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/*
* BCM4710 specific pcmcia routines.
*
* Copyright 2004, Broadcom Corporation
* All Rights Reserved.
*
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
*
* $Id$
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/config.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/tqueue.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/version.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <pcmcia/version.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/ss.h>
#include <pcmcia/bulkmem.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/bus_ops.h>
#include "cs_internal.h"
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <typedefs.h>
#include <bcmdevs.h>
#include <bcm4710.h>
#include <sbconfig.h>
#include <sbextif.h>
#include "bcm4710pcmcia.h"
/* Use a static var for irq dev_id */
static int bcm47xx_pcmcia_dev_id;
/* Do we think we have a card or not? */
static int bcm47xx_pcmcia_present = 0;
static void bcm4710_pcmcia_reset(void)
{
extifregs_t *eir;
unsigned long s;
uint32 out0, out1, outen;
eir = (extifregs_t *) ioremap_nocache(BCM4710_REG_EXTIF, sizeof(extifregs_t));
save_and_cli(s);
/* Use gpio7 to reset the pcmcia slot */
outen = readl(&eir->gpio[0].outen);
outen |= BCM47XX_PCMCIA_RESET;
out0 = readl(&eir->gpio[0].out);
out0 &= ~(BCM47XX_PCMCIA_RESET);
out1 = out0 | BCM47XX_PCMCIA_RESET;
writel(out0, &eir->gpio[0].out);
writel(outen, &eir->gpio[0].outen);
mdelay(1);
writel(out1, &eir->gpio[0].out);
mdelay(1);
writel(out0, &eir->gpio[0].out);
restore_flags(s);
}
static int bcm4710_pcmcia_init(struct pcmcia_init *init)
{
struct pci_dev *pdev;
extifregs_t *eir;
uint32 outen, intp, intm, tmp;
uint16 *attrsp;
int rc = 0, i;
extern unsigned long bcm4710_cpu_cycle;
if (!(pdev = pci_find_device(VENDOR_BROADCOM, SB_EXTIF, NULL))) {
printk(KERN_ERR "bcm4710_pcmcia: extif not found\n");
return -ENODEV;
}
eir = (extifregs_t *) ioremap_nocache(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
/* Initialize the pcmcia i/f: 16bit no swap */
writel(CF_EM_PCMCIA | CF_DS | CF_EN, &eir->pcmcia_config);
#ifdef notYet
/* Set the timing for memory accesses */
tmp = (19 / bcm4710_cpu_cycle) << 24; /* W3 = 10nS */
tmp = tmp | ((29 / bcm4710_cpu_cycle) << 16); /* W2 = 20nS */
tmp = tmp | ((109 / bcm4710_cpu_cycle) << 8); /* W1 = 100nS */
tmp = tmp | (129 / bcm4710_cpu_cycle); /* W0 = 120nS */
writel(tmp, &eir->pcmcia_memwait); /* 0x01020a0c for a 100Mhz clock */
/* Set the timing for I/O accesses */
tmp = (19 / bcm4710_cpu_cycle) << 24; /* W3 = 10nS */
tmp = tmp | ((29 / bcm4710_cpu_cycle) << 16); /* W2 = 20nS */
tmp = tmp | ((109 / bcm4710_cpu_cycle) << 8); /* W1 = 100nS */
tmp = tmp | (129 / bcm4710_cpu_cycle); /* W0 = 120nS */
writel(tmp, &eir->pcmcia_iowait); /* 0x01020a0c for a 100Mhz clock */
/* Set the timing for attribute accesses */
tmp = (19 / bcm4710_cpu_cycle) << 24; /* W3 = 10nS */
tmp = tmp | ((29 / bcm4710_cpu_cycle) << 16); /* W2 = 20nS */
tmp = tmp | ((109 / bcm4710_cpu_cycle) << 8); /* W1 = 100nS */
tmp = tmp | (129 / bcm4710_cpu_cycle); /* W0 = 120nS */
writel(tmp, &eir->pcmcia_attrwait); /* 0x01020a0c for a 100Mhz clock */
#endif
/* Make sure gpio0 and gpio5 are inputs */
outen = readl(&eir->gpio[0].outen);
outen &= ~(BCM47XX_PCMCIA_WP | BCM47XX_PCMCIA_STSCHG | BCM47XX_PCMCIA_RESET);
writel(outen, &eir->gpio[0].outen);
/* Issue a reset to the pcmcia socket */
bcm4710_pcmcia_reset();
#ifdef DO_BCM47XX_PCMCIA_INTERRUPTS
/* Setup gpio5 to be the STSCHG interrupt */
intp = readl(&eir->gpiointpolarity);
writel(intp | BCM47XX_PCMCIA_STSCHG, &eir->gpiointpolarity); /* Active low */
intm = readl(&eir->gpiointmask);
writel(intm | BCM47XX_PCMCIA_STSCHG, &eir->gpiointmask); /* Enable it */
#endif
DEBUG(2, "bcm4710_pcmcia after reset:\n");
DEBUG(2, "\textstatus\t= 0x%08x:\n", readl(&eir->extstatus));
DEBUG(2, "\tpcmcia_config\t= 0x%08x:\n", readl(&eir->pcmcia_config));
DEBUG(2, "\tpcmcia_memwait\t= 0x%08x:\n", readl(&eir->pcmcia_memwait));
DEBUG(2, "\tpcmcia_attrwait\t= 0x%08x:\n", readl(&eir->pcmcia_attrwait));
DEBUG(2, "\tpcmcia_iowait\t= 0x%08x:\n", readl(&eir->pcmcia_iowait));
DEBUG(2, "\tgpioin\t\t= 0x%08x:\n", readl(&eir->gpioin));
DEBUG(2, "\tgpio_outen0\t= 0x%08x:\n", readl(&eir->gpio[0].outen));
DEBUG(2, "\tgpio_out0\t= 0x%08x:\n", readl(&eir->gpio[0].out));
DEBUG(2, "\tgpiointpolarity\t= 0x%08x:\n", readl(&eir->gpiointpolarity));
DEBUG(2, "\tgpiointmask\t= 0x%08x:\n", readl(&eir->gpiointmask));
#ifdef DO_BCM47XX_PCMCIA_INTERRUPTS
/* Request pcmcia interrupt */
rc = request_irq(BCM47XX_PCMCIA_IRQ, init->handler, SA_INTERRUPT,
"PCMCIA Interrupt", &bcm47xx_pcmcia_dev_id);
#endif
attrsp = (uint16 *)ioremap_nocache(EXTIF_PCMCIA_CFGBASE(BCM4710_EXTIF), 0x1000);
tmp = readw(&attrsp[0]);
DEBUG(2, "\tattr[0] = 0x%04x\n", tmp);
if ((tmp == 0x7fff) || (tmp == 0x7f00)) {
bcm47xx_pcmcia_present = 0;
} else {
bcm47xx_pcmcia_present = 1;
}
/* There's only one socket */
return 1;
}
static int bcm4710_pcmcia_shutdown(void)
{
extifregs_t *eir;
uint32 intm;
eir = (extifregs_t *) ioremap_nocache(BCM4710_REG_EXTIF, sizeof(extifregs_t));
/* Disable the pcmcia i/f */
writel(0, &eir->pcmcia_config);
/* Reset gpio's */
intm = readl(&eir->gpiointmask);
writel(intm & ~BCM47XX_PCMCIA_STSCHG, &eir->gpiointmask); /* Disable it */
free_irq(BCM47XX_PCMCIA_IRQ, &bcm47xx_pcmcia_dev_id);
return 0;
}
static int
bcm4710_pcmcia_socket_state(unsigned sock, struct pcmcia_state *state)
{
extifregs_t *eir;
eir = (extifregs_t *) ioremap_nocache(BCM4710_REG_EXTIF, sizeof(extifregs_t));
if (sock != 0) {
printk(KERN_ERR "bcm4710 socket_state bad sock %d\n", sock);
return -1;
}
if (bcm47xx_pcmcia_present) {
state->detect = 1;
state->ready = 1;
state->bvd1 = 1;
state->bvd2 = 1;
state->wrprot = (readl(&eir->gpioin) & BCM47XX_PCMCIA_WP) == BCM47XX_PCMCIA_WP;
state->vs_3v = 0;
state->vs_Xv = 0;
} else {
state->detect = 0;
state->ready = 0;
}
return 1;
}
static int bcm4710_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
{
if (info->sock >= BCM47XX_PCMCIA_MAX_SOCK) return -1;
info->irq = BCM47XX_PCMCIA_IRQ;
return 0;
}
static int
bcm4710_pcmcia_configure_socket(const struct pcmcia_configure *configure)
{
if (configure->sock >= BCM47XX_PCMCIA_MAX_SOCK) return -1;
DEBUG(2, "Vcc %dV Vpp %dV output %d speaker %d reset %d\n", configure->vcc,
configure->vpp, configure->output, configure->speaker, configure->reset);
if ((configure->vcc != 50) || (configure->vpp != 50)) {
printk("%s: bad Vcc/Vpp (%d:%d)\n", __FUNCTION__, configure->vcc,
configure->vpp);
}
if (configure->reset) {
/* Issue a reset to the pcmcia socket */
DEBUG(1, "%s: Reseting socket\n", __FUNCTION__);
bcm4710_pcmcia_reset();
}
return 0;
}
struct pcmcia_low_level bcm4710_pcmcia_ops = {
bcm4710_pcmcia_init,
bcm4710_pcmcia_shutdown,
bcm4710_pcmcia_socket_state,
bcm4710_pcmcia_get_irq_info,
bcm4710_pcmcia_configure_socket
};
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