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tegrakernel/kernel/nvidia/drivers/net/wireless/bcmdhd_pcie/bcmsdh_linux.c

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/*
* SDIO access interface for drivers - linux specific (pci only)
*
* Portions of this code are copyright (c) 2017 Cypress Semiconductor Corporation
*
* Copyright (C) 1999-2017, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
*
*
* <<Broadcom-WL-IPTag/Open:>>
*
* $Id: bcmsdh_linux.c 662741 2016-11-08 09:37:17Z $
*/
/**
* @file bcmsdh_linux.c
*/
#define __UNDEF_NO_VERSION__
#include <typedefs.h>
#include <linuxver.h>
#include <linux/pci.h>
#include <linux/completion.h>
#include <osl.h>
#include <pcicfg.h>
#include <bcmdefs.h>
#include <bcmdevs.h>
#include <linux/irq.h>
extern void dhdsdio_isr(void * args);
#include <bcmutils.h>
#include <dngl_stats.h>
#include <dhd.h>
#if defined(CONFIG_ARCH_ODIN)
#include <linux/platform_data/gpio-odin.h>
#endif /* defined(CONFIG_ARCH_ODIN) */
#include <dhd_linux.h>
/* driver info, initialized when bcmsdh_register is called */
static bcmsdh_driver_t drvinfo = {NULL, NULL, NULL, NULL};
typedef enum {
DHD_INTR_INVALID = 0,
DHD_INTR_INBAND,
DHD_INTR_HWOOB,
DHD_INTR_SWOOB
} DHD_HOST_INTR_TYPE;
/* the BCMSDH module comprises the generic part (bcmsdh.c) and OS specific layer (e.g.
* bcmsdh_linux.c). Put all OS specific variables (e.g. irq number and flags) here rather
* than in the common structure bcmsdh_info. bcmsdh_info only keeps a handle (os_ctx) to this
* structure.
*/
typedef struct bcmsdh_os_info {
DHD_HOST_INTR_TYPE intr_type;
int oob_irq_num; /* valid when hardware or software oob in use */
unsigned long oob_irq_flags; /* valid when hardware or software oob in use */
bool oob_irq_registered;
bool oob_irq_enabled;
bool oob_irq_wake_enabled;
spinlock_t oob_irq_spinlock;
bcmsdh_cb_fn_t oob_irq_handler;
void *oob_irq_handler_context;
void *context; /* context returned from upper layer */
void *sdioh; /* handle to lower layer (sdioh) */
void *dev; /* handle to the underlying device */
bool dev_wake_enabled;
} bcmsdh_os_info_t;
/* debugging macros */
#define SDLX_MSG(x)
/**
* Checks to see if vendor and device IDs match a supported SDIO Host Controller.
*/
bool
bcmsdh_chipmatch(uint16 vendor, uint16 device)
{
/* Add other vendors and devices as required */
#ifdef BCMSDIOH_STD
/* Check for Arasan host controller */
if (vendor == VENDOR_SI_IMAGE) {
return (TRUE);
}
/* Check for BRCM 27XX Standard host controller */
if (device == BCM27XX_SDIOH_ID && vendor == VENDOR_BROADCOM) {
return (TRUE);
}
/* Check for BRCM Standard host controller */
if (device == SDIOH_FPGA_ID && vendor == VENDOR_BROADCOM) {
return (TRUE);
}
/* Check for TI PCIxx21 Standard host controller */
if (device == PCIXX21_SDIOH_ID && vendor == VENDOR_TI) {
return (TRUE);
}
if (device == PCIXX21_SDIOH0_ID && vendor == VENDOR_TI) {
return (TRUE);
}
/* Ricoh R5C822 Standard SDIO Host */
if (device == R5C822_SDIOH_ID && vendor == VENDOR_RICOH) {
return (TRUE);
}
/* JMicron Standard SDIO Host */
if (device == JMICRON_SDIOH_ID && vendor == VENDOR_JMICRON) {
return (TRUE);
}
#endif /* BCMSDIOH_STD */
#ifdef BCMSDIOH_SPI
/* This is the PciSpiHost. */
if (device == SPIH_FPGA_ID && vendor == VENDOR_BROADCOM) {
printf("Found PCI SPI Host Controller\n");
return (TRUE);
}
#endif /* BCMSDIOH_SPI */
return (FALSE);
}
void* bcmsdh_probe(osl_t *osh, void *dev, void *sdioh, void *adapter_info, uint bus_type,
uint bus_num, uint slot_num)
{
ulong regs;
bcmsdh_info_t *bcmsdh;
uint32 vendevid;
bcmsdh_os_info_t *bcmsdh_osinfo = NULL;
#ifdef OOB_PARAM
wifi_adapter_info_t *adapter = (wifi_adapter_info_t *)adapter_info;
#endif /* OOB_PARAM */
bcmsdh = bcmsdh_attach(osh, sdioh, &regs);
if (bcmsdh == NULL) {
SDLX_MSG(("%s: bcmsdh_attach failed\n", __FUNCTION__));
goto err;
}
bcmsdh_osinfo = MALLOC(osh, sizeof(bcmsdh_os_info_t));
if (bcmsdh_osinfo == NULL) {
SDLX_MSG(("%s: failed to allocate bcmsdh_os_info_t\n", __FUNCTION__));
goto err;
}
bzero((char *)bcmsdh_osinfo, sizeof(bcmsdh_os_info_t));
bcmsdh->os_cxt = bcmsdh_osinfo;
bcmsdh_osinfo->sdioh = sdioh;
bcmsdh_osinfo->dev = dev;
osl_set_bus_handle(osh, bcmsdh);
#if !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
if (dev && device_init_wakeup(dev, true) == 0)
bcmsdh_osinfo->dev_wake_enabled = TRUE;
#endif /* !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36)) */
#if defined(OOB_INTR_ONLY)
OOB_PARAM_IF(!(adapter->oob_disable)) {
spin_lock_init(&bcmsdh_osinfo->oob_irq_spinlock);
/* Get customer specific OOB IRQ parametres: IRQ number as IRQ type */
bcmsdh_osinfo->oob_irq_num = wifi_platform_get_irq_number(adapter_info,
&bcmsdh_osinfo->oob_irq_flags);
if (bcmsdh_osinfo->oob_irq_num < 0) {
SDLX_MSG(("%s: Host OOB irq is not defined\n", __FUNCTION__));
goto err;
}
}
#endif /* defined(OOB_INTR_ONLY) */
/* Read the vendor/device ID from the CIS */
vendevid = bcmsdh_query_device(bcmsdh);
/* try to attach to the target device */
bcmsdh_osinfo->context = drvinfo.probe((vendevid >> 16), (vendevid & 0xFFFF), bus_num,
slot_num, 0, bus_type, (void *)regs, osh, bcmsdh);
if (bcmsdh_osinfo->context == NULL) {
SDLX_MSG(("%s: device attach failed\n", __FUNCTION__));
goto err;
}
return bcmsdh;
/* error handling */
err:
if (bcmsdh != NULL)
bcmsdh_detach(osh, bcmsdh);
if (bcmsdh_osinfo != NULL)
MFREE(osh, bcmsdh_osinfo, sizeof(bcmsdh_os_info_t));
return NULL;
}
int bcmsdh_remove(bcmsdh_info_t *bcmsdh)
{
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
#if !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
if (bcmsdh_osinfo->dev)
device_init_wakeup(bcmsdh_osinfo->dev, false);
bcmsdh_osinfo->dev_wake_enabled = FALSE;
#endif /* !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36)) */
drvinfo.remove(bcmsdh_osinfo->context);
MFREE(bcmsdh->osh, bcmsdh->os_cxt, sizeof(bcmsdh_os_info_t));
bcmsdh_detach(bcmsdh->osh, bcmsdh);
return 0;
}
int bcmsdh_suspend(bcmsdh_info_t *bcmsdh)
{
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
if (drvinfo.suspend && drvinfo.suspend(bcmsdh_osinfo->context))
return -EBUSY;
return 0;
}
int bcmsdh_resume(bcmsdh_info_t *bcmsdh)
{
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
if (drvinfo.resume)
return drvinfo.resume(bcmsdh_osinfo->context);
return 0;
}
extern int bcmsdh_register_client_driver(void);
extern void bcmsdh_unregister_client_driver(void);
extern int sdio_func_reg_notify(void* semaphore);
extern void sdio_func_unreg_notify(void);
#if defined(BCMLXSDMMC)
int bcmsdh_reg_sdio_notify(void* semaphore)
{
return sdio_func_reg_notify(semaphore);
}
void bcmsdh_unreg_sdio_notify(void)
{
sdio_func_unreg_notify();
}
#endif /* defined(BCMLXSDMMC) */
int
bcmsdh_register(bcmsdh_driver_t *driver)
{
int error = 0;
drvinfo = *driver;
SDLX_MSG(("%s: register client driver\n", __FUNCTION__));
error = bcmsdh_register_client_driver();
if (error)
SDLX_MSG(("%s: failed %d\n", __FUNCTION__, error));
return error;
}
void
bcmsdh_unregister(void)
{
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0))
if (bcmsdh_pci_driver.node.next == NULL)
return;
#endif
bcmsdh_unregister_client_driver();
}
void bcmsdh_dev_pm_stay_awake(bcmsdh_info_t *bcmsdh)
{
#if !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
pm_stay_awake(bcmsdh_osinfo->dev);
#endif /* !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36)) */
}
void bcmsdh_dev_relax(bcmsdh_info_t *bcmsdh)
{
#if !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
pm_relax(bcmsdh_osinfo->dev);
#endif /* !defined(CONFIG_PM_WAKELOCKS) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36)) */
}
bool bcmsdh_dev_pm_enabled(bcmsdh_info_t *bcmsdh)
{
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
return bcmsdh_osinfo->dev_wake_enabled;
}
#if defined(OOB_INTR_ONLY)
void bcmsdh_oob_intr_set(bcmsdh_info_t *bcmsdh, bool enable)
{
unsigned long flags;
bcmsdh_os_info_t *bcmsdh_osinfo;
if (!bcmsdh)
return;
bcmsdh_osinfo = bcmsdh->os_cxt;
spin_lock_irqsave(&bcmsdh_osinfo->oob_irq_spinlock, flags);
if (bcmsdh_osinfo->oob_irq_enabled != enable) {
if (enable)
enable_irq(bcmsdh_osinfo->oob_irq_num);
else
disable_irq_nosync(bcmsdh_osinfo->oob_irq_num);
bcmsdh_osinfo->oob_irq_enabled = enable;
}
spin_unlock_irqrestore(&bcmsdh_osinfo->oob_irq_spinlock, flags);
}
static irqreturn_t wlan_oob_irq(int irq, void *dev_id)
{
bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *)dev_id;
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
bcmsdh_oob_intr_set(bcmsdh, FALSE);
bcmsdh_osinfo->oob_irq_handler(bcmsdh_osinfo->oob_irq_handler_context);
return IRQ_HANDLED;
}
int bcmsdh_oob_intr_register(bcmsdh_info_t *bcmsdh, bcmsdh_cb_fn_t oob_irq_handler,
void* oob_irq_handler_context)
{
int err = 0;
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
SDLX_MSG(("%s: Enter\n", __FUNCTION__));
if (bcmsdh_osinfo->oob_irq_registered) {
SDLX_MSG(("%s: irq is already registered\n", __FUNCTION__));
return -EBUSY;
}
SDLX_MSG(("%s OOB irq=%d flags=%X \n", __FUNCTION__,
(int)bcmsdh_osinfo->oob_irq_num, (int)bcmsdh_osinfo->oob_irq_flags));
bcmsdh_osinfo->oob_irq_handler = oob_irq_handler;
bcmsdh_osinfo->oob_irq_handler_context = oob_irq_handler_context;
#if defined(CONFIG_ARCH_ODIN)
err = odin_gpio_sms_request_irq(bcmsdh_osinfo->oob_irq_num, wlan_oob_irq,
bcmsdh_osinfo->oob_irq_flags, "bcmsdh_sdmmc", bcmsdh);
#else
err = request_irq(bcmsdh_osinfo->oob_irq_num, wlan_oob_irq,
bcmsdh_osinfo->oob_irq_flags, "bcmsdh_sdmmc", bcmsdh);
#endif /* defined(CONFIG_ARCH_ODIN) */
if (err) {
SDLX_MSG(("%s: request_irq failed with %d\n", __FUNCTION__, err));
return err;
}
err = enable_irq_wake(bcmsdh_osinfo->oob_irq_num);
if (!err)
bcmsdh_osinfo->oob_irq_wake_enabled = TRUE;
bcmsdh_osinfo->oob_irq_enabled = TRUE;
bcmsdh_osinfo->oob_irq_registered = TRUE;
return err;
}
void bcmsdh_oob_intr_unregister(bcmsdh_info_t *bcmsdh)
{
int err = 0;
bcmsdh_os_info_t *bcmsdh_osinfo = bcmsdh->os_cxt;
SDLX_MSG(("%s: Enter\n", __FUNCTION__));
if (!bcmsdh_osinfo->oob_irq_registered) {
SDLX_MSG(("%s: irq is not registered\n", __FUNCTION__));
return;
}
if (bcmsdh_osinfo->oob_irq_wake_enabled) {
err = disable_irq_wake(bcmsdh_osinfo->oob_irq_num);
if (!err)
bcmsdh_osinfo->oob_irq_wake_enabled = FALSE;
}
if (bcmsdh_osinfo->oob_irq_enabled) {
disable_irq(bcmsdh_osinfo->oob_irq_num);
bcmsdh_osinfo->oob_irq_enabled = FALSE;
}
free_irq(bcmsdh_osinfo->oob_irq_num, bcmsdh);
bcmsdh_osinfo->oob_irq_registered = FALSE;
}
#endif
/* Module parameters specific to each host-controller driver */
extern uint sd_msglevel; /* Debug message level */
module_param(sd_msglevel, uint, 0);
extern uint sd_power; /* 0 = SD Power OFF, 1 = SD Power ON. */
module_param(sd_power, uint, 0);
extern uint sd_clock; /* SD Clock Control, 0 = SD Clock OFF, 1 = SD Clock ON */
module_param(sd_clock, uint, 0);
extern uint sd_divisor; /* Divisor (-1 means external clock) */
module_param(sd_divisor, uint, 0);
extern uint sd_sdmode; /* Default is SD4, 0=SPI, 1=SD1, 2=SD4 */
module_param(sd_sdmode, uint, 0);
extern uint sd_hiok; /* Ok to use hi-speed mode */
module_param(sd_hiok, uint, 0);
extern uint sd_f2_blocksize;
module_param(sd_f2_blocksize, int, 0);
#ifdef BCMSDIOH_STD
extern int sd_uhsimode;
module_param(sd_uhsimode, int, 0);
extern uint sd_tuning_period;
module_param(sd_tuning_period, uint, 0);
extern int sd_delay_value;
module_param(sd_delay_value, uint, 0);
/* SDIO Drive Strength for UHSI mode specific to SDIO3.0 */
extern char dhd_sdiod_uhsi_ds_override[2];
module_param_string(dhd_sdiod_uhsi_ds_override, dhd_sdiod_uhsi_ds_override, 2, 0);
#endif
#ifdef BCMSDH_MODULE
EXPORT_SYMBOL(bcmsdh_attach);
EXPORT_SYMBOL(bcmsdh_detach);
EXPORT_SYMBOL(bcmsdh_intr_query);
EXPORT_SYMBOL(bcmsdh_intr_enable);
EXPORT_SYMBOL(bcmsdh_intr_disable);
EXPORT_SYMBOL(bcmsdh_intr_reg);
EXPORT_SYMBOL(bcmsdh_intr_dereg);
#if defined(DHD_DEBUG)
EXPORT_SYMBOL(bcmsdh_intr_pending);
#endif
EXPORT_SYMBOL(bcmsdh_devremove_reg);
EXPORT_SYMBOL(bcmsdh_cfg_read);
EXPORT_SYMBOL(bcmsdh_cfg_write);
EXPORT_SYMBOL(bcmsdh_cis_read);
EXPORT_SYMBOL(bcmsdh_reg_read);
EXPORT_SYMBOL(bcmsdh_reg_write);
EXPORT_SYMBOL(bcmsdh_regfail);
EXPORT_SYMBOL(bcmsdh_send_buf);
EXPORT_SYMBOL(bcmsdh_recv_buf);
EXPORT_SYMBOL(bcmsdh_rwdata);
EXPORT_SYMBOL(bcmsdh_abort);
EXPORT_SYMBOL(bcmsdh_query_device);
EXPORT_SYMBOL(bcmsdh_query_iofnum);
EXPORT_SYMBOL(bcmsdh_iovar_op);
EXPORT_SYMBOL(bcmsdh_register);
EXPORT_SYMBOL(bcmsdh_unregister);
EXPORT_SYMBOL(bcmsdh_chipmatch);
EXPORT_SYMBOL(bcmsdh_reset);
EXPORT_SYMBOL(bcmsdh_waitlockfree);
EXPORT_SYMBOL(bcmsdh_get_dstatus);
EXPORT_SYMBOL(bcmsdh_cfg_read_word);
EXPORT_SYMBOL(bcmsdh_cfg_write_word);
EXPORT_SYMBOL(bcmsdh_cur_sbwad);
EXPORT_SYMBOL(bcmsdh_chipinfo);
#endif /* BCMSDH_MODULE */
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