109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
![]() |
/*
|
||
|
* ---------------------------------------------------------------------------
|
||
|
* FILE: init_hw.c
|
||
|
*
|
||
|
* PURPOSE:
|
||
|
* Use the HIP core lib to initialise the UniFi chip.
|
||
|
* It is part of the porting exercise in Linux.
|
||
|
*
|
||
|
* Copyright (C) 2009 by Cambridge Silicon Radio Ltd.
|
||
|
*
|
||
|
* Refer to LICENSE.txt included with this source code for details on
|
||
|
* the license terms.
|
||
|
*
|
||
|
* ---------------------------------------------------------------------------
|
||
|
*/
|
||
|
#include "csr_wifi_hip_unifi.h"
|
||
|
#include "unifi_priv.h"
|
||
|
|
||
|
|
||
|
#define MAX_INIT_ATTEMPTS 4
|
||
|
|
||
|
extern int led_mask;
|
||
|
|
||
|
|
||
|
/*
|
||
|
* ---------------------------------------------------------------------------
|
||
|
* uf_init_hw
|
||
|
*
|
||
|
* Resets hardware, downloads and initialises f/w.
|
||
|
* This function demonstrates how to use the HIP core lib API
|
||
|
* to implement the SME unifi_sys_wifi_on_req() part of the SYS API.
|
||
|
*
|
||
|
* In a simple implementation, all this function needs to do is call
|
||
|
* unifi_init_card() and then unifi_card_info().
|
||
|
* In the Linux implementation, it will retry to initialise UniFi or
|
||
|
* try to debug the reasons if unifi_init_card() returns an error.
|
||
|
*
|
||
|
* Arguments:
|
||
|
* ospriv Pointer to OS driver structure for the device.
|
||
|
*
|
||
|
* Returns:
|
||
|
* O on success, non-zero otherwise.
|
||
|
*
|
||
|
* ---------------------------------------------------------------------------
|
||
|
*/
|
||
|
int
|
||
|
uf_init_hw(unifi_priv_t *priv)
|
||
|
{
|
||
|
int attempts = 0;
|
||
|
int priv_instance;
|
||
|
CsrResult csrResult = CSR_RESULT_FAILURE;
|
||
|
|
||
|
priv_instance = uf_find_priv(priv);
|
||
|
if (priv_instance == -1) {
|
||
|
unifi_warning(priv, "uf_init_hw: Unknown priv instance, will use fw_init[0]\n");
|
||
|
priv_instance = 0;
|
||
|
}
|
||
|
|
||
|
while (1) {
|
||
|
if (attempts > MAX_INIT_ATTEMPTS) {
|
||
|
unifi_error(priv, "Failed to initialise UniFi after %d attempts, "
|
||
|
"giving up.\n",
|
||
|
attempts);
|
||
|
break;
|
||
|
}
|
||
|
attempts++;
|
||
|
|
||
|
unifi_info(priv, "Initialising UniFi, attempt %d\n", attempts);
|
||
|
|
||
|
if (fw_init[priv_instance] > 0) {
|
||
|
unifi_notice(priv, "f/w init prevented by module parameter\n");
|
||
|
break;
|
||
|
} else if (fw_init[priv_instance] == 0) {
|
||
|
fw_init[priv_instance] ++;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Initialise driver core. This will perform a reset of UniFi
|
||
|
* internals, but not the SDIO CCCR.
|
||
|
*/
|
||
|
CsrSdioClaim(priv->sdio);
|
||
|
csrResult = unifi_init_card(priv->card, led_mask);
|
||
|
CsrSdioRelease(priv->sdio);
|
||
|
|
||
|
if (csrResult == CSR_WIFI_HIP_RESULT_NO_DEVICE) {
|
||
|
return CsrHipResultToStatus(csrResult);
|
||
|
}
|
||
|
if (csrResult == CSR_WIFI_HIP_RESULT_NOT_FOUND) {
|
||
|
unifi_error(priv, "Firmware file required, but not found.\n");
|
||
|
return CsrHipResultToStatus(csrResult);
|
||
|
}
|
||
|
if (csrResult != CSR_RESULT_SUCCESS) {
|
||
|
/* failed. Reset h/w and try again */
|
||
|
unifi_error(priv, "Failed to initialise UniFi chip.\n");
|
||
|
continue;
|
||
|
}
|
||
|
|
||
|
/* Get the version information from the lib_hip */
|
||
|
unifi_card_info(priv->card, &priv->card_info);
|
||
|
|
||
|
return CsrHipResultToStatus(csrResult);
|
||
|
}
|
||
|
|
||
|
return CsrHipResultToStatus(csrResult);
|
||
|
|
||
|
} /* uf_init_hw */
|
||
|
|
||
|
|