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0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * vrc4171_card.c, NEC VRC4171 Card Controller driver for Socket Services.
0004  *
0005  * Copyright (C) 2003-2005  Yoichi Yuasa <yuasa@linux-mips.org>
0006  */
0007 #include <linux/init.h>
0008 #include <linux/ioport.h>
0009 #include <linux/interrupt.h>
0010 #include <linux/module.h>
0011 #include <linux/spinlock.h>
0012 #include <linux/types.h>
0013 #include <linux/platform_device.h>
0014 
0015 #include <asm/io.h>
0016 
0017 #include <pcmcia/ss.h>
0018 
0019 #include "i82365.h"
0020 
0021 MODULE_DESCRIPTION("NEC VRC4171 Card Controllers driver for Socket Services");
0022 MODULE_AUTHOR("Yoichi Yuasa <yuasa@linux-mips.org>");
0023 MODULE_LICENSE("GPL");
0024 
0025 #define CARD_MAX_SLOTS      2
0026 #define CARD_SLOTA      0
0027 #define CARD_SLOTB      1
0028 #define CARD_SLOTB_OFFSET   0x40
0029 
0030 #define CARD_MEM_START      0x10000000
0031 #define CARD_MEM_END        0x13ffffff
0032 #define CARD_MAX_MEM_OFFSET 0x3ffffff
0033 #define CARD_MAX_MEM_SPEED  1000
0034 
0035 #define CARD_CONTROLLER_INDEX   0x03e0
0036 #define CARD_CONTROLLER_DATA    0x03e1
0037  /* Power register */
0038   #define VPP_GET_VCC       0x01
0039   #define POWER_ENABLE      0x10
0040  #define CARD_VOLTAGE_SENSE 0x1f
0041   #define VCC_3VORXV_CAPABLE    0x00
0042   #define VCC_XV_ONLY       0x01
0043   #define VCC_3V_CAPABLE    0x02
0044   #define VCC_5V_ONLY       0x03
0045  #define CARD_VOLTAGE_SELECT    0x2f
0046   #define VCC_3V        0x01
0047   #define VCC_5V        0x00
0048   #define VCC_XV        0x02
0049   #define VCC_STATUS_3V     0x02
0050   #define VCC_STATUS_5V     0x01
0051   #define VCC_STATUS_XV     0x03
0052  #define GLOBAL_CONTROL     0x1e
0053   #define EXWRBK        0x04
0054   #define IRQPM_EN      0x08
0055   #define CLRPMIRQ      0x10
0056 
0057 #define INTERRUPT_STATUS    0x05fa
0058  #define IRQ_A          0x02
0059  #define IRQ_B          0x04
0060 
0061 #define CONFIGURATION1      0x05fe
0062  #define SLOTB_CONFIG       0xc000
0063  #define SLOTB_NONE     0x0000
0064  #define SLOTB_PCCARD       0x4000
0065  #define SLOTB_CF       0x8000
0066  #define SLOTB_FLASHROM     0xc000
0067 
0068 #define CARD_CONTROLLER_START   CARD_CONTROLLER_INDEX
0069 #define CARD_CONTROLLER_END CARD_CONTROLLER_DATA
0070 
0071 #define IO_MAX_MAPS 2
0072 #define MEM_MAX_MAPS    5
0073 
0074 enum vrc4171_slot {
0075     SLOT_PROBE = 0,
0076     SLOT_NOPROBE_IO,
0077     SLOT_NOPROBE_MEM,
0078     SLOT_NOPROBE_ALL,
0079     SLOT_INITIALIZED,
0080 };
0081 
0082 enum vrc4171_slotb {
0083     SLOTB_IS_NONE,
0084     SLOTB_IS_PCCARD,
0085     SLOTB_IS_CF,
0086     SLOTB_IS_FLASHROM,
0087 };
0088 
0089 struct vrc4171_socket {
0090     enum vrc4171_slot slot;
0091     struct pcmcia_socket pcmcia_socket;
0092     char name[24];
0093     int csc_irq;
0094     int io_irq;
0095     spinlock_t lock;
0096 };
0097 
0098 static struct vrc4171_socket vrc4171_sockets[CARD_MAX_SLOTS];
0099 static enum vrc4171_slotb vrc4171_slotb = SLOTB_IS_NONE;
0100 static char vrc4171_card_name[] = "NEC VRC4171 Card Controller";
0101 static unsigned int vrc4171_irq;
0102 static uint16_t vrc4171_irq_mask = 0xdeb8;
0103 
0104 static struct resource vrc4171_card_resource[3] = {
0105     {   .name       = vrc4171_card_name,
0106         .start      = CARD_CONTROLLER_START,
0107         .end        = CARD_CONTROLLER_END,
0108         .flags      = IORESOURCE_IO,    },
0109     {   .name       = vrc4171_card_name,
0110         .start      = INTERRUPT_STATUS,
0111         .end        = INTERRUPT_STATUS,
0112         .flags      = IORESOURCE_IO,    },
0113     {   .name       = vrc4171_card_name,
0114         .start      = CONFIGURATION1,
0115         .end        = CONFIGURATION1,
0116         .flags      = IORESOURCE_IO,    },
0117 };
0118 
0119 static struct platform_device vrc4171_card_device = {
0120     .name       = vrc4171_card_name,
0121     .id     = 0,
0122     .num_resources  = 3,
0123     .resource   = vrc4171_card_resource,
0124 };
0125 
0126 static inline uint16_t vrc4171_get_irq_status(void)
0127 {
0128     return inw(INTERRUPT_STATUS);
0129 }
0130 
0131 static inline void vrc4171_set_multifunction_pin(enum vrc4171_slotb config)
0132 {
0133     uint16_t config1;
0134 
0135     config1 = inw(CONFIGURATION1);
0136     config1 &= ~SLOTB_CONFIG;
0137 
0138     switch (config) {
0139     case SLOTB_IS_NONE:
0140         config1 |= SLOTB_NONE;
0141         break;
0142     case SLOTB_IS_PCCARD:
0143         config1 |= SLOTB_PCCARD;
0144         break;
0145     case SLOTB_IS_CF:
0146         config1 |= SLOTB_CF;
0147         break;
0148     case SLOTB_IS_FLASHROM:
0149         config1 |= SLOTB_FLASHROM;
0150         break;
0151     default:
0152         break;
0153     }
0154 
0155     outw(config1, CONFIGURATION1);
0156 }
0157 
0158 static inline uint8_t exca_read_byte(int slot, uint8_t index)
0159 {
0160     if (slot == CARD_SLOTB)
0161         index += CARD_SLOTB_OFFSET;
0162 
0163     outb(index, CARD_CONTROLLER_INDEX);
0164     return inb(CARD_CONTROLLER_DATA);
0165 }
0166 
0167 static inline uint16_t exca_read_word(int slot, uint8_t index)
0168 {
0169     uint16_t data;
0170 
0171     if (slot == CARD_SLOTB)
0172         index += CARD_SLOTB_OFFSET;
0173 
0174     outb(index++, CARD_CONTROLLER_INDEX);
0175     data = inb(CARD_CONTROLLER_DATA);
0176 
0177     outb(index, CARD_CONTROLLER_INDEX);
0178     data |= ((uint16_t)inb(CARD_CONTROLLER_DATA)) << 8;
0179 
0180     return data;
0181 }
0182 
0183 static inline uint8_t exca_write_byte(int slot, uint8_t index, uint8_t data)
0184 {
0185     if (slot == CARD_SLOTB)
0186         index += CARD_SLOTB_OFFSET;
0187 
0188     outb(index, CARD_CONTROLLER_INDEX);
0189     outb(data, CARD_CONTROLLER_DATA);
0190 
0191     return data;
0192 }
0193 
0194 static inline uint16_t exca_write_word(int slot, uint8_t index, uint16_t data)
0195 {
0196     if (slot == CARD_SLOTB)
0197         index += CARD_SLOTB_OFFSET;
0198 
0199     outb(index++, CARD_CONTROLLER_INDEX);
0200     outb(data, CARD_CONTROLLER_DATA);
0201 
0202     outb(index, CARD_CONTROLLER_INDEX);
0203     outb((uint8_t)(data >> 8), CARD_CONTROLLER_DATA);
0204 
0205     return data;
0206 }
0207 
0208 static inline int search_nonuse_irq(void)
0209 {
0210     int i;
0211 
0212     for (i = 0; i < 16; i++) {
0213         if (vrc4171_irq_mask & (1 << i)) {
0214             vrc4171_irq_mask &= ~(1 << i);
0215             return i;
0216         }
0217     }
0218 
0219     return -1;
0220 }
0221 
0222 static int pccard_init(struct pcmcia_socket *sock)
0223 {
0224     struct vrc4171_socket *socket;
0225     unsigned int slot;
0226 
0227     sock->features |= SS_CAP_PCCARD | SS_CAP_PAGE_REGS;
0228     sock->irq_mask = 0;
0229     sock->map_size = 0x1000;
0230     sock->pci_irq = vrc4171_irq;
0231 
0232     slot = sock->sock;
0233     socket = &vrc4171_sockets[slot];
0234     socket->csc_irq = search_nonuse_irq();
0235     socket->io_irq = search_nonuse_irq();
0236     spin_lock_init(&socket->lock);
0237 
0238     return 0;
0239 }
0240 
0241 static int pccard_get_status(struct pcmcia_socket *sock, u_int *value)
0242 {
0243     unsigned int slot;
0244     uint8_t status, sense;
0245     u_int val = 0;
0246 
0247     if (sock == NULL || sock->sock >= CARD_MAX_SLOTS || value == NULL)
0248         return -EINVAL;
0249 
0250     slot = sock->sock;
0251 
0252     status = exca_read_byte(slot, I365_STATUS);
0253     if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
0254         if (status & I365_CS_STSCHG)
0255             val |= SS_STSCHG;
0256     } else {
0257         if (!(status & I365_CS_BVD1))
0258             val |= SS_BATDEAD;
0259         else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
0260             val |= SS_BATWARN;
0261     }
0262     if ((status & I365_CS_DETECT) == I365_CS_DETECT)
0263         val |= SS_DETECT;
0264     if (status & I365_CS_WRPROT)
0265         val |= SS_WRPROT;
0266     if (status & I365_CS_READY)
0267         val |= SS_READY;
0268     if (status & I365_CS_POWERON)
0269         val |= SS_POWERON;
0270 
0271     sense = exca_read_byte(slot, CARD_VOLTAGE_SENSE);
0272     switch (sense) {
0273     case VCC_3VORXV_CAPABLE:
0274         val |= SS_3VCARD | SS_XVCARD;
0275         break;
0276     case VCC_XV_ONLY:
0277         val |= SS_XVCARD;
0278         break;
0279     case VCC_3V_CAPABLE:
0280         val |= SS_3VCARD;
0281         break;
0282     default:
0283         /* 5V only */
0284         break;
0285     }
0286 
0287     *value = val;
0288 
0289     return 0;
0290 }
0291 
0292 static inline uint8_t set_Vcc_value(u_char Vcc)
0293 {
0294     switch (Vcc) {
0295     case 33:
0296         return VCC_3V;
0297     case 50:
0298         return VCC_5V;
0299     }
0300 
0301     /* Small voltage is chosen for safety. */
0302     return VCC_3V;
0303 }
0304 
0305 static int pccard_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
0306 {
0307     struct vrc4171_socket *socket;
0308     unsigned int slot;
0309     uint8_t voltage, power, control, cscint;
0310 
0311     if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
0312         (state->Vpp != state->Vcc && state->Vpp != 0) ||
0313         (state->Vcc != 50 && state->Vcc != 33 && state->Vcc != 0))
0314         return -EINVAL;
0315 
0316     slot = sock->sock;
0317     socket = &vrc4171_sockets[slot];
0318 
0319     spin_lock_irq(&socket->lock);
0320 
0321     voltage = set_Vcc_value(state->Vcc);
0322     exca_write_byte(slot, CARD_VOLTAGE_SELECT, voltage);
0323 
0324     power = POWER_ENABLE;
0325     if (state->Vpp == state->Vcc)
0326         power |= VPP_GET_VCC;
0327     if (state->flags & SS_OUTPUT_ENA)
0328         power |= I365_PWR_OUT;
0329     exca_write_byte(slot, I365_POWER, power);
0330 
0331     control = 0;
0332     if (state->io_irq != 0)
0333         control |= socket->io_irq;
0334     if (state->flags & SS_IOCARD)
0335         control |= I365_PC_IOCARD;
0336     if (state->flags & SS_RESET)
0337         control &= ~I365_PC_RESET;
0338     else
0339         control |= I365_PC_RESET;
0340     exca_write_byte(slot, I365_INTCTL, control);
0341 
0342         cscint = 0;
0343         exca_write_byte(slot, I365_CSCINT, cscint);
0344     exca_read_byte(slot, I365_CSC); /* clear CardStatus change */
0345     if (state->csc_mask != 0)
0346         cscint |= socket->csc_irq << 8;
0347     if (state->flags & SS_IOCARD) {
0348         if (state->csc_mask & SS_STSCHG)
0349             cscint |= I365_CSC_STSCHG;
0350     } else {
0351         if (state->csc_mask & SS_BATDEAD)
0352             cscint |= I365_CSC_BVD1;
0353         if (state->csc_mask & SS_BATWARN)
0354             cscint |= I365_CSC_BVD2;
0355     }
0356     if (state->csc_mask & SS_READY)
0357         cscint |= I365_CSC_READY;
0358     if (state->csc_mask & SS_DETECT)
0359         cscint |= I365_CSC_DETECT;
0360         exca_write_byte(slot, I365_CSCINT, cscint);
0361 
0362     spin_unlock_irq(&socket->lock);
0363 
0364     return 0;
0365 }
0366 
0367 static int pccard_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
0368 {
0369     unsigned int slot;
0370     uint8_t ioctl, addrwin;
0371     u_char map;
0372 
0373     if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
0374         io == NULL || io->map >= IO_MAX_MAPS ||
0375         io->start > 0xffff || io->stop > 0xffff || io->start > io->stop)
0376         return -EINVAL;
0377 
0378     slot = sock->sock;
0379     map = io->map;
0380 
0381     addrwin = exca_read_byte(slot, I365_ADDRWIN);
0382     if (addrwin & I365_ENA_IO(map)) {
0383         addrwin &= ~I365_ENA_IO(map);
0384         exca_write_byte(slot, I365_ADDRWIN, addrwin);
0385     }
0386 
0387     exca_write_word(slot, I365_IO(map)+I365_W_START, io->start);
0388     exca_write_word(slot, I365_IO(map)+I365_W_STOP, io->stop);
0389 
0390     ioctl = 0;
0391     if (io->speed > 0)
0392         ioctl |= I365_IOCTL_WAIT(map);
0393     if (io->flags & MAP_16BIT)
0394         ioctl |= I365_IOCTL_16BIT(map);
0395     if (io->flags & MAP_AUTOSZ)
0396         ioctl |= I365_IOCTL_IOCS16(map);
0397     if (io->flags & MAP_0WS)
0398         ioctl |= I365_IOCTL_0WS(map);
0399     exca_write_byte(slot, I365_IOCTL, ioctl);
0400 
0401     if (io->flags & MAP_ACTIVE) {
0402         addrwin |= I365_ENA_IO(map);
0403         exca_write_byte(slot, I365_ADDRWIN, addrwin);
0404     }
0405 
0406     return 0;
0407 }
0408 
0409 static int pccard_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
0410 {
0411     unsigned int slot;
0412     uint16_t start, stop, offset;
0413     uint8_t addrwin;
0414     u_char map;
0415 
0416     if (sock == NULL || sock->sock >= CARD_MAX_SLOTS ||
0417         mem == NULL || mem->map >= MEM_MAX_MAPS ||
0418         mem->res->start < CARD_MEM_START || mem->res->start > CARD_MEM_END ||
0419         mem->res->end < CARD_MEM_START || mem->res->end > CARD_MEM_END ||
0420         mem->res->start > mem->res->end ||
0421         mem->card_start > CARD_MAX_MEM_OFFSET ||
0422         mem->speed > CARD_MAX_MEM_SPEED)
0423         return -EINVAL;
0424 
0425     slot = sock->sock;
0426     map = mem->map;
0427 
0428     addrwin = exca_read_byte(slot, I365_ADDRWIN);
0429     if (addrwin & I365_ENA_MEM(map)) {
0430         addrwin &= ~I365_ENA_MEM(map);
0431         exca_write_byte(slot, I365_ADDRWIN, addrwin);
0432     }
0433 
0434     start = (mem->res->start >> 12) & 0x3fff;
0435     if (mem->flags & MAP_16BIT)
0436         start |= I365_MEM_16BIT;
0437     exca_write_word(slot, I365_MEM(map)+I365_W_START, start);
0438 
0439     stop = (mem->res->end >> 12) & 0x3fff;
0440     switch (mem->speed) {
0441     case 0:
0442         break;
0443     case 1:
0444         stop |= I365_MEM_WS0;
0445         break;
0446     case 2:
0447         stop |= I365_MEM_WS1;
0448         break;
0449     default:
0450         stop |= I365_MEM_WS0 | I365_MEM_WS1;
0451         break;
0452     }
0453     exca_write_word(slot, I365_MEM(map)+I365_W_STOP, stop);
0454 
0455     offset = (mem->card_start >> 12) & 0x3fff;
0456     if (mem->flags & MAP_ATTRIB)
0457         offset |= I365_MEM_REG;
0458     if (mem->flags & MAP_WRPROT)
0459         offset |= I365_MEM_WRPROT;
0460     exca_write_word(slot, I365_MEM(map)+I365_W_OFF, offset);
0461 
0462     if (mem->flags & MAP_ACTIVE) {
0463         addrwin |= I365_ENA_MEM(map);
0464         exca_write_byte(slot, I365_ADDRWIN, addrwin);
0465     }
0466 
0467     return 0;
0468 }
0469 
0470 static struct pccard_operations vrc4171_pccard_operations = {
0471     .init           = pccard_init,
0472     .get_status     = pccard_get_status,
0473     .set_socket     = pccard_set_socket,
0474     .set_io_map     = pccard_set_io_map,
0475     .set_mem_map        = pccard_set_mem_map,
0476 };
0477 
0478 static inline unsigned int get_events(int slot)
0479 {
0480     unsigned int events = 0;
0481     uint8_t status, csc;
0482 
0483     status = exca_read_byte(slot, I365_STATUS);
0484     csc = exca_read_byte(slot, I365_CSC);
0485 
0486     if (exca_read_byte(slot, I365_INTCTL) & I365_PC_IOCARD) {
0487         if ((csc & I365_CSC_STSCHG) && (status & I365_CS_STSCHG))
0488             events |= SS_STSCHG;
0489     } else {
0490         if (csc & (I365_CSC_BVD1 | I365_CSC_BVD2)) {
0491             if (!(status & I365_CS_BVD1))
0492                 events |= SS_BATDEAD;
0493             else if ((status & (I365_CS_BVD1 | I365_CS_BVD2)) == I365_CS_BVD1)
0494                 events |= SS_BATWARN;
0495         }
0496     }
0497     if ((csc & I365_CSC_READY) && (status & I365_CS_READY))
0498         events |= SS_READY;
0499     if ((csc & I365_CSC_DETECT) && ((status & I365_CS_DETECT) == I365_CS_DETECT))
0500         events |= SS_DETECT;
0501 
0502     return events;
0503 }
0504 
0505 static irqreturn_t pccard_interrupt(int irq, void *dev_id)
0506 {
0507     struct vrc4171_socket *socket;
0508     unsigned int events;
0509     irqreturn_t retval = IRQ_NONE;
0510     uint16_t status;
0511 
0512     status = vrc4171_get_irq_status();
0513     if (status & IRQ_A) {
0514         socket = &vrc4171_sockets[CARD_SLOTA];
0515         if (socket->slot == SLOT_INITIALIZED) {
0516             if (status & (1 << socket->csc_irq)) {
0517                 events = get_events(CARD_SLOTA);
0518                 if (events != 0) {
0519                     pcmcia_parse_events(&socket->pcmcia_socket, events);
0520                     retval = IRQ_HANDLED;
0521                 }
0522             }
0523         }
0524     }
0525 
0526     if (status & IRQ_B) {
0527         socket = &vrc4171_sockets[CARD_SLOTB];
0528         if (socket->slot == SLOT_INITIALIZED) {
0529             if (status & (1 << socket->csc_irq)) {
0530                 events = get_events(CARD_SLOTB);
0531                 if (events != 0) {
0532                     pcmcia_parse_events(&socket->pcmcia_socket, events);
0533                     retval = IRQ_HANDLED;
0534                 }
0535             }
0536         }
0537     }
0538 
0539     return retval;
0540 }
0541 
0542 static inline void reserve_using_irq(int slot)
0543 {
0544     unsigned int irq;
0545 
0546     irq = exca_read_byte(slot, I365_INTCTL);
0547     irq &= 0x0f;
0548     vrc4171_irq_mask &= ~(1 << irq);
0549 
0550     irq = exca_read_byte(slot, I365_CSCINT);
0551     irq = (irq & 0xf0) >> 4;
0552     vrc4171_irq_mask &= ~(1 << irq);
0553 }
0554 
0555 static int vrc4171_add_sockets(void)
0556 {
0557     struct vrc4171_socket *socket;
0558     int slot, retval;
0559 
0560     for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
0561         if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
0562             continue;
0563 
0564         socket = &vrc4171_sockets[slot];
0565         if (socket->slot != SLOT_PROBE) {
0566             uint8_t addrwin;
0567 
0568             switch (socket->slot) {
0569             case SLOT_NOPROBE_MEM:
0570                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
0571                 addrwin &= 0x1f;
0572                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
0573                 break;
0574             case SLOT_NOPROBE_IO:
0575                 addrwin = exca_read_byte(slot, I365_ADDRWIN);
0576                 addrwin &= 0xc0;
0577                 exca_write_byte(slot, I365_ADDRWIN, addrwin);
0578                 break;
0579             default:
0580                 break;
0581             }
0582 
0583             reserve_using_irq(slot);
0584             continue;
0585         }
0586 
0587         sprintf(socket->name, "NEC VRC4171 Card Slot %1c", 'A' + slot);
0588         socket->pcmcia_socket.dev.parent = &vrc4171_card_device.dev;
0589         socket->pcmcia_socket.ops = &vrc4171_pccard_operations;
0590         socket->pcmcia_socket.owner = THIS_MODULE;
0591 
0592         retval = pcmcia_register_socket(&socket->pcmcia_socket);
0593         if (retval < 0)
0594             return retval;
0595 
0596         exca_write_byte(slot, I365_ADDRWIN, 0);
0597         exca_write_byte(slot, GLOBAL_CONTROL, 0);
0598 
0599         socket->slot = SLOT_INITIALIZED;
0600     }
0601 
0602     return 0;
0603 }
0604 
0605 static void vrc4171_remove_sockets(void)
0606 {
0607     struct vrc4171_socket *socket;
0608     int slot;
0609 
0610     for (slot = 0; slot < CARD_MAX_SLOTS; slot++) {
0611         if (slot == CARD_SLOTB && vrc4171_slotb == SLOTB_IS_NONE)
0612             continue;
0613 
0614         socket = &vrc4171_sockets[slot];
0615         if (socket->slot == SLOT_INITIALIZED)
0616             pcmcia_unregister_socket(&socket->pcmcia_socket);
0617 
0618         socket->slot = SLOT_PROBE;
0619     }
0620 }
0621 
0622 static int vrc4171_card_setup(char *options)
0623 {
0624     if (options == NULL || *options == '\0')
0625         return 1;
0626 
0627     if (strncmp(options, "irq:", 4) == 0) {
0628         int irq;
0629         options += 4;
0630         irq = simple_strtoul(options, &options, 0);
0631         if (irq >= 0 && irq < nr_irqs)
0632             vrc4171_irq = irq;
0633 
0634         if (*options != ',')
0635             return 1;
0636         options++;
0637     }
0638 
0639     if (strncmp(options, "slota:", 6) == 0) {
0640         options += 6;
0641         if (*options != '\0') {
0642             if (strncmp(options, "memnoprobe", 10) == 0) {
0643                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_MEM;
0644                 options += 10;
0645             } else if (strncmp(options, "ionoprobe", 9) == 0) {
0646                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_IO;
0647                 options += 9;
0648             } else if ( strncmp(options, "noprobe", 7) == 0) {
0649                 vrc4171_sockets[CARD_SLOTA].slot = SLOT_NOPROBE_ALL;
0650                 options += 7;
0651             }
0652 
0653             if (*options != ',')
0654                 return 1;
0655             options++;
0656         } else
0657             return 1;
0658 
0659     }
0660 
0661     if (strncmp(options, "slotb:", 6) == 0) {
0662         options += 6;
0663         if (*options != '\0') {
0664             if (strncmp(options, "pccard", 6) == 0) {
0665                 vrc4171_slotb = SLOTB_IS_PCCARD;
0666                 options += 6;
0667             } else if (strncmp(options, "cf", 2) == 0) {
0668                 vrc4171_slotb = SLOTB_IS_CF;
0669                 options += 2;
0670             } else if (strncmp(options, "flashrom", 8) == 0) {
0671                 vrc4171_slotb = SLOTB_IS_FLASHROM;
0672                 options += 8;
0673             } else if (strncmp(options, "none", 4) == 0) {
0674                 vrc4171_slotb = SLOTB_IS_NONE;
0675                 options += 4;
0676             }
0677 
0678             if (*options != ',')
0679                 return 1;
0680             options++;
0681 
0682             if (strncmp(options, "memnoprobe", 10) == 0)
0683                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_MEM;
0684             if (strncmp(options, "ionoprobe", 9) == 0)
0685                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_IO;
0686             if (strncmp(options, "noprobe", 7) == 0)
0687                 vrc4171_sockets[CARD_SLOTB].slot = SLOT_NOPROBE_ALL;
0688         }
0689     }
0690 
0691     return 1;
0692 }
0693 
0694 __setup("vrc4171_card=", vrc4171_card_setup);
0695 
0696 static struct platform_driver vrc4171_card_driver = {
0697     .driver = {
0698         .name       = vrc4171_card_name,
0699     },
0700 };
0701 
0702 static int vrc4171_card_init(void)
0703 {
0704     int retval;
0705 
0706     retval = platform_driver_register(&vrc4171_card_driver);
0707     if (retval < 0)
0708         return retval;
0709 
0710     retval = platform_device_register(&vrc4171_card_device);
0711     if (retval < 0) {
0712         platform_driver_unregister(&vrc4171_card_driver);
0713         return retval;
0714     }
0715 
0716     vrc4171_set_multifunction_pin(vrc4171_slotb);
0717 
0718     retval = vrc4171_add_sockets();
0719     if (retval == 0)
0720         retval = request_irq(vrc4171_irq, pccard_interrupt, IRQF_SHARED,
0721                              vrc4171_card_name, vrc4171_sockets);
0722 
0723     if (retval < 0) {
0724         vrc4171_remove_sockets();
0725         platform_device_unregister(&vrc4171_card_device);
0726         platform_driver_unregister(&vrc4171_card_driver);
0727         return retval;
0728     }
0729 
0730     printk(KERN_INFO "%s, connected to IRQ %d\n",
0731         vrc4171_card_driver.driver.name, vrc4171_irq);
0732 
0733     return 0;
0734 }
0735 
0736 static void vrc4171_card_exit(void)
0737 {
0738     free_irq(vrc4171_irq, vrc4171_sockets);
0739     vrc4171_remove_sockets();
0740     platform_device_unregister(&vrc4171_card_device);
0741     platform_driver_unregister(&vrc4171_card_driver);
0742 }
0743 
0744 module_init(vrc4171_card_init);
0745 module_exit(vrc4171_card_exit);
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