--- /dev/null
+/*******************************************************************************
+
+Copyright (c) 2013 - 2015, Intel Corporation
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ 3. Neither the name of the Intel Corporation nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
+***************************************************************************/
+
+#include "i40e_status.h"
+#include "i40e_type.h"
+#include "i40e_register.h"
+#include "i40e_adminq.h"
+#include "i40e_prototype.h"
+
+#ifdef PF_DRIVER
+/**
+ * i40e_is_nvm_update_op - return true if this is an NVM update operation
+ * @desc: API request descriptor
+ **/
+STATIC INLINE bool i40e_is_nvm_update_op(struct i40e_aq_desc *desc)
+{
+ return (desc->opcode == CPU_TO_LE16(i40e_aqc_opc_nvm_erase) ||
+ desc->opcode == CPU_TO_LE16(i40e_aqc_opc_nvm_update));
+}
+
+#endif /* PF_DRIVER */
+/**
+ * i40e_adminq_init_regs - Initialize AdminQ registers
+ * @hw: pointer to the hardware structure
+ *
+ * This assumes the alloc_asq and alloc_arq functions have already been called
+ **/
+STATIC void i40e_adminq_init_regs(struct i40e_hw *hw)
+{
+ /* set head and tail registers in our local struct */
+ if (i40e_is_vf(hw)) {
+ hw->aq.asq.tail = I40E_VF_ATQT1;
+ hw->aq.asq.head = I40E_VF_ATQH1;
+ hw->aq.asq.len = I40E_VF_ATQLEN1;
+ hw->aq.asq.bal = I40E_VF_ATQBAL1;
+ hw->aq.asq.bah = I40E_VF_ATQBAH1;
+ hw->aq.arq.tail = I40E_VF_ARQT1;
+ hw->aq.arq.head = I40E_VF_ARQH1;
+ hw->aq.arq.len = I40E_VF_ARQLEN1;
+ hw->aq.arq.bal = I40E_VF_ARQBAL1;
+ hw->aq.arq.bah = I40E_VF_ARQBAH1;
+#ifdef PF_DRIVER
+ } else {
+ hw->aq.asq.tail = I40E_PF_ATQT;
+ hw->aq.asq.head = I40E_PF_ATQH;
+ hw->aq.asq.len = I40E_PF_ATQLEN;
+ hw->aq.asq.bal = I40E_PF_ATQBAL;
+ hw->aq.asq.bah = I40E_PF_ATQBAH;
+ hw->aq.arq.tail = I40E_PF_ARQT;
+ hw->aq.arq.head = I40E_PF_ARQH;
+ hw->aq.arq.len = I40E_PF_ARQLEN;
+ hw->aq.arq.bal = I40E_PF_ARQBAL;
+ hw->aq.arq.bah = I40E_PF_ARQBAH;
+#endif
+ }
+}
+
+/**
+ * i40e_alloc_adminq_asq_ring - Allocate Admin Queue send rings
+ * @hw: pointer to the hardware structure
+ **/
+enum i40e_status_code i40e_alloc_adminq_asq_ring(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code;
+
+ ret_code = i40e_allocate_dma_mem(hw, &hw->aq.asq.desc_buf,
+ i40e_mem_atq_ring,
+ (hw->aq.num_asq_entries *
+ sizeof(struct i40e_aq_desc)),
+ I40E_ADMINQ_DESC_ALIGNMENT);
+ if (ret_code)
+ return ret_code;
+
+ ret_code = i40e_allocate_virt_mem(hw, &hw->aq.asq.cmd_buf,
+ (hw->aq.num_asq_entries *
+ sizeof(struct i40e_asq_cmd_details)));
+ if (ret_code) {
+ i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
+ return ret_code;
+ }
+
+ return ret_code;
+}
+
+/**
+ * i40e_alloc_adminq_arq_ring - Allocate Admin Queue receive rings
+ * @hw: pointer to the hardware structure
+ **/
+enum i40e_status_code i40e_alloc_adminq_arq_ring(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code;
+
+ ret_code = i40e_allocate_dma_mem(hw, &hw->aq.arq.desc_buf,
+ i40e_mem_arq_ring,
+ (hw->aq.num_arq_entries *
+ sizeof(struct i40e_aq_desc)),
+ I40E_ADMINQ_DESC_ALIGNMENT);
+
+ return ret_code;
+}
+
+/**
+ * i40e_free_adminq_asq - Free Admin Queue send rings
+ * @hw: pointer to the hardware structure
+ *
+ * This assumes the posted send buffers have already been cleaned
+ * and de-allocated
+ **/
+void i40e_free_adminq_asq(struct i40e_hw *hw)
+{
+ i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
+}
+
+/**
+ * i40e_free_adminq_arq - Free Admin Queue receive rings
+ * @hw: pointer to the hardware structure
+ *
+ * This assumes the posted receive buffers have already been cleaned
+ * and de-allocated
+ **/
+void i40e_free_adminq_arq(struct i40e_hw *hw)
+{
+ i40e_free_dma_mem(hw, &hw->aq.arq.desc_buf);
+}
+
+/**
+ * i40e_alloc_arq_bufs - Allocate pre-posted buffers for the receive queue
+ * @hw: pointer to the hardware structure
+ **/
+STATIC enum i40e_status_code i40e_alloc_arq_bufs(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code;
+ struct i40e_aq_desc *desc;
+ struct i40e_dma_mem *bi;
+ int i;
+
+ /* We'll be allocating the buffer info memory first, then we can
+ * allocate the mapped buffers for the event processing
+ */
+
+ /* buffer_info structures do not need alignment */
+ ret_code = i40e_allocate_virt_mem(hw, &hw->aq.arq.dma_head,
+ (hw->aq.num_arq_entries * sizeof(struct i40e_dma_mem)));
+ if (ret_code)
+ goto alloc_arq_bufs;
+ hw->aq.arq.r.arq_bi = (struct i40e_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 = i40e_allocate_dma_mem(hw, bi,
+ i40e_mem_arq_buf,
+ hw->aq.arq_buf_size,
+ I40E_ADMINQ_DESC_ALIGNMENT);
+ if (ret_code)
+ goto unwind_alloc_arq_bufs;
+
+ /* now configure the descriptors for use */
+ desc = I40E_ADMINQ_DESC(hw->aq.arq, i);
+
+ 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->opcode = 0;
+ /* This is in accordance with Admin queue design, there is no
+ * register for buffer size configuration
+ */
+ desc->datalen = CPU_TO_LE16((u16)bi->size);
+ desc->retval = 0;
+ desc->cookie_high = 0;
+ desc->cookie_low = 0;
+ 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));
+ desc->params.external.param0 = 0;
+ desc->params.external.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--)
+ i40e_free_dma_mem(hw, &hw->aq.arq.r.arq_bi[i]);
+ i40e_free_virt_mem(hw, &hw->aq.arq.dma_head);
+
+ return ret_code;
+}
+
+/**
+ * i40e_alloc_asq_bufs - Allocate empty buffer structs for the send queue
+ * @hw: pointer to the hardware structure
+ **/
+STATIC enum i40e_status_code i40e_alloc_asq_bufs(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code;
+ struct i40e_dma_mem *bi;
+ int i;
+
+ /* No mapped memory needed yet, just the buffer info structures */
+ ret_code = i40e_allocate_virt_mem(hw, &hw->aq.asq.dma_head,
+ (hw->aq.num_asq_entries * sizeof(struct i40e_dma_mem)));
+ if (ret_code)
+ goto alloc_asq_bufs;
+ hw->aq.asq.r.asq_bi = (struct i40e_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 = i40e_allocate_dma_mem(hw, bi,
+ i40e_mem_asq_buf,
+ hw->aq.asq_buf_size,
+ I40E_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--)
+ i40e_free_dma_mem(hw, &hw->aq.asq.r.asq_bi[i]);
+ i40e_free_virt_mem(hw, &hw->aq.asq.dma_head);
+
+ return ret_code;
+}
+
+/**
+ * i40e_free_arq_bufs - Free receive queue buffer info elements
+ * @hw: pointer to the hardware structure
+ **/
+STATIC void i40e_free_arq_bufs(struct i40e_hw *hw)
+{
+ int i;
+
+ /* free descriptors */
+ for (i = 0; i < hw->aq.num_arq_entries; i++)
+ i40e_free_dma_mem(hw, &hw->aq.arq.r.arq_bi[i]);
+
+ /* free the descriptor memory */
+ i40e_free_dma_mem(hw, &hw->aq.arq.desc_buf);
+
+ /* free the dma header */
+ i40e_free_virt_mem(hw, &hw->aq.arq.dma_head);
+}
+
+/**
+ * i40e_free_asq_bufs - Free send queue buffer info elements
+ * @hw: pointer to the hardware structure
+ **/
+STATIC void i40e_free_asq_bufs(struct i40e_hw *hw)
+{
+ int i;
+
+ /* 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)
+ i40e_free_dma_mem(hw, &hw->aq.asq.r.asq_bi[i]);
+
+ /* free the buffer info list */
+ i40e_free_virt_mem(hw, &hw->aq.asq.cmd_buf);
+
+ /* free the descriptor memory */
+ i40e_free_dma_mem(hw, &hw->aq.asq.desc_buf);
+
+ /* free the dma header */
+ i40e_free_virt_mem(hw, &hw->aq.asq.dma_head);
+}
+
+/**
+ * i40e_config_asq_regs - configure ASQ registers
+ * @hw: pointer to the hardware structure
+ *
+ * Configure base address and length registers for the transmit queue
+ **/
+STATIC enum i40e_status_code i40e_config_asq_regs(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code = I40E_SUCCESS;
+ u32 reg = 0;
+
+ /* Clear Head and Tail */
+ wr32(hw, hw->aq.asq.head, 0);
+ wr32(hw, hw->aq.asq.tail, 0);
+
+ /* set starting point */
+#ifdef PF_DRIVER
+#ifdef INTEGRATED_VF
+ if (!i40e_is_vf(hw))
+ wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
+ I40E_PF_ATQLEN_ATQENABLE_MASK));
+#else
+ wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
+ I40E_PF_ATQLEN_ATQENABLE_MASK));
+#endif /* INTEGRATED_VF */
+#endif /* PF_DRIVER */
+#ifdef VF_DRIVER
+#ifdef INTEGRATED_VF
+ if (i40e_is_vf(hw))
+ wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
+ I40E_VF_ATQLEN1_ATQENABLE_MASK));
+#else
+ wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
+ I40E_VF_ATQLEN1_ATQENABLE_MASK));
+#endif /* INTEGRATED_VF */
+#endif /* VF_DRIVER */
+ wr32(hw, hw->aq.asq.bal, I40E_LO_DWORD(hw->aq.asq.desc_buf.pa));
+ wr32(hw, hw->aq.asq.bah, I40E_HI_DWORD(hw->aq.asq.desc_buf.pa));
+
+ /* Check one register to verify that config was applied */
+ reg = rd32(hw, hw->aq.asq.bal);
+ if (reg != I40E_LO_DWORD(hw->aq.asq.desc_buf.pa))
+ ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
+
+ return ret_code;
+}
+
+/**
+ * i40e_config_arq_regs - ARQ register configuration
+ * @hw: pointer to the hardware structure
+ *
+ * Configure base address and length registers for the receive (event queue)
+ **/
+STATIC enum i40e_status_code i40e_config_arq_regs(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code = I40E_SUCCESS;
+ u32 reg = 0;
+
+ /* Clear Head and Tail */
+ wr32(hw, hw->aq.arq.head, 0);
+ wr32(hw, hw->aq.arq.tail, 0);
+
+ /* set starting point */
+#ifdef PF_DRIVER
+#ifdef INTEGRATED_VF
+ if (!i40e_is_vf(hw))
+ wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
+ I40E_PF_ARQLEN_ARQENABLE_MASK));
+#else
+ wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
+ I40E_PF_ARQLEN_ARQENABLE_MASK));
+#endif /* INTEGRATED_VF */
+#endif /* PF_DRIVER */
+#ifdef VF_DRIVER
+#ifdef INTEGRATED_VF
+ if (i40e_is_vf(hw))
+ wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
+ I40E_VF_ARQLEN1_ARQENABLE_MASK));
+#else
+ wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
+ I40E_VF_ARQLEN1_ARQENABLE_MASK));
+#endif /* INTEGRATED_VF */
+#endif /* VF_DRIVER */
+ wr32(hw, hw->aq.arq.bal, I40E_LO_DWORD(hw->aq.arq.desc_buf.pa));
+ wr32(hw, hw->aq.arq.bah, I40E_HI_DWORD(hw->aq.arq.desc_buf.pa));
+
+ /* Update tail in the HW to post pre-allocated buffers */
+ wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
+
+ /* Check one register to verify that config was applied */
+ reg = rd32(hw, hw->aq.arq.bal);
+ if (reg != I40E_LO_DWORD(hw->aq.arq.desc_buf.pa))
+ ret_code = I40E_ERR_ADMIN_QUEUE_ERROR;
+
+ return ret_code;
+}
+
+/**
+ * i40e_init_asq - main initialization routine for ASQ
+ * @hw: pointer to the hardware structure
+ *
+ * This is the main initialization routine for the Admin Send Queue
+ * Prior to calling this function, drivers *MUST* set the following fields
+ * in the hw->aq structure:
+ * - hw->aq.num_asq_entries
+ * - hw->aq.arq_buf_size
+ *
+ * Do *NOT* hold the lock when calling this as the memory allocation routines
+ * called are not going to be atomic context safe
+ **/
+enum i40e_status_code i40e_init_asq(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code = I40E_SUCCESS;
+
+ if (hw->aq.asq.count > 0) {
+ /* queue already initialized */
+ ret_code = I40E_ERR_NOT_READY;
+ goto init_adminq_exit;
+ }
+
+ /* verify input for valid configuration */
+ if ((hw->aq.num_asq_entries == 0) ||
+ (hw->aq.asq_buf_size == 0)) {
+ ret_code = I40E_ERR_CONFIG;
+ goto init_adminq_exit;
+ }
+
+ hw->aq.asq.next_to_use = 0;
+ hw->aq.asq.next_to_clean = 0;
+
+ /* allocate the ring memory */
+ ret_code = i40e_alloc_adminq_asq_ring(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_exit;
+
+ /* allocate buffers in the rings */
+ ret_code = i40e_alloc_asq_bufs(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_free_rings;
+
+ /* initialize base registers */
+ ret_code = i40e_config_asq_regs(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_free_rings;
+
+ /* success! */
+ hw->aq.asq.count = hw->aq.num_asq_entries;
+ goto init_adminq_exit;
+
+init_adminq_free_rings:
+ i40e_free_adminq_asq(hw);
+
+init_adminq_exit:
+ return ret_code;
+}
+
+/**
+ * i40e_init_arq - initialize ARQ
+ * @hw: pointer to the hardware structure
+ *
+ * The main initialization routine for the Admin Receive (Event) Queue.
+ * Prior to calling this function, drivers *MUST* set the following fields
+ * in the hw->aq structure:
+ * - hw->aq.num_asq_entries
+ * - hw->aq.arq_buf_size
+ *
+ * Do *NOT* hold the lock when calling this as the memory allocation routines
+ * called are not going to be atomic context safe
+ **/
+enum i40e_status_code i40e_init_arq(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code = I40E_SUCCESS;
+
+ if (hw->aq.arq.count > 0) {
+ /* queue already initialized */
+ ret_code = I40E_ERR_NOT_READY;
+ goto init_adminq_exit;
+ }
+
+ /* verify input for valid configuration */
+ if ((hw->aq.num_arq_entries == 0) ||
+ (hw->aq.arq_buf_size == 0)) {
+ ret_code = I40E_ERR_CONFIG;
+ goto init_adminq_exit;
+ }
+
+ hw->aq.arq.next_to_use = 0;
+ hw->aq.arq.next_to_clean = 0;
+
+ /* allocate the ring memory */
+ ret_code = i40e_alloc_adminq_arq_ring(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_exit;
+
+ /* allocate buffers in the rings */
+ ret_code = i40e_alloc_arq_bufs(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_free_rings;
+
+ /* initialize base registers */
+ ret_code = i40e_config_arq_regs(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_free_rings;
+
+ /* success! */
+ hw->aq.arq.count = hw->aq.num_arq_entries;
+ goto init_adminq_exit;
+
+init_adminq_free_rings:
+ i40e_free_adminq_arq(hw);
+
+init_adminq_exit:
+ return ret_code;
+}
+
+/**
+ * i40e_shutdown_asq - shutdown the ASQ
+ * @hw: pointer to the hardware structure
+ *
+ * The main shutdown routine for the Admin Send Queue
+ **/
+enum i40e_status_code i40e_shutdown_asq(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code = I40E_SUCCESS;
+
+ i40e_acquire_spinlock(&hw->aq.asq_spinlock);
+
+ if (hw->aq.asq.count == 0) {
+ ret_code = I40E_ERR_NOT_READY;
+ goto shutdown_asq_out;
+ }
+
+ /* Stop firmware AdminQ processing */
+ wr32(hw, hw->aq.asq.head, 0);
+ wr32(hw, hw->aq.asq.tail, 0);
+ wr32(hw, hw->aq.asq.len, 0);
+ wr32(hw, hw->aq.asq.bal, 0);
+ wr32(hw, hw->aq.asq.bah, 0);
+
+ hw->aq.asq.count = 0; /* to indicate uninitialized queue */
+
+ /* free ring buffers */
+ i40e_free_asq_bufs(hw);
+
+shutdown_asq_out:
+ i40e_release_spinlock(&hw->aq.asq_spinlock);
+ return ret_code;
+}
+
+/**
+ * i40e_shutdown_arq - shutdown ARQ
+ * @hw: pointer to the hardware structure
+ *
+ * The main shutdown routine for the Admin Receive Queue
+ **/
+enum i40e_status_code i40e_shutdown_arq(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code = I40E_SUCCESS;
+
+ i40e_acquire_spinlock(&hw->aq.arq_spinlock);
+
+ if (hw->aq.arq.count == 0) {
+ ret_code = I40E_ERR_NOT_READY;
+ goto shutdown_arq_out;
+ }
+
+ /* Stop firmware AdminQ processing */
+ wr32(hw, hw->aq.arq.head, 0);
+ wr32(hw, hw->aq.arq.tail, 0);
+ wr32(hw, hw->aq.arq.len, 0);
+ wr32(hw, hw->aq.arq.bal, 0);
+ wr32(hw, hw->aq.arq.bah, 0);
+
+ hw->aq.arq.count = 0; /* to indicate uninitialized queue */
+
+ /* free ring buffers */
+ i40e_free_arq_bufs(hw);
+
+shutdown_arq_out:
+ i40e_release_spinlock(&hw->aq.arq_spinlock);
+ return ret_code;
+}
+
+/**
+ * i40e_init_adminq - main initialization routine for Admin Queue
+ * @hw: pointer to the hardware structure
+ *
+ * Prior to calling this function, drivers *MUST* set the following fields
+ * in the hw->aq structure:
+ * - hw->aq.num_asq_entries
+ * - hw->aq.num_arq_entries
+ * - hw->aq.arq_buf_size
+ * - hw->aq.asq_buf_size
+ **/
+enum i40e_status_code i40e_init_adminq(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code;
+#ifdef PF_DRIVER
+ u16 eetrack_lo, eetrack_hi;
+ u16 cfg_ptr, oem_hi, oem_lo;
+ int retry = 0;
+#endif
+ /* verify input for valid configuration */
+ if ((hw->aq.num_arq_entries == 0) ||
+ (hw->aq.num_asq_entries == 0) ||
+ (hw->aq.arq_buf_size == 0) ||
+ (hw->aq.asq_buf_size == 0)) {
+ ret_code = I40E_ERR_CONFIG;
+ goto init_adminq_exit;
+ }
+
+ /* initialize spin locks */
+ i40e_init_spinlock(&hw->aq.asq_spinlock);
+ i40e_init_spinlock(&hw->aq.arq_spinlock);
+
+ /* Set up register offsets */
+ i40e_adminq_init_regs(hw);
+
+ /* setup ASQ command write back timeout */
+ hw->aq.asq_cmd_timeout = I40E_ASQ_CMD_TIMEOUT;
+
+ /* allocate the ASQ */
+ ret_code = i40e_init_asq(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_destroy_spinlocks;
+
+ /* allocate the ARQ */
+ ret_code = i40e_init_arq(hw);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_free_asq;
+
+#ifdef PF_DRIVER
+#ifdef INTEGRATED_VF
+ /* VF has no need of firmware */
+ if (i40e_is_vf(hw))
+ goto init_adminq_exit;
+#endif
+ /* There are some cases where the firmware may not be quite ready
+ * for AdminQ operations, so we retry the AdminQ setup a few times
+ * if we see timeouts in this first AQ call.
+ */
+ do {
+ ret_code = i40e_aq_get_firmware_version(hw,
+ &hw->aq.fw_maj_ver,
+ &hw->aq.fw_min_ver,
+ &hw->aq.fw_build,
+ &hw->aq.api_maj_ver,
+ &hw->aq.api_min_ver,
+ NULL);
+ if (ret_code != I40E_ERR_ADMIN_QUEUE_TIMEOUT)
+ break;
+ retry++;
+ i40e_msec_delay(100);
+ i40e_resume_aq(hw);
+ } while (retry < 10);
+ if (ret_code != I40E_SUCCESS)
+ goto init_adminq_free_arq;
+
+ /* get the NVM version info */
+ i40e_read_nvm_word(hw, I40E_SR_NVM_DEV_STARTER_VERSION,
+ &hw->nvm.version);
+ i40e_read_nvm_word(hw, I40E_SR_NVM_EETRACK_LO, &eetrack_lo);
+ i40e_read_nvm_word(hw, I40E_SR_NVM_EETRACK_HI, &eetrack_hi);
+ hw->nvm.eetrack = (eetrack_hi << 16) | eetrack_lo;
+ i40e_read_nvm_word(hw, I40E_SR_BOOT_CONFIG_PTR, &cfg_ptr);
+ i40e_read_nvm_word(hw, (cfg_ptr + I40E_NVM_OEM_VER_OFF),
+ &oem_hi);
+ i40e_read_nvm_word(hw, (cfg_ptr + (I40E_NVM_OEM_VER_OFF + 1)),
+ &oem_lo);
+ hw->nvm.oem_ver = ((u32)oem_hi << 16) | oem_lo;
+
+ if (hw->aq.api_maj_ver > I40E_FW_API_VERSION_MAJOR) {
+ ret_code = I40E_ERR_FIRMWARE_API_VERSION;
+ goto init_adminq_free_arq;
+ }
+
+ /* pre-emptive resource lock release */
+ i40e_aq_release_resource(hw, I40E_NVM_RESOURCE_ID, 0, NULL);
+ hw->aq.nvm_release_on_done = false;
+ hw->nvmupd_state = I40E_NVMUPD_STATE_INIT;
+
+ ret_code = i40e_aq_set_hmc_resource_profile(hw,
+ I40E_HMC_PROFILE_DEFAULT,
+ 0,
+ NULL);
+#endif /* PF_DRIVER */
+ ret_code = I40E_SUCCESS;
+
+ /* success! */
+ goto init_adminq_exit;
+
+#ifdef PF_DRIVER
+init_adminq_free_arq:
+ i40e_shutdown_arq(hw);
+#endif
+init_adminq_free_asq:
+ i40e_shutdown_asq(hw);
+init_adminq_destroy_spinlocks:
+ i40e_destroy_spinlock(&hw->aq.asq_spinlock);
+ i40e_destroy_spinlock(&hw->aq.arq_spinlock);
+
+init_adminq_exit:
+ return ret_code;
+}
+
+/**
+ * i40e_shutdown_adminq - shutdown routine for the Admin Queue
+ * @hw: pointer to the hardware structure
+ **/
+enum i40e_status_code i40e_shutdown_adminq(struct i40e_hw *hw)
+{
+ enum i40e_status_code ret_code = I40E_SUCCESS;
+
+ if (i40e_check_asq_alive(hw))
+ i40e_aq_queue_shutdown(hw, true);
+
+ i40e_shutdown_asq(hw);
+ i40e_shutdown_arq(hw);
+
+ /* destroy the spinlocks */
+ i40e_destroy_spinlock(&hw->aq.asq_spinlock);
+ i40e_destroy_spinlock(&hw->aq.arq_spinlock);
+
+ if (hw->nvm_buff.va)
+ i40e_free_virt_mem(hw, &hw->nvm_buff);
+
+ return ret_code;
+}
+
+/**
+ * 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);
+}
+
+/**
+ * i40e_asq_done - check if FW has processed the Admin Send Queue
+ * @hw: pointer to the hw struct
+ *
+ * Returns true if the firmware has processed all descriptors on the
+ * admin send queue. Returns false if there are still requests pending.
+ **/
+bool i40e_asq_done(struct i40e_hw *hw)
+{
+ /* AQ designers suggest use of head for better
+ * timing reliability than DD bit
+ */
+ return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
+
+}
+
+/**
+ * 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;
+ /* ugh! delay while spin_lock */
+ i40e_msec_delay(1);
+ total_delay++;
+ } 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
+ 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)) {
+ 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 PF_DRIVER
+#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_PF_ARQH_ARQH_MASK);
+#endif /* INTEGRATED_VF */
+#endif /* PF_DRIVER */
+#ifdef VF_DRIVER
+#ifdef INTEGRATED_VF
+ if (i40e_is_vf(hw))
+ ntu = (rd32(hw, hw->aq.arq.head) & I40E_VF_ARQH1_ARQH_MASK);
+#else
+ ntu = (rd32(hw, hw->aq.arq.head) & I40E_VF_ARQH1_ARQH_MASK);
+#endif /* INTEGRATED_VF */
+#endif /* VF_DRIVER */
+ 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;
+
+ 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_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
+ if (i40e_is_nvm_update_op(&e->desc)) {
+ if (hw->aq.nvm_release_on_done) {
+ i40e_release_nvm(hw);
+ hw->aq.nvm_release_on_done = false;
+ }
+
+ switch (hw->nvmupd_state) {
+ case I40E_NVMUPD_STATE_INIT_WAIT:
+ hw->nvmupd_state = I40E_NVMUPD_STATE_INIT;
+ break;
+
+ case I40E_NVMUPD_STATE_WRITE_WAIT:
+ hw->nvmupd_state = I40E_NVMUPD_STATE_WRITING;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+#endif
+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;
+}
+
+void i40e_resume_aq(struct i40e_hw *hw)
+{
+ /* Registers are reset after PF reset */
+ hw->aq.asq.next_to_use = 0;
+ hw->aq.asq.next_to_clean = 0;
+
+ i40e_config_asq_regs(hw);
+
+ hw->aq.arq.next_to_use = 0;
+ hw->aq.arq.next_to_clean = 0;
+
+ i40e_config_arq_regs(hw);
+}
Code Review / deb_dpdk.git / blobdiff