comment "Enable USB support to see WiMAX USB drivers"
depends on USB = n
-comment "Enable MMC support to see WiMAX SDIO drivers"
- depends on MMC = n
-
config WIMAX_I2400M_USB
tristate "Intel Wireless WiMAX Connection 2400 over USB (including 5x50)"
depends on WIMAX && USB
If unsure, it is safe to select M (module).
-config WIMAX_I2400M_SDIO
- tristate "Intel Wireless WiMAX Connection 2400 over SDIO"
- depends on WIMAX && MMC
- select WIMAX_I2400M
- help
- Select if you have a device based on the Intel WiMAX
- Connection 2400 over SDIO.
-
- If unsure, it is safe to select M (module).
-
-config WIMAX_IWMC3200_SDIO
- bool "Intel Wireless Multicom WiMAX Connection 3200 over SDIO (EXPERIMENTAL)"
- depends on WIMAX_I2400M_SDIO
- depends on EXPERIMENTAL
- select IWMC3200TOP
- help
- Select if you have a device based on the Intel Multicom WiMAX
- Connection 3200 over SDIO.
-
config WIMAX_I2400M_DEBUG_LEVEL
int "WiMAX i2400m debug level"
depends on WIMAX_I2400M
obj-$(CONFIG_WIMAX_I2400M) += i2400m.o
obj-$(CONFIG_WIMAX_I2400M_USB) += i2400m-usb.o
-obj-$(CONFIG_WIMAX_I2400M_SDIO) += i2400m-sdio.o
i2400m-y := \
control.o \
usb-tx.o \
usb-rx.o \
usb.o
-
-
-i2400m-sdio-y := \
- sdio.o \
- sdio-tx.o \
- sdio-fw.o \
- sdio-rx.o
/*
* Alloc the command and ack buffers for boot mode
*
- * Get the buffers needed to deal with boot mode messages. These
- * buffers need to be allocated before the sdio receive irq is setup.
+ * Get the buffers needed to deal with boot mode messages.
*/
static
int i2400m_bm_buf_alloc(struct i2400m *i2400m)
* firmware. Normal hardware takes only signed firmware.
*
* On boot mode, in USB, we write to the device using the bulk out
- * endpoint and read from it in the notification endpoint. In SDIO we
- * talk to it via the write address and read from the read address.
+ * endpoint and read from it in the notification endpoint.
*
* Upon entrance to boot mode, the device sends (preceded with a few
* zero length packets (ZLPs) on the notification endpoint in USB) a
+++ /dev/null
-/*
- * Intel Wireless WiMAX Connection 2400m
- * SDIO-specific i2400m driver definitions
- *
- *
- * Copyright (C) 2007-2008 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 <linux-wimax@intel.com>
- * Brian Bian <brian.bian@intel.com>
- * Dirk Brandewie <dirk.j.brandewie@intel.com>
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- * Yanir Lubetkin <yanirx.lubetkin@intel.com>
- * - Initial implementation
- *
- *
- * This driver implements the bus-specific part of the i2400m for
- * SDIO. Check i2400m.h for a generic driver description.
- *
- * ARCHITECTURE
- *
- * This driver sits under the bus-generic i2400m driver, providing the
- * connection to the device.
- *
- * When probed, all the function pointers are setup and then the
- * bus-generic code called. The generic driver will then use the
- * provided pointers for uploading firmware (i2400ms_bus_bm*() in
- * sdio-fw.c) and then setting up the device (i2400ms_dev_*() in
- * sdio.c).
- *
- * Once firmware is uploaded, TX functions (sdio-tx.c) are called when
- * data is ready for transmission in the TX fifo; then the SDIO IRQ is
- * fired and data is available (sdio-rx.c), it is sent to the generic
- * driver for processing with i2400m_rx.
- */
-
-#ifndef __I2400M_SDIO_H__
-#define __I2400M_SDIO_H__
-
-#include "i2400m.h"
-
-/* Host-Device interface for SDIO */
-enum {
- I2400M_SDIO_BOOT_RETRIES = 3,
- I2400MS_BLK_SIZE = 256,
- I2400MS_PL_SIZE_MAX = 0x3E00,
-
- I2400MS_DATA_ADDR = 0x0,
- I2400MS_INTR_STATUS_ADDR = 0x13,
- I2400MS_INTR_CLEAR_ADDR = 0x13,
- I2400MS_INTR_ENABLE_ADDR = 0x14,
- I2400MS_INTR_GET_SIZE_ADDR = 0x2C,
- /* The number of ticks to wait for the device to signal that
- * it is ready */
- I2400MS_INIT_SLEEP_INTERVAL = 100,
- /* How long to wait for the device to settle after reset */
- I2400MS_SETTLE_TIME = 40,
- /* The number of msec to wait for IOR after sending IOE */
- IWMC3200_IOR_TIMEOUT = 10,
-};
-
-
-/**
- * struct i2400ms - descriptor for a SDIO connected i2400m
- *
- * @i2400m: bus-generic i2400m implementation; has to be first (see
- * it's documentation in i2400m.h).
- *
- * @func: pointer to our SDIO function
- *
- * @tx_worker: workqueue struct used to TX data when the bus-generic
- * code signals packets are pending for transmission to the device.
- *
- * @tx_workqueue: workqeueue used for data TX; we don't use the
- * system's workqueue as that might cause deadlocks with code in
- * the bus-generic driver. The read/write operation to the queue
- * is protected with spinlock (tx_lock in struct i2400m) to avoid
- * the queue being destroyed in the middle of a the queue read/write
- * operation.
- *
- * @debugfs_dentry: dentry for the SDIO specific debugfs files
- *
- * Note this value is set to NULL upon destruction; this is
- * because some routinges use it to determine if we are inside the
- * probe() path or some other path. When debugfs is disabled,
- * creation sets the dentry to '(void*) -ENODEV', which is valid
- * for the test.
- */
-struct i2400ms {
- struct i2400m i2400m; /* FIRST! See doc */
- struct sdio_func *func;
-
- struct work_struct tx_worker;
- struct workqueue_struct *tx_workqueue;
- char tx_wq_name[32];
-
- struct dentry *debugfs_dentry;
-
- wait_queue_head_t bm_wfa_wq;
- int bm_wait_result;
- size_t bm_ack_size;
-
- /* Device is any of the iwmc3200 SKUs */
- unsigned iwmc3200:1;
-};
-
-
-static inline
-void i2400ms_init(struct i2400ms *i2400ms)
-{
- i2400m_init(&i2400ms->i2400m);
-}
-
-
-extern int i2400ms_rx_setup(struct i2400ms *);
-extern void i2400ms_rx_release(struct i2400ms *);
-
-extern int i2400ms_tx_setup(struct i2400ms *);
-extern void i2400ms_tx_release(struct i2400ms *);
-extern void i2400ms_bus_tx_kick(struct i2400m *);
-
-extern ssize_t i2400ms_bus_bm_cmd_send(struct i2400m *,
- const struct i2400m_bootrom_header *,
- size_t, int);
-extern ssize_t i2400ms_bus_bm_wait_for_ack(struct i2400m *,
- struct i2400m_bootrom_header *,
- size_t);
-extern void i2400ms_bus_bm_release(struct i2400m *);
-extern int i2400ms_bus_bm_setup(struct i2400m *);
-
-#endif /* #ifndef __I2400M_SDIO_H__ */
* - bus generic driver (this part)
*
* The bus specific driver sets up stuff specific to the bus the
- * device is connected to (USB, SDIO, PCI, tam-tam...non-authoritative
+ * device is connected to (USB, PCI, tam-tam...non-authoritative
* nor binding list) which is basically the device-model management
* (probe/disconnect, etc), moving data from device to kernel and
* back, doing the power saving details and reseting the device.
* amount needed for loading firmware, where us dev_start/stop setup
* the rest needed to do full data/control traffic.
*
- * @bus_tx_block_size: [fill] SDIO imposes a 256 block size, USB 16,
- * so we have a tx_blk_size variable that the bus layer sets to
- * tell the engine how much of that we need.
+ * @bus_tx_block_size: [fill] USB imposes a 16 block size, but other
+ * busses will differ. So we have a tx_blk_size variable that the
+ * bus layer sets to tell the engine how much of that we need.
*
* @bus_tx_room_min: [fill] Minimum room required while allocating
- * TX queue's buffer space for message header. SDIO requires
- * 224 bytes and USB 16 bytes. Refer bus specific driver code
- * for details.
+ * TX queue's buffer space for message header. USB requires
+ * 16 bytes. Refer to bus specific driver code for details.
*
* @bus_pl_size_max: [fill] Maximum payload size.
*
+++ /dev/null
-/*
- * debug levels control file for the i2400m module's
- */
-#ifndef __debug_levels__h__
-#define __debug_levels__h__
-
-/* Maximum compile and run time debug level for all submodules */
-#define D_MODULENAME i2400m_sdio
-#define D_MASTER CONFIG_WIMAX_I2400M_DEBUG_LEVEL
-
-#include <linux/wimax/debug.h>
-
-/* List of all the enabled modules */
-enum d_module {
- D_SUBMODULE_DECLARE(main),
- D_SUBMODULE_DECLARE(tx),
- D_SUBMODULE_DECLARE(rx),
- D_SUBMODULE_DECLARE(fw)
-};
-
-
-#endif /* #ifndef __debug_levels__h__ */
+++ /dev/null
-/*
- * Intel Wireless WiMAX Connection 2400m
- * Firmware uploader's SDIO specifics
- *
- *
- * Copyright (C) 2007-2008 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 <linux-wimax@intel.com>
- * Yanir Lubetkin <yanirx.lubetkin@intel.com>
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- * - Initial implementation
- *
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- * - Bus generic/specific split for USB
- *
- * Dirk Brandewie <dirk.j.brandewie@intel.com>
- * - Initial implementation for SDIO
- *
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- * - SDIO rehash for changes in the bus-driver model
- *
- * Dirk Brandewie <dirk.j.brandewie@intel.com>
- * - Make it IRQ based, not polling
- *
- * THE PROCEDURE
- *
- * See fw.c for the generic description of this procedure.
- *
- * This file implements only the SDIO specifics. It boils down to how
- * to send a command and waiting for an acknowledgement from the
- * device.
- *
- * All this code is sequential -- all i2400ms_bus_bm_*() functions are
- * executed in the same thread, except i2400ms_bm_irq() [on its own by
- * the SDIO driver]. This makes it possible to avoid locking.
- *
- * COMMAND EXECUTION
- *
- * The generic firmware upload code will call i2400m_bus_bm_cmd_send()
- * to send commands.
- *
- * The SDIO devices expects things in 256 byte blocks, so it will pad
- * it, compute the checksum (if needed) and pass it to SDIO.
- *
- * ACK RECEPTION
- *
- * This works in IRQ mode -- the fw loader says when to wait for data
- * and for that it calls i2400ms_bus_bm_wait_for_ack().
- *
- * This checks if there is any data available (RX size > 0); if not,
- * waits for the IRQ handler to notify about it. Once there is data,
- * it is read and passed to the caller. Doing it this way we don't
- * need much coordination/locking, and it makes it much more difficult
- * for an interrupt to be lost and the wait_for_ack() function getting
- * stuck even when data is pending.
- */
-#include <linux/mmc/sdio_func.h>
-#include "i2400m-sdio.h"
-
-
-#define D_SUBMODULE fw
-#include "sdio-debug-levels.h"
-
-
-/*
- * Send a boot-mode command to the SDIO function
- *
- * We use a bounce buffer (i2400m->bm_cmd_buf) because we need to
- * touch the header if the RAW flag is not set.
- *
- * @flags: pass thru from i2400m_bm_cmd()
- * @return: cmd_size if ok, < 0 errno code on error.
- *
- * Note the command is padded to the SDIO block size for the device.
- */
-ssize_t i2400ms_bus_bm_cmd_send(struct i2400m *i2400m,
- const struct i2400m_bootrom_header *_cmd,
- size_t cmd_size, int flags)
-{
- ssize_t result;
- struct device *dev = i2400m_dev(i2400m);
- struct i2400ms *i2400ms = container_of(i2400m, struct i2400ms, i2400m);
- int opcode = _cmd == NULL ? -1 : i2400m_brh_get_opcode(_cmd);
- struct i2400m_bootrom_header *cmd;
- /* SDIO restriction */
- size_t cmd_size_a = ALIGN(cmd_size, I2400MS_BLK_SIZE);
-
- d_fnstart(5, dev, "(i2400m %p cmd %p size %zu)\n",
- i2400m, _cmd, cmd_size);
- result = -E2BIG;
- if (cmd_size > I2400M_BM_CMD_BUF_SIZE)
- goto error_too_big;
-
- if (_cmd != i2400m->bm_cmd_buf)
- memmove(i2400m->bm_cmd_buf, _cmd, cmd_size);
- cmd = i2400m->bm_cmd_buf;
- if (cmd_size_a > cmd_size) /* Zero pad space */
- memset(i2400m->bm_cmd_buf + cmd_size, 0, cmd_size_a - cmd_size);
- if ((flags & I2400M_BM_CMD_RAW) == 0) {
- if (WARN_ON(i2400m_brh_get_response_required(cmd) == 0))
- dev_warn(dev, "SW BUG: response_required == 0\n");
- i2400m_bm_cmd_prepare(cmd);
- }
- d_printf(4, dev, "BM cmd %d: %zu bytes (%zu padded)\n",
- opcode, cmd_size, cmd_size_a);
- d_dump(5, dev, cmd, cmd_size);
-
- sdio_claim_host(i2400ms->func); /* Send & check */
- result = sdio_memcpy_toio(i2400ms->func, I2400MS_DATA_ADDR,
- i2400m->bm_cmd_buf, cmd_size_a);
- sdio_release_host(i2400ms->func);
- if (result < 0) {
- dev_err(dev, "BM cmd %d: cannot send: %ld\n",
- opcode, (long) result);
- goto error_cmd_send;
- }
- result = cmd_size;
-error_cmd_send:
-error_too_big:
- d_fnend(5, dev, "(i2400m %p cmd %p size %zu) = %d\n",
- i2400m, _cmd, cmd_size, (int) result);
- return result;
-}
-
-
-/*
- * Read an ack from the device's boot-mode
- *
- * @i2400m:
- * @_ack: pointer to where to store the read data
- * @ack_size: how many bytes we should read
- *
- * Returns: < 0 errno code on error; otherwise, amount of received bytes.
- *
- * The ACK for a BM command is always at least sizeof(*ack) bytes, so
- * check for that. We don't need to check for device reboots
- *
- */
-ssize_t i2400ms_bus_bm_wait_for_ack(struct i2400m *i2400m,
- struct i2400m_bootrom_header *ack,
- size_t ack_size)
-{
- ssize_t result;
- struct i2400ms *i2400ms = container_of(i2400m, struct i2400ms, i2400m);
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &func->dev;
- int size;
-
- BUG_ON(sizeof(*ack) > ack_size);
-
- d_fnstart(5, dev, "(i2400m %p ack %p size %zu)\n",
- i2400m, ack, ack_size);
-
- result = wait_event_timeout(i2400ms->bm_wfa_wq,
- i2400ms->bm_ack_size != -EINPROGRESS,
- 2 * HZ);
- if (result == 0) {
- result = -ETIMEDOUT;
- dev_err(dev, "BM: error waiting for an ack\n");
- goto error_timeout;
- }
-
- spin_lock(&i2400m->rx_lock);
- result = i2400ms->bm_ack_size;
- BUG_ON(result == -EINPROGRESS);
- if (result < 0) /* so we exit when rx_release() is called */
- dev_err(dev, "BM: %s failed: %zd\n", __func__, result);
- else {
- size = min(ack_size, i2400ms->bm_ack_size);
- memcpy(ack, i2400m->bm_ack_buf, size);
- }
- /*
- * Remember always to clear the bm_ack_size to -EINPROGRESS
- * after the RX data is processed
- */
- i2400ms->bm_ack_size = -EINPROGRESS;
- spin_unlock(&i2400m->rx_lock);
-
-error_timeout:
- d_fnend(5, dev, "(i2400m %p ack %p size %zu) = %zd\n",
- i2400m, ack, ack_size, result);
- return result;
-}
+++ /dev/null
-/*
- * Intel Wireless WiMAX Connection 2400m
- * SDIO RX handling
- *
- *
- * Copyright (C) 2007-2008 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 <linux-wimax@intel.com>
- * Dirk Brandewie <dirk.j.brandewie@intel.com>
- * - Initial implementation
- *
- *
- * This handles the RX path on SDIO.
- *
- * The SDIO bus driver calls the "irq" routine when data is available.
- * This is not a traditional interrupt routine since the SDIO bus
- * driver calls us from its irq thread context. Because of this
- * sleeping in the SDIO RX IRQ routine is okay.
- *
- * From there on, we obtain the size of the data that is available,
- * allocate an skb, copy it and then pass it to the generic driver's
- * RX routine [i2400m_rx()].
- *
- * ROADMAP
- *
- * i2400ms_irq()
- * i2400ms_rx()
- * __i2400ms_rx_get_size()
- * i2400m_is_boot_barker()
- * i2400m_rx()
- *
- * i2400ms_rx_setup()
- *
- * i2400ms_rx_release()
- */
-#include <linux/workqueue.h>
-#include <linux/wait.h>
-#include <linux/skbuff.h>
-#include <linux/mmc/sdio.h>
-#include <linux/mmc/sdio_func.h>
-#include <linux/slab.h>
-#include "i2400m-sdio.h"
-
-#define D_SUBMODULE rx
-#include "sdio-debug-levels.h"
-
-static const __le32 i2400m_ACK_BARKER[4] = {
- __constant_cpu_to_le32(I2400M_ACK_BARKER),
- __constant_cpu_to_le32(I2400M_ACK_BARKER),
- __constant_cpu_to_le32(I2400M_ACK_BARKER),
- __constant_cpu_to_le32(I2400M_ACK_BARKER)
-};
-
-
-/*
- * Read and return the amount of bytes available for RX
- *
- * The RX size has to be read like this: byte reads of three
- * sequential locations; then glue'em together.
- *
- * sdio_readl() doesn't work.
- */
-static ssize_t __i2400ms_rx_get_size(struct i2400ms *i2400ms)
-{
- int ret, cnt, val;
- ssize_t rx_size;
- unsigned xfer_size_addr;
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &i2400ms->func->dev;
-
- d_fnstart(7, dev, "(i2400ms %p)\n", i2400ms);
- xfer_size_addr = I2400MS_INTR_GET_SIZE_ADDR;
- rx_size = 0;
- for (cnt = 0; cnt < 3; cnt++) {
- val = sdio_readb(func, xfer_size_addr + cnt, &ret);
- if (ret < 0) {
- dev_err(dev, "RX: Can't read byte %d of RX size from "
- "0x%08x: %d\n", cnt, xfer_size_addr + cnt, ret);
- rx_size = ret;
- goto error_read;
- }
- rx_size = rx_size << 8 | (val & 0xff);
- }
- d_printf(6, dev, "RX: rx_size is %ld\n", (long) rx_size);
-error_read:
- d_fnend(7, dev, "(i2400ms %p) = %ld\n", i2400ms, (long) rx_size);
- return rx_size;
-}
-
-
-/*
- * Read data from the device (when in normal)
- *
- * Allocate an SKB of the right size, read the data in and then
- * deliver it to the generic layer.
- *
- * We also check for a reboot barker. That means the device died and
- * we have to reboot it.
- */
-static
-void i2400ms_rx(struct i2400ms *i2400ms)
-{
- int ret;
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &func->dev;
- struct i2400m *i2400m = &i2400ms->i2400m;
- struct sk_buff *skb;
- ssize_t rx_size;
-
- d_fnstart(7, dev, "(i2400ms %p)\n", i2400ms);
- rx_size = __i2400ms_rx_get_size(i2400ms);
- if (rx_size < 0) {
- ret = rx_size;
- goto error_get_size;
- }
- /*
- * Hardware quirk: make sure to clear the INTR status register
- * AFTER getting the data transfer size.
- */
- sdio_writeb(func, 1, I2400MS_INTR_CLEAR_ADDR, &ret);
-
- ret = -ENOMEM;
- skb = alloc_skb(rx_size, GFP_ATOMIC);
- if (NULL == skb) {
- dev_err(dev, "RX: unable to alloc skb\n");
- goto error_alloc_skb;
- }
- ret = sdio_memcpy_fromio(func, skb->data,
- I2400MS_DATA_ADDR, rx_size);
- if (ret < 0) {
- dev_err(dev, "RX: SDIO data read failed: %d\n", ret);
- goto error_memcpy_fromio;
- }
-
- rmb(); /* make sure we get boot_mode from dev_reset_handle */
- if (unlikely(i2400m->boot_mode == 1)) {
- spin_lock(&i2400m->rx_lock);
- i2400ms->bm_ack_size = rx_size;
- spin_unlock(&i2400m->rx_lock);
- memcpy(i2400m->bm_ack_buf, skb->data, rx_size);
- wake_up(&i2400ms->bm_wfa_wq);
- d_printf(5, dev, "RX: SDIO boot mode message\n");
- kfree_skb(skb);
- goto out;
- }
- ret = -EIO;
- if (unlikely(rx_size < sizeof(__le32))) {
- dev_err(dev, "HW BUG? only %zu bytes received\n", rx_size);
- goto error_bad_size;
- }
- if (likely(i2400m_is_d2h_barker(skb->data))) {
- skb_put(skb, rx_size);
- i2400m_rx(i2400m, skb);
- } else if (unlikely(i2400m_is_boot_barker(i2400m,
- skb->data, rx_size))) {
- ret = i2400m_dev_reset_handle(i2400m, "device rebooted");
- dev_err(dev, "RX: SDIO reboot barker\n");
- kfree_skb(skb);
- } else {
- i2400m_unknown_barker(i2400m, skb->data, rx_size);
- kfree_skb(skb);
- }
-out:
- d_fnend(7, dev, "(i2400ms %p) = void\n", i2400ms);
- return;
-
-error_memcpy_fromio:
- kfree_skb(skb);
-error_alloc_skb:
-error_get_size:
-error_bad_size:
- d_fnend(7, dev, "(i2400ms %p) = %d\n", i2400ms, ret);
-}
-
-
-/*
- * Process an interrupt from the SDIO card
- *
- * FIXME: need to process other events that are not just ready-to-read
- *
- * Checks there is data ready and then proceeds to read it.
- */
-static
-void i2400ms_irq(struct sdio_func *func)
-{
- int ret;
- struct i2400ms *i2400ms = sdio_get_drvdata(func);
- struct device *dev = &func->dev;
- int val;
-
- d_fnstart(6, dev, "(i2400ms %p)\n", i2400ms);
- val = sdio_readb(func, I2400MS_INTR_STATUS_ADDR, &ret);
- if (ret < 0) {
- dev_err(dev, "RX: Can't read interrupt status: %d\n", ret);
- goto error_no_irq;
- }
- if (!val) {
- dev_err(dev, "RX: BUG? got IRQ but no interrupt ready?\n");
- goto error_no_irq;
- }
- i2400ms_rx(i2400ms);
-error_no_irq:
- d_fnend(6, dev, "(i2400ms %p) = void\n", i2400ms);
-}
-
-
-/*
- * Setup SDIO RX
- *
- * Hooks up the IRQ handler and then enables IRQs.
- */
-int i2400ms_rx_setup(struct i2400ms *i2400ms)
-{
- int result;
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &func->dev;
- struct i2400m *i2400m = &i2400ms->i2400m;
-
- d_fnstart(5, dev, "(i2400ms %p)\n", i2400ms);
-
- init_waitqueue_head(&i2400ms->bm_wfa_wq);
- spin_lock(&i2400m->rx_lock);
- i2400ms->bm_wait_result = -EINPROGRESS;
- /*
- * Before we are about to enable the RX interrupt, make sure
- * bm_ack_size is cleared to -EINPROGRESS which indicates
- * no RX interrupt happened yet or the previous interrupt
- * has been handled, we are ready to take the new interrupt
- */
- i2400ms->bm_ack_size = -EINPROGRESS;
- spin_unlock(&i2400m->rx_lock);
-
- sdio_claim_host(func);
- result = sdio_claim_irq(func, i2400ms_irq);
- if (result < 0) {
- dev_err(dev, "Cannot claim IRQ: %d\n", result);
- goto error_irq_claim;
- }
- result = 0;
- sdio_writeb(func, 1, I2400MS_INTR_ENABLE_ADDR, &result);
- if (result < 0) {
- sdio_release_irq(func);
- dev_err(dev, "Failed to enable interrupts %d\n", result);
- }
-error_irq_claim:
- sdio_release_host(func);
- d_fnend(5, dev, "(i2400ms %p) = %d\n", i2400ms, result);
- return result;
-}
-
-
-/*
- * Tear down SDIO RX
- *
- * Disables IRQs in the device and removes the IRQ handler.
- */
-void i2400ms_rx_release(struct i2400ms *i2400ms)
-{
- int result;
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &func->dev;
- struct i2400m *i2400m = &i2400ms->i2400m;
-
- d_fnstart(5, dev, "(i2400ms %p)\n", i2400ms);
- spin_lock(&i2400m->rx_lock);
- i2400ms->bm_ack_size = -EINTR;
- spin_unlock(&i2400m->rx_lock);
- wake_up_all(&i2400ms->bm_wfa_wq);
- sdio_claim_host(func);
- sdio_writeb(func, 0, I2400MS_INTR_ENABLE_ADDR, &result);
- sdio_release_irq(func);
- sdio_release_host(func);
- d_fnend(5, dev, "(i2400ms %p) = %d\n", i2400ms, result);
-}
+++ /dev/null
-/*
- * Intel Wireless WiMAX Connection 2400m
- * SDIO TX transaction backends
- *
- *
- * Copyright (C) 2007-2008 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 <linux-wimax@intel.com>
- * Dirk Brandewie <dirk.j.brandewie@intel.com>
- * - Initial implementation
- *
- *
- * Takes the TX messages in the i2400m's driver TX FIFO and sends them
- * to the device until there are no more.
- *
- * If we fail sending the message, we just drop it. There isn't much
- * we can do at this point. Most of the traffic is network, which has
- * recovery methods for dropped packets.
- *
- * The SDIO functions are not atomic, so we can't run from the context
- * where i2400m->bus_tx_kick() [i2400ms_bus_tx_kick()] is being called
- * (some times atomic). Thus, the actual TX work is deferred to a
- * workqueue.
- *
- * ROADMAP
- *
- * i2400ms_bus_tx_kick()
- * i2400ms_tx_submit() [through workqueue]
- *
- * i2400m_tx_setup()
- *
- * i2400m_tx_release()
- */
-#include <linux/mmc/sdio_func.h>
-#include "i2400m-sdio.h"
-
-#define D_SUBMODULE tx
-#include "sdio-debug-levels.h"
-
-
-/*
- * Pull TX transations from the TX FIFO and send them to the device
- * until there are no more.
- */
-static
-void i2400ms_tx_submit(struct work_struct *ws)
-{
- int result;
- struct i2400ms *i2400ms = container_of(ws, struct i2400ms, tx_worker);
- struct i2400m *i2400m = &i2400ms->i2400m;
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &func->dev;
- struct i2400m_msg_hdr *tx_msg;
- size_t tx_msg_size;
-
- d_fnstart(4, dev, "(i2400ms %p, i2400m %p)\n", i2400ms, i2400ms);
-
- while (NULL != (tx_msg = i2400m_tx_msg_get(i2400m, &tx_msg_size))) {
- d_printf(2, dev, "TX: submitting %zu bytes\n", tx_msg_size);
- d_dump(5, dev, tx_msg, tx_msg_size);
-
- sdio_claim_host(func);
- result = sdio_memcpy_toio(func, 0, tx_msg, tx_msg_size);
- sdio_release_host(func);
-
- i2400m_tx_msg_sent(i2400m);
-
- if (result < 0) {
- dev_err(dev, "TX: cannot submit TX; tx_msg @%zu %zu B:"
- " %d\n", (void *) tx_msg - i2400m->tx_buf,
- tx_msg_size, result);
- }
-
- if (result == -ETIMEDOUT) {
- i2400m_error_recovery(i2400m);
- break;
- }
- d_printf(2, dev, "TX: %zub submitted\n", tx_msg_size);
- }
-
- d_fnend(4, dev, "(i2400ms %p) = void\n", i2400ms);
-}
-
-
-/*
- * The generic driver notifies us that there is data ready for TX
- *
- * Schedule a run of i2400ms_tx_submit() to handle it.
- */
-void i2400ms_bus_tx_kick(struct i2400m *i2400m)
-{
- struct i2400ms *i2400ms = container_of(i2400m, struct i2400ms, i2400m);
- struct device *dev = &i2400ms->func->dev;
- unsigned long flags;
-
- d_fnstart(3, dev, "(i2400m %p) = void\n", i2400m);
-
- /* schedule tx work, this is because tx may block, therefore
- * it has to run in a thread context.
- */
- spin_lock_irqsave(&i2400m->tx_lock, flags);
- if (i2400ms->tx_workqueue != NULL)
- queue_work(i2400ms->tx_workqueue, &i2400ms->tx_worker);
- spin_unlock_irqrestore(&i2400m->tx_lock, flags);
-
- d_fnend(3, dev, "(i2400m %p) = void\n", i2400m);
-}
-
-int i2400ms_tx_setup(struct i2400ms *i2400ms)
-{
- int result;
- struct device *dev = &i2400ms->func->dev;
- struct i2400m *i2400m = &i2400ms->i2400m;
- struct workqueue_struct *tx_workqueue;
- unsigned long flags;
-
- d_fnstart(5, dev, "(i2400ms %p)\n", i2400ms);
-
- INIT_WORK(&i2400ms->tx_worker, i2400ms_tx_submit);
- snprintf(i2400ms->tx_wq_name, sizeof(i2400ms->tx_wq_name),
- "%s-tx", i2400m->wimax_dev.name);
- tx_workqueue =
- create_singlethread_workqueue(i2400ms->tx_wq_name);
- if (tx_workqueue == NULL) {
- dev_err(dev, "TX: failed to create workqueue\n");
- result = -ENOMEM;
- } else
- result = 0;
- spin_lock_irqsave(&i2400m->tx_lock, flags);
- i2400ms->tx_workqueue = tx_workqueue;
- spin_unlock_irqrestore(&i2400m->tx_lock, flags);
- d_fnend(5, dev, "(i2400ms %p) = %d\n", i2400ms, result);
- return result;
-}
-
-void i2400ms_tx_release(struct i2400ms *i2400ms)
-{
- struct i2400m *i2400m = &i2400ms->i2400m;
- struct workqueue_struct *tx_workqueue;
- unsigned long flags;
-
- tx_workqueue = i2400ms->tx_workqueue;
-
- spin_lock_irqsave(&i2400m->tx_lock, flags);
- i2400ms->tx_workqueue = NULL;
- spin_unlock_irqrestore(&i2400m->tx_lock, flags);
-
- if (tx_workqueue)
- destroy_workqueue(tx_workqueue);
-}
+++ /dev/null
-/*
- * Intel Wireless WiMAX Connection 2400m
- * Linux driver model glue for the SDIO device, reset & fw upload
- *
- *
- * Copyright (C) 2007-2008 Intel Corporation <linux-wimax@intel.com>
- * Dirk Brandewie <dirk.j.brandewie@intel.com>
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- * Yanir Lubetkin <yanirx.lubetkin@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * See i2400m-sdio.h for a general description of this driver.
- *
- * This file implements driver model glue, and hook ups for the
- * generic driver to implement the bus-specific functions (device
- * communication setup/tear down, firmware upload and resetting).
- *
- * ROADMAP
- *
- * i2400m_probe()
- * alloc_netdev()
- * i2400ms_netdev_setup()
- * i2400ms_init()
- * i2400m_netdev_setup()
- * i2400ms_enable_function()
- * i2400m_setup()
- *
- * i2400m_remove()
- * i2400m_release()
- * free_netdev(net_dev)
- *
- * i2400ms_bus_reset() Called by i2400m_reset
- * __i2400ms_reset()
- * __i2400ms_send_barker()
- */
-
-#include <linux/slab.h>
-#include <linux/debugfs.h>
-#include <linux/mmc/sdio_ids.h>
-#include <linux/mmc/sdio.h>
-#include <linux/mmc/sdio_func.h>
-#include "i2400m-sdio.h"
-#include <linux/wimax/i2400m.h>
-#include <linux/module.h>
-
-#define D_SUBMODULE main
-#include "sdio-debug-levels.h"
-
-/* IOE WiMAX function timeout in seconds */
-static int ioe_timeout = 2;
-module_param(ioe_timeout, int, 0);
-
-static char i2400ms_debug_params[128];
-module_param_string(debug, i2400ms_debug_params, sizeof(i2400ms_debug_params),
- 0644);
-MODULE_PARM_DESC(debug,
- "String of space-separated NAME:VALUE pairs, where NAMEs "
- "are the different debug submodules and VALUE are the "
- "initial debug value to set.");
-
-/* Our firmware file name list */
-static const char *i2400ms_bus_fw_names[] = {
-#define I2400MS_FW_FILE_NAME "i2400m-fw-sdio-1.3.sbcf"
- I2400MS_FW_FILE_NAME,
- NULL
-};
-
-
-static const struct i2400m_poke_table i2400ms_pokes[] = {
- I2400M_FW_POKE(0x6BE260, 0x00000088),
- I2400M_FW_POKE(0x080550, 0x00000005),
- I2400M_FW_POKE(0xAE0000, 0x00000000),
- I2400M_FW_POKE(0x000000, 0x00000000), /* MUST be 0 terminated or bad
- * things will happen */
-};
-
-/*
- * Enable the SDIO function
- *
- * Tries to enable the SDIO function; might fail if it is still not
- * ready (in some hardware, the SDIO WiMAX function is only enabled
- * when we ask it to explicitly doing). Tries until a timeout is
- * reached.
- *
- * The @maxtries argument indicates how many times (at most) it should
- * be tried to enable the function. 0 means forever. This acts along
- * with the timeout (ie: it'll stop trying as soon as the maximum
- * number of tries is reached _or_ as soon as the timeout is reached).
- *
- * The reverse of this is...sdio_disable_function()
- *
- * Returns: 0 if the SDIO function was enabled, < 0 errno code on
- * error (-ENODEV when it was unable to enable the function).
- */
-static
-int i2400ms_enable_function(struct i2400ms *i2400ms, unsigned maxtries)
-{
- struct sdio_func *func = i2400ms->func;
- u64 timeout;
- int err;
- struct device *dev = &func->dev;
- unsigned tries = 0;
-
- d_fnstart(3, dev, "(func %p)\n", func);
- /* Setup timeout (FIXME: This needs to read the CIS table to
- * get a real timeout) and then wait for the device to signal
- * it is ready */
- timeout = get_jiffies_64() + ioe_timeout * HZ;
- err = -ENODEV;
- while (err != 0 && time_before64(get_jiffies_64(), timeout)) {
- sdio_claim_host(func);
- /*
- * There is a sillicon bug on the IWMC3200, where the
- * IOE timeout will cause problems on Moorestown
- * platforms (system hang). We explicitly overwrite
- * func->enable_timeout here to work around the issue.
- */
- if (i2400ms->iwmc3200)
- func->enable_timeout = IWMC3200_IOR_TIMEOUT;
- err = sdio_enable_func(func);
- if (0 == err) {
- sdio_release_host(func);
- d_printf(2, dev, "SDIO function enabled\n");
- goto function_enabled;
- }
- d_printf(2, dev, "SDIO function failed to enable: %d\n", err);
- sdio_release_host(func);
- if (maxtries > 0 && ++tries >= maxtries) {
- err = -ETIME;
- break;
- }
- msleep(I2400MS_INIT_SLEEP_INTERVAL);
- }
- /* If timed out, device is not there yet -- get -ENODEV so
- * the device driver core will retry later on. */
- if (err == -ETIME) {
- dev_err(dev, "Can't enable WiMAX function; "
- " has the function been enabled?\n");
- err = -ENODEV;
- }
-function_enabled:
- d_fnend(3, dev, "(func %p) = %d\n", func, err);
- return err;
-}
-
-
-/*
- * Setup minimal device communication infrastructure needed to at
- * least be able to update the firmware.
- *
- * Note the ugly trick: if we are in the probe path
- * (i2400ms->debugfs_dentry == NULL), we only retry function
- * enablement one, to avoid racing with the iwmc3200 top controller.
- */
-static
-int i2400ms_bus_setup(struct i2400m *i2400m)
-{
- int result;
- struct i2400ms *i2400ms =
- container_of(i2400m, struct i2400ms, i2400m);
- struct device *dev = i2400m_dev(i2400m);
- struct sdio_func *func = i2400ms->func;
- int retries;
-
- sdio_claim_host(func);
- result = sdio_set_block_size(func, I2400MS_BLK_SIZE);
- sdio_release_host(func);
- if (result < 0) {
- dev_err(dev, "Failed to set block size: %d\n", result);
- goto error_set_blk_size;
- }
-
- if (i2400ms->iwmc3200 && i2400ms->debugfs_dentry == NULL)
- retries = 1;
- else
- retries = 0;
- result = i2400ms_enable_function(i2400ms, retries);
- if (result < 0) {
- dev_err(dev, "Cannot enable SDIO function: %d\n", result);
- goto error_func_enable;
- }
-
- result = i2400ms_tx_setup(i2400ms);
- if (result < 0)
- goto error_tx_setup;
- result = i2400ms_rx_setup(i2400ms);
- if (result < 0)
- goto error_rx_setup;
- return 0;
-
-error_rx_setup:
- i2400ms_tx_release(i2400ms);
-error_tx_setup:
- sdio_claim_host(func);
- sdio_disable_func(func);
- sdio_release_host(func);
-error_func_enable:
-error_set_blk_size:
- return result;
-}
-
-
-/*
- * Tear down minimal device communication infrastructure needed to at
- * least be able to update the firmware.
- */
-static
-void i2400ms_bus_release(struct i2400m *i2400m)
-{
- struct i2400ms *i2400ms =
- container_of(i2400m, struct i2400ms, i2400m);
- struct sdio_func *func = i2400ms->func;
-
- i2400ms_rx_release(i2400ms);
- i2400ms_tx_release(i2400ms);
- sdio_claim_host(func);
- sdio_disable_func(func);
- sdio_release_host(func);
-}
-
-
-/*
- * Setup driver resources needed to communicate with the device
- *
- * The fw needs some time to settle, and it was just uploaded,
- * so give it a break first. I'd prefer to just wait for the device to
- * send something, but seems the poking we do to enable SDIO stuff
- * interferes with it, so just give it a break before starting...
- */
-static
-int i2400ms_bus_dev_start(struct i2400m *i2400m)
-{
- struct i2400ms *i2400ms = container_of(i2400m, struct i2400ms, i2400m);
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &func->dev;
-
- d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
- msleep(200);
- d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, 0);
- return 0;
-}
-
-
-/*
- * Sends a barker buffer to the device
- *
- * This helper will allocate a kmalloced buffer and use it to transmit
- * (then free it). Reason for this is that the SDIO host controller
- * expects alignment (unknown exactly which) which the stack won't
- * really provide and certain arches/host-controller combinations
- * cannot use stack/vmalloc/text areas for DMA transfers.
- */
-static
-int __i2400ms_send_barker(struct i2400ms *i2400ms,
- const __le32 *barker, size_t barker_size)
-{
- int ret;
- struct sdio_func *func = i2400ms->func;
- struct device *dev = &func->dev;
- void *buffer;
-
- ret = -ENOMEM;
- buffer = kmalloc(I2400MS_BLK_SIZE, GFP_KERNEL);
- if (buffer == NULL)
- goto error_kzalloc;
-
- memcpy(buffer, barker, barker_size);
- sdio_claim_host(func);
- ret = sdio_memcpy_toio(func, 0, buffer, I2400MS_BLK_SIZE);
- sdio_release_host(func);
-
- if (ret < 0)
- d_printf(0, dev, "E: barker error: %d\n", ret);
-
- kfree(buffer);
-error_kzalloc:
- return ret;
-}
-
-
-/*
- * Reset a device at different levels (warm, cold or bus)
- *
- * @i2400ms: device descriptor
- * @reset_type: soft, warm or bus reset (I2400M_RT_WARM/SOFT/BUS)
- *
- * FIXME: not tested -- need to confirm expected effects
- *
- * Warm and cold resets get an SDIO reset if they fail (unimplemented)
- *
- * Warm reset:
- *
- * The device will be fully reset internally, but won't be
- * disconnected from the bus (so no reenumeration will
- * happen). Firmware upload will be necessary.
- *
- * The device will send a reboot barker that will trigger the driver
- * to reinitialize the state via __i2400m_dev_reset_handle.
- *
- *
- * Cold and bus reset:
- *
- * The device will be fully reset internally, disconnected from the
- * bus an a reenumeration will happen. Firmware upload will be
- * necessary. Thus, we don't do any locking or struct
- * reinitialization, as we are going to be fully disconnected and
- * reenumerated.
- *
- * Note we need to return -ENODEV if a warm reset was requested and we
- * had to resort to a bus reset. See i2400m_op_reset(), wimax_reset()
- * and wimax_dev->op_reset.
- *
- * WARNING: no driver state saved/fixed
- */
-static
-int i2400ms_bus_reset(struct i2400m *i2400m, enum i2400m_reset_type rt)
-{
- int result = 0;
- struct i2400ms *i2400ms =
- container_of(i2400m, struct i2400ms, i2400m);
- struct device *dev = i2400m_dev(i2400m);
- static const __le32 i2400m_WARM_BOOT_BARKER[4] = {
- cpu_to_le32(I2400M_WARM_RESET_BARKER),
- cpu_to_le32(I2400M_WARM_RESET_BARKER),
- cpu_to_le32(I2400M_WARM_RESET_BARKER),
- cpu_to_le32(I2400M_WARM_RESET_BARKER),
- };
- static const __le32 i2400m_COLD_BOOT_BARKER[4] = {
- cpu_to_le32(I2400M_COLD_RESET_BARKER),
- cpu_to_le32(I2400M_COLD_RESET_BARKER),
- cpu_to_le32(I2400M_COLD_RESET_BARKER),
- cpu_to_le32(I2400M_COLD_RESET_BARKER),
- };
-
- if (rt == I2400M_RT_WARM)
- result = __i2400ms_send_barker(i2400ms, i2400m_WARM_BOOT_BARKER,
- sizeof(i2400m_WARM_BOOT_BARKER));
- else if (rt == I2400M_RT_COLD)
- result = __i2400ms_send_barker(i2400ms, i2400m_COLD_BOOT_BARKER,
- sizeof(i2400m_COLD_BOOT_BARKER));
- else if (rt == I2400M_RT_BUS) {
-do_bus_reset:
-
- i2400ms_bus_release(i2400m);
-
- /* Wait for the device to settle */
- msleep(40);
-
- result = i2400ms_bus_setup(i2400m);
- } else
- BUG();
- if (result < 0 && rt != I2400M_RT_BUS) {
- dev_err(dev, "%s reset failed (%d); trying SDIO reset\n",
- rt == I2400M_RT_WARM ? "warm" : "cold", result);
- rt = I2400M_RT_BUS;
- goto do_bus_reset;
- }
- return result;
-}
-
-
-static
-void i2400ms_netdev_setup(struct net_device *net_dev)
-{
- struct i2400m *i2400m = net_dev_to_i2400m(net_dev);
- struct i2400ms *i2400ms = container_of(i2400m, struct i2400ms, i2400m);
- i2400ms_init(i2400ms);
- i2400m_netdev_setup(net_dev);
-}
-
-
-/*
- * Debug levels control; see debug.h
- */
-struct d_level D_LEVEL[] = {
- D_SUBMODULE_DEFINE(main),
- D_SUBMODULE_DEFINE(tx),
- D_SUBMODULE_DEFINE(rx),
- D_SUBMODULE_DEFINE(fw),
-};
-size_t D_LEVEL_SIZE = ARRAY_SIZE(D_LEVEL);
-
-
-#define __debugfs_register(prefix, name, parent) \
-do { \
- result = d_level_register_debugfs(prefix, name, parent); \
- if (result < 0) \
- goto error; \
-} while (0)
-
-
-static
-int i2400ms_debugfs_add(struct i2400ms *i2400ms)
-{
- int result;
- struct dentry *dentry = i2400ms->i2400m.wimax_dev.debugfs_dentry;
-
- dentry = debugfs_create_dir("i2400m-sdio", dentry);
- result = PTR_ERR(dentry);
- if (IS_ERR(dentry)) {
- if (result == -ENODEV)
- result = 0; /* No debugfs support */
- goto error;
- }
- i2400ms->debugfs_dentry = dentry;
- __debugfs_register("dl_", main, dentry);
- __debugfs_register("dl_", tx, dentry);
- __debugfs_register("dl_", rx, dentry);
- __debugfs_register("dl_", fw, dentry);
-
- return 0;
-
-error:
- debugfs_remove_recursive(i2400ms->debugfs_dentry);
- i2400ms->debugfs_dentry = NULL;
- return result;
-}
-
-
-static struct device_type i2400ms_type = {
- .name = "wimax",
-};
-
-/*
- * Probe a i2400m interface and register it
- *
- * @func: SDIO function
- * @id: SDIO device ID
- * @returns: 0 if ok, < 0 errno code on error.
- *
- * Alloc a net device, initialize the bus-specific details and then
- * calls the bus-generic initialization routine. That will register
- * the wimax and netdev devices, upload the firmware [using
- * _bus_bm_*()], call _bus_dev_start() to finalize the setup of the
- * communication with the device and then will start to talk to it to
- * finnish setting it up.
- *
- * Initialization is tricky; some instances of the hw are packed with
- * others in a way that requires a third driver that enables the WiMAX
- * function. In those cases, we can't enable the SDIO function and
- * we'll return with -ENODEV. When the driver that enables the WiMAX
- * function does its thing, it has to do a bus_rescan_devices() on the
- * SDIO bus so this driver is called again to enumerate the WiMAX
- * function.
- */
-static
-int i2400ms_probe(struct sdio_func *func,
- const struct sdio_device_id *id)
-{
- int result;
- struct net_device *net_dev;
- struct device *dev = &func->dev;
- struct i2400m *i2400m;
- struct i2400ms *i2400ms;
-
- /* Allocate instance [calls i2400m_netdev_setup() on it]. */
- result = -ENOMEM;
- net_dev = alloc_netdev(sizeof(*i2400ms), "wmx%d",
- i2400ms_netdev_setup);
- if (net_dev == NULL) {
- dev_err(dev, "no memory for network device instance\n");
- goto error_alloc_netdev;
- }
- SET_NETDEV_DEV(net_dev, dev);
- SET_NETDEV_DEVTYPE(net_dev, &i2400ms_type);
- i2400m = net_dev_to_i2400m(net_dev);
- i2400ms = container_of(i2400m, struct i2400ms, i2400m);
- i2400m->wimax_dev.net_dev = net_dev;
- i2400ms->func = func;
- sdio_set_drvdata(func, i2400ms);
-
- i2400m->bus_tx_block_size = I2400MS_BLK_SIZE;
- /*
- * Room required in the TX queue for SDIO message to accommodate
- * a smallest payload while allocating header space is 224 bytes,
- * which is the smallest message size(the block size 256 bytes)
- * minus the smallest message header size(32 bytes).
- */
- i2400m->bus_tx_room_min = I2400MS_BLK_SIZE - I2400M_PL_ALIGN * 2;
- i2400m->bus_pl_size_max = I2400MS_PL_SIZE_MAX;
- i2400m->bus_setup = i2400ms_bus_setup;
- i2400m->bus_dev_start = i2400ms_bus_dev_start;
- i2400m->bus_dev_stop = NULL;
- i2400m->bus_release = i2400ms_bus_release;
- i2400m->bus_tx_kick = i2400ms_bus_tx_kick;
- i2400m->bus_reset = i2400ms_bus_reset;
- /* The iwmc3200-wimax sometimes requires the driver to try
- * hard when we paint it into a corner. */
- i2400m->bus_bm_retries = I2400M_SDIO_BOOT_RETRIES;
- i2400m->bus_bm_cmd_send = i2400ms_bus_bm_cmd_send;
- i2400m->bus_bm_wait_for_ack = i2400ms_bus_bm_wait_for_ack;
- i2400m->bus_fw_names = i2400ms_bus_fw_names;
- i2400m->bus_bm_mac_addr_impaired = 1;
- i2400m->bus_bm_pokes_table = &i2400ms_pokes[0];
-
- switch (func->device) {
- case SDIO_DEVICE_ID_INTEL_IWMC3200WIMAX:
- case SDIO_DEVICE_ID_INTEL_IWMC3200WIMAX_2G5:
- i2400ms->iwmc3200 = 1;
- break;
- default:
- i2400ms->iwmc3200 = 0;
- }
-
- result = i2400m_setup(i2400m, I2400M_BRI_NO_REBOOT);
- if (result < 0) {
- dev_err(dev, "cannot setup device: %d\n", result);
- goto error_setup;
- }
-
- result = i2400ms_debugfs_add(i2400ms);
- if (result < 0) {
- dev_err(dev, "cannot create SDIO debugfs: %d\n",
- result);
- goto error_debugfs_add;
- }
- return 0;
-
-error_debugfs_add:
- i2400m_release(i2400m);
-error_setup:
- sdio_set_drvdata(func, NULL);
- free_netdev(net_dev);
-error_alloc_netdev:
- return result;
-}
-
-
-static
-void i2400ms_remove(struct sdio_func *func)
-{
- struct device *dev = &func->dev;
- struct i2400ms *i2400ms = sdio_get_drvdata(func);
- struct i2400m *i2400m = &i2400ms->i2400m;
- struct net_device *net_dev = i2400m->wimax_dev.net_dev;
-
- d_fnstart(3, dev, "SDIO func %p\n", func);
- debugfs_remove_recursive(i2400ms->debugfs_dentry);
- i2400ms->debugfs_dentry = NULL;
- i2400m_release(i2400m);
- sdio_set_drvdata(func, NULL);
- free_netdev(net_dev);
- d_fnend(3, dev, "SDIO func %p\n", func);
-}
-
-static
-const struct sdio_device_id i2400ms_sdio_ids[] = {
- /* Intel: i2400m WiMAX (iwmc3200) over SDIO */
- { SDIO_DEVICE(SDIO_VENDOR_ID_INTEL,
- SDIO_DEVICE_ID_INTEL_IWMC3200WIMAX) },
- { SDIO_DEVICE(SDIO_VENDOR_ID_INTEL,
- SDIO_DEVICE_ID_INTEL_IWMC3200WIMAX_2G5) },
- { /* end: all zeroes */ },
-};
-MODULE_DEVICE_TABLE(sdio, i2400ms_sdio_ids);
-
-
-static
-struct sdio_driver i2400m_sdio_driver = {
- .name = KBUILD_MODNAME,
- .probe = i2400ms_probe,
- .remove = i2400ms_remove,
- .id_table = i2400ms_sdio_ids,
-};
-
-
-static
-int __init i2400ms_driver_init(void)
-{
- d_parse_params(D_LEVEL, D_LEVEL_SIZE, i2400ms_debug_params,
- "i2400m_sdio.debug");
- return sdio_register_driver(&i2400m_sdio_driver);
-}
-module_init(i2400ms_driver_init);
-
-
-static
-void __exit i2400ms_driver_exit(void)
-{
- sdio_unregister_driver(&i2400m_sdio_driver);
-}
-module_exit(i2400ms_driver_exit);
-
-
-MODULE_AUTHOR("Intel Corporation <linux-wimax@intel.com>");
-MODULE_DESCRIPTION("Intel 2400M WiMAX networking for SDIO");
-MODULE_LICENSE("GPL");
-MODULE_FIRMWARE(I2400MS_FW_FILE_NAME);
projects / platform / kernel / linux-3.10.git / commitdiff