/* * 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@linux-mips.org> * * 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@linux-mips.org>"); 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 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, .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) { 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 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, ret; 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) { ret = -ENODEV; goto disable; } len = pci_resource_len(dev, 0); if (len == 0) { ret = -ENODEV; goto disable; } flags = pci_resource_flags(dev, 0); if ((flags & IORESOURCE_MEM) == 0) { ret = -EBUSY; goto disable; } err = pci_request_regions(dev, socket->name); if (err < 0) { ret = err; goto disable; } socket->base = ioremap(start, len); if (socket->base == NULL) { ret = -ENODEV; goto release; } socket->dev = dev; socket->pcmcia_socket = pcmcia_register_socket(slot, &cardu_operations, 1); if (socket->pcmcia_socket == NULL) { ret = -ENOMEM; goto unmap; } if (request_irq(dev->irq, cardu_interrupt, IRQF_SHARED, socket->name, socket) < 0) { ret = -EBUSY; goto unregister; } printk(KERN_INFO "%s at %#08lx, IRQ %d\n", socket->name, start, dev->irq); return 0; unregister: pcmcia_unregister_socket(socket->pcmcia_socket); socket->pcmcia_socket = NULL; unmap: iounmap(socket->base); socket->base = NULL; release: pci_release_regions(dev); disable: pci_disable_device(dev); return ret; } static int vrc4173_cardu_setup(char *options) { if (options == NULL || *options == '\0') return 1; 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 1; } else return 1; } if (strncmp(options, "cardu2:", 7) == 0) { options += 7; if ((*options != '\0') && (strncmp(options, "noprobe", 7) == 0)) cardu_sockets[CARDU2].noprobe = 1; } return 1; } __setup("vrc4173_cardu=", vrc4173_cardu_setup); static const struct pci_device_id vrc4173_cardu_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_NAPCCARD) }, {0, } }; static struct pci_driver vrc4173_cardu_driver = { .name = "NEC VRC4173 CARDU", .probe = vrc4173_cardu_probe, .id_table = vrc4173_cardu_id_table, }; static int vrc4173_cardu_init(void) { vrc4173_cardu_slots = 0; return pci_register_driver(&vrc4173_cardu_driver); } static void 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);