diff options
Diffstat (limited to 'drivers/pcmcia/vrc4173_cardu.c')
| -rw-r--r-- | drivers/pcmcia/vrc4173_cardu.c | 617 |
1 files changed, 617 insertions, 0 deletions
diff --git a/drivers/pcmcia/vrc4173_cardu.c b/drivers/pcmcia/vrc4173_cardu.c new file mode 100644 index 00000000000..db91259dc50 --- /dev/null +++ b/drivers/pcmcia/vrc4173_cardu.c @@ -0,0 +1,617 @@ +/* + * 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); |