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Message-Id: <20180315234802.31336-3-anirudh.venkataramanan@intel.com>
Date: Thu, 15 Mar 2018 16:47:49 -0700
From: Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org
Subject: [PATCH v2 02/15] ice: Add support for control queues
A control queue is a hardware interface which is used by the driver
to interact with other subsystems (like firmware, PHY, etc.). It is
implemented as a producer-consumer ring. More specifically, an
"admin queue" is a type of control queue used to interact with the
firmware.
This patch introduces data structures and functions to initialize
and teardown control/admin queues. Once the admin queue is initialized,
the driver uses it to get the firmware version.
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>
---
drivers/net/ethernet/intel/ice/Makefile | 4 +-
drivers/net/ethernet/intel/ice/ice.h | 1 +
drivers/net/ethernet/intel/ice/ice_adminq_cmd.h | 108 +++
drivers/net/ethernet/intel/ice/ice_common.c | 144 ++++
drivers/net/ethernet/intel/ice/ice_common.h | 39 +
drivers/net/ethernet/intel/ice/ice_controlq.c | 979 ++++++++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_controlq.h | 97 +++
drivers/net/ethernet/intel/ice/ice_hw_autogen.h | 46 ++
drivers/net/ethernet/intel/ice/ice_main.c | 11 +-
drivers/net/ethernet/intel/ice/ice_osdep.h | 86 +++
drivers/net/ethernet/intel/ice/ice_status.h | 35 +
drivers/net/ethernet/intel/ice/ice_type.h | 22 +
12 files changed, 1570 insertions(+), 2 deletions(-)
create mode 100644 drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
create mode 100644 drivers/net/ethernet/intel/ice/ice_common.c
create mode 100644 drivers/net/ethernet/intel/ice/ice_common.h
create mode 100644 drivers/net/ethernet/intel/ice/ice_controlq.c
create mode 100644 drivers/net/ethernet/intel/ice/ice_controlq.h
create mode 100644 drivers/net/ethernet/intel/ice/ice_hw_autogen.h
create mode 100644 drivers/net/ethernet/intel/ice/ice_osdep.h
create mode 100644 drivers/net/ethernet/intel/ice/ice_status.h
diff --git a/drivers/net/ethernet/intel/ice/Makefile b/drivers/net/ethernet/intel/ice/Makefile
index 2a177ea21b74..eebf619e84a8 100644
--- a/drivers/net/ethernet/intel/ice/Makefile
+++ b/drivers/net/ethernet/intel/ice/Makefile
@@ -24,4 +24,6 @@
obj-$(CONFIG_ICE) += ice.o
-ice-y := ice_main.o
+ice-y := ice_main.o \
+ ice_controlq.o \
+ ice_common.o
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index d781027330cc..ea2fb63bb095 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -26,6 +26,7 @@
#include <linux/compiler.h>
#include <linux/pci.h>
#include <linux/aer.h>
+#include <linux/delay.h>
#include <linux/bitmap.h>
#include "ice_devids.h"
#include "ice_type.h"
diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
new file mode 100644
index 000000000000..885fa3c6fec4
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#ifndef _ICE_ADMINQ_CMD_H_
+#define _ICE_ADMINQ_CMD_H_
+
+/* This header file defines the Admin Queue commands, error codes and
+ * descriptor format. It is shared between Firmware and Software.
+ */
+
+struct ice_aqc_generic {
+ __le32 param0;
+ __le32 param1;
+ __le32 addr_high;
+ __le32 addr_low;
+};
+
+/* Get version (direct 0x0001) */
+struct ice_aqc_get_ver {
+ __le32 rom_ver;
+ __le32 fw_build;
+ u8 fw_branch;
+ u8 fw_major;
+ u8 fw_minor;
+ u8 fw_patch;
+ u8 api_branch;
+ u8 api_major;
+ u8 api_minor;
+ u8 api_patch;
+};
+
+/* Queue Shutdown (direct 0x0003) */
+struct ice_aqc_q_shutdown {
+#define ICE_AQC_DRIVER_UNLOADING BIT(0)
+ __le32 driver_unloading;
+ u8 reserved[12];
+};
+
+/**
+ * struct ice_aq_desc - Admin Queue (AQ) descriptor
+ * @flags: ICE_AQ_FLAG_* flags
+ * @opcode: AQ command opcode
+ * @datalen: length in bytes of indirect/external data buffer
+ * @retval: return value from firmware
+ * @cookie_h: opaque data high-half
+ * @cookie_l: opaque data low-half
+ * @params: command-specific parameters
+ *
+ * Descriptor format for commands the driver posts on the Admin Transmit Queue
+ * (ATQ). The firmware writes back onto the command descriptor and returns
+ * the result of the command. Asynchronous events that are not an immediate
+ * result of the command are written to the Admin Receive Queue (ARQ) using
+ * the same descriptor format. Descriptors are in little-endian notation with
+ * 32-bit words.
+ */
+struct ice_aq_desc {
+ __le16 flags;
+ __le16 opcode;
+ __le16 datalen;
+ __le16 retval;
+ __le32 cookie_high;
+ __le32 cookie_low;
+ union {
+ u8 raw[16];
+ struct ice_aqc_generic generic;
+ struct ice_aqc_get_ver get_ver;
+ struct ice_aqc_q_shutdown q_shutdown;
+ } params;
+};
+
+/* FW defined boundary for a large buffer, 4k >= Large buffer > 512 bytes */
+#define ICE_AQ_LG_BUF 512
+
+#define ICE_AQ_FLAG_LB_S 9
+#define ICE_AQ_FLAG_BUF_S 12
+#define ICE_AQ_FLAG_SI_S 13
+
+#define ICE_AQ_FLAG_LB BIT(ICE_AQ_FLAG_LB_S) /* 0x200 */
+#define ICE_AQ_FLAG_BUF BIT(ICE_AQ_FLAG_BUF_S) /* 0x1000 */
+#define ICE_AQ_FLAG_SI BIT(ICE_AQ_FLAG_SI_S) /* 0x2000 */
+
+/* error codes */
+enum ice_aq_err {
+ ICE_AQ_RC_OK = 0, /* success */
+};
+
+/* Admin Queue command opcodes */
+enum ice_adminq_opc {
+ /* AQ commands */
+ ice_aqc_opc_get_ver = 0x0001,
+ ice_aqc_opc_q_shutdown = 0x0003,
+};
+
+#endif /* _ICE_ADMINQ_CMD_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
new file mode 100644
index 000000000000..d980f0518744
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#include "ice_common.h"
+#include "ice_adminq_cmd.h"
+
+/**
+ * ice_debug_cq
+ * @hw: pointer to the hardware structure
+ * @mask: debug mask
+ * @desc: pointer to control queue descriptor
+ * @buf: pointer to command buffer
+ * @buf_len: max length of buf
+ *
+ * Dumps debug log about control command with descriptor contents.
+ */
+void ice_debug_cq(struct ice_hw *hw, u32 __maybe_unused mask, void *desc,
+ void *buf, u16 buf_len)
+{
+ struct ice_aq_desc *cq_desc = (struct ice_aq_desc *)desc;
+ u16 len;
+
+#ifndef CONFIG_DYNAMIC_DEBUG
+ if (!(mask & hw->debug_mask))
+ return;
+#endif
+
+ if (!desc)
+ return;
+
+ len = le16_to_cpu(cq_desc->datalen);
+
+ ice_debug(hw, mask,
+ "CQ CMD: opcode 0x%04X, flags 0x%04X, datalen 0x%04X, retval 0x%04X\n",
+ le16_to_cpu(cq_desc->opcode),
+ le16_to_cpu(cq_desc->flags),
+ le16_to_cpu(cq_desc->datalen), le16_to_cpu(cq_desc->retval));
+ ice_debug(hw, mask, "\tcookie (h,l) 0x%08X 0x%08X\n",
+ le32_to_cpu(cq_desc->cookie_high),
+ le32_to_cpu(cq_desc->cookie_low));
+ ice_debug(hw, mask, "\tparam (0,1) 0x%08X 0x%08X\n",
+ le32_to_cpu(cq_desc->params.generic.param0),
+ le32_to_cpu(cq_desc->params.generic.param1));
+ ice_debug(hw, mask, "\taddr (h,l) 0x%08X 0x%08X\n",
+ le32_to_cpu(cq_desc->params.generic.addr_high),
+ le32_to_cpu(cq_desc->params.generic.addr_low));
+ if (buf && cq_desc->datalen != 0) {
+ ice_debug(hw, mask, "Buffer:\n");
+ if (buf_len < len)
+ len = buf_len;
+
+ ice_debug_array(hw, mask, 16, 1, (u8 *)buf, len);
+ }
+}
+
+/* FW Admin Queue command wrappers */
+
+/**
+ * ice_aq_send_cmd - send FW Admin Queue command to FW Admin Queue
+ * @hw: pointer to the hw struct
+ * @desc: descriptor describing the command
+ * @buf: buffer to use for indirect commands (NULL for direct commands)
+ * @buf_size: size of buffer for indirect commands (0 for direct commands)
+ * @cd: pointer to command details structure
+ *
+ * Helper function to send FW Admin Queue commands to the FW Admin Queue.
+ */
+enum ice_status
+ice_aq_send_cmd(struct ice_hw *hw, struct ice_aq_desc *desc, void *buf,
+ u16 buf_size, struct ice_sq_cd *cd)
+{
+ return ice_sq_send_cmd(hw, &hw->adminq, desc, buf, buf_size, cd);
+}
+
+/**
+ * ice_aq_get_fw_ver
+ * @hw: pointer to the hw struct
+ * @cd: pointer to command details structure or NULL
+ *
+ * Get the firmware version (0x0001) from the admin queue commands
+ */
+enum ice_status ice_aq_get_fw_ver(struct ice_hw *hw, struct ice_sq_cd *cd)
+{
+ struct ice_aqc_get_ver *resp;
+ struct ice_aq_desc desc;
+ enum ice_status status;
+
+ resp = &desc.params.get_ver;
+
+ ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_ver);
+
+ status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
+
+ if (!status) {
+ hw->fw_branch = resp->fw_branch;
+ hw->fw_maj_ver = resp->fw_major;
+ hw->fw_min_ver = resp->fw_minor;
+ hw->fw_patch = resp->fw_patch;
+ hw->fw_build = le32_to_cpu(resp->fw_build);
+ hw->api_branch = resp->api_branch;
+ hw->api_maj_ver = resp->api_major;
+ hw->api_min_ver = resp->api_minor;
+ hw->api_patch = resp->api_patch;
+ }
+
+ return status;
+}
+
+/**
+ * ice_aq_q_shutdown
+ * @hw: pointer to the hw struct
+ * @unloading: is the driver unloading itself
+ *
+ * Tell the Firmware that we're shutting down the AdminQ and whether
+ * or not the driver is unloading as well (0x0003).
+ */
+enum ice_status ice_aq_q_shutdown(struct ice_hw *hw, bool unloading)
+{
+ struct ice_aqc_q_shutdown *cmd;
+ struct ice_aq_desc desc;
+
+ cmd = &desc.params.q_shutdown;
+
+ ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_q_shutdown);
+
+ if (unloading)
+ cmd->driver_unloading = cpu_to_le32(ICE_AQC_DRIVER_UNLOADING);
+
+ return ice_aq_send_cmd(hw, &desc, NULL, 0, NULL);
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
new file mode 100644
index 000000000000..1e3caecc38c6
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#ifndef _ICE_COMMON_H_
+#define _ICE_COMMON_H_
+
+#include "ice.h"
+#include "ice_type.h"
+
+void ice_debug_cq(struct ice_hw *hw, u32 mask, void *desc, void *buf,
+ u16 buf_len);
+enum ice_status ice_init_all_ctrlq(struct ice_hw *hw);
+void ice_shutdown_all_ctrlq(struct ice_hw *hw);
+enum ice_status
+ice_sq_send_cmd(struct ice_hw *hw, struct ice_ctl_q_info *cq,
+ struct ice_aq_desc *desc, void *buf, u16 buf_size,
+ struct ice_sq_cd *cd);
+bool ice_check_sq_alive(struct ice_hw *hw, struct ice_ctl_q_info *cq);
+enum ice_status ice_aq_q_shutdown(struct ice_hw *hw, bool unloading);
+void ice_fill_dflt_direct_cmd_desc(struct ice_aq_desc *desc, u16 opcode);
+enum ice_status
+ice_aq_send_cmd(struct ice_hw *hw, struct ice_aq_desc *desc,
+ void *buf, u16 buf_size, struct ice_sq_cd *cd);
+enum ice_status ice_aq_get_fw_ver(struct ice_hw *hw, struct ice_sq_cd *cd);
+#endif /* _ICE_COMMON_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.c b/drivers/net/ethernet/intel/ice/ice_controlq.c
new file mode 100644
index 000000000000..b1143d66d4bd
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_controlq.c
@@ -0,0 +1,979 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#include "ice_common.h"
+
+/**
+ * ice_adminq_init_regs - Initialize AdminQ registers
+ * @hw: pointer to the hardware structure
+ *
+ * This assumes the alloc_sq and alloc_rq functions have already been called
+ */
+static void ice_adminq_init_regs(struct ice_hw *hw)
+{
+ struct ice_ctl_q_info *cq = &hw->adminq;
+
+ cq->sq.head = PF_FW_ATQH;
+ cq->sq.tail = PF_FW_ATQT;
+ cq->sq.len = PF_FW_ATQLEN;
+ cq->sq.bah = PF_FW_ATQBAH;
+ cq->sq.bal = PF_FW_ATQBAL;
+ cq->sq.len_mask = PF_FW_ATQLEN_ATQLEN_M;
+ cq->sq.len_ena_mask = PF_FW_ATQLEN_ATQENABLE_M;
+ cq->sq.head_mask = PF_FW_ATQH_ATQH_M;
+
+ cq->rq.head = PF_FW_ARQH;
+ cq->rq.tail = PF_FW_ARQT;
+ cq->rq.len = PF_FW_ARQLEN;
+ cq->rq.bah = PF_FW_ARQBAH;
+ cq->rq.bal = PF_FW_ARQBAL;
+ cq->rq.len_mask = PF_FW_ARQLEN_ARQLEN_M;
+ cq->rq.len_ena_mask = PF_FW_ARQLEN_ARQENABLE_M;
+ cq->rq.head_mask = PF_FW_ARQH_ARQH_M;
+}
+
+/**
+ * ice_check_sq_alive
+ * @hw: pointer to the hw struct
+ * @cq: pointer to the specific Control queue
+ *
+ * Returns true if Queue is enabled else false.
+ */
+bool ice_check_sq_alive(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ /* check both queue-length and queue-enable fields */
+ if (cq->sq.len && cq->sq.len_mask && cq->sq.len_ena_mask)
+ return (rd32(hw, cq->sq.len) & (cq->sq.len_mask |
+ cq->sq.len_ena_mask)) ==
+ (cq->num_sq_entries | cq->sq.len_ena_mask);
+
+ return false;
+}
+
+/**
+ * ice_alloc_ctrlq_sq_ring - Allocate Control Transmit Queue (ATQ) rings
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ */
+static enum ice_status
+ice_alloc_ctrlq_sq_ring(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ size_t size = cq->num_sq_entries * sizeof(struct ice_aq_desc);
+
+ cq->sq.desc_buf.va = dmam_alloc_coherent(ice_hw_to_dev(hw), size,
+ &cq->sq.desc_buf.pa,
+ GFP_KERNEL | __GFP_ZERO);
+ if (!cq->sq.desc_buf.va)
+ return ICE_ERR_NO_MEMORY;
+ cq->sq.desc_buf.size = size;
+
+ cq->sq.cmd_buf = devm_kcalloc(ice_hw_to_dev(hw), cq->num_sq_entries,
+ sizeof(struct ice_sq_cd), GFP_KERNEL);
+ if (!cq->sq.cmd_buf) {
+ dmam_free_coherent(ice_hw_to_dev(hw), cq->sq.desc_buf.size,
+ cq->sq.desc_buf.va, cq->sq.desc_buf.pa);
+ cq->sq.desc_buf.va = NULL;
+ cq->sq.desc_buf.pa = 0;
+ cq->sq.desc_buf.size = 0;
+ return ICE_ERR_NO_MEMORY;
+ }
+
+ return 0;
+}
+
+/**
+ * ice_alloc_ctrlq_rq_ring - Allocate Control Receive Queue (ARQ) rings
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ */
+static enum ice_status
+ice_alloc_ctrlq_rq_ring(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ size_t size = cq->num_rq_entries * sizeof(struct ice_aq_desc);
+
+ cq->rq.desc_buf.va = dmam_alloc_coherent(ice_hw_to_dev(hw), size,
+ &cq->rq.desc_buf.pa,
+ GFP_KERNEL | __GFP_ZERO);
+ if (!cq->rq.desc_buf.va)
+ return ICE_ERR_NO_MEMORY;
+ cq->rq.desc_buf.size = size;
+ return 0;
+}
+
+/**
+ * ice_free_ctrlq_sq_ring - Free Control Transmit Queue (ATQ) rings
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * This assumes the posted send buffers have already been cleaned
+ * and de-allocated
+ */
+static void ice_free_ctrlq_sq_ring(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ dmam_free_coherent(ice_hw_to_dev(hw), cq->sq.desc_buf.size,
+ cq->sq.desc_buf.va, cq->sq.desc_buf.pa);
+ cq->sq.desc_buf.va = NULL;
+ cq->sq.desc_buf.pa = 0;
+ cq->sq.desc_buf.size = 0;
+}
+
+/**
+ * ice_free_ctrlq_rq_ring - Free Control Receive Queue (ARQ) rings
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * This assumes the posted receive buffers have already been cleaned
+ * and de-allocated
+ */
+static void ice_free_ctrlq_rq_ring(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ dmam_free_coherent(ice_hw_to_dev(hw), cq->rq.desc_buf.size,
+ cq->rq.desc_buf.va, cq->rq.desc_buf.pa);
+ cq->rq.desc_buf.va = NULL;
+ cq->rq.desc_buf.pa = 0;
+ cq->rq.desc_buf.size = 0;
+}
+
+/**
+ * ice_alloc_rq_bufs - Allocate pre-posted buffers for the ARQ
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ */
+static enum ice_status
+ice_alloc_rq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ int i;
+
+ /* We'll be allocating the buffer info memory first, then we can
+ * allocate the mapped buffers for the event processing
+ */
+ cq->rq.dma_head = devm_kcalloc(ice_hw_to_dev(hw), cq->num_rq_entries,
+ sizeof(cq->rq.desc_buf), GFP_KERNEL);
+ if (!cq->rq.dma_head)
+ return ICE_ERR_NO_MEMORY;
+ cq->rq.r.rq_bi = (struct ice_dma_mem *)cq->rq.dma_head;
+
+ /* allocate the mapped buffers */
+ for (i = 0; i < cq->num_rq_entries; i++) {
+ struct ice_aq_desc *desc;
+ struct ice_dma_mem *bi;
+
+ bi = &cq->rq.r.rq_bi[i];
+ bi->va = dmam_alloc_coherent(ice_hw_to_dev(hw),
+ cq->rq_buf_size, &bi->pa,
+ GFP_KERNEL | __GFP_ZERO);
+ if (!bi->va)
+ goto unwind_alloc_rq_bufs;
+ bi->size = cq->rq_buf_size;
+
+ /* now configure the descriptors for use */
+ desc = ICE_CTL_Q_DESC(cq->rq, i);
+
+ desc->flags = cpu_to_le16(ICE_AQ_FLAG_BUF);
+ if (cq->rq_buf_size > ICE_AQ_LG_BUF)
+ desc->flags |= cpu_to_le16(ICE_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(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;
+ }
+ return 0;
+
+unwind_alloc_rq_bufs:
+ /* don't try to free the one that failed... */
+ i--;
+ for (; i >= 0; i--) {
+ dmam_free_coherent(ice_hw_to_dev(hw), cq->rq.r.rq_bi[i].size,
+ cq->rq.r.rq_bi[i].va, cq->rq.r.rq_bi[i].pa);
+ cq->rq.r.rq_bi[i].va = NULL;
+ cq->rq.r.rq_bi[i].pa = 0;
+ cq->rq.r.rq_bi[i].size = 0;
+ }
+ devm_kfree(ice_hw_to_dev(hw), cq->rq.dma_head);
+
+ return ICE_ERR_NO_MEMORY;
+}
+
+/**
+ * ice_alloc_sq_bufs - Allocate empty buffer structs for the ATQ
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ */
+static enum ice_status
+ice_alloc_sq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ int i;
+
+ /* No mapped memory needed yet, just the buffer info structures */
+ cq->sq.dma_head = devm_kcalloc(ice_hw_to_dev(hw), cq->num_sq_entries,
+ sizeof(cq->sq.desc_buf), GFP_KERNEL);
+ if (!cq->sq.dma_head)
+ return ICE_ERR_NO_MEMORY;
+ cq->sq.r.sq_bi = (struct ice_dma_mem *)cq->sq.dma_head;
+
+ /* allocate the mapped buffers */
+ for (i = 0; i < cq->num_sq_entries; i++) {
+ struct ice_dma_mem *bi;
+
+ bi = &cq->sq.r.sq_bi[i];
+ bi->va = dmam_alloc_coherent(ice_hw_to_dev(hw),
+ cq->sq_buf_size, &bi->pa,
+ GFP_KERNEL | __GFP_ZERO);
+ if (!bi->va)
+ goto unwind_alloc_sq_bufs;
+ bi->size = cq->sq_buf_size;
+ }
+ return 0;
+
+unwind_alloc_sq_bufs:
+ /* don't try to free the one that failed... */
+ i--;
+ for (; i >= 0; i--) {
+ dmam_free_coherent(ice_hw_to_dev(hw), cq->sq.r.sq_bi[i].size,
+ cq->sq.r.sq_bi[i].va, cq->sq.r.sq_bi[i].pa);
+ cq->sq.r.sq_bi[i].va = NULL;
+ cq->sq.r.sq_bi[i].pa = 0;
+ cq->sq.r.sq_bi[i].size = 0;
+ }
+ devm_kfree(ice_hw_to_dev(hw), cq->sq.dma_head);
+
+ return ICE_ERR_NO_MEMORY;
+}
+
+/**
+ * ice_free_rq_bufs - Free ARQ buffer info elements
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ */
+static void ice_free_rq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ int i;
+
+ /* free descriptors */
+ for (i = 0; i < cq->num_rq_entries; i++) {
+ dmam_free_coherent(ice_hw_to_dev(hw), cq->rq.r.rq_bi[i].size,
+ cq->rq.r.rq_bi[i].va, cq->rq.r.rq_bi[i].pa);
+ cq->rq.r.rq_bi[i].va = NULL;
+ cq->rq.r.rq_bi[i].pa = 0;
+ cq->rq.r.rq_bi[i].size = 0;
+ }
+
+ /* free the dma header */
+ devm_kfree(ice_hw_to_dev(hw), cq->rq.dma_head);
+}
+
+/**
+ * ice_free_sq_bufs - Free ATQ buffer info elements
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ */
+static void ice_free_sq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ int i;
+
+ /* only unmap if the address is non-NULL */
+ for (i = 0; i < cq->num_sq_entries; i++)
+ if (cq->sq.r.sq_bi[i].pa) {
+ dmam_free_coherent(ice_hw_to_dev(hw),
+ cq->sq.r.sq_bi[i].size,
+ cq->sq.r.sq_bi[i].va,
+ cq->sq.r.sq_bi[i].pa);
+ cq->sq.r.sq_bi[i].va = NULL;
+ cq->sq.r.sq_bi[i].pa = 0;
+ cq->sq.r.sq_bi[i].size = 0;
+ }
+
+ /* free the buffer info list */
+ devm_kfree(ice_hw_to_dev(hw), cq->sq.cmd_buf);
+
+ /* free the dma header */
+ devm_kfree(ice_hw_to_dev(hw), cq->sq.dma_head);
+}
+
+/**
+ * ice_cfg_sq_regs - configure Control ATQ registers
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * Configure base address and length registers for the transmit queue
+ */
+static enum ice_status
+ice_cfg_sq_regs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ u32 reg = 0;
+
+ /* Clear Head and Tail */
+ wr32(hw, cq->sq.head, 0);
+ wr32(hw, cq->sq.tail, 0);
+
+ /* set starting point */
+ wr32(hw, cq->sq.len, (cq->num_sq_entries | cq->sq.len_ena_mask));
+ wr32(hw, cq->sq.bal, lower_32_bits(cq->sq.desc_buf.pa));
+ wr32(hw, cq->sq.bah, upper_32_bits(cq->sq.desc_buf.pa));
+
+ /* Check one register to verify that config was applied */
+ reg = rd32(hw, cq->sq.bal);
+ if (reg != lower_32_bits(cq->sq.desc_buf.pa))
+ return ICE_ERR_AQ_ERROR;
+
+ return 0;
+}
+
+/**
+ * ice_cfg_rq_regs - configure Control ARQ register
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * Configure base address and length registers for the receive (event q)
+ */
+static enum ice_status
+ice_cfg_rq_regs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ u32 reg = 0;
+
+ /* Clear Head and Tail */
+ wr32(hw, cq->rq.head, 0);
+ wr32(hw, cq->rq.tail, 0);
+
+ /* set starting point */
+ wr32(hw, cq->rq.len, (cq->num_rq_entries | cq->rq.len_ena_mask));
+ wr32(hw, cq->rq.bal, lower_32_bits(cq->rq.desc_buf.pa));
+ wr32(hw, cq->rq.bah, upper_32_bits(cq->rq.desc_buf.pa));
+
+ /* Update tail in the HW to post pre-allocated buffers */
+ wr32(hw, cq->rq.tail, (u32)(cq->num_rq_entries - 1));
+
+ /* Check one register to verify that config was applied */
+ reg = rd32(hw, cq->rq.bal);
+ if (reg != lower_32_bits(cq->rq.desc_buf.pa))
+ return ICE_ERR_AQ_ERROR;
+
+ return 0;
+}
+
+/**
+ * ice_init_sq - main initialization routine for Control ATQ
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * This is the main initialization routine for the Control Send Queue
+ * Prior to calling this function, drivers *MUST* set the following fields
+ * in the cq->structure:
+ * - cq->num_sq_entries
+ * - cq->sq_buf_size
+ *
+ * Do *NOT* hold the lock when calling this as the memory allocation routines
+ * called are not going to be atomic context safe
+ */
+static enum ice_status ice_init_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ enum ice_status ret_code;
+
+ if (cq->sq.count > 0) {
+ /* queue already initialized */
+ ret_code = ICE_ERR_NOT_READY;
+ goto init_ctrlq_exit;
+ }
+
+ /* verify input for valid configuration */
+ if (!cq->num_sq_entries || !cq->sq_buf_size) {
+ ret_code = ICE_ERR_CFG;
+ goto init_ctrlq_exit;
+ }
+
+ cq->sq.next_to_use = 0;
+ cq->sq.next_to_clean = 0;
+
+ /* allocate the ring memory */
+ ret_code = ice_alloc_ctrlq_sq_ring(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_exit;
+
+ /* allocate buffers in the rings */
+ ret_code = ice_alloc_sq_bufs(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_free_rings;
+
+ /* initialize base registers */
+ ret_code = ice_cfg_sq_regs(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_free_rings;
+
+ /* success! */
+ cq->sq.count = cq->num_sq_entries;
+ goto init_ctrlq_exit;
+
+init_ctrlq_free_rings:
+ ice_free_ctrlq_sq_ring(hw, cq);
+
+init_ctrlq_exit:
+ return ret_code;
+}
+
+/**
+ * ice_init_rq - initialize ARQ
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * The main initialization routine for the Admin Receive (Event) Queue.
+ * Prior to calling this function, drivers *MUST* set the following fields
+ * in the cq->structure:
+ * - cq->num_rq_entries
+ * - cq->rq_buf_size
+ *
+ * Do *NOT* hold the lock when calling this as the memory allocation routines
+ * called are not going to be atomic context safe
+ */
+static enum ice_status ice_init_rq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ enum ice_status ret_code;
+
+ if (cq->rq.count > 0) {
+ /* queue already initialized */
+ ret_code = ICE_ERR_NOT_READY;
+ goto init_ctrlq_exit;
+ }
+
+ /* verify input for valid configuration */
+ if (!cq->num_rq_entries || !cq->rq_buf_size) {
+ ret_code = ICE_ERR_CFG;
+ goto init_ctrlq_exit;
+ }
+
+ cq->rq.next_to_use = 0;
+ cq->rq.next_to_clean = 0;
+
+ /* allocate the ring memory */
+ ret_code = ice_alloc_ctrlq_rq_ring(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_exit;
+
+ /* allocate buffers in the rings */
+ ret_code = ice_alloc_rq_bufs(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_free_rings;
+
+ /* initialize base registers */
+ ret_code = ice_cfg_rq_regs(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_free_rings;
+
+ /* success! */
+ cq->rq.count = cq->num_rq_entries;
+ goto init_ctrlq_exit;
+
+init_ctrlq_free_rings:
+ ice_free_ctrlq_rq_ring(hw, cq);
+
+init_ctrlq_exit:
+ return ret_code;
+}
+
+/**
+ * ice_shutdown_sq - shutdown the Control ATQ
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * The main shutdown routine for the Control Transmit Queue
+ */
+static enum ice_status
+ice_shutdown_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ enum ice_status ret_code = 0;
+
+ mutex_lock(&cq->sq_lock);
+
+ if (!cq->sq.count) {
+ ret_code = ICE_ERR_NOT_READY;
+ goto shutdown_sq_out;
+ }
+
+ /* Stop firmware AdminQ processing */
+ wr32(hw, cq->sq.head, 0);
+ wr32(hw, cq->sq.tail, 0);
+ wr32(hw, cq->sq.len, 0);
+ wr32(hw, cq->sq.bal, 0);
+ wr32(hw, cq->sq.bah, 0);
+
+ cq->sq.count = 0; /* to indicate uninitialized queue */
+
+ /* free ring buffers and the ring itself */
+ ice_free_sq_bufs(hw, cq);
+ ice_free_ctrlq_sq_ring(hw, cq);
+
+shutdown_sq_out:
+ mutex_unlock(&cq->sq_lock);
+ return ret_code;
+}
+
+/**
+ * ice_aq_ver_check - Check the reported AQ API version.
+ * @fw_branch: The "branch" of FW, typically describes the device type
+ * @fw_major: The major version of the FW API
+ * @fw_minor: The minor version increment of the FW API
+ *
+ * Checks if the driver should load on a given AQ API version.
+ *
+ * Return: 'true' iff the driver should attempt to load. 'false' otherwise.
+ */
+static bool ice_aq_ver_check(u8 fw_branch, u8 fw_major, u8 fw_minor)
+{
+ if (fw_branch != EXP_FW_API_VER_BRANCH)
+ return false;
+ if (fw_major != EXP_FW_API_VER_MAJOR)
+ return false;
+ if (fw_minor != EXP_FW_API_VER_MINOR)
+ return false;
+ return true;
+}
+
+/**
+ * ice_shutdown_rq - shutdown Control ARQ
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * The main shutdown routine for the Control Receive Queue
+ */
+static enum ice_status
+ice_shutdown_rq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ enum ice_status ret_code = 0;
+
+ mutex_lock(&cq->rq_lock);
+
+ if (!cq->rq.count) {
+ ret_code = ICE_ERR_NOT_READY;
+ goto shutdown_rq_out;
+ }
+
+ /* Stop Control Queue processing */
+ wr32(hw, cq->rq.head, 0);
+ wr32(hw, cq->rq.tail, 0);
+ wr32(hw, cq->rq.len, 0);
+ wr32(hw, cq->rq.bal, 0);
+ wr32(hw, cq->rq.bah, 0);
+
+ /* set rq.count to 0 to indicate uninitialized queue */
+ cq->rq.count = 0;
+
+ /* free ring buffers and the ring itself */
+ ice_free_rq_bufs(hw, cq);
+ ice_free_ctrlq_rq_ring(hw, cq);
+
+shutdown_rq_out:
+ mutex_unlock(&cq->rq_lock);
+ return ret_code;
+}
+
+/**
+ * ice_init_check_adminq - Check version for Admin Queue to know if its alive
+ * @hw: pointer to the hardware structure
+ */
+static enum ice_status ice_init_check_adminq(struct ice_hw *hw)
+{
+ struct ice_ctl_q_info *cq = &hw->adminq;
+ enum ice_status status;
+
+ status = ice_aq_get_fw_ver(hw, NULL);
+ if (status)
+ goto init_ctrlq_free_rq;
+
+ if (!ice_aq_ver_check(hw->api_branch, hw->api_maj_ver,
+ hw->api_min_ver)) {
+ status = ICE_ERR_FW_API_VER;
+ goto init_ctrlq_free_rq;
+ }
+
+ return 0;
+
+init_ctrlq_free_rq:
+ ice_shutdown_rq(hw, cq);
+ ice_shutdown_sq(hw, cq);
+ mutex_destroy(&cq->sq_lock);
+ mutex_destroy(&cq->rq_lock);
+ return status;
+}
+
+/**
+ * ice_init_ctrlq - main initialization routine for any control Queue
+ * @hw: pointer to the hardware structure
+ * @q_type: specific Control queue type
+ *
+ * Prior to calling this function, drivers *MUST* set the following fields
+ * in the cq->structure:
+ * - cq->num_sq_entries
+ * - cq->num_rq_entries
+ * - cq->rq_buf_size
+ * - cq->sq_buf_size
+ *
+ */
+static enum ice_status ice_init_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
+{
+ struct ice_ctl_q_info *cq;
+ enum ice_status ret_code;
+
+ switch (q_type) {
+ case ICE_CTL_Q_ADMIN:
+ ice_adminq_init_regs(hw);
+ cq = &hw->adminq;
+ break;
+ default:
+ return ICE_ERR_PARAM;
+ }
+ cq->qtype = q_type;
+
+ /* verify input for valid configuration */
+ if (!cq->num_rq_entries || !cq->num_sq_entries ||
+ !cq->rq_buf_size || !cq->sq_buf_size) {
+ return ICE_ERR_CFG;
+ }
+ mutex_init(&cq->sq_lock);
+ mutex_init(&cq->rq_lock);
+
+ /* setup SQ command write back timeout */
+ cq->sq_cmd_timeout = ICE_CTL_Q_SQ_CMD_TIMEOUT;
+
+ /* allocate the ATQ */
+ ret_code = ice_init_sq(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_destroy_locks;
+
+ /* allocate the ARQ */
+ ret_code = ice_init_rq(hw, cq);
+ if (ret_code)
+ goto init_ctrlq_free_sq;
+
+ /* success! */
+ return 0;
+
+init_ctrlq_free_sq:
+ ice_shutdown_sq(hw, cq);
+init_ctrlq_destroy_locks:
+ mutex_destroy(&cq->sq_lock);
+ mutex_destroy(&cq->rq_lock);
+ return ret_code;
+}
+
+/**
+ * ice_init_all_ctrlq - main initialization routine for all control queues
+ * @hw: pointer to the hardware structure
+ *
+ * Prior to calling this function, drivers *MUST* set the following fields
+ * in the cq->structure for all control queues:
+ * - cq->num_sq_entries
+ * - cq->num_rq_entries
+ * - cq->rq_buf_size
+ * - cq->sq_buf_size
+ */
+enum ice_status ice_init_all_ctrlq(struct ice_hw *hw)
+{
+ enum ice_status ret_code;
+
+ /* Init FW admin queue */
+ ret_code = ice_init_ctrlq(hw, ICE_CTL_Q_ADMIN);
+ if (ret_code)
+ return ret_code;
+
+ return ice_init_check_adminq(hw);
+}
+
+/**
+ * ice_shutdown_ctrlq - shutdown routine for any control queue
+ * @hw: pointer to the hardware structure
+ * @q_type: specific Control queue type
+ */
+static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
+{
+ struct ice_ctl_q_info *cq;
+
+ switch (q_type) {
+ case ICE_CTL_Q_ADMIN:
+ cq = &hw->adminq;
+ if (ice_check_sq_alive(hw, cq))
+ ice_aq_q_shutdown(hw, true);
+ break;
+ default:
+ return;
+ }
+
+ ice_shutdown_sq(hw, cq);
+ ice_shutdown_rq(hw, cq);
+ mutex_destroy(&cq->sq_lock);
+ mutex_destroy(&cq->rq_lock);
+}
+
+/**
+ * ice_shutdown_all_ctrlq - shutdown routine for all control queues
+ * @hw: pointer to the hardware structure
+ */
+void ice_shutdown_all_ctrlq(struct ice_hw *hw)
+{
+ /* Shutdown FW admin queue */
+ ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN);
+}
+
+/**
+ * ice_clean_sq - cleans Admin send queue (ATQ)
+ * @hw: pointer to the hardware structure
+ * @cq: pointer to the specific Control queue
+ *
+ * returns the number of free desc
+ */
+static u16 ice_clean_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ struct ice_ctl_q_ring *sq = &cq->sq;
+ u16 ntc = sq->next_to_clean;
+ struct ice_sq_cd *details;
+ struct ice_aq_desc *desc;
+
+ desc = ICE_CTL_Q_DESC(*sq, ntc);
+ details = ICE_CTL_Q_DETAILS(*sq, ntc);
+
+ while (rd32(hw, cq->sq.head) != ntc) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "ntc %d head %d.\n", ntc, rd32(hw, cq->sq.head));
+ memset(desc, 0, sizeof(*desc));
+ memset(details, 0, sizeof(*details));
+ ntc++;
+ if (ntc == sq->count)
+ ntc = 0;
+ desc = ICE_CTL_Q_DESC(*sq, ntc);
+ details = ICE_CTL_Q_DETAILS(*sq, ntc);
+ }
+
+ sq->next_to_clean = ntc;
+
+ return ICE_CTL_Q_DESC_UNUSED(sq);
+}
+
+/**
+ * ice_sq_done - check if FW has processed the Admin Send Queue (ATQ)
+ * @hw: pointer to the hw struct
+ * @cq: pointer to the specific Control queue
+ *
+ * Returns true if the firmware has processed all descriptors on the
+ * admin send queue. Returns false if there are still requests pending.
+ */
+static bool ice_sq_done(struct ice_hw *hw, struct ice_ctl_q_info *cq)
+{
+ /* AQ designers suggest use of head for better
+ * timing reliability than DD bit
+ */
+ return rd32(hw, cq->sq.head) == cq->sq.next_to_use;
+}
+
+/**
+ * ice_sq_send_cmd - send command to Control Queue (ATQ)
+ * @hw: pointer to the hw struct
+ * @cq: pointer to the specific Control queue
+ * @desc: prefilled descriptor describing the command (non DMA mem)
+ * @buf: buffer to use for indirect commands (or NULL for direct commands)
+ * @buf_size: size of buffer for indirect commands (or 0 for direct commands)
+ * @cd: pointer to command details structure
+ *
+ * This is the main send command routine for the ATQ. It runs the q,
+ * cleans the queue, etc.
+ */
+enum ice_status
+ice_sq_send_cmd(struct ice_hw *hw, struct ice_ctl_q_info *cq,
+ struct ice_aq_desc *desc, void *buf, u16 buf_size,
+ struct ice_sq_cd *cd)
+{
+ struct ice_dma_mem *dma_buf = NULL;
+ struct ice_aq_desc *desc_on_ring;
+ bool cmd_completed = false;
+ enum ice_status status = 0;
+ struct ice_sq_cd *details;
+ u32 total_delay = 0;
+ u16 retval = 0;
+ u32 val = 0;
+
+ mutex_lock(&cq->sq_lock);
+
+ cq->sq_last_status = ICE_AQ_RC_OK;
+
+ if (!cq->sq.count) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "Control Send queue not initialized.\n");
+ status = ICE_ERR_AQ_EMPTY;
+ goto sq_send_command_error;
+ }
+
+ if ((buf && !buf_size) || (!buf && buf_size)) {
+ status = ICE_ERR_PARAM;
+ goto sq_send_command_error;
+ }
+
+ if (buf) {
+ if (buf_size > cq->sq_buf_size) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "Invalid buffer size for Control Send queue: %d.\n",
+ buf_size);
+ status = ICE_ERR_INVAL_SIZE;
+ goto sq_send_command_error;
+ }
+
+ desc->flags |= cpu_to_le16(ICE_AQ_FLAG_BUF);
+ if (buf_size > ICE_AQ_LG_BUF)
+ desc->flags |= cpu_to_le16(ICE_AQ_FLAG_LB);
+ }
+
+ val = rd32(hw, cq->sq.head);
+ if (val >= cq->num_sq_entries) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "head overrun at %d in the Control Send Queue ring\n",
+ val);
+ status = ICE_ERR_AQ_EMPTY;
+ goto sq_send_command_error;
+ }
+
+ details = ICE_CTL_Q_DETAILS(cq->sq, cq->sq.next_to_use);
+ if (cd)
+ memcpy(details, cd, sizeof(*details));
+ else
+ memset(details, 0, sizeof(*details));
+
+ /* Call clean and check queue available function to reclaim the
+ * descriptors that were processed by FW/MBX; 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 (ice_clean_sq(hw, cq) == 0) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "Error: Control Send Queue is full.\n");
+ status = ICE_ERR_AQ_FULL;
+ goto sq_send_command_error;
+ }
+
+ /* initialize the temp desc pointer with the right desc */
+ desc_on_ring = ICE_CTL_Q_DESC(cq->sq, cq->sq.next_to_use);
+
+ /* if the desc is available copy the temp desc to the right place */
+ memcpy(desc_on_ring, desc, sizeof(*desc_on_ring));
+
+ /* if buf is not NULL assume indirect command */
+ if (buf) {
+ dma_buf = &cq->sq.r.sq_bi[cq->sq.next_to_use];
+ /* copy the user buf into the respective DMA buf */
+ memcpy(dma_buf->va, buf, buf_size);
+ desc_on_ring->datalen = cpu_to_le16(buf_size);
+
+ /* Update the address values in the desc with the pa value
+ * for respective buffer
+ */
+ desc_on_ring->params.generic.addr_high =
+ cpu_to_le32(upper_32_bits(dma_buf->pa));
+ desc_on_ring->params.generic.addr_low =
+ cpu_to_le32(lower_32_bits(dma_buf->pa));
+ }
+
+ /* Debug desc and buffer */
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "ATQ: Control Send queue desc and buffer:\n");
+
+ ice_debug_cq(hw, ICE_DBG_AQ_CMD, (void *)desc_on_ring, buf, buf_size);
+
+ (cq->sq.next_to_use)++;
+ if (cq->sq.next_to_use == cq->sq.count)
+ cq->sq.next_to_use = 0;
+ wr32(hw, cq->sq.tail, cq->sq.next_to_use);
+
+ do {
+ if (ice_sq_done(hw, cq))
+ break;
+
+ mdelay(1);
+ total_delay++;
+ } while (total_delay < cq->sq_cmd_timeout);
+
+ /* if ready, copy the desc back to temp */
+ if (ice_sq_done(hw, cq)) {
+ memcpy(desc, desc_on_ring, sizeof(*desc));
+ if (buf) {
+ /* get returned length to copy */
+ u16 copy_size = le16_to_cpu(desc->datalen);
+
+ if (copy_size > buf_size) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "Return len %d > than buf len %d\n",
+ copy_size, buf_size);
+ status = ICE_ERR_AQ_ERROR;
+ } else {
+ memcpy(buf, dma_buf->va, copy_size);
+ }
+ }
+ retval = le16_to_cpu(desc->retval);
+ if (retval) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "Control Send Queue command completed with error 0x%x\n",
+ retval);
+
+ /* strip off FW internal code */
+ retval &= 0xff;
+ }
+ cmd_completed = true;
+ if (!status && retval != ICE_AQ_RC_OK)
+ status = ICE_ERR_AQ_ERROR;
+ cq->sq_last_status = (enum ice_aq_err)retval;
+ }
+
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "ATQ: desc and buffer writeback:\n");
+
+ ice_debug_cq(hw, ICE_DBG_AQ_CMD, (void *)desc, buf, buf_size);
+
+ /* save writeback AQ if requested */
+ if (details->wb_desc)
+ memcpy(details->wb_desc, desc_on_ring,
+ sizeof(*details->wb_desc));
+
+ /* update the error if time out occurred */
+ if (!cmd_completed) {
+ ice_debug(hw, ICE_DBG_AQ_MSG,
+ "Control Send Queue Writeback timeout.\n");
+ status = ICE_ERR_AQ_TIMEOUT;
+ }
+
+sq_send_command_error:
+ mutex_unlock(&cq->sq_lock);
+ return status;
+}
+
+/**
+ * ice_fill_dflt_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 ice_fill_dflt_direct_cmd_desc(struct ice_aq_desc *desc, u16 opcode)
+{
+ /* zero out the desc */
+ memset(desc, 0, sizeof(*desc));
+ desc->opcode = cpu_to_le16(opcode);
+ desc->flags = cpu_to_le16(ICE_AQ_FLAG_SI);
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_controlq.h b/drivers/net/ethernet/intel/ice/ice_controlq.h
new file mode 100644
index 000000000000..143578d02aec
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_controlq.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#ifndef _ICE_CONTROLQ_H_
+#define _ICE_CONTROLQ_H_
+
+#include "ice_adminq_cmd.h"
+
+#define ICE_CTL_Q_DESC(R, i) \
+ (&(((struct ice_aq_desc *)((R).desc_buf.va))[i]))
+
+#define ICE_CTL_Q_DESC_UNUSED(R) \
+ (u16)((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
+ (R)->next_to_clean - (R)->next_to_use - 1)
+
+/* Defines that help manage the driver vs FW API checks.
+ * Take a look at ice_aq_ver_check in ice_controlq.c for actual usage.
+ *
+ */
+#define EXP_FW_API_VER_BRANCH 0x00
+#define EXP_FW_API_VER_MAJOR 0x00
+#define EXP_FW_API_VER_MINOR 0x01
+
+/* Different control queue types: These are mainly for SW consumption. */
+enum ice_ctl_q {
+ ICE_CTL_Q_UNKNOWN = 0,
+ ICE_CTL_Q_ADMIN,
+};
+
+/* Control Queue default settings */
+#define ICE_CTL_Q_SQ_CMD_TIMEOUT 250 /* msecs */
+
+struct ice_ctl_q_ring {
+ void *dma_head; /* Virtual address to dma head */
+ struct ice_dma_mem desc_buf; /* descriptor ring memory */
+ void *cmd_buf; /* command buffer memory */
+
+ union {
+ struct ice_dma_mem *sq_bi;
+ struct ice_dma_mem *rq_bi;
+ } r;
+
+ u16 count; /* Number of descriptors */
+
+ /* used for interrupt processing */
+ u16 next_to_use;
+ u16 next_to_clean;
+
+ /* used for queue tracking */
+ u32 head;
+ u32 tail;
+ u32 len;
+ u32 bah;
+ u32 bal;
+ u32 len_mask;
+ u32 len_ena_mask;
+ u32 head_mask;
+};
+
+/* sq transaction details */
+struct ice_sq_cd {
+ struct ice_aq_desc *wb_desc;
+};
+
+#define ICE_CTL_Q_DETAILS(R, i) (&(((struct ice_sq_cd *)((R).cmd_buf))[i]))
+
+/* Control Queue information */
+struct ice_ctl_q_info {
+ enum ice_ctl_q qtype;
+ struct ice_ctl_q_ring rq; /* receive queue */
+ struct ice_ctl_q_ring sq; /* send queue */
+ u32 sq_cmd_timeout; /* send queue cmd write back timeout */
+ u16 num_rq_entries; /* receive queue depth */
+ u16 num_sq_entries; /* send queue depth */
+ u16 rq_buf_size; /* receive queue buffer size */
+ u16 sq_buf_size; /* send queue buffer size */
+ struct mutex sq_lock; /* Send queue lock */
+ struct mutex rq_lock; /* Receive queue lock */
+ enum ice_aq_err sq_last_status; /* last status on send queue */
+ enum ice_aq_err rq_last_status; /* last status on receive queue */
+};
+
+#endif /* _ICE_CONTROLQ_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_hw_autogen.h b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
new file mode 100644
index 000000000000..3d6bb273e4c8
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_hw_autogen.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+/* Machine-generated file */
+
+#ifndef _ICE_HW_AUTOGEN_H_
+#define _ICE_HW_AUTOGEN_H_
+
+#define PF_FW_ARQBAH 0x00080180
+#define PF_FW_ARQBAL 0x00080080
+#define PF_FW_ARQH 0x00080380
+#define PF_FW_ARQH_ARQH_S 0
+#define PF_FW_ARQH_ARQH_M ICE_M(0x3FF, PF_FW_ARQH_ARQH_S)
+#define PF_FW_ARQLEN 0x00080280
+#define PF_FW_ARQLEN_ARQLEN_S 0
+#define PF_FW_ARQLEN_ARQLEN_M ICE_M(0x3FF, PF_FW_ARQLEN_ARQLEN_S)
+#define PF_FW_ARQLEN_ARQENABLE_S 31
+#define PF_FW_ARQLEN_ARQENABLE_M BIT(PF_FW_ARQLEN_ARQENABLE_S)
+#define PF_FW_ARQT 0x00080480
+#define PF_FW_ATQBAH 0x00080100
+#define PF_FW_ATQBAL 0x00080000
+#define PF_FW_ATQH 0x00080300
+#define PF_FW_ATQH_ATQH_S 0
+#define PF_FW_ATQH_ATQH_M ICE_M(0x3FF, PF_FW_ATQH_ATQH_S)
+#define PF_FW_ATQLEN 0x00080200
+#define PF_FW_ATQLEN_ATQLEN_S 0
+#define PF_FW_ATQLEN_ATQLEN_M ICE_M(0x3FF, PF_FW_ATQLEN_ATQLEN_S)
+#define PF_FW_ATQLEN_ATQENABLE_S 31
+#define PF_FW_ATQLEN_ATQENABLE_M BIT(PF_FW_ATQLEN_ATQENABLE_S)
+#define PF_FW_ATQT 0x00080400
+
+#endif /* _ICE_HW_AUTOGEN_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 0631812aef2b..408ae90d6562 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -34,7 +34,11 @@ MODULE_VERSION(DRV_VERSION);
static int debug = -1;
module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "netif message level (0=none,...,0x7FFF=all)");
+#ifndef CONFIG_DYNAMIC_DEBUG
+MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)");
+#else
+MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)");
+#endif /* !CONFIG_DYNAMIC_DEBUG */
/**
* ice_probe - Device initialization routine
@@ -93,6 +97,11 @@ static int ice_probe(struct pci_dev *pdev,
hw->bus.func = PCI_FUNC(pdev->devfn);
pf->msg_enable = netif_msg_init(debug, ICE_DFLT_NETIF_M);
+#ifndef CONFIG_DYNAMIC_DEBUG
+ if (debug < -1)
+ hw->debug_mask = debug;
+#endif
+
return 0;
}
diff --git a/drivers/net/ethernet/intel/ice/ice_osdep.h b/drivers/net/ethernet/intel/ice/ice_osdep.h
new file mode 100644
index 000000000000..fc6576a3a9d1
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_osdep.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#ifndef _ICE_OSDEP_H_
+#define _ICE_OSDEP_H_
+
+#include <linux/types.h>
+#include <linux/io.h>
+#ifndef CONFIG_64BIT
+#include <linux/io-64-nonatomic-lo-hi.h>
+#endif
+
+#define wr32(a, reg, value) writel((value), ((a)->hw_addr + (reg)))
+#define rd32(a, reg) readl((a)->hw_addr + (reg))
+#define wr64(a, reg, value) writeq((value), ((a)->hw_addr + (reg)))
+#define rd64(a, reg) readq((a)->hw_addr + (reg))
+
+#define ICE_M(m, s) ((m) << (s))
+
+struct ice_dma_mem {
+ void *va;
+ dma_addr_t pa;
+ size_t size;
+};
+
+#define ice_hw_to_dev(ptr) \
+ (&(container_of((ptr), struct ice_pf, hw))->pdev->dev)
+
+#ifdef CONFIG_DYNAMIC_DEBUG
+#define ice_debug(hw, type, fmt, args...) \
+ dev_dbg(ice_hw_to_dev(hw), fmt, ##args)
+
+#define ice_debug_array(hw, type, rowsize, groupsize, buf, len) \
+ print_hex_dump_debug(KBUILD_MODNAME " ", \
+ DUMP_PREFIX_OFFSET, rowsize, \
+ groupsize, buf, len, false)
+#else
+#define ice_debug(hw, type, fmt, args...) \
+do { \
+ if ((type) & (hw)->debug_mask) \
+ dev_info(ice_hw_to_dev(hw), fmt, ##args); \
+} while (0)
+
+#ifdef DEBUG
+#define ice_debug_array(hw, type, rowsize, groupsize, buf, len) \
+do { \
+ if ((type) & (hw)->debug_mask) \
+ print_hex_dump_debug(KBUILD_MODNAME, \
+ DUMP_PREFIX_OFFSET, \
+ rowsize, groupsize, buf, \
+ len, false); \
+} while (0)
+#else
+#define ice_debug_array(hw, type, rowsize, groupsize, buf, len) \
+do { \
+ struct ice_hw *hw_l = hw; \
+ if ((type) & (hw_l)->debug_mask) { \
+ u16 len_l = len; \
+ u8 *buf_l = buf; \
+ int i; \
+ for (i = 0; i < (len_l - 16); i += 16) \
+ ice_debug(hw_l, type, "0x%04X %16ph\n",\
+ i, ((buf_l) + i)); \
+ if (i < len_l) \
+ ice_debug(hw_l, type, "0x%04X %*ph\n", \
+ i, ((len_l) - i), ((buf_l) + i));\
+ } \
+} while (0)
+#endif /* DEBUG */
+#endif /* CONFIG_DYNAMIC_DEBUG */
+
+#endif /* _ICE_OSDEP_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_status.h b/drivers/net/ethernet/intel/ice/ice_status.h
new file mode 100644
index 000000000000..940d6f57adcf
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_status.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Intel(R) Ethernet Connection E800 Series Linux Driver
+ * Copyright (c) 2018, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ */
+
+#ifndef _ICE_STATUS_H_
+#define _ICE_STATUS_H_
+
+/* Error Codes */
+enum ice_status {
+ ICE_ERR_PARAM = -1,
+ ICE_ERR_NOT_READY = -3,
+ ICE_ERR_INVAL_SIZE = -6,
+ ICE_ERR_FW_API_VER = -10,
+ ICE_ERR_NO_MEMORY = -11,
+ ICE_ERR_CFG = -12,
+ ICE_ERR_AQ_ERROR = -100,
+ ICE_ERR_AQ_TIMEOUT = -101,
+ ICE_ERR_AQ_FULL = -102,
+ ICE_ERR_AQ_EMPTY = -104,
+};
+
+#endif /* _ICE_STATUS_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index ad01e5f73d2c..cfa98e55a33a 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -18,6 +18,15 @@
#ifndef _ICE_TYPE_H_
#define _ICE_TYPE_H_
+#include "ice_status.h"
+#include "ice_hw_autogen.h"
+#include "ice_osdep.h"
+#include "ice_controlq.h"
+
+/* debug masks - set these bits in hw->debug_mask to control output */
+#define ICE_DBG_AQ_MSG BIT_ULL(24)
+#define ICE_DBG_AQ_CMD BIT_ULL(27)
+
/* Bus parameters */
struct ice_bus_info {
u16 device;
@@ -28,6 +37,7 @@ struct ice_bus_info {
struct ice_hw {
u8 __iomem *hw_addr;
void *back;
+ u64 debug_mask; /* bitmap for debug mask */
/* pci info */
u16 device_id;
@@ -37,6 +47,18 @@ struct ice_hw {
u8 revision_id;
struct ice_bus_info bus;
+ /* Control Queue info */
+ struct ice_ctl_q_info adminq;
+
+ u8 api_branch; /* API branch version */
+ u8 api_maj_ver; /* API major version */
+ u8 api_min_ver; /* API minor version */
+ u8 api_patch; /* API patch version */
+ u8 fw_branch; /* firmware branch version */
+ u8 fw_maj_ver; /* firmware major version */
+ u8 fw_min_ver; /* firmware minor version */
+ u8 fw_patch; /* firmware patch version */
+ u32 fw_build; /* firmware build number */
};
#endif /* _ICE_TYPE_H_ */
--
2.14.3
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