->debug_mask)) || (desc == NULL))
return;
i40e_debug(hw, mask,
"AQ CMD: opcode 0x%04X, flags 0x%04X, datalen 0x%04X, retval 0x%04X\n",
le16_to_cpu(aq_desc->opcode),
le16_to_cpu(aq_desc->flags),
le16_to_cpu(aq_desc->datalen),
le16_to_cpu(aq_desc->retval));
i40e_debug(hw, mask, "\tcookie (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->cookie_high),
le32_to_cpu(aq_desc->cookie_low));
i40e_debug(hw, mask, "\tparam (0,1) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.internal.param0),
le32_to_cpu(aq_desc->params.internal.param1));
i40e_debug(hw, mask, "\taddr (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.external.addr_high),
le32_to_cpu(aq_desc->params.external.addr_low));
if ((buffer != NULL) && (aq_desc->datalen != 0)) {
i40e_debug(hw, mask, "AQ CMD Buffer:\n");
if (buf_len < len)
len = buf_len;
/* write the full 16-byte chunks */
for (i = 0; i < (len - 16); i += 16)
i40e_debug(hw, mask,
"\t0x%04X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n",
i, buf[i], buf[i + 1], buf[i + 2],
buf[i + 3], buf[i + 4], buf[i + 5],
buf[i + 6], buf[i + 7], buf[i + 8],
buf[i + 9], buf[i + 10], buf[i + 11],
buf[i + 12], buf[i + 13], buf[i + 14],
buf[i + 15]);
/* write whatever's left over without overrunning the buffer */
if (i < len) {
char d_buf[80];
int j = 0;
memset(d_buf, 0, sizeof(d_buf));
j += sprintf(d_buf, "\t0x%04X ", i);
while (i < len)
j += sprintf(&d_buf[j], " %02X", buf[i++]);
i40e_debug(hw, mask, "%s\n", d_buf);
}
}
}
/**
* i40evf_debug_aq
* @hw: debug mask related to admin queue
* @mask: debug mask
* @desc: pointer to admin queue descriptor
* @buffer: pointer to command buffer
* @buf_len: max length of buffer
*
* Dumps debug log about adminq command with descriptor contents.
**/
void i40evf_debug_aq(struct i40e_hw *hw, enum i40e_debug_mask mask, void *desc,
void *buffer, u16 buf_len)
{
struct i40e_aq_desc *aq_desc = (struct i40e_aq_desc *)desc;
u16 len = le16_to_cpu(aq_desc->datalen);
u8 *aq_buffer = (u8 *)buffer;
u32 data[4];
u32 i = 0;
if ((!(mask & hw->debug_mask)) || (desc == NULL))
return;
i40e_debug(hw, mask,
"AQ CMD: opcode 0x%04X, flags 0x%04X, datalen 0x%04X, retval 0x%04X\n",
aq_desc->opcode, aq_desc->flags, aq_desc->datalen,
aq_desc->retval);
i40e_debug(hw, mask, "\tcookie (h,l) 0x%08X 0x%08X\n",
aq_desc->cookie_high, aq_desc->cookie_low);
i40e_debug(hw, mask, "\tparam (0,1) 0x%08X 0x%08X\n",
aq_desc->params.internal.param0,
aq_desc->params.internal.param1);
i40e_debug(hw, mask, "\taddr (h,l) 0x%08X 0x%08X\n",
aq_desc->params.external.addr_high,
aq_desc->params.external.addr_low);
if ((buffer != NULL) && (aq_desc->datalen != 0)) {
memset(data, 0, sizeof(data));
i40e_debug(hw, mask, "AQ CMD Buffer:\n");
if (buf_len < len)
len = buf_len;
for (i = 0; i < len; i++) {
data[((i % 16) / 4)] |=
((u32)aq_buffer[i]) << (8 * (i % 4));
if ((i % 16) == 15) {
i40e_debug(hw, mask,
"\t0x%04X %08X %08X %08X %08X\n",
i - 15, data[0], data[1], data[2],
data[3]);
memset(data, 0, sizeof(data));
}
}
if ((i % 16) != 0)
i40e_debug(hw, mask, "\t0x%04X %08X %08X %08X %08X\n",
i - (i % 16), data[0], data[1], data[2],
data[3]);
}
}
/**
* i40evf_debug_aq
* @hw: debug mask related to admin queue
* @mask: debug mask
* @desc: pointer to admin queue descriptor
* @buffer: pointer to command buffer
* @buf_len: max length of buffer
*
* Dumps debug log about adminq command with descriptor contents.
**/
void i40evf_debug_aq(struct i40e_hw *hw, enum i40e_debug_mask mask, void *desc,
void *buffer, u16 buf_len)
{
struct i40e_aq_desc *aq_desc = (struct i40e_aq_desc *)desc;
u16 len = le16_to_cpu(aq_desc->datalen);
u8 *buf = (u8 *)buffer;
u16 i = 0;
if ((!(mask & hw->debug_mask)) || (desc == NULL))
return;
i40e_debug(hw, mask,
"AQ CMD: opcode 0x%04X, flags 0x%04X, datalen 0x%04X, retval 0x%04X\n",
le16_to_cpu(aq_desc->opcode),
le16_to_cpu(aq_desc->flags),
le16_to_cpu(aq_desc->datalen),
le16_to_cpu(aq_desc->retval));
i40e_debug(hw, mask, "\tcookie (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->cookie_high),
le32_to_cpu(aq_desc->cookie_low));
i40e_debug(hw, mask, "\tparam (0,1) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.internal.param0),
le32_to_cpu(aq_desc->params.internal.param1));
i40e_debug(hw, mask, "\taddr (h,l) 0x%08X 0x%08X\n",
le32_to_cpu(aq_desc->params.external.addr_high),
le32_to_cpu(aq_desc->params.external.addr_low));
if ((buffer != NULL) && (aq_desc->datalen != 0)) {
i40e_debug(hw, mask, "AQ CMD Buffer:\n");
if (buf_len < len)
len = buf_len;
/* write the full 16-byte chunks */
for (i = 0; i < (len - 16); i += 16)
i40e_debug(hw, mask, "\t0x%04X %16ph\n", i, buf + i);
/* write whatever's left over without overrunning the buffer */
if (i < len)
i40e_debug(hw, mask, "\t0x%04X %*ph\n",
i, len - i, buf + i);
}
}
/**
* i40e_asq_send_command - send command to Admin Queue
* @hw: pointer to the hw struct
* @desc: prefilled descriptor describing the command (non DMA mem)
* @buff: buffer to use for indirect commands
* @buff_size: size of buffer for indirect commands
* @cmd_details: pointer to command details structure
*
* This is the main send command driver routine for the Admin Queue send
* queue. It runs the queue, cleans the queue, etc
**/
enum i40e_status_code i40e_asq_send_command(struct i40e_hw *hw,
struct i40e_aq_desc *desc,
void *buff, /* can be NULL */
u16 buff_size,
struct i40e_asq_cmd_details *cmd_details)
{
enum i40e_status_code status = I40E_SUCCESS;
struct i40e_dma_mem *dma_buff = NULL;
struct i40e_asq_cmd_details *details;
struct i40e_aq_desc *desc_on_ring;
bool cmd_completed = false;
u16 retval = 0;
u32 val = 0;
i40e_acquire_spinlock(&hw->aq.asq_spinlock);
hw->aq.asq_last_status = I40E_AQ_RC_OK;
if (hw->aq.asq.count == 0) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: Admin queue not initialized.\n");
status = I40E_ERR_QUEUE_EMPTY;
goto asq_send_command_error;
}
val = rd32(hw, hw->aq.asq.head);
if (val >= hw->aq.num_asq_entries) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: head overrun at %d\n", val);
status = I40E_ERR_QUEUE_EMPTY;
goto asq_send_command_error;
}
details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use);
if (cmd_details) {
i40e_memcpy(details,
cmd_details,
sizeof(struct i40e_asq_cmd_details),
I40E_NONDMA_TO_NONDMA);
/* If the cmd_details are defined copy the cookie. The
* CPU_TO_LE32 is not needed here because the data is ignored
* by the FW, only used by the driver
*/
if (details->cookie) {
desc->cookie_high =
CPU_TO_LE32(I40E_HI_DWORD(details->cookie));
desc->cookie_low =
CPU_TO_LE32(I40E_LO_DWORD(details->cookie));
}
} else {
i40e_memset(details, 0,
sizeof(struct i40e_asq_cmd_details),
I40E_NONDMA_MEM);
}
/* clear requested flags and then set additional flags if defined */
desc->flags &= ~CPU_TO_LE16(details->flags_dis);
desc->flags |= CPU_TO_LE16(details->flags_ena);
if (buff_size > hw->aq.asq_buf_size) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Invalid buffer size: %d.\n",
buff_size);
status = I40E_ERR_INVALID_SIZE;
goto asq_send_command_error;
}
if (details->postpone && !details->async) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Async flag not set along with postpone flag");
status = I40E_ERR_PARAM;
goto asq_send_command_error;
}
/* call clean and check queue available function to reclaim the
* descriptors that were processed by FW, the function returns the
* number of desc available
*/
/* the clean function called here could be called in a separate thread
* in case of asynchronous completions
*/
if (i40e_clean_asq(hw) == 0) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Error queue is full.\n");
status = I40E_ERR_ADMIN_QUEUE_FULL;
goto asq_send_command_error;
}
/* initialize the temp desc pointer with the right desc */
desc_on_ring = I40E_ADMINQ_DESC(hw->aq.asq, hw->aq.asq.next_to_use);
/* if the desc is available copy the temp desc to the right place */
i40e_memcpy(desc_on_ring, desc, sizeof(struct i40e_aq_desc),
I40E_NONDMA_TO_DMA);
/* if buff is not NULL assume indirect command */
if (buff != NULL) {
dma_buff = &(hw->aq.asq.r.asq_bi[hw->aq.asq.next_to_use]);
/* copy the user buff into the respective DMA buff */
i40e_memcpy(dma_buff->va, buff, buff_size,
I40E_NONDMA_TO_DMA);
desc_on_ring->datalen = CPU_TO_LE16(buff_size);
/* Update the address values in the desc with the pa value
* for respective buffer
*/
desc_on_ring->params.external.addr_high =
CPU_TO_LE32(I40E_HI_DWORD(dma_buff->pa));
desc_on_ring->params.external.addr_low =
CPU_TO_LE32(I40E_LO_DWORD(dma_buff->pa));
}
/* bump the tail */
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring,
buff, buff_size);
(hw->aq.asq.next_to_use)++;
if (hw->aq.asq.next_to_use == hw->aq.asq.count)
hw->aq.asq.next_to_use = 0;
if (!details->postpone)
wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
/* if cmd_details are not defined or async flag is not set,
* we need to wait for desc write back
*/
if (!details->async && !details->postpone) {
u32 total_delay = 0;
do {
/* AQ designers suggest use of head for better
* timing reliability than DD bit
*/
if (i40e_asq_done(hw))
break;
i40e_usec_delay(50);
total_delay += 50;
} while (total_delay < hw->aq.asq_cmd_timeout);
}
/* if ready, copy the desc back to temp */
if (i40e_asq_done(hw)) {
i40e_memcpy(desc, desc_on_ring, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
if (buff != NULL)
i40e_memcpy(buff, dma_buff->va, buff_size,
I40E_DMA_TO_NONDMA);
retval = LE16_TO_CPU(desc->retval);
if (retval != 0) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Command completed with error 0x%X.\n",
retval);
/* strip off FW internal code */
retval &= 0xff;
}
cmd_completed = true;
if ((enum i40e_admin_queue_err)retval == I40E_AQ_RC_OK)
status = I40E_SUCCESS;
else if ((enum i40e_admin_queue_err)retval == I40E_AQ_RC_EBUSY)
status = I40E_ERR_NOT_READY;
else
status = I40E_ERR_ADMIN_QUEUE_ERROR;
hw->aq.asq_last_status = (enum i40e_admin_queue_err)retval;
}
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: desc and buffer writeback:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff, buff_size);
/* save writeback aq if requested */
if (details->wb_desc)
i40e_memcpy(details->wb_desc, desc_on_ring,
sizeof(struct i40e_aq_desc), I40E_DMA_TO_NONDMA);
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
#ifdef PF_DRIVER
if (rd32(hw, hw->aq.asq.len) & I40E_GL_ATQLEN_ATQCRIT_MASK) {
#else
if (rd32(hw, hw->aq.asq.len) & I40E_VF_ATQLEN1_ATQCRIT_MASK) {
#endif
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: AQ Critical error.\n");
status = I40E_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
} else {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: Writeback timeout.\n");
status = I40E_ERR_ADMIN_QUEUE_TIMEOUT;
}
}
asq_send_command_error:
i40e_release_spinlock(&hw->aq.asq_spinlock);
return status;
}
/**
* i40e_fill_default_direct_cmd_desc - AQ descriptor helper function
* @desc: pointer to the temp descriptor (non DMA mem)
* @opcode: the opcode can be used to decide which flags to turn off or on
*
* Fill the desc with default values
**/
void i40e_fill_default_direct_cmd_desc(struct i40e_aq_desc *desc,
u16 opcode)
{
/* zero out the desc */
i40e_memset((void *)desc, 0, sizeof(struct i40e_aq_desc),
I40E_NONDMA_MEM);
desc->opcode = CPU_TO_LE16(opcode);
desc->flags = CPU_TO_LE16(I40E_AQ_FLAG_SI);
}
/**
* i40e_clean_arq_element
* @hw: pointer to the hw struct
* @e: event info from the receive descriptor, includes any buffers
* @pending: number of events that could be left to process
*
* This function cleans one Admin Receive Queue element and returns
* the contents through e. It can also return how many events are
* left to process through 'pending'
**/
enum i40e_status_code i40e_clean_arq_element(struct i40e_hw *hw,
struct i40e_arq_event_info *e,
u16 *pending)
{
enum i40e_status_code ret_code = I40E_SUCCESS;
u16 ntc = hw->aq.arq.next_to_clean;
struct i40e_aq_desc *desc;
struct i40e_dma_mem *bi;
u16 desc_idx;
u16 datalen;
u16 flags;
u16 ntu;
/* pre-clean the event info */
i40e_memset(&e->desc, 0, sizeof(e->desc), I40E_NONDMA_MEM);
/* take the lock before we start messing with the ring */
i40e_acquire_spinlock(&hw->aq.arq_spinlock);
if (hw->aq.arq.count == 0) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQRX: Admin queue not initialized.\n");
ret_code = I40E_ERR_QUEUE_EMPTY;
goto clean_arq_element_err;
}
/* set next_to_use to head */
#ifdef INTEGRATED_VF
if (!i40e_is_vf(hw))
ntu = rd32(hw, hw->aq.arq.head) & I40E_PF_ARQH_ARQH_MASK;
else
ntu = rd32(hw, hw->aq.arq.head) & I40E_VF_ARQH1_ARQH_MASK;
#else
#ifdef PF_DRIVER
ntu = rd32(hw, hw->aq.arq.head) & I40E_PF_ARQH_ARQH_MASK;
#endif /* PF_DRIVER */
#ifdef VF_DRIVER
ntu = rd32(hw, hw->aq.arq.head) & I40E_VF_ARQH1_ARQH_MASK;
#endif /* VF_DRIVER */
#endif /* INTEGRATED_VF */
if (ntu == ntc) {
/* nothing to do - shouldn't need to update ring's values */
ret_code = I40E_ERR_ADMIN_QUEUE_NO_WORK;
goto clean_arq_element_out;
}
/* now clean the next descriptor */
desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc);
desc_idx = ntc;
hw->aq.arq_last_status =
(enum i40e_admin_queue_err)LE16_TO_CPU(desc->retval);
flags = LE16_TO_CPU(desc->flags);
if (flags & I40E_AQ_FLAG_ERR) {
ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQRX: Event received with error 0x%X.\n",
hw->aq.arq_last_status);
}
i40e_memcpy(&e->desc, desc, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
datalen = LE16_TO_CPU(desc->datalen);
e->msg_len = min(datalen, e->buf_len);
if (e->msg_buf != NULL && (e->msg_len != 0))
i40e_memcpy(e->msg_buf,
hw->aq.arq.r.arq_bi[desc_idx].va,
e->msg_len, I40E_DMA_TO_NONDMA);
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf,
hw->aq.arq_buf_size);
/* Restore the original datalen and buffer address in the desc,
* FW updates datalen to indicate the event message
* size
*/
bi = &hw->aq.arq.r.arq_bi[ntc];
i40e_memset((void *)desc, 0, sizeof(struct i40e_aq_desc), I40E_DMA_MEM);
desc->flags = CPU_TO_LE16(I40E_AQ_FLAG_BUF);
if (hw->aq.arq_buf_size > I40E_AQ_LARGE_BUF)
desc->flags |= CPU_TO_LE16(I40E_AQ_FLAG_LB);
desc->datalen = CPU_TO_LE16((u16)bi->size);
desc->params.external.addr_high = CPU_TO_LE32(I40E_HI_DWORD(bi->pa));
desc->params.external.addr_low = CPU_TO_LE32(I40E_LO_DWORD(bi->pa));
/* set tail = the last cleaned desc index. */
wr32(hw, hw->aq.arq.tail, ntc);
/* ntc is updated to tail + 1 */
ntc++;
if (ntc == hw->aq.num_arq_entries)
ntc = 0;
hw->aq.arq.next_to_clean = ntc;
hw->aq.arq.next_to_use = ntu;
#ifdef PF_DRIVER
i40e_nvmupd_check_wait_event(hw, LE16_TO_CPU(e->desc.opcode), &e->desc);
#endif /* PF_DRIVER */
clean_arq_element_out:
/* Set pending if needed, unlock and return */
if (pending != NULL)
*pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc);
clean_arq_element_err:
i40e_release_spinlock(&hw->aq.arq_spinlock);
return ret_code;
}
/**
* i40e_clean_arq_element
* @hw: pointer to the hw struct
* @e: event info from the receive descriptor, includes any buffers
* @pending: number of events that could be left to process
*
* This function cleans one Admin Receive Queue element and returns
* the contents through e. It can also return how many events are
* left to process through 'pending'
**/
i40e_status i40e_clean_arq_element(struct i40e_hw *hw,
struct i40e_arq_event_info *e,
u16 *pending)
{
i40e_status ret_code = 0;
u16 ntc = hw->aq.arq.next_to_clean;
struct i40e_aq_desc *desc;
struct i40e_dma_mem *bi;
u16 desc_idx;
u16 datalen;
u16 flags;
u16 ntu;
/* pre-clean the event info */
memset(&e->desc, 0, sizeof(e->desc));
/* take the lock before we start messing with the ring */
mutex_lock(&hw->aq.arq_mutex);
if (hw->aq.arq.count == 0) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQRX: Admin queue not initialized.\n");
ret_code = I40E_ERR_QUEUE_EMPTY;
goto clean_arq_element_err;
}
/* set next_to_use to head */
ntu = rd32(hw, hw->aq.arq.head) & I40E_PF_ARQH_ARQH_MASK;
if (ntu == ntc) {
/* nothing to do - shouldn't need to update ring's values */
ret_code = I40E_ERR_ADMIN_QUEUE_NO_WORK;
goto clean_arq_element_out;
}
/* now clean the next descriptor */
desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc);
desc_idx = ntc;
hw->aq.arq_last_status =
(enum i40e_admin_queue_err)le16_to_cpu(desc->retval);
flags = le16_to_cpu(desc->flags);
if (flags & I40E_AQ_FLAG_ERR) {
ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQRX: Event received with error 0x%X.\n",
hw->aq.arq_last_status);
}
e->desc = *desc;
datalen = le16_to_cpu(desc->datalen);
e->msg_len = min(datalen, e->buf_len);
if (e->msg_buf != NULL && (e->msg_len != 0))
memcpy(e->msg_buf, hw->aq.arq.r.arq_bi[desc_idx].va,
e->msg_len);
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf,
hw->aq.arq_buf_size);
/* Restore the original datalen and buffer address in the desc,
* FW updates datalen to indicate the event message
* size
*/
bi = &hw->aq.arq.r.arq_bi[ntc];
memset((void *)desc, 0, sizeof(struct i40e_aq_desc));
desc->flags = cpu_to_le16(I40E_AQ_FLAG_BUF);
if (hw->aq.arq_buf_size > I40E_AQ_LARGE_BUF)
desc->flags |= cpu_to_le16(I40E_AQ_FLAG_LB);
desc->datalen = cpu_to_le16((u16)bi->size);
desc->params.external.addr_high = cpu_to_le32(upper_32_bits(bi->pa));
desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
/* set tail = the last cleaned desc index. */
wr32(hw, hw->aq.arq.tail, ntc);
/* ntc is updated to tail + 1 */
ntc++;
if (ntc == hw->aq.num_arq_entries)
ntc = 0;
hw->aq.arq.next_to_clean = ntc;
hw->aq.arq.next_to_use = ntu;
i40e_nvmupd_check_wait_event(hw, le16_to_cpu(e->desc.opcode), &e->desc);
clean_arq_element_out:
/* Set pending if needed, unlock and return */
if (pending)
*pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc);
clean_arq_element_err:
mutex_unlock(&hw->aq.arq_mutex);
return ret_code;
}
/**
* i40e_asq_send_command - send command to Admin Queue
* @hw: pointer to the hw struct
* @desc: prefilled descriptor describing the command (non DMA mem)
* @buff: buffer to use for indirect commands
* @buff_size: size of buffer for indirect commands
* @cmd_details: pointer to command details structure
*
* This is the main send command driver routine for the Admin Queue send
* queue. It runs the queue, cleans the queue, etc
**/
i40e_status i40e_asq_send_command(struct i40e_hw *hw,
struct i40e_aq_desc *desc,
void *buff, /* can be NULL */
u16 buff_size,
struct i40e_asq_cmd_details *cmd_details)
{
i40e_status status = 0;
struct i40e_dma_mem *dma_buff = NULL;
struct i40e_asq_cmd_details *details;
struct i40e_aq_desc *desc_on_ring;
bool cmd_completed = false;
u16 retval = 0;
u32 val = 0;
mutex_lock(&hw->aq.asq_mutex);
if (hw->aq.asq.count == 0) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: Admin queue not initialized.\n");
status = I40E_ERR_QUEUE_EMPTY;
goto asq_send_command_error;
}
hw->aq.asq_last_status = I40E_AQ_RC_OK;
val = rd32(hw, hw->aq.asq.head);
if (val >= hw->aq.num_asq_entries) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: head overrun at %d\n", val);
status = I40E_ERR_QUEUE_EMPTY;
goto asq_send_command_error;
}
details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use);
if (cmd_details) {
*details = *cmd_details;
/* If the cmd_details are defined copy the cookie. The
* cpu_to_le32 is not needed here because the data is ignored
* by the FW, only used by the driver
*/
if (details->cookie) {
desc->cookie_high =
cpu_to_le32(upper_32_bits(details->cookie));
desc->cookie_low =
cpu_to_le32(lower_32_bits(details->cookie));
}
} else {
memset(details, 0, sizeof(struct i40e_asq_cmd_details));
}
/* clear requested flags and then set additional flags if defined */
desc->flags &= ~cpu_to_le16(details->flags_dis);
desc->flags |= cpu_to_le16(details->flags_ena);
if (buff_size > hw->aq.asq_buf_size) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Invalid buffer size: %d.\n",
buff_size);
status = I40E_ERR_INVALID_SIZE;
goto asq_send_command_error;
}
if (details->postpone && !details->async) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Async flag not set along with postpone flag");
status = I40E_ERR_PARAM;
goto asq_send_command_error;
}
/* call clean and check queue available function to reclaim the
* descriptors that were processed by FW, the function returns the
* number of desc available
*/
/* the clean function called here could be called in a separate thread
* in case of asynchronous completions
*/
if (i40e_clean_asq(hw) == 0) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Error queue is full.\n");
status = I40E_ERR_ADMIN_QUEUE_FULL;
goto asq_send_command_error;
}
/* initialize the temp desc pointer with the right desc */
desc_on_ring = I40E_ADMINQ_DESC(hw->aq.asq, hw->aq.asq.next_to_use);
/* if the desc is available copy the temp desc to the right place */
*desc_on_ring = *desc;
/* if buff is not NULL assume indirect command */
if (buff != NULL) {
dma_buff = &(hw->aq.asq.r.asq_bi[hw->aq.asq.next_to_use]);
/* copy the user buff into the respective DMA buff */
memcpy(dma_buff->va, buff, buff_size);
desc_on_ring->datalen = cpu_to_le16(buff_size);
/* Update the address values in the desc with the pa value
* for respective buffer
*/
desc_on_ring->params.external.addr_high =
cpu_to_le32(upper_32_bits(dma_buff->pa));
desc_on_ring->params.external.addr_low =
cpu_to_le32(lower_32_bits(dma_buff->pa));
}
/* bump the tail */
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring,
buff, buff_size);
(hw->aq.asq.next_to_use)++;
if (hw->aq.asq.next_to_use == hw->aq.asq.count)
hw->aq.asq.next_to_use = 0;
if (!details->postpone)
wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
/* if cmd_details are not defined or async flag is not set,
* we need to wait for desc write back
*/
if (!details->async && !details->postpone) {
u32 total_delay = 0;
do {
/* AQ designers suggest use of head for better
* timing reliability than DD bit
*/
if (i40e_asq_done(hw))
break;
udelay(50);
total_delay += 50;
} while (total_delay < hw->aq.asq_cmd_timeout);
}
/* if ready, copy the desc back to temp */
if (i40e_asq_done(hw)) {
*desc = *desc_on_ring;
if (buff != NULL)
memcpy(buff, dma_buff->va, buff_size);
retval = le16_to_cpu(desc->retval);
if (retval != 0) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Command completed with error 0x%X.\n",
retval);
/* strip off FW internal code */
retval &= 0xff;
}
cmd_completed = true;
if ((enum i40e_admin_queue_err)retval == I40E_AQ_RC_OK)
status = 0;
else
status = I40E_ERR_ADMIN_QUEUE_ERROR;
hw->aq.asq_last_status = (enum i40e_admin_queue_err)retval;
}
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: desc and buffer writeback:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff, buff_size);
/* save writeback aq if requested */
if (details->wb_desc)
*details->wb_desc = *desc_on_ring;
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
if (rd32(hw, hw->aq.asq.len) & I40E_GL_ATQLEN_ATQCRIT_MASK) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: AQ Critical error.\n");
status = I40E_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
} else {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: Writeback timeout.\n");
status = I40E_ERR_ADMIN_QUEUE_TIMEOUT;
}
}
asq_send_command_error:
mutex_unlock(&hw->aq.asq_mutex);
return status;
}
/**
* i40e_asq_send_command - send command to Admin Queue
* @hw: pointer to the hw struct
* @desc: prefilled descriptor describing the command (non DMA mem)
* @buff: buffer to use for indirect commands
* @buff_size: size of buffer for indirect commands
* @cmd_details: pointer to command details structure
*
* This is the main send command driver routine for the Admin Queue send
* queue. It runs the queue, cleans the queue, etc
**/
enum i40e_status_code i40e_asq_send_command(struct i40e_hw *hw,
struct i40e_aq_desc *desc,
void *buff, /* can be NULL */
u16 buff_size,
struct i40e_asq_cmd_details *cmd_details)
{
#ifdef I40E_QV
struct i40e_aq_desc qv_desc = {0};
struct i40e_aq_desc *qv_desc_on_ring;
#endif /* I40E_QV */
enum i40e_status_code status = I40E_SUCCESS;
struct i40e_dma_mem *dma_buff = NULL;
struct i40e_asq_cmd_details *details;
struct i40e_aq_desc *desc_on_ring;
bool cmd_completed = FALSE;
u16 retval = 0;
u32 val = 0;
val = rd32(hw, hw->aq.asq.head);
if (val >= hw->aq.num_asq_entries) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: head overrun at %d\n", val);
status = I40E_ERR_QUEUE_EMPTY;
goto asq_send_command_exit;
}
if (hw->aq.asq.count == 0) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: Admin queue not initialized.\n");
status = I40E_ERR_QUEUE_EMPTY;
goto asq_send_command_exit;
}
if (i40e_is_nvm_update_op(desc) && hw->aq.nvm_busy) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: NVM busy.\n");
status = I40E_ERR_NVM;
goto asq_send_command_exit;
}
details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use);
if (cmd_details) {
i40e_memcpy(details,
cmd_details,
sizeof(struct i40e_asq_cmd_details),
I40E_NONDMA_TO_NONDMA);
/* If the cmd_details are defined copy the cookie. The
* CPU_TO_LE32 is not needed here because the data is ignored
* by the FW, only used by the driver
*/
if (details->cookie) {
desc->cookie_high =
CPU_TO_LE32(I40E_HI_DWORD(details->cookie));
desc->cookie_low =
CPU_TO_LE32(I40E_LO_DWORD(details->cookie));
}
} else {
i40e_memset(details, 0,
sizeof(struct i40e_asq_cmd_details),
I40E_NONDMA_MEM);
}
/* clear requested flags and then set additional flags if defined */
desc->flags &= ~CPU_TO_LE16(details->flags_dis);
desc->flags |= CPU_TO_LE16(details->flags_ena);
i40e_acquire_spinlock(&hw->aq.asq_spinlock);
if (buff_size > hw->aq.asq_buf_size) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Invalid buffer size: %d.\n",
buff_size);
status = I40E_ERR_INVALID_SIZE;
goto asq_send_command_error;
}
if (details->postpone && !details->async) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Async flag not set along with postpone flag");
status = I40E_ERR_PARAM;
goto asq_send_command_error;
}
/* call clean and check queue available function to reclaim the
* descriptors that were processed by FW, the function returns the
* number of desc available
*/
/* the clean function called here could be called in a separate thread
* in case of asynchronous completions
*/
if (i40e_clean_asq(hw) == 0) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Error queue is full.\n");
status = I40E_ERR_ADMIN_QUEUE_FULL;
goto asq_send_command_error;
}
/* initialize the temp desc pointer with the right desc */
desc_on_ring = I40E_ADMINQ_DESC(hw->aq.asq, hw->aq.asq.next_to_use);
/* if the desc is available copy the temp desc to the right place */
i40e_memcpy(desc_on_ring, desc, sizeof(struct i40e_aq_desc),
I40E_NONDMA_TO_DMA);
#ifdef I40E_QV
/* copy the descriptor from ring to userspace buffer */
i40e_memcpy(&qv_desc, desc_on_ring, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
qv_desc_on_ring = desc_on_ring;
desc_on_ring = &qv_desc;
#endif /* I40E_QV */
/* if buff is not NULL assume indirect command */
if (buff != NULL) {
dma_buff = &(hw->aq.asq.r.asq_bi[hw->aq.asq.next_to_use]);
/* copy the user buff into the respective DMA buff */
i40e_memcpy(dma_buff->va, buff, buff_size,
I40E_NONDMA_TO_DMA);
desc_on_ring->datalen = CPU_TO_LE16(buff_size);
/* Update the address values in the desc with the pa value
* for respective buffer
*/
desc_on_ring->params.external.addr_high =
CPU_TO_LE32(I40E_HI_DWORD(dma_buff->pa));
desc_on_ring->params.external.addr_low =
CPU_TO_LE32(I40E_LO_DWORD(dma_buff->pa));
#ifdef I40E_QV
/* copy the descriptor from userspace buffer to ring */
i40e_memcpy(qv_desc_on_ring, desc_on_ring,
sizeof(struct i40e_aq_desc), I40E_NONDMA_TO_DMA);
#endif /* I40E_QV */
}
/* bump the tail */
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc_on_ring,
buff, buff_size);
(hw->aq.asq.next_to_use)++;
if (hw->aq.asq.next_to_use == hw->aq.asq.count)
hw->aq.asq.next_to_use = 0;
if (!details->postpone)
wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
/* if cmd_details are not defined or async flag is not set,
* we need to wait for desc write back
*/
if (!details->async && !details->postpone) {
u32 total_delay = 0;
u32 delay_len = 10;
do {
#ifdef I40E_QV
/* copy the descriptor from ring to user buffer */
i40e_memcpy(desc_on_ring, qv_desc_on_ring,
sizeof(struct i40e_aq_desc), I40E_DMA_TO_NONDMA);
#endif /* I40E_QV */
/* AQ designers suggest use of head for better
* timing reliability than DD bit
*/
if (i40e_asq_done(hw))
break;
/* ugh! delay while spin_lock */
i40e_usec_delay(delay_len);
total_delay += delay_len;
} while (total_delay < hw->aq.asq_cmd_timeout);
}
/* if ready, copy the desc back to temp */
if (i40e_asq_done(hw)) {
#ifdef I40E_QV
/* Swap pointer back */
desc_on_ring = qv_desc_on_ring;
#endif /* I40E_QV */
i40e_memcpy(desc, desc_on_ring, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
if (buff != NULL)
i40e_memcpy(buff, dma_buff->va, buff_size,
I40E_DMA_TO_NONDMA);
retval = LE16_TO_CPU(desc->retval);
if (retval != 0) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Command completed with error 0x%X.\n",
retval);
/* strip off FW internal code */
retval &= 0xff;
}
cmd_completed = TRUE;
if ((enum i40e_admin_queue_err)retval == I40E_AQ_RC_OK)
status = I40E_SUCCESS;
else
status = I40E_ERR_ADMIN_QUEUE_ERROR;
hw->aq.asq_last_status = (enum i40e_admin_queue_err)retval;
}
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE,
"AQTX: desc and buffer writeback:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, buff, buff_size);
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQTX: Writeback timeout.\n");
status = I40E_ERR_ADMIN_QUEUE_TIMEOUT;
}
if (!status && i40e_is_nvm_update_op(desc))
hw->aq.nvm_busy = TRUE;
asq_send_command_error:
i40e_release_spinlock(&hw->aq.asq_spinlock);
asq_send_command_exit:
return status;
}
/**
* i40e_clean_arq_element
* @hw: pointer to the hw struct
* @e: event info from the receive descriptor, includes any buffers
* @pending: number of events that could be left to process
*
* This function cleans one Admin Receive Queue element and returns
* the contents through e. It can also return how many events are
* left to process through 'pending'
**/
enum i40e_status_code i40e_clean_arq_element(struct i40e_hw *hw,
struct i40e_arq_event_info *e,
u16 *pending)
{
#ifdef I40E_QV
struct i40e_aq_desc qv_desc = {0};
struct i40e_aq_desc *qv_desc_on_ring;
#endif /* I40E_QV */
enum i40e_status_code ret_code = I40E_SUCCESS;
u16 ntc = hw->aq.arq.next_to_clean;
struct i40e_aq_desc *desc;
struct i40e_dma_mem *bi;
u16 desc_idx;
u16 datalen;
u16 flags;
u16 ntu;
/* take the lock before we start messing with the ring */
i40e_acquire_spinlock(&hw->aq.arq_spinlock);
/* set next_to_use to head */
ntu = (rd32(hw, hw->aq.arq.head) & I40E_PF_ARQH_ARQH_MASK);
if (ntu == ntc) {
/* nothing to do - shouldn't need to update ring's values */
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQRX: Queue is empty.\n");
ret_code = I40E_ERR_ADMIN_QUEUE_NO_WORK;
goto clean_arq_element_out;
}
/* now clean the next descriptor */
desc = I40E_ADMINQ_DESC(hw->aq.arq, ntc);
#ifdef I40E_QV
/* copy the descriptor from ring to userspace buffer */
i40e_memcpy(&qv_desc, desc, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
qv_desc_on_ring = desc;
desc = &qv_desc;
#endif /* I40E_QV */
desc_idx = ntc;
flags = LE16_TO_CPU(desc->flags);
if (flags & I40E_AQ_FLAG_ERR) {
ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
hw->aq.arq_last_status =
(enum i40e_admin_queue_err)LE16_TO_CPU(desc->retval);
i40e_debug(hw,
I40E_DEBUG_AQ_MESSAGE,
"AQRX: Event received with error 0x%X.\n",
hw->aq.arq_last_status);
}
i40e_memcpy(&e->desc, desc, sizeof(struct i40e_aq_desc),
I40E_DMA_TO_NONDMA);
datalen = LE16_TO_CPU(desc->datalen);
e->msg_size = min(datalen, e->msg_size);
if (e->msg_buf != NULL && (e->msg_size != 0))
i40e_memcpy(e->msg_buf,
hw->aq.arq.r.arq_bi[desc_idx].va,
e->msg_size, I40E_DMA_TO_NONDMA);
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQRX: desc and buffer:\n");
i40e_debug_aq(hw, I40E_DEBUG_AQ_COMMAND, (void *)desc, e->msg_buf,
hw->aq.arq_buf_size);
/* Restore the original datalen and buffer address in the desc,
* FW updates datalen to indicate the event message
* size
*/
bi = &hw->aq.arq.r.arq_bi[ntc];
i40e_memset((void *)desc, 0, sizeof(struct i40e_aq_desc), I40E_DMA_MEM);
desc->flags = CPU_TO_LE16(I40E_AQ_FLAG_BUF);
if (hw->aq.arq_buf_size > I40E_AQ_LARGE_BUF)
desc->flags |= CPU_TO_LE16(I40E_AQ_FLAG_LB);
desc->datalen = CPU_TO_LE16((u16)bi->size);
desc->params.external.addr_high = CPU_TO_LE32(I40E_HI_DWORD(bi->pa));
desc->params.external.addr_low = CPU_TO_LE32(I40E_LO_DWORD(bi->pa));
#ifdef I40E_QV
/* copy the descriptor from userspace buffer to ring */
i40e_memcpy(qv_desc_on_ring, desc,
sizeof(struct i40e_aq_desc), I40E_NONDMA_TO_DMA);
#endif /* I40E_QV */
/* set tail = the last cleaned desc index. */
wr32(hw, hw->aq.arq.tail, ntc);
/* ntc is updated to tail + 1 */
ntc++;
if (ntc == hw->aq.num_arq_entries)
ntc = 0;
hw->aq.arq.next_to_clean = ntc;
hw->aq.arq.next_to_use = ntu;
clean_arq_element_out:
/* Set pending if needed, unlock and return */
if (pending != NULL)
*pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc);
i40e_release_spinlock(&hw->aq.arq_spinlock);
if (i40e_is_nvm_update_op(&e->desc)) {
hw->aq.nvm_busy = FALSE;
if (hw->aq.nvm_release_on_done) {
i40e_release_nvm(hw);
hw->aq.nvm_release_on_done = FALSE;
}
}
return ret_code;
}