*/
#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"
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"
* 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 sdio_func *func)
+int i2400ms_enable_function(struct sdio_func *func, unsigned maxtries)
{
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
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 (func->device == SDIO_DEVICE_ID_INTEL_IWMC3200WIMAX)
+ func->enable_timeout = IWMC3200_IOR_TIMEOUT;
err = sdio_enable_func(func);
if (0 == err) {
sdio_release_host(func);
goto function_enabled;
}
d_printf(2, dev, "SDIO function failed to enable: %d\n", err);
- sdio_disable_func(func);
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
d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
msleep(200);
- result = i2400ms_rx_setup(i2400ms);
- if (result < 0)
- goto error_rx_setup;
result = i2400ms_tx_setup(i2400ms);
if (result < 0)
goto error_tx_setup;
d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result);
return result;
- i2400ms_tx_release(i2400ms);
error_tx_setup:
- i2400ms_rx_release(i2400ms);
-error_rx_setup:
+ i2400ms_tx_release(i2400ms);
d_fnend(3, dev, "(i2400m %p) = void\n", i2400m);
return result;
}
struct device *dev = &func->dev;
d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
- i2400ms_rx_release(i2400ms);
i2400ms_tx_release(i2400ms);
d_fnend(3, dev, "(i2400m %p) = void\n", i2400m);
}
* Warm reset:
*
* The device will be fully reset internally, but won't be
- * disconnected from the USB bus (so no reenumeration will
+ * disconnected from the bus (so no reenumeration will
* happen). Firmware upload will be neccessary.
*
- * The device will send a reboot barker in the notification endpoint
- * that will trigger the driver to reinitialize the state
- * automatically from notif.c:i2400m_notification_grok() into
- * i2400m_dev_bootstrap_delayed().
+ * The device will send a reboot barker that will trigger the driver
+ * to reinitialize the state via __i2400m_dev_reset_handle.
+ *
*
- * Cold and bus (USB) reset:
+ * Cold and bus reset:
*
* The device will be fully reset internally, disconnected from the
- * USB bus an a reenumeration will happen. Firmware upload will be
+ * bus an a reenumeration will happen. Firmware upload will be
* neccessary. Thus, we don't do any locking or struct
* reinitialization, as we are going to be fully disconnected and
* reenumerated.
if (i2400m->wimax_dev.net_dev->reg_state == NETREG_REGISTERED)
netif_tx_disable(i2400m->wimax_dev.net_dev);
+ i2400ms_rx_release(i2400ms);
sdio_claim_host(i2400ms->func);
sdio_disable_func(i2400ms->func);
sdio_release_host(i2400ms->func);
/* Wait for the device to settle */
msleep(40);
- result = i2400ms_enable_function(i2400ms->func);
+ result = i2400ms_enable_function(i2400ms->func, 0);
+ if (result >= 0)
+ i2400ms_rx_setup(i2400ms);
} else
BUG();
if (result < 0 && rt != I2400M_RT_BUS) {
}
+static struct device_type i2400ms_type = {
+ .name = "wimax",
+};
+
/*
* Probe a i2400m interface and register it
*
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;
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 = I3200_BOOT_RETRIES;
+ 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;
goto error_set_blk_size;
}
- result = i2400ms_enable_function(i2400ms->func);
+ result = i2400ms_enable_function(i2400ms->func, 1);
if (result < 0) {
dev_err(dev, "Cannot enable SDIO function: %d\n", result);
goto error_func_enable;
}
+ /*
+ * Before we are enabling the device interrupt register, make
+ * sure the buffer used during bootmode operation is setup so
+ * when the first D2H data interrupt comes, the memory is
+ * available for copying the D2H data.
+ */
+ result = i2400m_bm_buf_alloc(i2400m);
+ if (result < 0) {
+ dev_err(dev, "cannot allocate SDIO bootmode buffer\n");
+ goto error_bootmode_buf_setup;
+ }
+
+ result = i2400ms_rx_setup(i2400ms);
+ if (result < 0)
+ goto error_rx_setup;
+
result = i2400m_setup(i2400m, I2400M_BRI_NO_REBOOT);
if (result < 0) {
dev_err(dev, "cannot setup device: %d\n", result);
error_debugfs_add:
i2400m_release(i2400m);
error_setup:
+ i2400ms_rx_release(i2400ms);
+error_rx_setup:
+ i2400m_bm_buf_free(i2400m);
+error_bootmode_buf_setup:
sdio_claim_host(func);
sdio_disable_func(func);
sdio_release_host(func);
d_fnstart(3, dev, "SDIO func %p\n", func);
debugfs_remove_recursive(i2400ms->debugfs_dentry);
+ i2400ms_rx_release(i2400ms);
i2400m_release(i2400m);
sdio_set_drvdata(func, NULL);
sdio_claim_host(func);
d_fnend(3, dev, "SDIO func %p\n", func);
}
-enum {
- I2400MS_INTEL_VID = 0x89,
-};
-
static
const struct sdio_device_id i2400ms_sdio_ids[] = {
- /* Intel: i2400m WiMAX over SDIO */
- { SDIO_DEVICE(I2400MS_INTEL_VID, 0x1402) },
- { }, /* end: all zeroes */
+ /* Intel: i2400m WiMAX (iwmc3200) over SDIO */
+ { SDIO_DEVICE(SDIO_VENDOR_ID_INTEL,
+ SDIO_DEVICE_ID_INTEL_IWMC3200WIMAX) },
+ { /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, 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);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff