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-rw-r--r--drivers/net/wireless/iwmc3200wifi/hal.c470
1 files changed, 0 insertions, 470 deletions
diff --git a/drivers/net/wireless/iwmc3200wifi/hal.c b/drivers/net/wireless/iwmc3200wifi/hal.c
deleted file mode 100644
index 1cabcb39643f..000000000000
--- a/drivers/net/wireless/iwmc3200wifi/hal.c
+++ /dev/null
@@ -1,470 +0,0 @@
-/*
- * Intel Wireless Multicomm 3200 WiFi driver
- *
- * Copyright (C) 2009 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:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * 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.
- * * Neither the name of 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.
- *
- *
- * Intel Corporation <ilw@linux.intel.com>
- * Samuel Ortiz <samuel.ortiz@intel.com>
- * Zhu Yi <yi.zhu@intel.com>
- *
- */
-
-/*
- * Hardware Abstraction Layer for iwm.
- *
- * This file mostly defines an abstraction API for
- * sending various commands to the target.
- *
- * We have 2 types of commands: wifi and non-wifi ones.
- *
- * - wifi commands:
- * They are used for sending LMAC and UMAC commands,
- * and thus are the most commonly used ones.
- * There are 2 different wifi command types, the regular
- * one and the LMAC one. The former is used to send
- * UMAC commands (see UMAC_CMD_OPCODE_* from umac.h)
- * while the latter is used for sending commands to the
- * LMAC. If you look at LMAC commands you'll se that they
- * are actually regular iwlwifi target commands encapsulated
- * into a special UMAC command called UMAC passthrough.
- * This is due to the fact the host talks exclusively
- * to the UMAC and so there needs to be a special UMAC
- * command for talking to the LMAC.
- * This is how a wifi command is laid out:
- * ------------------------
- * | iwm_udma_out_wifi_hdr |
- * ------------------------
- * | SW meta_data (32 bits) |
- * ------------------------
- * | iwm_dev_cmd_hdr |
- * ------------------------
- * | payload |
- * | .... |
- *
- * - non-wifi, or general commands:
- * Those commands are handled by the device's bootrom,
- * and are typically sent when the UMAC and the LMAC
- * are not yet available.
- * * This is how a non-wifi command is laid out:
- * ---------------------------
- * | iwm_udma_out_nonwifi_hdr |
- * ---------------------------
- * | payload |
- * | .... |
-
- *
- * All the commands start with a UDMA header, which is
- * basically a 32 bits field. The 4 LSB there define
- * an opcode that allows the target to differentiate
- * between wifi (opcode is 0xf) and non-wifi commands
- * (opcode is [0..0xe]).
- *
- * When a command (wifi or non-wifi) is supposed to receive
- * an answer, we queue the command buffer. When we do receive
- * a command response from the UMAC, we go through the list
- * of pending command, and pass both the command and the answer
- * to the rx handler. Each command is sent with a unique
- * sequence id, and the answer is sent with the same one. This
- * is how we're supposed to match an answer with its command.
- * See rx.c:iwm_rx_handle_[non]wifi() and iwm_get_pending_[non]wifi()
- * for the implementation details.
- */
-#include <linux/kernel.h>
-#include <linux/netdevice.h>
-#include <linux/slab.h>
-
-#include "iwm.h"
-#include "bus.h"
-#include "hal.h"
-#include "umac.h"
-#include "debug.h"
-#include "trace.h"
-
-static int iwm_nonwifi_cmd_init(struct iwm_priv *iwm,
- struct iwm_nonwifi_cmd *cmd,
- struct iwm_udma_nonwifi_cmd *udma_cmd)
-{
- INIT_LIST_HEAD(&cmd->pending);
-
- spin_lock(&iwm->cmd_lock);
-
- cmd->resp_received = 0;
-
- cmd->seq_num = iwm->nonwifi_seq_num;
- udma_cmd->seq_num = cpu_to_le16(cmd->seq_num);
-
- iwm->nonwifi_seq_num++;
- iwm->nonwifi_seq_num %= UMAC_NONWIFI_SEQ_NUM_MAX;
-
- if (udma_cmd->resp)
- list_add_tail(&cmd->pending, &iwm->nonwifi_pending_cmd);
-
- spin_unlock(&iwm->cmd_lock);
-
- cmd->buf.start = cmd->buf.payload;
- cmd->buf.len = 0;
-
- memcpy(&cmd->udma_cmd, udma_cmd, sizeof(*udma_cmd));
-
- return cmd->seq_num;
-}
-
-u16 iwm_alloc_wifi_cmd_seq(struct iwm_priv *iwm)
-{
- u16 seq_num = iwm->wifi_seq_num;
-
- iwm->wifi_seq_num++;
- iwm->wifi_seq_num %= UMAC_WIFI_SEQ_NUM_MAX;
-
- return seq_num;
-}
-
-static void iwm_wifi_cmd_init(struct iwm_priv *iwm,
- struct iwm_wifi_cmd *cmd,
- struct iwm_udma_wifi_cmd *udma_cmd,
- struct iwm_umac_cmd *umac_cmd,
- struct iwm_lmac_cmd *lmac_cmd,
- u16 payload_size)
-{
- INIT_LIST_HEAD(&cmd->pending);
-
- spin_lock(&iwm->cmd_lock);
-
- cmd->seq_num = iwm_alloc_wifi_cmd_seq(iwm);
- umac_cmd->seq_num = cpu_to_le16(cmd->seq_num);
-
- if (umac_cmd->resp)
- list_add_tail(&cmd->pending, &iwm->wifi_pending_cmd);
-
- spin_unlock(&iwm->cmd_lock);
-
- cmd->buf.start = cmd->buf.payload;
- cmd->buf.len = 0;
-
- if (lmac_cmd) {
- cmd->buf.start -= sizeof(struct iwm_lmac_hdr);
-
- lmac_cmd->seq_num = cpu_to_le16(cmd->seq_num);
- lmac_cmd->count = cpu_to_le16(payload_size);
-
- memcpy(&cmd->lmac_cmd, lmac_cmd, sizeof(*lmac_cmd));
-
- umac_cmd->count = cpu_to_le16(sizeof(struct iwm_lmac_hdr));
- } else
- umac_cmd->count = 0;
-
- umac_cmd->count = cpu_to_le16(payload_size +
- le16_to_cpu(umac_cmd->count));
- udma_cmd->count = cpu_to_le16(sizeof(struct iwm_umac_fw_cmd_hdr) +
- le16_to_cpu(umac_cmd->count));
-
- memcpy(&cmd->udma_cmd, udma_cmd, sizeof(*udma_cmd));
- memcpy(&cmd->umac_cmd, umac_cmd, sizeof(*umac_cmd));
-}
-
-void iwm_cmd_flush(struct iwm_priv *iwm)
-{
- struct iwm_wifi_cmd *wcmd, *wnext;
- struct iwm_nonwifi_cmd *nwcmd, *nwnext;
-
- list_for_each_entry_safe(wcmd, wnext, &iwm->wifi_pending_cmd, pending) {
- list_del(&wcmd->pending);
- kfree(wcmd);
- }
-
- list_for_each_entry_safe(nwcmd, nwnext, &iwm->nonwifi_pending_cmd,
- pending) {
- list_del(&nwcmd->pending);
- kfree(nwcmd);
- }
-}
-
-struct iwm_wifi_cmd *iwm_get_pending_wifi_cmd(struct iwm_priv *iwm, u16 seq_num)
-{
- struct iwm_wifi_cmd *cmd;
-
- list_for_each_entry(cmd, &iwm->wifi_pending_cmd, pending)
- if (cmd->seq_num == seq_num) {
- list_del(&cmd->pending);
- return cmd;
- }
-
- return NULL;
-}
-
-struct iwm_nonwifi_cmd *iwm_get_pending_nonwifi_cmd(struct iwm_priv *iwm,
- u8 seq_num, u8 cmd_opcode)
-{
- struct iwm_nonwifi_cmd *cmd;
-
- list_for_each_entry(cmd, &iwm->nonwifi_pending_cmd, pending)
- if ((cmd->seq_num == seq_num) &&
- (cmd->udma_cmd.opcode == cmd_opcode) &&
- (cmd->resp_received)) {
- list_del(&cmd->pending);
- return cmd;
- }
-
- return NULL;
-}
-
-static void iwm_build_udma_nonwifi_hdr(struct iwm_priv *iwm,
- struct iwm_udma_out_nonwifi_hdr *hdr,
- struct iwm_udma_nonwifi_cmd *cmd)
-{
- memset(hdr, 0, sizeof(*hdr));
-
- SET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_OPCODE, cmd->opcode);
- SET_VAL32(hdr->cmd, UDMA_HDI_OUT_NW_CMD_RESP, cmd->resp);
- SET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_EOT, 1);
- SET_VAL32(hdr->cmd, UDMA_HDI_OUT_NW_CMD_HANDLE_BY_HW,
- cmd->handle_by_hw);
- SET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_SIGNATURE, UMAC_HDI_OUT_SIGNATURE);
- SET_VAL32(hdr->cmd, UDMA_HDI_OUT_CMD_NON_WIFI_HW_SEQ_NUM,
- le16_to_cpu(cmd->seq_num));
-
- hdr->addr = cmd->addr;
- hdr->op1_sz = cmd->op1_sz;
- hdr->op2 = cmd->op2;
-}
-
-static int iwm_send_udma_nonwifi_cmd(struct iwm_priv *iwm,
- struct iwm_nonwifi_cmd *cmd)
-{
- struct iwm_udma_out_nonwifi_hdr *udma_hdr;
- struct iwm_nonwifi_cmd_buff *buf;
- struct iwm_udma_nonwifi_cmd *udma_cmd = &cmd->udma_cmd;
-
- buf = &cmd->buf;
-
- buf->start -= sizeof(struct iwm_umac_nonwifi_out_hdr);
- buf->len += sizeof(struct iwm_umac_nonwifi_out_hdr);
-
- udma_hdr = (struct iwm_udma_out_nonwifi_hdr *)(buf->start);
-
- iwm_build_udma_nonwifi_hdr(iwm, udma_hdr, udma_cmd);
-
- IWM_DBG_CMD(iwm, DBG,
- "Send UDMA nonwifi cmd: opcode = 0x%x, resp = 0x%x, "
- "hw = 0x%x, seqnum = %d, addr = 0x%x, op1_sz = 0x%x, "
- "op2 = 0x%x\n", udma_cmd->opcode, udma_cmd->resp,
- udma_cmd->handle_by_hw, cmd->seq_num, udma_cmd->addr,
- udma_cmd->op1_sz, udma_cmd->op2);
-
- trace_iwm_tx_nonwifi_cmd(iwm, udma_hdr);
- return iwm_bus_send_chunk(iwm, buf->start, buf->len);
-}
-
-void iwm_udma_wifi_hdr_set_eop(struct iwm_priv *iwm, u8 *buf, u8 eop)
-{
- struct iwm_udma_out_wifi_hdr *hdr = (struct iwm_udma_out_wifi_hdr *)buf;
-
- SET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_EOT, eop);
-}
-
-void iwm_build_udma_wifi_hdr(struct iwm_priv *iwm,
- struct iwm_udma_out_wifi_hdr *hdr,
- struct iwm_udma_wifi_cmd *cmd)
-{
- memset(hdr, 0, sizeof(*hdr));
-
- SET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_OPCODE, UMAC_HDI_OUT_OPCODE_WIFI);
- SET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_EOT, cmd->eop);
- SET_VAL32(hdr->cmd, UMAC_HDI_OUT_CMD_SIGNATURE, UMAC_HDI_OUT_SIGNATURE);
-
- SET_VAL32(hdr->meta_data, UMAC_HDI_OUT_BYTE_COUNT,
- le16_to_cpu(cmd->count));
- SET_VAL32(hdr->meta_data, UMAC_HDI_OUT_CREDIT_GRP, cmd->credit_group);
- SET_VAL32(hdr->meta_data, UMAC_HDI_OUT_RATID, cmd->ra_tid);
- SET_VAL32(hdr->meta_data, UMAC_HDI_OUT_LMAC_OFFSET, cmd->lmac_offset);
-}
-
-void iwm_build_umac_hdr(struct iwm_priv *iwm,
- struct iwm_umac_fw_cmd_hdr *hdr,
- struct iwm_umac_cmd *cmd)
-{
- memset(hdr, 0, sizeof(*hdr));
-
- SET_VAL32(hdr->meta_data, UMAC_FW_CMD_BYTE_COUNT,
- le16_to_cpu(cmd->count));
- SET_VAL32(hdr->meta_data, UMAC_FW_CMD_TX_STA_COLOR, cmd->color);
- SET_VAL8(hdr->cmd.flags, UMAC_DEV_CMD_FLAGS_RESP_REQ, cmd->resp);
-
- hdr->cmd.cmd = cmd->id;
- hdr->cmd.seq_num = cmd->seq_num;
-}
-
-static int iwm_send_udma_wifi_cmd(struct iwm_priv *iwm,
- struct iwm_wifi_cmd *cmd)
-{
- struct iwm_umac_wifi_out_hdr *umac_hdr;
- struct iwm_wifi_cmd_buff *buf;
- struct iwm_udma_wifi_cmd *udma_cmd = &cmd->udma_cmd;
- struct iwm_umac_cmd *umac_cmd = &cmd->umac_cmd;
- int ret;
-
- buf = &cmd->buf;
-
- buf->start -= sizeof(struct iwm_umac_wifi_out_hdr);
- buf->len += sizeof(struct iwm_umac_wifi_out_hdr);
-
- umac_hdr = (struct iwm_umac_wifi_out_hdr *)(buf->start);
-
- iwm_build_udma_wifi_hdr(iwm, &umac_hdr->hw_hdr, udma_cmd);
- iwm_build_umac_hdr(iwm, &umac_hdr->sw_hdr, umac_cmd);
-
- IWM_DBG_CMD(iwm, DBG,
- "Send UDMA wifi cmd: opcode = 0x%x, UMAC opcode = 0x%x, "
- "eop = 0x%x, count = 0x%x, credit_group = 0x%x, "
- "ra_tid = 0x%x, lmac_offset = 0x%x, seqnum = %d\n",
- UMAC_HDI_OUT_OPCODE_WIFI, umac_cmd->id,
- udma_cmd->eop, udma_cmd->count, udma_cmd->credit_group,
- udma_cmd->ra_tid, udma_cmd->lmac_offset, cmd->seq_num);
-
- if (umac_cmd->id == UMAC_CMD_OPCODE_WIFI_PASS_THROUGH)
- IWM_DBG_CMD(iwm, DBG, "\tLMAC opcode: 0x%x\n",
- cmd->lmac_cmd.id);
-
- ret = iwm_tx_credit_alloc(iwm, udma_cmd->credit_group, buf->len);
-
- /* We keep sending UMAC reset regardless of the command credits.
- * The UMAC is supposed to be reset anyway and the Tx credits are
- * reinitialized afterwards. If we are lucky, the reset could
- * still be done even though we have run out of credits for the
- * command pool at this moment.*/
- if (ret && (umac_cmd->id != UMAC_CMD_OPCODE_RESET)) {
- IWM_DBG_TX(iwm, DBG, "Failed to alloc tx credit for cmd %d\n",
- umac_cmd->id);
- return ret;
- }
-
- trace_iwm_tx_wifi_cmd(iwm, umac_hdr);
- return iwm_bus_send_chunk(iwm, buf->start, buf->len);
-}
-
-/* target_cmd a.k.a udma_nonwifi_cmd can be sent when UMAC is not available */
-int iwm_hal_send_target_cmd(struct iwm_priv *iwm,
- struct iwm_udma_nonwifi_cmd *udma_cmd,
- const void *payload)
-{
- struct iwm_nonwifi_cmd *cmd;
- int ret, seq_num;
-
- cmd = kzalloc(sizeof(struct iwm_nonwifi_cmd), GFP_KERNEL);
- if (!cmd) {
- IWM_ERR(iwm, "Couldn't alloc memory for hal cmd\n");
- return -ENOMEM;
- }
-
- seq_num = iwm_nonwifi_cmd_init(iwm, cmd, udma_cmd);
-
- if (cmd->udma_cmd.opcode == UMAC_HDI_OUT_OPCODE_WRITE ||
- cmd->udma_cmd.opcode == UMAC_HDI_OUT_OPCODE_WRITE_PERSISTENT) {
- cmd->buf.len = le32_to_cpu(cmd->udma_cmd.op1_sz);
- memcpy(&cmd->buf.payload, payload, cmd->buf.len);
- }
-
- ret = iwm_send_udma_nonwifi_cmd(iwm, cmd);
-
- if (!udma_cmd->resp)
- kfree(cmd);
-
- if (ret < 0)
- return ret;
-
- return seq_num;
-}
-
-static void iwm_build_lmac_hdr(struct iwm_priv *iwm, struct iwm_lmac_hdr *hdr,
- struct iwm_lmac_cmd *cmd)
-{
- memset(hdr, 0, sizeof(*hdr));
-
- hdr->id = cmd->id;
- hdr->flags = 0; /* Is this ever used? */
- hdr->seq_num = cmd->seq_num;
-}
-
-/*
- * iwm_hal_send_host_cmd(): sends commands to the UMAC or the LMAC.
- * Sending command to the LMAC is equivalent to sending a
- * regular UMAC command with the LMAC passthrough or the LMAC
- * wrapper UMAC command IDs.
- */
-int iwm_hal_send_host_cmd(struct iwm_priv *iwm,
- struct iwm_udma_wifi_cmd *udma_cmd,
- struct iwm_umac_cmd *umac_cmd,
- struct iwm_lmac_cmd *lmac_cmd,
- const void *payload, u16 payload_size)
-{
- struct iwm_wifi_cmd *cmd;
- struct iwm_lmac_hdr *hdr;
- int lmac_hdr_len = 0;
- int ret;
-
- cmd = kzalloc(sizeof(struct iwm_wifi_cmd), GFP_KERNEL);
- if (!cmd) {
- IWM_ERR(iwm, "Couldn't alloc memory for wifi hal cmd\n");
- return -ENOMEM;
- }
-
- iwm_wifi_cmd_init(iwm, cmd, udma_cmd, umac_cmd, lmac_cmd, payload_size);
-
- if (lmac_cmd) {
- hdr = (struct iwm_lmac_hdr *)(cmd->buf.start);
-
- iwm_build_lmac_hdr(iwm, hdr, &cmd->lmac_cmd);
- lmac_hdr_len = sizeof(struct iwm_lmac_hdr);
- }
-
- memcpy(cmd->buf.payload, payload, payload_size);
- cmd->buf.len = le16_to_cpu(umac_cmd->count);
-
- ret = iwm_send_udma_wifi_cmd(iwm, cmd);
-
- /* We free the cmd if we're not expecting any response */
- if (!umac_cmd->resp)
- kfree(cmd);
- return ret;
-}
-
-/*
- * iwm_hal_send_umac_cmd(): This is a special case for
- * iwm_hal_send_host_cmd() to send direct UMAC cmd (without
- * LMAC involved).
- */
-int iwm_hal_send_umac_cmd(struct iwm_priv *iwm,
- struct iwm_udma_wifi_cmd *udma_cmd,
- struct iwm_umac_cmd *umac_cmd,
- const void *payload, u16 payload_size)
-{
- return iwm_hal_send_host_cmd(iwm, udma_cmd, umac_cmd, NULL,
- payload, payload_size);
-}