/* We'll be allocating the buffer info memory first, then we can *allocatethemappedbuffersfortheeventprocessing
*/
/* buffer_info structures do not need alignment */
ret_code = iavf_allocate_virt_mem(hw, &hw->aq.arq.dma_head,
(hw->aq.num_arq_entries * sizeof(struct iavf_dma_mem))); if (ret_code) goto alloc_arq_bufs;
hw->aq.arq.r.arq_bi = (struct iavf_dma_mem *)hw->aq.arq.dma_head.va;
/* allocate the mapped buffers */ for (i = 0; i < hw->aq.num_arq_entries; i++) {
bi = &hw->aq.arq.r.arq_bi[i];
ret_code = iavf_allocate_dma_mem(hw, bi,
iavf_mem_arq_buf,
hw->aq.arq_buf_size,
IAVF_ADMINQ_DESC_ALIGNMENT); if (ret_code) goto unwind_alloc_arq_bufs;
/* now configure the descriptors for use */
desc = IAVF_ADMINQ_DESC(hw->aq.arq, i);
desc->flags = cpu_to_le16(LIBIE_AQ_FLAG_BUF); if (hw->aq.arq_buf_size > IAVF_AQ_LARGE_BUF)
desc->flags |= cpu_to_le16(LIBIE_AQ_FLAG_LB);
desc->opcode = 0; /* This is in accordance with Admin queue design, there is no *registerforbuffersizeconfiguration
*/
desc->datalen = cpu_to_le16((u16)bi->size);
desc->retval = 0;
desc->cookie_high = 0;
desc->cookie_low = 0;
desc->params.generic.addr_high =
cpu_to_le32(upper_32_bits(bi->pa));
desc->params.generic.addr_low =
cpu_to_le32(lower_32_bits(bi->pa));
desc->params.generic.param0 = 0;
desc->params.generic.param1 = 0;
}
alloc_arq_bufs: return ret_code;
unwind_alloc_arq_bufs: /* don't try to free the one that failed... */
i--; for (; i >= 0; i--)
iavf_free_dma_mem(hw, &hw->aq.arq.r.arq_bi[i]);
iavf_free_virt_mem(hw, &hw->aq.arq.dma_head);
/* No mapped memory needed yet, just the buffer info structures */
ret_code = iavf_allocate_virt_mem(hw, &hw->aq.asq.dma_head,
(hw->aq.num_asq_entries * sizeof(struct iavf_dma_mem))); if (ret_code) goto alloc_asq_bufs;
hw->aq.asq.r.asq_bi = (struct iavf_dma_mem *)hw->aq.asq.dma_head.va;
/* allocate the mapped buffers */ for (i = 0; i < hw->aq.num_asq_entries; i++) {
bi = &hw->aq.asq.r.asq_bi[i];
ret_code = iavf_allocate_dma_mem(hw, bi,
iavf_mem_asq_buf,
hw->aq.asq_buf_size,
IAVF_ADMINQ_DESC_ALIGNMENT); if (ret_code) goto unwind_alloc_asq_bufs;
}
alloc_asq_bufs: return ret_code;
unwind_alloc_asq_bufs: /* don't try to free the one that failed... */
i--; for (; i >= 0; i--)
iavf_free_dma_mem(hw, &hw->aq.asq.r.asq_bi[i]);
iavf_free_virt_mem(hw, &hw->aq.asq.dma_head);
/* only unmap if the address is non-NULL */ for (i = 0; i < hw->aq.num_asq_entries; i++) if (hw->aq.asq.r.asq_bi[i].pa)
iavf_free_dma_mem(hw, &hw->aq.asq.r.asq_bi[i]);
/* free the buffer info list */
iavf_free_virt_mem(hw, &hw->aq.asq.cmd_buf);
/* free the descriptor memory */
iavf_free_dma_mem(hw, &hw->aq.asq.desc_buf);
/* free the dma header */
iavf_free_virt_mem(hw, &hw->aq.asq.dma_head);
}
/* Clear Head and Tail */
wr32(hw, IAVF_VF_ATQH1, 0);
wr32(hw, IAVF_VF_ATQT1, 0);
/* set starting point */
wr32(hw, IAVF_VF_ATQLEN1, (hw->aq.num_asq_entries |
IAVF_VF_ATQLEN1_ATQENABLE_MASK));
wr32(hw, IAVF_VF_ATQBAL1, lower_32_bits(hw->aq.asq.desc_buf.pa));
wr32(hw, IAVF_VF_ATQBAH1, upper_32_bits(hw->aq.asq.desc_buf.pa));
/* Check one register to verify that config was applied */
reg = rd32(hw, IAVF_VF_ATQBAL1); if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
/* Clear Head and Tail */
wr32(hw, IAVF_VF_ARQH1, 0);
wr32(hw, IAVF_VF_ARQT1, 0);
/* set starting point */
wr32(hw, IAVF_VF_ARQLEN1, (hw->aq.num_arq_entries |
IAVF_VF_ARQLEN1_ARQENABLE_MASK));
wr32(hw, IAVF_VF_ARQBAL1, lower_32_bits(hw->aq.arq.desc_buf.pa));
wr32(hw, IAVF_VF_ARQBAH1, upper_32_bits(hw->aq.arq.desc_buf.pa));
/* Update tail in the HW to post pre-allocated buffers */
wr32(hw, IAVF_VF_ARQT1, hw->aq.num_arq_entries - 1);
/* Check one register to verify that config was applied */
reg = rd32(hw, IAVF_VF_ARQBAL1); if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
init_free_asq_bufs: for (i = 0; i < hw->aq.num_asq_entries; i++)
iavf_free_dma_mem(hw, &hw->aq.asq.r.asq_bi[i]);
iavf_free_virt_mem(hw, &hw->aq.asq.dma_head);
init_free_arq_bufs: for (i = 0; i < hw->aq.num_arq_entries; i++)
iavf_free_dma_mem(hw, &hw->aq.arq.r.arq_bi[i]);
iavf_free_virt_mem(hw, &hw->aq.arq.dma_head);
init_adminq_free_rings:
iavf_free_adminq_arq(hw);
if (hw->aq.asq.count == 0) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE, "AQTX: Admin queue not initialized.\n");
status = IAVF_ERR_QUEUE_EMPTY; goto asq_send_command_error;
}
hw->aq.asq_last_status = LIBIE_AQ_RC_OK;
val = rd32(hw, IAVF_VF_ATQH1); if (val >= hw->aq.num_asq_entries) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE, "AQTX: head overrun at %d\n", val);
status = IAVF_ERR_QUEUE_EMPTY; goto asq_send_command_error;
}
details = IAVF_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_le32isnotneededherebecausethedataisignored *bytheFW,onlyusedbythedriver
*/ 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 iavf_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) {
iavf_debug(hw,
IAVF_DEBUG_AQ_MESSAGE, "AQTX: Invalid buffer size: %d.\n",
buff_size);
status = IAVF_ERR_INVALID_SIZE; goto asq_send_command_error;
}
if (details->postpone && !details->async) {
iavf_debug(hw,
IAVF_DEBUG_AQ_MESSAGE, "AQTX: Async flag not set along with postpone flag");
status = IAVF_ERR_PARAM; goto asq_send_command_error;
}
/* call clean and check queue available function to reclaim the *descriptorsthatwereprocessedbyFW,thefunctionreturnsthe *numberofdescavailable
*/ /* the clean function called here could be called in a separate thread *incaseofasynchronouscompletions
*/ if (iavf_clean_asq(hw) == 0) {
iavf_debug(hw,
IAVF_DEBUG_AQ_MESSAGE, "AQTX: Error queue is full.\n");
status = IAVF_ERR_ADMIN_QUEUE_FULL; goto asq_send_command_error;
}
/* initialize the temp desc pointer with the right desc */
desc_on_ring = IAVF_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) {
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 *forrespectivebuffer
*/
desc_on_ring->params.generic.addr_high =
cpu_to_le32(upper_32_bits(dma_buff->pa));
desc_on_ring->params.generic.addr_low =
cpu_to_le32(lower_32_bits(dma_buff->pa));
}
/* bump the tail */
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE, "AQTX: desc and buffer:\n");
iavf_debug_aq(hw, IAVF_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, IAVF_VF_ATQT1, hw->aq.asq.next_to_use);
/* if cmd_details are not defined or async flag is not set, *weneedtowaitfordescwriteback
*/ if (!details->async && !details->postpone) {
u32 total_delay = 0;
do { /* AQ designers suggest use of head for better *timingreliabilitythanDDbit
*/ if (iavf_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 (iavf_asq_done(hw)) {
*desc = *desc_on_ring; if (buff)
memcpy(buff, dma_buff->va, buff_size);
retval = le16_to_cpu(desc->retval); if (retval != 0) {
iavf_debug(hw,
IAVF_DEBUG_AQ_MESSAGE, "AQTX: Command completed with error 0x%X.\n",
retval);
/* strip off FW internal code */
retval &= 0xff;
}
cmd_completed = true; if ((enum libie_aq_err)retval == LIBIE_AQ_RC_OK)
status = 0; elseif ((enum libie_aq_err)retval == LIBIE_AQ_RC_EBUSY)
status = IAVF_ERR_NOT_READY; else
status = IAVF_ERR_ADMIN_QUEUE_ERROR;
hw->aq.asq_last_status = (enum libie_aq_err)retval;
}
/* 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, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE, "AQTX: AQ Critical error.\n");
status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
} else {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE, "AQTX: Writeback timeout.\n");
status = IAVF_ERR_ADMIN_QUEUE_TIMEOUT;
}
}
/* 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) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE, "AQRX: Admin queue not initialized.\n");
ret_code = IAVF_ERR_QUEUE_EMPTY; goto clean_arq_element_err;
}
/* set next_to_use to head */
ntu = rd32(hw, IAVF_VF_ARQH1) & IAVF_VF_ARQH1_ARQH_MASK; if (ntu == ntc) { /* nothing to do - shouldn't need to update ring's values */
ret_code = IAVF_ERR_ADMIN_QUEUE_NO_WORK; goto clean_arq_element_out;
}
/* now clean the next descriptor */
desc = IAVF_ADMINQ_DESC(hw->aq.arq, ntc);
desc_idx = ntc;
hw->aq.arq_last_status =
(enum libie_aq_err)le16_to_cpu(desc->retval);
flags = le16_to_cpu(desc->flags); if (flags & LIBIE_AQ_FLAG_ERR) {
ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
iavf_debug(hw,
IAVF_DEBUG_AQ_MESSAGE, "AQRX: Event received with error 0x%X.\n",
hw->aq.arq_last_status);
}
/* Restore the original datalen and buffer address in the desc, *FWupdatesdatalentoindicatetheeventmessage *size
*/
bi = &hw->aq.arq.r.arq_bi[ntc];
memset((void *)desc, 0, sizeof(struct libie_aq_desc));
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