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Diffstat (limited to 'package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c')
-rw-r--r--package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c266
1 files changed, 266 insertions, 0 deletions
diff --git a/package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c b/package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c
new file mode 100644
index 000000000..6e3da040c
--- /dev/null
+++ b/package/linux/kernel-source/drivers/pcmcia/bcm4710_pcmcia.c
@@ -0,0 +1,266 @@
+/*
+ * 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
+};
+