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/*-
* Copyright (c) 2002-2005 M Warner Losh. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*
* This software may be derived from NetBSD i82365.c and other files with
* the following copyright:
*
* Copyright (c) 1997 Marc Horowitz. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Marc Horowitz.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/exca/exca.c 189579 2009-03-09 13:29:13Z imp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/condvar.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <dev/pccard/pccardreg.h>
#include <dev/pccard/pccardvar.h>
#include <dev/exca/excareg.h>
#include <dev/exca/excavar.h>
#ifdef EXCA_DEBUG
#define DEVPRINTF(dev, fmt, args...) device_printf((dev), (fmt), ## args)
#define DPRINTF(fmt, args...) printf(fmt, ## args)
#else
#define DEVPRINTF(dev, fmt, args...)
#define DPRINTF(fmt, args...)
#endif
static const char *chip_names[] =
{
"CardBus socket",
"Intel i82365SL-A/B or clone",
"Intel i82365sl-DF step",
"VLSI chip",
"Cirrus Logic PD6710",
"Cirrus logic PD6722",
"Cirrus Logic PD6729",
"Vadem 365",
"Vadem 465",
"Vadem 468",
"Vadem 469",
"Ricoh RF5C296",
"Ricoh RF5C396",
"IBM clone",
"IBM KING PCMCIA Controller"
};
static exca_getb_fn exca_mem_getb;
static exca_putb_fn exca_mem_putb;
static exca_getb_fn exca_io_getb;
static exca_putb_fn exca_io_putb;
/* memory */
#define EXCA_MEMINFO(NUM) { \
EXCA_SYSMEM_ADDR ## NUM ## _START_LSB, \
EXCA_SYSMEM_ADDR ## NUM ## _START_MSB, \
EXCA_SYSMEM_ADDR ## NUM ## _STOP_LSB, \
EXCA_SYSMEM_ADDR ## NUM ## _STOP_MSB, \
EXCA_SYSMEM_ADDR ## NUM ## _WIN, \
EXCA_CARDMEM_ADDR ## NUM ## _LSB, \
EXCA_CARDMEM_ADDR ## NUM ## _MSB, \
EXCA_ADDRWIN_ENABLE_MEM ## NUM, \
}
static struct mem_map_index_st {
int sysmem_start_lsb;
int sysmem_start_msb;
int sysmem_stop_lsb;
int sysmem_stop_msb;
int sysmem_win;
int cardmem_lsb;
int cardmem_msb;
int memenable;
} mem_map_index[] = {
EXCA_MEMINFO(0),
EXCA_MEMINFO(1),
EXCA_MEMINFO(2),
EXCA_MEMINFO(3),
EXCA_MEMINFO(4)
};
#undef EXCA_MEMINFO
static uint8_t
exca_mem_getb(struct exca_softc *sc, int reg)
{
return (bus_space_read_1(sc->bst, sc->bsh, sc->offset + reg));
}
static void
exca_mem_putb(struct exca_softc *sc, int reg, uint8_t val)
{
bus_space_write_1(sc->bst, sc->bsh, sc->offset + reg, val);
}
static uint8_t
exca_io_getb(struct exca_softc *sc, int reg)
{
bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_INDEX, reg + sc->offset);
return (bus_space_read_1(sc->bst, sc->bsh, EXCA_REG_DATA));
}
static void
exca_io_putb(struct exca_softc *sc, int reg, uint8_t val)
{
bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_INDEX, reg + sc->offset);
bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_DATA, val);
}
/*
* Helper function. This will map the requested memory slot. We setup the
* map before we call this function. This is used to initially force the
* mapping, as well as later restore the mapping after it has been destroyed
* in some fashion (due to a power event typically).
*/
static void
exca_do_mem_map(struct exca_softc *sc, int win)
{
struct mem_map_index_st *map;
struct pccard_mem_handle *mem;
uint32_t offset;
uint32_t mem16;
uint32_t attrmem;
map = &mem_map_index[win];
mem = &sc->mem[win];
mem16 = (mem->kind & PCCARD_MEM_16BIT) ?
EXCA_SYSMEM_ADDRX_START_MSB_DATASIZE_16BIT : 0;
attrmem = (mem->kind & PCCARD_MEM_ATTR) ?
EXCA_CARDMEM_ADDRX_MSB_REGACTIVE_ATTR : 0;
offset = ((mem->cardaddr >> EXCA_CARDMEM_ADDRX_SHIFT) -
(mem->addr >> EXCA_SYSMEM_ADDRX_SHIFT)) & 0x3fff;
exca_putb(sc, map->sysmem_start_lsb,
mem->addr >> EXCA_SYSMEM_ADDRX_SHIFT);
exca_putb(sc, map->sysmem_start_msb,
((mem->addr >> (EXCA_SYSMEM_ADDRX_SHIFT + 8)) &
EXCA_SYSMEM_ADDRX_START_MSB_ADDR_MASK) | mem16);
exca_putb(sc, map->sysmem_stop_lsb,
(mem->addr + mem->realsize - 1) >> EXCA_SYSMEM_ADDRX_SHIFT);
exca_putb(sc, map->sysmem_stop_msb,
(((mem->addr + mem->realsize - 1) >>
(EXCA_SYSMEM_ADDRX_SHIFT + 8)) &
EXCA_SYSMEM_ADDRX_STOP_MSB_ADDR_MASK) |
EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT2);
exca_putb(sc, map->sysmem_win, mem->addr >> EXCA_MEMREG_WIN_SHIFT);
exca_putb(sc, map->cardmem_lsb, offset & 0xff);
exca_putb(sc, map->cardmem_msb, ((offset >> 8) &
EXCA_CARDMEM_ADDRX_MSB_ADDR_MASK) | attrmem);
DPRINTF("%s %d-bit memory",
mem->kind & PCCARD_MEM_ATTR ? "attribute" : "common",
mem->kind & PCCARD_MEM_16BIT ? 16 : 8);
exca_setb(sc, EXCA_ADDRWIN_ENABLE, map->memenable |
EXCA_ADDRWIN_ENABLE_MEMCS16);
DELAY(100);
#ifdef EXCA_DEBUG
{
int r1, r2, r3, r4, r5, r6, r7;
r1 = exca_getb(sc, map->sysmem_start_msb);
r2 = exca_getb(sc, map->sysmem_start_lsb);
r3 = exca_getb(sc, map->sysmem_stop_msb);
r4 = exca_getb(sc, map->sysmem_stop_lsb);
r5 = exca_getb(sc, map->cardmem_msb);
r6 = exca_getb(sc, map->cardmem_lsb);
r7 = exca_getb(sc, map->sysmem_win);
printf("exca_do_mem_map win %d: %#02x%#02x %#02x%#02x "
"%#02x%#02x %#02x (%#08x+%#06x.%#06x*%#06x) flags %#x\n",
win, r1, r2, r3, r4, r5, r6, r7,
mem->addr, mem->size, mem->realsize,
mem->cardaddr, mem->kind);
}
#endif
}
/*
* public interface to map a resource. kind is the type of memory to
* map (either common or attribute). Memory created via this interface
* starts out at card address 0. Since the only way to set this is
* to set it on a struct resource after it has been mapped, we're safe
* in maping this assumption. Note that resources can be remapped using
* exca_do_mem_map so that's how the card address can be set later.
*/
int
exca_mem_map(struct exca_softc *sc, int kind, struct resource *res)
{
int win;
for (win = 0; win < EXCA_MEM_WINS; win++) {
if ((sc->memalloc & (1 << win)) == 0) {
sc->memalloc |= (1 << win);
break;
}
}
if (win >= EXCA_MEM_WINS)
return (ENOSPC);
if (sc->flags & EXCA_HAS_MEMREG_WIN) {
#ifdef __LP64__
if (rman_get_start(res) >> (EXCA_MEMREG_WIN_SHIFT + 8) != 0) {
device_printf(sc->dev,
"Does not support mapping above 4GB.");
return (EINVAL);
}
#endif
} else {
if (rman_get_start(res) >> EXCA_MEMREG_WIN_SHIFT != 0) {
device_printf(sc->dev,
"Does not support mapping above 16M.");
return (EINVAL);
}
}
sc->mem[win].cardaddr = 0;
sc->mem[win].memt = rman_get_bustag(res);
sc->mem[win].memh = rman_get_bushandle(res);
sc->mem[win].addr = rman_get_start(res);
sc->mem[win].size = rman_get_end(res) - sc->mem[win].addr + 1;
sc->mem[win].realsize = sc->mem[win].size + EXCA_MEM_PAGESIZE - 1;
sc->mem[win].realsize = sc->mem[win].realsize -
(sc->mem[win].realsize % EXCA_MEM_PAGESIZE);
sc->mem[win].kind = kind;
DPRINTF("exca_mem_map window %d bus %x+%x card addr %x\n",
win, sc->mem[win].addr, sc->mem[win].size, sc->mem[win].cardaddr);
exca_do_mem_map(sc, win);
return (0);
}
/*
* Private helper function. This turns off a given memory map that is in
* use. We do this by just clearing the enable bit in the pcic. If we needed
* to make memory unmapping/mapping pairs faster, we would have to store
* more state information about the pcic and then use that to intelligently
* to the map/unmap. However, since we don't do that sort of thing often
* (generally just at configure time), it isn't a case worth optimizing.
*/
static void
exca_mem_unmap(struct exca_softc *sc, int window)
{
if (window < 0 || window >= EXCA_MEM_WINS)
panic("exca_mem_unmap: window out of range");
exca_clrb(sc, EXCA_ADDRWIN_ENABLE, mem_map_index[window].memenable);
sc->memalloc &= ~(1 << window);
}
/*
* Find the map that we're using to hold the resource. This works well
* so long as the client drivers don't do silly things like map the same
* area mutliple times, or map both common and attribute memory at the
* same time. This latter restriction is a bug. We likely should just
* store a pointer to the res in the mem[x] data structure.
*/
static int
exca_mem_findmap(struct exca_softc *sc, struct resource *res)
{
int win;
for (win = 0; win < EXCA_MEM_WINS; win++) {
if (sc->mem[win].memt == rman_get_bustag(res) &&
sc->mem[win].addr == rman_get_start(res) &&
sc->mem[win].size == rman_get_size(res))
return (win);
}
return (-1);
}
/*
* Set the memory flag. This means that we are setting if the memory
* is coming from attribute memory or from common memory on the card.
* CIS entries are generally in attribute memory (although they can
* reside in common memory). Generally, this is the only use for attribute
* memory. However, some cards require their drivers to dance in both
* common and/or attribute memory and this interface (and setting the
* offset interface) exist for such cards.
*/
int
exca_mem_set_flags(struct exca_softc *sc, struct resource *res, uint32_t flags)
{
int win;
win = exca_mem_findmap(sc, res);
if (win < 0) {
device_printf(sc->dev,
"set_res_flags: specified resource not active\n");
return (ENOENT);
}
switch (flags)
{
case PCCARD_A_MEM_ATTR:
sc->mem[win].kind |= PCCARD_MEM_ATTR;
break;
case PCCARD_A_MEM_COM:
sc->mem[win].kind &= ~PCCARD_MEM_ATTR;
break;
case PCCARD_A_MEM_16BIT:
sc->mem[win].kind |= PCCARD_MEM_16BIT;
break;
case PCCARD_A_MEM_8BIT:
sc->mem[win].kind &= ~PCCARD_MEM_16BIT;
break;
}
exca_do_mem_map(sc, win);
return (0);
}
/*
* Given a resource, go ahead and unmap it if we can find it in the
* resrouce list that's used.
*/
int
exca_mem_unmap_res(struct exca_softc *sc, struct resource *res)
{
int win;
win = exca_mem_findmap(sc, res);
if (win < 0)
return (ENOENT);
exca_mem_unmap(sc, win);
return (0);
}
/*
* Set the offset of the memory. We use this for reading the CIS and
* frobbing the pccard's pccard registers (CCR, etc). Some drivers
* need to access arbitrary attribute and common memory during their
* initialization and operation.
*/
int
exca_mem_set_offset(struct exca_softc *sc, struct resource *res,
uint32_t cardaddr, uint32_t *deltap)
{
int win;
uint32_t delta;
win = exca_mem_findmap(sc, res);
if (win < 0) {
device_printf(sc->dev,
"set_memory_offset: specified resource not active\n");
return (ENOENT);
}
sc->mem[win].cardaddr = cardaddr & ~(EXCA_MEM_PAGESIZE - 1);
delta = cardaddr % EXCA_MEM_PAGESIZE;
if (deltap)
*deltap = delta;
sc->mem[win].realsize = sc->mem[win].size + delta +
EXCA_MEM_PAGESIZE - 1;
sc->mem[win].realsize = sc->mem[win].realsize -
(sc->mem[win].realsize % EXCA_MEM_PAGESIZE);
exca_do_mem_map(sc, win);
return (0);
}
/* I/O */
#define EXCA_IOINFO(NUM) { \
EXCA_IOADDR ## NUM ## _START_LSB, \
EXCA_IOADDR ## NUM ## _START_MSB, \
EXCA_IOADDR ## NUM ## _STOP_LSB, \
EXCA_IOADDR ## NUM ## _STOP_MSB, \
EXCA_ADDRWIN_ENABLE_IO ## NUM, \
EXCA_IOCTL_IO ## NUM ## _WAITSTATE \
| EXCA_IOCTL_IO ## NUM ## _ZEROWAIT \
| EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_MASK \
| EXCA_IOCTL_IO ## NUM ## _DATASIZE_MASK, \
{ \
EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_CARD, \
EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_DATASIZE \
| EXCA_IOCTL_IO ## NUM ## _DATASIZE_8BIT, \
EXCA_IOCTL_IO ## NUM ## _IOCS16SRC_DATASIZE \
| EXCA_IOCTL_IO ## NUM ## _DATASIZE_16BIT, \
} \
}
static struct io_map_index_st {
int start_lsb;
int start_msb;
int stop_lsb;
int stop_msb;
int ioenable;
int ioctlmask;
int ioctlbits[3]; /* indexed by PCCARD_WIDTH_* */
} io_map_index[] = {
EXCA_IOINFO(0),
EXCA_IOINFO(1),
};
#undef EXCA_IOINFO
static void
exca_do_io_map(struct exca_softc *sc, int win)
{
struct io_map_index_st *map;
struct pccard_io_handle *io;
map = &io_map_index[win];
io = &sc->io[win];
exca_putb(sc, map->start_lsb, io->addr & 0xff);
exca_putb(sc, map->start_msb, (io->addr >> 8) & 0xff);
exca_putb(sc, map->stop_lsb, (io->addr + io->size - 1) & 0xff);
exca_putb(sc, map->stop_msb, ((io->addr + io->size - 1) >> 8) & 0xff);
exca_clrb(sc, EXCA_IOCTL, map->ioctlmask);
exca_setb(sc, EXCA_IOCTL, map->ioctlbits[io->width]);
exca_setb(sc, EXCA_ADDRWIN_ENABLE, map->ioenable);
#ifdef EXCA_DEBUG
{
int r1, r2, r3, r4;
r1 = exca_getb(sc, map->start_msb);
r2 = exca_getb(sc, map->start_lsb);
r3 = exca_getb(sc, map->stop_msb);
r4 = exca_getb(sc, map->stop_lsb);
DPRINTF("exca_do_io_map window %d: %02x%02x %02x%02x "
"(%08x+%08x)\n", win, r1, r2, r3, r4,
io->addr, io->size);
}
#endif
}
int
exca_io_map(struct exca_softc *sc, int width, struct resource *r)
{
int win;
#ifdef EXCA_DEBUG
static char *width_names[] = { "auto", "io8", "io16"};
#endif
for (win=0; win < EXCA_IO_WINS; win++) {
if ((sc->ioalloc & (1 << win)) == 0) {
sc->ioalloc |= (1 << win);
break;
}
}
if (win >= EXCA_IO_WINS)
return (ENOSPC);
sc->io[win].iot = rman_get_bustag(r);
sc->io[win].ioh = rman_get_bushandle(r);
sc->io[win].addr = rman_get_start(r);
sc->io[win].size = rman_get_end(r) - sc->io[win].addr + 1;
sc->io[win].flags = 0;
sc->io[win].width = width;
DPRINTF("exca_io_map window %d %s port %x+%x\n",
win, width_names[width], sc->io[win].addr,
sc->io[win].size);
exca_do_io_map(sc, win);
return (0);
}
static void
exca_io_unmap(struct exca_softc *sc, int window)
{
if (window >= EXCA_IO_WINS)
panic("exca_io_unmap: window out of range");
exca_clrb(sc, EXCA_ADDRWIN_ENABLE, io_map_index[window].ioenable);
sc->ioalloc &= ~(1 << window);
sc->io[window].iot = 0;
sc->io[window].ioh = 0;
sc->io[window].addr = 0;
sc->io[window].size = 0;
sc->io[window].flags = 0;
sc->io[window].width = 0;
}
static int
exca_io_findmap(struct exca_softc *sc, struct resource *res)
{
int win;
for (win = 0; win < EXCA_IO_WINS; win++) {
if (sc->io[win].iot == rman_get_bustag(res) &&
sc->io[win].addr == rman_get_start(res) &&
sc->io[win].size == rman_get_size(res))
return (win);
}
return (-1);
}
int
exca_io_unmap_res(struct exca_softc *sc, struct resource *res)
{
int win;
win = exca_io_findmap(sc, res);
if (win < 0)
return (ENOENT);
exca_io_unmap(sc, win);
return (0);
}
/* Misc */
/*
* If interrupts are enabled, then we should be able to just wait for
* an interrupt routine to wake us up. Busy waiting shouldn't be
* necessary. Sadly, not all legacy ISA cards support an interrupt
* for the busy state transitions, at least according to their datasheets,
* so we busy wait a while here..
*/
static void
exca_wait_ready(struct exca_softc *sc)
{
int i;
DEVPRINTF(sc->dev, "exca_wait_ready: status 0x%02x\n",
exca_getb(sc, EXCA_IF_STATUS));
for (i = 0; i < 10000; i++) {
if (exca_getb(sc, EXCA_IF_STATUS) & EXCA_IF_STATUS_READY)
return;
DELAY(500);
}
device_printf(sc->dev, "ready never happened, status = %02x\n",
exca_getb(sc, EXCA_IF_STATUS));
}
/*
* Reset the card. Ideally, we'd do a lot of this via interrupts.
* However, many PC Cards will deassert the ready signal. This means
* that they are asserting an interrupt. This makes it hard to
* do anything but a busy wait here. One could argue that these
* such cards are broken, or that the bridge that allows this sort
* of interrupt through isn't quite what you'd want (and may be a standards
* violation). However, such arguing would leave a huge class of PC Cards
* and bridges out of reach for use in the system.
*
* Maybe I should reevaluate the above based on the power bug I fixed
* in OLDCARD.
*/
void
exca_reset(struct exca_softc *sc, device_t child)
{
int win;
/* enable socket i/o */
exca_setb(sc, EXCA_PWRCTL, EXCA_PWRCTL_OE);
exca_putb(sc, EXCA_INTR, EXCA_INTR_ENABLE);
/* hold reset for 30ms */
DELAY(30*1000);
/* clear the reset flag */
exca_setb(sc, EXCA_INTR, EXCA_INTR_RESET);
/* wait 20ms as per PC Card standard (r2.01) section 4.3.6 */
DELAY(20*1000);
exca_wait_ready(sc);
/* disable all address windows */
exca_putb(sc, EXCA_ADDRWIN_ENABLE, 0);
exca_setb(sc, EXCA_INTR, EXCA_INTR_CARDTYPE_IO);
DEVPRINTF(sc->dev, "card type is io\n");
/* reinstall all the memory and io mappings */
for (win = 0; win < EXCA_MEM_WINS; ++win)
if (sc->memalloc & (1 << win))
exca_do_mem_map(sc, win);
for (win = 0; win < EXCA_IO_WINS; ++win)
if (sc->ioalloc & (1 << win))
exca_do_io_map(sc, win);
}
/*
* Initialize the exca_softc data structure for the first time.
*/
void
exca_init(struct exca_softc *sc, device_t dev,
bus_space_tag_t bst, bus_space_handle_t bsh, uint32_t offset)
{
sc->dev = dev;
sc->memalloc = 0;
sc->ioalloc = 0;
sc->bst = bst;
sc->bsh = bsh;
sc->offset = offset;
sc->flags = 0;
sc->getb = exca_mem_getb;
sc->putb = exca_mem_putb;
}
/*
* Is this socket valid?
*/
static int
exca_valid_slot(struct exca_softc *exca)
{
uint8_t c;
/* Assume the worst */
exca->chipset = EXCA_BOGUS;
/*
* see if there's a PCMCIA controller here
* Intel PCMCIA controllers use 0x82 and 0x83
* IBM clone chips use 0x88 and 0x89, apparently
*/
c = exca_getb(exca, EXCA_IDENT);
DEVPRINTF(exca->dev, "Ident is %x\n", c);
if ((c & EXCA_IDENT_IFTYPE_MASK) != EXCA_IDENT_IFTYPE_MEM_AND_IO)
return (0);
if ((c & EXCA_IDENT_ZERO) != 0)
return (0);
switch (c & EXCA_IDENT_REV_MASK) {
/*
* 82365 or clones.
*/
case EXCA_IDENT_REV_I82365SLR0:
case EXCA_IDENT_REV_I82365SLR1:
exca->chipset = EXCA_I82365;
/*
* Check for Vadem chips by unlocking their extra
* registers and looking for valid ID. Bit 3 in
* the ID register is normally 0, except when
* EXCA_VADEMREV is set. Other bridges appear
* to ignore this frobbing.
*/
bus_space_write_1(exca->bst, exca->bsh, EXCA_REG_INDEX,
EXCA_VADEM_COOKIE1);
bus_space_write_1(exca->bst, exca->bsh, EXCA_REG_INDEX,
EXCA_VADEM_COOKIE2);
exca_setb(exca, EXCA_VADEM_VMISC, EXCA_VADEM_REV);
c = exca_getb(exca, EXCA_IDENT);
if (c & 0x08) {
switch (c & 7) {
case 1:
exca->chipset = EXCA_VG365;
break;
case 2:
exca->chipset = EXCA_VG465;
break;
case 3:
exca->chipset = EXCA_VG468;
break;
default:
exca->chipset = EXCA_VG469;
break;
}
exca_clrb(exca, EXCA_VADEM_VMISC, EXCA_VADEM_REV);
break;
}
/*
* Check for RICOH RF5C[23]96 PCMCIA Controller
*/
c = exca_getb(exca, EXCA_RICOH_ID);
if (c == EXCA_RID_396) {
exca->chipset = EXCA_RF5C396;
break;
} else if (c == EXCA_RID_296) {
exca->chipset = EXCA_RF5C296;
break;
}
/*
* Check for Cirrus logic chips.
*/
exca_putb(exca, EXCA_CIRRUS_CHIP_INFO, 0);
c = exca_getb(exca, EXCA_CIRRUS_CHIP_INFO);
if ((c & EXCA_CIRRUS_CHIP_INFO_CHIP_ID) ==
EXCA_CIRRUS_CHIP_INFO_CHIP_ID) {
c = exca_getb(exca, EXCA_CIRRUS_CHIP_INFO);
if ((c & EXCA_CIRRUS_CHIP_INFO_CHIP_ID) == 0) {
if (c & EXCA_CIRRUS_CHIP_INFO_SLOTS)
exca->chipset = EXCA_PD6722;
else
exca->chipset = EXCA_PD6710;
break;
}
}
break;
case EXCA_IDENT_REV_I82365SLDF:
/*
* Intel i82365sl-DF step or maybe a vlsi 82c146
* we detected the vlsi case earlier, so if the controller
* isn't set, we know it is a i82365sl step D.
*/
exca->chipset = EXCA_I82365SL_DF;
break;
case EXCA_IDENT_REV_IBM1:
case EXCA_IDENT_REV_IBM2:
exca->chipset = EXCA_IBM;
break;
case EXCA_IDENT_REV_IBM_KING:
exca->chipset = EXCA_IBM_KING;
break;
default:
return (0);
}
return (1);
}
/*
* Probe the expected slots. We maybe should set the ID for each of these
* slots too while we're at it. But maybe that belongs to a separate
* function.
*
* The caller must guarantee that at least EXCA_NSLOTS are present in exca.
*/
int
exca_probe_slots(device_t dev, struct exca_softc *exca, bus_space_tag_t iot,
bus_space_handle_t ioh)
{
int err;
int i;
err = ENXIO;
for (i = 0; i < EXCA_NSLOTS; i++) {
exca_init(&exca[i], dev, iot, ioh, i * EXCA_SOCKET_SIZE);
exca->getb = exca_io_getb;
exca->putb = exca_io_putb;
if (exca_valid_slot(&exca[i])) {
device_set_desc(dev, chip_names[exca[i].chipset]);
err = 0;
}
}
return (err);
}
void
exca_insert(struct exca_softc *exca)
{
if (device_is_attached(exca->pccarddev)) {
if (CARD_ATTACH_CARD(exca->pccarddev) != 0)
device_printf(exca->dev,
"PC Card card activation failed\n");
} else {
device_printf(exca->dev,
"PC Card inserted, but no pccard bus.\n");
}
}
void
exca_removal(struct exca_softc *exca)
{
if (device_is_attached(exca->pccarddev))
CARD_DETACH_CARD(exca->pccarddev);
}
int
exca_activate_resource(struct exca_softc *exca, device_t child, int type,
int rid, struct resource *res)
{
int err;
if (rman_get_flags(res) & RF_ACTIVE)
return (0);
err = BUS_ACTIVATE_RESOURCE(device_get_parent(exca->dev), child,
type, rid, res);
if (err)
return (err);
switch (type) {
case SYS_RES_IOPORT:
err = exca_io_map(exca, PCCARD_WIDTH_AUTO, res);
break;
case SYS_RES_MEMORY:
err = exca_mem_map(exca, 0, res);
break;
}
if (err)
BUS_DEACTIVATE_RESOURCE(device_get_parent(exca->dev), child,
type, rid, res);
return (err);
}
int
exca_deactivate_resource(struct exca_softc *exca, device_t child, int type,
int rid, struct resource *res)
{
if (rman_get_flags(res) & RF_ACTIVE) { /* if activated */
switch (type) {
case SYS_RES_IOPORT:
if (exca_io_unmap_res(exca, res))
return (ENOENT);
break;
case SYS_RES_MEMORY:
if (exca_mem_unmap_res(exca, res))
return (ENOENT);
break;
}
}
return (BUS_DEACTIVATE_RESOURCE(device_get_parent(exca->dev), child,
type, rid, res));
}
#if 0
static struct resource *
exca_alloc_resource(struct exca_softc *sc, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, uint flags)
{
struct resource *res = NULL;
int tmp;
switch (type) {
case SYS_RES_MEMORY:
if (start < cbb_start_mem)
start = cbb_start_mem;
if (end < start)
end = start;
flags = (flags & ~RF_ALIGNMENT_MASK) |
rman_make_alignment_flags(CBB_MEMALIGN);
break;
case SYS_RES_IOPORT:
if (start < cbb_start_16_io)
start = cbb_start_16_io;
if (end < start)
end = start;
break;
case SYS_RES_IRQ:
tmp = rman_get_start(sc->irq_res);
if (start > tmp || end < tmp || count != 1) {
device_printf(child, "requested interrupt %ld-%ld,"
"count = %ld not supported by cbb\n",
start, end, count);
return (NULL);
}
flags |= RF_SHAREABLE;
start = end = rman_get_start(sc->irq_res);
break;
}
res = BUS_ALLOC_RESOURCE(up, child, type, rid,
start, end, count, flags & ~RF_ACTIVE);
if (res == NULL)
return (NULL);
cbb_insert_res(sc, res, type, *rid);
if (flags & RF_ACTIVE) {
if (bus_activate_resource(child, type, *rid, res) != 0) {
bus_release_resource(child, type, *rid, res);
return (NULL);
}
}
return (res);
}
static int
exca_release_resource(struct exca_softc *sc, device_t child, int type,
int rid, struct resource *res)
{
int error;
if (rman_get_flags(res) & RF_ACTIVE) {
error = bus_deactivate_resource(child, type, rid, res);
if (error != 0)
return (error);
}
cbb_remove_res(sc, res);
return (BUS_RELEASE_RESOURCE(device_get_parent(brdev), child,
type, rid, res));
}
#endif
static int
exca_modevent(module_t mod, int cmd, void *arg)
{
return 0;
}
DEV_MODULE(exca, exca_modevent, NULL);
MODULE_VERSION(exca, 1);