/drivers/pcmcia/vrc4173_cardu.c
C | 617 lines | 459 code | 126 blank | 32 comment | 102 complexity | 0cc6ea5a007660da33832b2803b0adc6 MD5 | raw file
Possible License(s): CC-BY-SA-3.0, GPL-2.0, LGPL-2.0
- /*
- * FILE NAME
- * drivers/pcmcia/vrc4173_cardu.c
- *
- * BRIEF MODULE DESCRIPTION
- * NEC VRC4173 CARDU driver for Socket Services
- * (This device doesn't support CardBus. it is supporting only 16bit PC Card.)
- *
- * Copyright 2002,2003 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
- * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/pci.h>
- #include <linux/spinlock.h>
- #include <linux/types.h>
- #include <asm/io.h>
- #include <pcmcia/ss.h>
- #include "vrc4173_cardu.h"
- MODULE_DESCRIPTION("NEC VRC4173 CARDU driver for Socket Services");
- MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>");
- MODULE_LICENSE("GPL");
- static int vrc4173_cardu_slots;
- static vrc4173_socket_t cardu_sockets[CARDU_MAX_SOCKETS];
- extern struct socket_info_t *pcmcia_register_socket (int slot,
- struct pccard_operations *vtable,
- int use_bus_pm);
- extern void pcmcia_unregister_socket(struct socket_info_t *s);
- static inline uint8_t exca_readb(vrc4173_socket_t *socket, uint16_t offset)
- {
- return readb(socket->base + EXCA_REGS_BASE + offset);
- }
- static inline uint16_t exca_readw(vrc4173_socket_t *socket, uint16_t offset)
- {
- uint16_t val;
- val = readb(socket->base + EXCA_REGS_BASE + offset);
- val |= (u16)readb(socket->base + EXCA_REGS_BASE + offset + 1) << 8;
- return val;
- }
- static inline void exca_writeb(vrc4173_socket_t *socket, uint16_t offset, uint8_t val)
- {
- writeb(val, socket->base + EXCA_REGS_BASE + offset);
- }
- static inline void exca_writew(vrc4173_socket_t *socket, uint8_t offset, uint16_t val)
- {
- writeb((u8)val, socket->base + EXCA_REGS_BASE + offset);
- writeb((u8)(val >> 8), socket->base + EXCA_REGS_BASE + offset + 1);
- }
- static inline uint32_t cardbus_socket_readl(vrc4173_socket_t *socket, u16 offset)
- {
- return readl(socket->base + CARDBUS_SOCKET_REGS_BASE + offset);
- }
- static inline void cardbus_socket_writel(vrc4173_socket_t *socket, u16 offset, uint32_t val)
- {
- writel(val, socket->base + CARDBUS_SOCKET_REGS_BASE + offset);
- }
- static void cardu_pciregs_init(struct pci_dev *dev)
- {
- u32 syscnt;
- u16 brgcnt;
- u8 devcnt;
- pci_write_config_dword(dev, 0x1c, 0x10000000);
- pci_write_config_dword(dev, 0x20, 0x17fff000);
- pci_write_config_dword(dev, 0x2c, 0);
- pci_write_config_dword(dev, 0x30, 0xfffc);
- pci_read_config_word(dev, BRGCNT, &brgcnt);
- brgcnt &= ~IREQ_INT;
- pci_write_config_word(dev, BRGCNT, brgcnt);
- pci_read_config_dword(dev, SYSCNT, &syscnt);
- syscnt &= ~(BAD_VCC_REQ_DISB|PCPCI_EN|CH_ASSIGN_MASK|SUB_ID_WR_EN|PCI_CLK_RIN);
- syscnt |= (CH_ASSIGN_NODMA|ASYN_INT_MODE);
- pci_write_config_dword(dev, SYSCNT, syscnt);
- pci_read_config_byte(dev, DEVCNT, &devcnt);
- devcnt &= ~(ZOOM_VIDEO_EN|SR_PCI_INT_SEL_MASK|PCI_INT_MODE|IRQ_MODE);
- devcnt |= (SR_PCI_INT_SEL_NONE|IFG);
- pci_write_config_byte(dev, DEVCNT, devcnt);
- pci_write_config_byte(dev, CHIPCNT, S_PREF_DISB);
- pci_write_config_byte(dev, SERRDIS, 0);
- }
- static int cardu_init(unsigned int slot)
- {
- vrc4173_socket_t *socket = &cardu_sockets[slot];
- cardu_pciregs_init(socket->dev);
- /* CARD_SC bits are cleared by reading CARD_SC. */
- exca_writeb(socket, GLO_CNT, 0);
- socket->cap.features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
- socket->cap.irq_mask = 0;
- socket->cap.map_size = 0x1000;
- socket->cap.pci_irq = socket->dev->irq;
- socket->events = 0;
- spin_lock_init(socket->event_lock);
- /* Enable PC Card status interrupts */
- exca_writeb(socket, CARD_SCI, CARD_DT_EN|RDY_EN|BAT_WAR_EN|BAT_DEAD_EN);
- return 0;
- }
- static int cardu_register_callback(unsigned int sock,
- void (*handler)(void *, unsigned int),
- void * info)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- socket->handler = handler;
- socket->info = info;
- return 0;
- }
- static int cardu_inquire_socket(unsigned int sock, socket_cap_t *cap)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- *cap = socket->cap;
- return 0;
- }
- static int cardu_get_status(unsigned int sock, u_int *value)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- uint32_t state;
- uint8_t status;
- u_int val = 0;
- status = exca_readb(socket, IF_STATUS);
- if (status & CARD_PWR) val |= SS_POWERON;
- if (status & READY) val |= SS_READY;
- if (status & CARD_WP) val |= SS_WRPROT;
- if ((status & (CARD_DETECT1|CARD_DETECT2)) == (CARD_DETECT1|CARD_DETECT2))
- val |= SS_DETECT;
- if (exca_readb(socket, INT_GEN_CNT) & CARD_TYPE_IO) {
- if (status & STSCHG) val |= SS_STSCHG;
- } else {
- status &= BV_DETECT_MASK;
- if (status != BV_DETECT_GOOD) {
- if (status == BV_DETECT_WARN) val |= SS_BATWARN;
- else val |= SS_BATDEAD;
- }
- }
- state = cardbus_socket_readl(socket, SKT_PRE_STATE);
- if (state & VOL_3V_CARD_DT) val |= SS_3VCARD;
- if (state & VOL_XV_CARD_DT) val |= SS_XVCARD;
- if (state & CB_CARD_DT) val |= SS_CARDBUS;
- if (!(state &
- (VOL_YV_CARD_DT|VOL_XV_CARD_DT|VOL_3V_CARD_DT|VOL_5V_CARD_DT|CCD20|CCD10)))
- val |= SS_PENDING;
- *value = val;
- return 0;
- }
- static inline u_char get_Vcc_value(uint8_t val)
- {
- switch (val & VCC_MASK) {
- case VCC_3V:
- return 33;
- case VCC_5V:
- return 50;
- }
- return 0;
- }
- static inline u_char get_Vpp_value(uint8_t val)
- {
- switch (val & VPP_MASK) {
- case VPP_12V:
- return 120;
- case VPP_VCC:
- return get_Vcc_value(val);
- }
- return 0;
- }
- static int cardu_get_socket(unsigned int sock, socket_state_t *state)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- uint8_t val;
- val = exca_readb(socket, PWR_CNT);
- state->Vcc = get_Vcc_value(val);
- state->Vpp = get_Vpp_value(val);
- state->flags = 0;
- if (val & CARD_OUT_EN) state->flags |= SS_OUTPUT_ENA;
- val = exca_readb(socket, INT_GEN_CNT);
- if (!(val & CARD_REST0)) state->flags |= SS_RESET;
- if (val & CARD_TYPE_IO) state->flags |= SS_IOCARD;
- return 0;
- }
- static inline uint8_t set_Vcc_value(u_char Vcc)
- {
- switch (Vcc) {
- case 33:
- return VCC_3V;
- case 50:
- return VCC_5V;
- }
- return VCC_0V;
- }
- static inline uint8_t set_Vpp_value(u_char Vpp)
- {
- switch (Vpp) {
- case 33:
- case 50:
- return VPP_VCC;
- case 120:
- return VPP_12V;
- }
- return VPP_0V;
- }
- static int cardu_set_socket(unsigned int sock, socket_state_t *state)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- uint8_t val;
- if (((state->Vpp == 33) || (state->Vpp == 50)) && (state->Vpp != state->Vcc))
- return -EINVAL;
- val = set_Vcc_value(state->Vcc);
- val |= set_Vpp_value(state->Vpp);
- if (state->flags & SS_OUTPUT_ENA) val |= CARD_OUT_EN;
- exca_writeb(socket, PWR_CNT, val);
- val = exca_readb(socket, INT_GEN_CNT) & CARD_REST0;
- if (state->flags & SS_RESET) val &= ~CARD_REST0;
- else val |= CARD_REST0;
- if (state->flags & SS_IOCARD) val |= CARD_TYPE_IO;
- exca_writeb(socket, INT_GEN_CNT, val);
- return 0;
- }
- static int cardu_get_io_map(unsigned int sock, struct pccard_io_map *io)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- uint8_t ioctl, window;
- u_char map;
- map = io->map;
- if (map > 1)
- return -EINVAL;
- io->start = exca_readw(socket, IO_WIN_SA(map));
- io->stop = exca_readw(socket, IO_WIN_EA(map));
- ioctl = exca_readb(socket, IO_WIN_CNT);
- window = exca_readb(socket, ADR_WIN_EN);
- io->flags = (window & IO_WIN_EN(map)) ? MAP_ACTIVE : 0;
- if (ioctl & IO_WIN_DATA_AUTOSZ(map))
- io->flags |= MAP_AUTOSZ;
- else if (ioctl & IO_WIN_DATA_16BIT(map))
- io->flags |= MAP_16BIT;
- return 0;
- }
- static int cardu_set_io_map(unsigned int sock, struct pccard_io_map *io)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- uint16_t ioctl;
- uint8_t window, enable;
- u_char map;
- map = io->map;
- if (map > 1)
- return -EINVAL;
- window = exca_readb(socket, ADR_WIN_EN);
- enable = IO_WIN_EN(map);
- if (window & enable) {
- window &= ~enable;
- exca_writeb(socket, ADR_WIN_EN, window);
- }
- exca_writew(socket, IO_WIN_SA(map), io->start);
- exca_writew(socket, IO_WIN_EA(map), io->stop);
- ioctl = exca_readb(socket, IO_WIN_CNT) & ~IO_WIN_CNT_MASK(map);
- if (io->flags & MAP_AUTOSZ) ioctl |= IO_WIN_DATA_AUTOSZ(map);
- else if (io->flags & MAP_16BIT) ioctl |= IO_WIN_DATA_16BIT(map);
- exca_writeb(socket, IO_WIN_CNT, ioctl);
- if (io->flags & MAP_ACTIVE)
- exca_writeb(socket, ADR_WIN_EN, window | enable);
- return 0;
- }
- static int cardu_get_mem_map(unsigned int sock, struct pccard_mem_map *mem)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- uint32_t start, stop, offset, page;
- uint8_t window;
- u_char map;
- map = mem->map;
- if (map > 4)
- return -EINVAL;
- window = exca_readb(socket, ADR_WIN_EN);
- mem->flags = (window & MEM_WIN_EN(map)) ? MAP_ACTIVE : 0;
- start = exca_readw(socket, MEM_WIN_SA(map));
- mem->flags |= (start & MEM_WIN_DSIZE) ? MAP_16BIT : 0;
- start = (start & 0x0fff) << 12;
- stop = exca_readw(socket, MEM_WIN_EA(map));
- stop = ((stop & 0x0fff) << 12) + 0x0fff;
- offset = exca_readw(socket, MEM_WIN_OA(map));
- mem->flags |= (offset & MEM_WIN_WP) ? MAP_WRPROT : 0;
- mem->flags |= (offset & MEM_WIN_REGSET) ? MAP_ATTRIB : 0;
- offset = ((offset & 0x3fff) << 12) + start;
- mem->card_start = offset & 0x03ffffff;
- page = exca_readb(socket, MEM_WIN_SAU(map)) << 24;
- mem->sys_start = start + page;
- mem->sys_stop = start + page;
- return 0;
- }
- static int cardu_set_mem_map(unsigned int sock, struct pccard_mem_map *mem)
- {
- vrc4173_socket_t *socket = &cardu_sockets[sock];
- uint16_t value;
- uint8_t window, enable;
- u_long sys_start, sys_stop, card_start;
- u_char map;
- map = mem->map;
- sys_start = mem->sys_start;
- sys_stop = mem->sys_stop;
- card_start = mem->card_start;
- if (map > 4 || sys_start > sys_stop || ((sys_start ^ sys_stop) >> 24) ||
- (card_start >> 26))
- return -EINVAL;
- window = exca_readb(socket, ADR_WIN_EN);
- enable = MEM_WIN_EN(map);
- if (window & enable) {
- window &= ~enable;
- exca_writeb(socket, ADR_WIN_EN, window);
- }
- exca_writeb(socket, MEM_WIN_SAU(map), sys_start >> 24);
- value = (sys_start >> 12) & 0x0fff;
- if (mem->flags & MAP_16BIT) value |= MEM_WIN_DSIZE;
- exca_writew(socket, MEM_WIN_SA(map), value);
- value = (sys_stop >> 12) & 0x0fff;
- exca_writew(socket, MEM_WIN_EA(map), value);
- value = ((card_start - sys_start) >> 12) & 0x3fff;
- if (mem->flags & MAP_WRPROT) value |= MEM_WIN_WP;
- if (mem->flags & MAP_ATTRIB) value |= MEM_WIN_REGSET;
- exca_writew(socket, MEM_WIN_OA(map), value);
- if (mem->flags & MAP_ACTIVE)
- exca_writeb(socket, ADR_WIN_EN, window | enable);
- return 0;
- }
- static void cardu_proc_setup(unsigned int sock, struct proc_dir_entry *base)
- {
- }
- static struct pccard_operations cardu_operations = {
- .init = cardu_init,
- .register_callback = cardu_register_callback,
- .inquire_socket = cardu_inquire_socket,
- .get_status = cardu_get_status,
- .get_socket = cardu_get_socket,
- .set_socket = cardu_set_socket,
- .get_io_map = cardu_get_io_map,
- .set_io_map = cardu_set_io_map,
- .get_mem_map = cardu_get_mem_map,
- .set_mem_map = cardu_set_mem_map,
- .proc_setup = cardu_proc_setup,
- };
- static void cardu_bh(void *data)
- {
- vrc4173_socket_t *socket = (vrc4173_socket_t *)data;
- uint16_t events;
- spin_lock_irq(&socket->event_lock);
- events = socket->events;
- socket->events = 0;
- spin_unlock_irq(&socket->event_lock);
- if (socket->handler)
- socket->handler(socket->info, events);
- }
- static uint16_t get_events(vrc4173_socket_t *socket)
- {
- uint16_t events = 0;
- uint8_t csc, status;
- status = exca_readb(socket, IF_STATUS);
- csc = exca_readb(socket, CARD_SC);
- if ((csc & CARD_DT_CHG) &&
- ((status & (CARD_DETECT1|CARD_DETECT2)) == (CARD_DETECT1|CARD_DETECT2)))
- events |= SS_DETECT;
- if ((csc & RDY_CHG) && (status & READY))
- events |= SS_READY;
- if (exca_readb(socket, INT_GEN_CNT) & CARD_TYPE_IO) {
- if ((csc & BAT_DEAD_ST_CHG) && (status & STSCHG))
- events |= SS_STSCHG;
- } else {
- if (csc & (BAT_WAR_CHG|BAT_DEAD_ST_CHG)) {
- if ((status & BV_DETECT_MASK) != BV_DETECT_GOOD) {
- if (status == BV_DETECT_WARN) events |= SS_BATWARN;
- else events |= SS_BATDEAD;
- }
- }
- }
- return events;
- }
- static void cardu_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- vrc4173_socket_t *socket = (vrc4173_socket_t *)dev_id;
- uint16_t events;
- INIT_WORK(&socket->tq_work, cardu_bh, socket);
- events = get_events(socket);
- if (events) {
- spin_lock(&socket->event_lock);
- socket->events |= events;
- spin_unlock(&socket->event_lock);
- schedule_work(&socket->tq_work);
- }
- }
- static int __devinit vrc4173_cardu_probe(struct pci_dev *dev,
- const struct pci_device_id *ent)
- {
- vrc4173_socket_t *socket;
- unsigned long start, len, flags;
- int slot, err;
- slot = vrc4173_cardu_slots++;
- socket = &cardu_sockets[slot];
- if (socket->noprobe != 0)
- return -EBUSY;
- sprintf(socket->name, "NEC VRC4173 CARDU%1d", slot+1);
- if ((err = pci_enable_device(dev)) < 0)
- return err;
- start = pci_resource_start(dev, 0);
- if (start == 0)
- return -ENODEV;
- len = pci_resource_len(dev, 0);
- if (len == 0)
- return -ENODEV;
- if (((flags = pci_resource_flags(dev, 0)) & IORESOURCE_MEM) == 0)
- return -EBUSY;
- if ((err = pci_request_regions(dev, socket->name)) < 0)
- return err;
- socket->base = ioremap(start, len);
- if (socket->base == NULL)
- return -ENODEV;
- socket->dev = dev;
- socket->pcmcia_socket = pcmcia_register_socket(slot, &cardu_operations, 1);
- if (socket->pcmcia_socket == NULL) {
- iounmap(socket->base);
- socket->base = NULL;
- return -ENOMEM;
- }
- if (request_irq(dev->irq, cardu_interrupt, SA_SHIRQ, socket->name, socket) < 0) {
- pcmcia_unregister_socket(socket->pcmcia_socket);
- socket->pcmcia_socket = NULL;
- iounmap(socket->base);
- socket->base = NULL;
- return -EBUSY;
- }
- printk(KERN_INFO "%s at %#08lx, IRQ %d\n", socket->name, start, dev->irq);
- return 0;
- }
- static int __devinit vrc4173_cardu_setup(char *options)
- {
- if (options == NULL || *options == '\0')
- return 0;
- if (strncmp(options, "cardu1:", 7) == 0) {
- options += 7;
- if (*options != '\0') {
- if (strncmp(options, "noprobe", 7) == 0) {
- cardu_sockets[CARDU1].noprobe = 1;
- options += 7;
- }
- if (*options != ',')
- return 0;
- } else
- return 0;
- }
- if (strncmp(options, "cardu2:", 7) == 0) {
- options += 7;
- if ((*options != '\0') && (strncmp(options, "noprobe", 7) == 0))
- cardu_sockets[CARDU2].noprobe = 1;
- }
- return 0;
- }
- __setup("vrc4173_cardu=", vrc4173_cardu_setup);
- static struct pci_device_id vrc4173_cardu_id_table[] __devinitdata = {
- { .vendor = PCI_VENDOR_ID_NEC,
- .device = PCI_DEVICE_ID_NEC_NAPCCARD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID, },
- {0, }
- };
- static struct pci_driver vrc4173_cardu_driver = {
- .name = "NEC VRC4173 CARDU",
- .probe = vrc4173_cardu_probe,
- .id_table = vrc4173_cardu_id_table,
- };
- static int __devinit vrc4173_cardu_init(void)
- {
- vrc4173_cardu_slots = 0;
- return pci_module_init(&vrc4173_cardu_driver);
- }
- static void __devexit vrc4173_cardu_exit(void)
- {
- pci_unregister_driver(&vrc4173_cardu_driver);
- }
- module_init(vrc4173_cardu_init);
- module_exit(vrc4173_cardu_exit);
- MODULE_DEVICE_TABLE(pci, vrc4173_cardu_id_table);