diff options
Diffstat (limited to 'drivers/pcmcia/i82092.c')
| -rw-r--r-- | drivers/pcmcia/i82092.c | 383 |
1 files changed, 189 insertions, 194 deletions
diff --git a/drivers/pcmcia/i82092.c b/drivers/pcmcia/i82092.c index 4971a667c730..47854d8d2acb 100644 --- a/drivers/pcmcia/i82092.c +++ b/drivers/pcmcia/i82092.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0-only -/* +/* * Driver for Intel I82092AA PCI-PCMCIA bridge. * * (C) 2001 Red Hat, Inc. @@ -33,16 +33,16 @@ static const struct pci_device_id i82092aa_pci_ids[] = { MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids); static struct pci_driver i82092aa_pci_driver = { - .name = "i82092aa", - .id_table = i82092aa_pci_ids, - .probe = i82092aa_pci_probe, - .remove = i82092aa_pci_remove, + .name = "i82092aa", + .id_table = i82092aa_pci_ids, + .probe = i82092aa_pci_probe, + .remove = i82092aa_pci_remove, }; /* the pccard structure and its functions */ static struct pccard_operations i82092aa_operations = { - .init = i82092aa_init, + .init = i82092aa_init, .get_status = i82092aa_get_status, .set_socket = i82092aa_set_socket, .set_io_map = i82092aa_set_io_map, @@ -53,33 +53,35 @@ static struct pccard_operations i82092aa_operations = { struct socket_info { int number; - int card_state; /* 0 = no socket, - 1 = empty socket, - 2 = card but not initialized, - 3 = operational card */ - unsigned int io_base; /* base io address of the socket */ - + int card_state; + /* 0 = no socket, + * 1 = empty socket, + * 2 = card but not initialized, + * 3 = operational card + */ + unsigned int io_base; /* base io address of the socket */ + struct pcmcia_socket socket; struct pci_dev *dev; /* The PCI device for the socket */ }; #define MAX_SOCKETS 4 static struct socket_info sockets[MAX_SOCKETS]; -static int socket_count; /* shortcut */ +static int socket_count; /* shortcut */ static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { unsigned char configbyte; int i, ret; - + enter("i82092aa_pci_probe"); - + if ((ret = pci_enable_device(dev))) return ret; - + pci_read_config_byte(dev, 0x40, &configbyte); /* PCI Configuration Control */ - switch(configbyte&6) { + switch (configbyte&6) { case 0: socket_count = 2; break; @@ -90,7 +92,7 @@ static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *i case 6: socket_count = 4; break; - + default: dev_err(&dev->dev, "Oops, you did something we didn't think of.\n"); @@ -104,8 +106,8 @@ static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *i ret = -EBUSY; goto err_out_disable; } - - for (i = 0;i<socket_count;i++) { + + for (i = 0; i < socket_count; i++) { sockets[i].card_state = 1; /* 1 = present but empty */ sockets[i].io_base = pci_resource_start(dev, 0); sockets[i].socket.features |= SS_CAP_PCCARD; @@ -116,7 +118,7 @@ static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *i sockets[i].socket.owner = THIS_MODULE; sockets[i].number = i; - + if (card_present(i)) { sockets[i].card_state = 3; dev_dbg(&dev->dev, "slot %i is occupied\n", i); @@ -124,7 +126,7 @@ static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *i dev_dbg(&dev->dev, "slot %i is vacant\n", i); } } - + /* Now, specifiy that all interrupts are to be done as PCI interrupts */ configbyte = 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */ pci_write_config_byte(dev, 0x50, configbyte); /* PCI Interrupt Routing Register */ @@ -137,7 +139,7 @@ static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *i goto err_out_free_res; } - for (i = 0; i<socket_count; i++) { + for (i = 0; i < socket_count; i++) { sockets[i].socket.dev.parent = &dev->dev; sockets[i].socket.ops = &i82092aa_operations; sockets[i].socket.resource_ops = &pccard_nonstatic_ops; @@ -152,7 +154,7 @@ static int i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *i err_out_free_sockets: if (i) { - for (i--;i>=0;i--) { + for (i--; i >= 0; i--) { pcmcia_unregister_socket(&sockets[i].socket); } } @@ -161,7 +163,7 @@ err_out_free_res: release_region(pci_resource_start(dev, 0), 2); err_out_disable: pci_disable_device(dev); - return ret; + return ret; } static void i82092aa_pci_remove(struct pci_dev *dev) @@ -169,7 +171,7 @@ static void i82092aa_pci_remove(struct pci_dev *dev) int i; enter("i82092aa_pci_remove"); - + free_irq(dev->irq, i82092aa_interrupt); for (i = 0; i < socket_count; i++) @@ -187,12 +189,12 @@ static unsigned char indirect_read(int socket, unsigned short reg) unsigned short int port; unsigned char val; unsigned long flags; - spin_lock_irqsave(&port_lock,flags); + spin_lock_irqsave(&port_lock, flags); reg += socket * 0x40; port = sockets[socket].io_base; - outb(reg,port); + outb(reg, port); val = inb(port+1); - spin_unlock_irqrestore(&port_lock,flags); + spin_unlock_irqrestore(&port_lock, flags); return val; } @@ -202,15 +204,15 @@ static unsigned short indirect_read16(int socket, unsigned short reg) unsigned short int port; unsigned short tmp; unsigned long flags; - spin_lock_irqsave(&port_lock,flags); + spin_lock_irqsave(&port_lock, flags); reg = reg + socket * 0x40; port = sockets[socket].io_base; - outb(reg,port); + outb(reg, port); tmp = inb(port+1); reg++; - outb(reg,port); + outb(reg, port); tmp = tmp | (inb(port+1)<<8); - spin_unlock_irqrestore(&port_lock,flags); + spin_unlock_irqrestore(&port_lock, flags); return tmp; } #endif @@ -219,12 +221,12 @@ static void indirect_write(int socket, unsigned short reg, unsigned char value) { unsigned short int port; unsigned long flags; - spin_lock_irqsave(&port_lock,flags); + spin_lock_irqsave(&port_lock, flags); reg = reg + socket * 0x40; - port = sockets[socket].io_base; - outb(reg,port); - outb(value,port+1); - spin_unlock_irqrestore(&port_lock,flags); + port = sockets[socket].io_base; + outb(reg, port); + outb(value, port+1); + spin_unlock_irqrestore(&port_lock, flags); } static void indirect_setbit(int socket, unsigned short reg, unsigned char mask) @@ -232,15 +234,15 @@ static void indirect_setbit(int socket, unsigned short reg, unsigned char mask) unsigned short int port; unsigned char val; unsigned long flags; - spin_lock_irqsave(&port_lock,flags); + spin_lock_irqsave(&port_lock, flags); reg = reg + socket * 0x40; - port = sockets[socket].io_base; - outb(reg,port); + port = sockets[socket].io_base; + outb(reg, port); val = inb(port+1); val |= mask; - outb(reg,port); - outb(val,port+1); - spin_unlock_irqrestore(&port_lock,flags); + outb(reg, port); + outb(val, port+1); + spin_unlock_irqrestore(&port_lock, flags); } @@ -249,15 +251,15 @@ static void indirect_resetbit(int socket, unsigned short reg, unsigned char mask unsigned short int port; unsigned char val; unsigned long flags; - spin_lock_irqsave(&port_lock,flags); + spin_lock_irqsave(&port_lock, flags); reg = reg + socket * 0x40; - port = sockets[socket].io_base; - outb(reg,port); + port = sockets[socket].io_base; + outb(reg, port); val = inb(port+1); val &= ~mask; - outb(reg,port); - outb(val,port+1); - spin_unlock_irqrestore(&port_lock,flags); + outb(reg, port); + outb(val, port+1); + spin_unlock_irqrestore(&port_lock, flags); } static void indirect_write16(int socket, unsigned short reg, unsigned short value) @@ -265,20 +267,20 @@ static void indirect_write16(int socket, unsigned short reg, unsigned short valu unsigned short int port; unsigned char val; unsigned long flags; - spin_lock_irqsave(&port_lock,flags); + spin_lock_irqsave(&port_lock, flags); reg = reg + socket * 0x40; - port = sockets[socket].io_base; - - outb(reg,port); + port = sockets[socket].io_base; + + outb(reg, port); val = value & 255; - outb(val,port+1); - + outb(val, port+1); + reg++; - - outb(reg,port); + + outb(reg, port); val = value>>8; - outb(val,port+1); - spin_unlock_irqrestore(&port_lock,flags); + outb(val, port+1); + spin_unlock_irqrestore(&port_lock, flags); } /* simple helper functions */ @@ -287,12 +289,12 @@ static int cycle_time = 120; static int to_cycles(int ns) { - if (cycle_time!=0) + if (cycle_time != 0) return ns/cycle_time; else return 0; } - + /* Interrupt handler functionality */ @@ -302,56 +304,55 @@ static irqreturn_t i82092aa_interrupt(int irq, void *dev) int loopcount = 0; int handled = 0; - unsigned int events, active=0; - + unsigned int events, active = 0; + /* enter("i82092aa_interrupt");*/ - + while (1) { loopcount++; - if (loopcount>20) { + if (loopcount > 20) { pr_err("i82092aa: infinite eventloop in interrupt\n"); break; } - + active = 0; - - for (i=0;i<socket_count;i++) { + + for (i = 0; i < socket_count; i++) { int csc; - if (sockets[i].card_state==0) /* Inactive socket, should not happen */ + if (sockets[i].card_state == 0) /* Inactive socket, should not happen */ + continue; + + csc = indirect_read(i, I365_CSC); /* card status change register */ + + if (csc == 0) /* no events on this socket */ continue; - - csc = indirect_read(i,I365_CSC); /* card status change register */ - - if (csc==0) /* no events on this socket */ - continue; handled = 1; events = 0; - + if (csc & I365_CSC_DETECT) { events |= SS_DETECT; dev_info(&sockets[i].dev->dev, "Card detected in socket %i!\n", i); - } - - if (indirect_read(i,I365_INTCTL) & I365_PC_IOCARD) { + } + + if (indirect_read(i, I365_INTCTL) & I365_PC_IOCARD) { /* For IO/CARDS, bit 0 means "read the card" */ - events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0; + events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0; } else { /* Check for battery/ready events */ events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0; events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0; events |= (csc & I365_CSC_READY) ? SS_READY : 0; } - + if (events) { pcmcia_parse_events(&sockets[i].socket, events); } active |= events; } - - if (active==0) /* no more events to handle */ - break; - + + if (active == 0) /* no more events to handle */ + break; } return IRQ_RETVAL(handled); /* leave("i82092aa_interrupt");*/ @@ -362,22 +363,22 @@ static irqreturn_t i82092aa_interrupt(int irq, void *dev) /* socket functions */ static int card_present(int socketno) -{ +{ unsigned int val; enter("card_present"); - - if ((socketno<0) || (socketno >= MAX_SOCKETS)) + + if ((socketno < 0) || (socketno >= MAX_SOCKETS)) return 0; if (sockets[socketno].io_base == 0) return 0; - + val = indirect_read(socketno, 1); /* Interface status register */ - if ((val&12)==12) { + if ((val&12) == 12) { leave("card_present 1"); return 1; } - + leave("card_present 0"); return 0; } @@ -385,40 +386,36 @@ static int card_present(int socketno) static void set_bridge_state(int sock) { enter("set_bridge_state"); - indirect_write(sock, I365_GBLCTL,0x00); - indirect_write(sock, I365_GENCTL,0x00); - - indirect_setbit(sock, I365_INTCTL,0x08); + indirect_write(sock, I365_GBLCTL, 0x00); + indirect_write(sock, I365_GENCTL, 0x00); + + indirect_setbit(sock, I365_INTCTL, 0x08); leave("set_bridge_state"); } - - - - static int i82092aa_init(struct pcmcia_socket *sock) { int i; struct resource res = { .start = 0, .end = 0x0fff }; - pccard_io_map io = { 0, 0, 0, 0, 1 }; + pccard_io_map io = { 0, 0, 0, 0, 1 }; pccard_mem_map mem = { .res = &res, }; - - enter("i82092aa_init"); - - for (i = 0; i < 2; i++) { - io.map = i; - i82092aa_set_io_map(sock, &io); + + enter("i82092aa_init"); + + for (i = 0; i < 2; i++) { + io.map = i; + i82092aa_set_io_map(sock, &io); } - for (i = 0; i < 5; i++) { - mem.map = i; - i82092aa_set_mem_map(sock, &mem); + for (i = 0; i < 5; i++) { + mem.map = i; + i82092aa_set_mem_map(sock, &mem); } leave("i82092aa_init"); return 0; } - + static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value) { unsigned int sock = container_of(socket, struct socket_info, socket)->number; @@ -426,16 +423,16 @@ static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value) enter("i82092aa_get_status"); - status = indirect_read(sock,I365_STATUS); /* Interface Status Register */ + status = indirect_read(sock, I365_STATUS); /* Interface Status Register */ *value = 0; - + if ((status & I365_CS_DETECT) == I365_CS_DETECT) { *value |= SS_DETECT; } - + /* IO cards have a different meaning of bits 0,1 */ /* Also notice the inverse-logic on the bits */ - if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) { + if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) { /* IO card */ if (!(status & I365_CS_STSCHG)) *value |= SS_STSCHG; @@ -445,13 +442,13 @@ static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value) if (!(status & I365_CS_BVD2)) *value |= SS_BATWARN; } - + if (status & I365_CS_WRPROT) (*value) |= SS_WRPROT; /* card is write protected */ - + if (status & I365_CS_READY) (*value) |= SS_READY; /* card is not busy */ - + if (status & I365_CS_POWERON) (*value) |= SS_POWERON; /* power is applied to the card */ @@ -460,33 +457,33 @@ static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value) } -static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state) +static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state) { struct socket_info *sock_info = container_of(socket, struct socket_info, socket); unsigned int sock = sock_info->number; unsigned char reg; - + enter("i82092aa_set_socket"); - + /* First, set the global controller options */ - + set_bridge_state(sock); - + /* Values for the IGENC register */ - + reg = 0; - if (!(state->flags & SS_RESET)) /* The reset bit has "inverse" logic */ - reg = reg | I365_PC_RESET; - if (state->flags & SS_IOCARD) + if (!(state->flags & SS_RESET)) /* The reset bit has "inverse" logic */ + reg = reg | I365_PC_RESET; + if (state->flags & SS_IOCARD) reg = reg | I365_PC_IOCARD; - - indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */ - + + indirect_write(sock, I365_INTCTL, reg); /* IGENC, Interrupt and General Control Register */ + /* Power registers */ - + reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */ - + if (state->flags & SS_PWR_AUTO) { dev_info(&sock_info->dev->dev, "Auto power\n"); reg |= I365_PWR_AUTO; /* automatic power mngmnt */ @@ -495,11 +492,11 @@ static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *sta dev_info(&sock_info->dev->dev, "Power Enabled\n"); reg |= I365_PWR_OUT; /* enable power */ } - + switch (state->Vcc) { - case 0: + case 0: break; - case 50: + case 50: dev_info(&sock_info->dev->dev, "setting voltage to Vcc to 5V on socket %i\n", sock); @@ -512,19 +509,18 @@ static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *sta leave("i82092aa_set_socket"); return -EINVAL; } - - + switch (state->Vpp) { - case 0: + case 0: dev_info(&sock_info->dev->dev, "not setting Vpp on socket %i\n", sock); break; - case 50: + case 50: dev_info(&sock_info->dev->dev, "setting Vpp to 5.0 for socket %i\n", sock); reg |= I365_VPP1_5V | I365_VPP2_5V; break; - case 120: + case 120: dev_info(&sock_info->dev->dev, "setting Vpp to 12.0\n"); reg |= I365_VPP1_12V | I365_VPP2_12V; break; @@ -535,12 +531,12 @@ static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *sta leave("i82092aa_set_socket"); return -EINVAL; } - - if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */ - indirect_write(sock,I365_POWER,reg); - + + if (reg != indirect_read(sock, I365_POWER)) /* only write if changed */ + indirect_write(sock, I365_POWER, reg); + /* Enable specific interrupt events */ - + reg = 0x00; if (state->csc_mask & SS_DETECT) { reg |= I365_CSC_DETECT; @@ -549,19 +545,19 @@ static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *sta if (state->csc_mask & SS_STSCHG) reg |= I365_CSC_STSCHG; } else { - if (state->csc_mask & SS_BATDEAD) + if (state->csc_mask & SS_BATDEAD) reg |= I365_CSC_BVD1; - if (state->csc_mask & SS_BATWARN) + if (state->csc_mask & SS_BATWARN) reg |= I365_CSC_BVD2; - if (state->csc_mask & SS_READY) - reg |= I365_CSC_READY; - + if (state->csc_mask & SS_READY) + reg |= I365_CSC_READY; + } - + /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/ - - indirect_write(sock,I365_CSCINT,reg); - (void)indirect_read(sock,I365_CSC); + + indirect_write(sock, I365_CSCINT, reg); + (void)indirect_read(sock, I365_CSC); leave("i82092aa_set_socket"); return 0; @@ -573,41 +569,41 @@ static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_ma socket); unsigned int sock = sock_info->number; unsigned char map, ioctl; - + enter("i82092aa_set_io_map"); - + map = io->map; - - /* Check error conditions */ + + /* Check error conditions */ if (map > 1) { leave("i82092aa_set_io_map with invalid map"); return -EINVAL; } - if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){ + if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)) { leave("i82092aa_set_io_map with invalid io"); return -EINVAL; } - /* Turn off the window before changing anything */ + /* Turn off the window before changing anything */ if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map)) indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map)); /* write the new values */ - indirect_write16(sock,I365_IO(map)+I365_W_START,io->start); - indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop); - - ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map); - + indirect_write16(sock, I365_IO(map)+I365_W_START, io->start); + indirect_write16(sock, I365_IO(map)+I365_W_STOP, io->stop); + + ioctl = indirect_read(sock, I365_IOCTL) & ~I365_IOCTL_MASK(map); + if (io->flags & (MAP_16BIT|MAP_AUTOSZ)) ioctl |= I365_IOCTL_16BIT(map); - - indirect_write(sock,I365_IOCTL,ioctl); - + + indirect_write(sock, I365_IOCTL, ioctl); + /* Turn the window back on if needed */ if (io->flags & MAP_ACTIVE) - indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map)); - - leave("i82092aa_set_io_map"); + indirect_setbit(sock, I365_ADDRWIN, I365_ENA_IO(map)); + + leave("i82092aa_set_io_map"); return 0; } @@ -618,20 +614,20 @@ static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_ struct pci_bus_region region; unsigned short base, i; unsigned char map; - + enter("i82092aa_set_mem_map"); pcibios_resource_to_bus(sock_info->dev->bus, ®ion, mem->res); - + map = mem->map; if (map > 4) { leave("i82092aa_set_mem_map: invalid map"); return -EINVAL; } - - - if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) || - (mem->speed > 1000) ) { + + + if ((mem->card_start > 0x3ffffff) || (region.start > region.end) || + (mem->speed > 1000)) { leave("i82092aa_set_mem_map: invalid address / speed"); dev_err(&sock_info->dev->dev, "invalid mem map for socket %i: %llx to %llx with a " @@ -642,24 +638,23 @@ static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_ mem->card_start); return -EINVAL; } - + /* Turn off the window before changing anything */ if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map)) - indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map)); - - + indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map)); + /* write the start address */ base = I365_MEM(map); i = (region.start >> 12) & 0x0fff; - if (mem->flags & MAP_16BIT) + if (mem->flags & MAP_16BIT) i |= I365_MEM_16BIT; if (mem->flags & MAP_0WS) - i |= I365_MEM_0WS; - indirect_write16(sock,base+I365_W_START,i); - + i |= I365_MEM_0WS; + indirect_write16(sock, base+I365_W_START, i); + /* write the stop address */ - - i= (region.end >> 12) & 0x0fff; + + i = (region.end >> 12) & 0x0fff; switch (to_cycles(mem->speed)) { case 0: break; @@ -673,22 +668,22 @@ static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_ i |= I365_MEM_WS1 | I365_MEM_WS0; break; } - - indirect_write16(sock,base+I365_W_STOP,i); - + + indirect_write16(sock, base+I365_W_STOP, i); + /* card start */ - + i = ((mem->card_start - region.start) >> 12) & 0x3fff; if (mem->flags & MAP_WRPROT) i |= I365_MEM_WRPROT; if (mem->flags & MAP_ATTRIB) i |= I365_MEM_REG; - indirect_write16(sock,base+I365_W_OFF,i); - + indirect_write16(sock, base+I365_W_OFF, i); + /* Enable the window if necessary */ if (mem->flags & MAP_ACTIVE) indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map)); - + leave("i82092aa_set_mem_map"); return 0; } @@ -702,7 +697,7 @@ static void i82092aa_module_exit(void) { enter("i82092aa_module_exit"); pci_unregister_driver(&i82092aa_pci_driver); - if (sockets[0].io_base>0) + if (sockets[0].io_base > 0) release_region(sockets[0].io_base, 2); leave("i82092aa_module_exit"); } |