928 lines
26 KiB
C
928 lines
26 KiB
C
/*-
|
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* Copyright (c) 2002-2005 M Warner Losh. All rights reserved.
|
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*
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||
* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
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||
* 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
|
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software may be derived from NetBSD i82365.c and other files with
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* the following copyright:
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*
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* Copyright (c) 1997 Marc Horowitz. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
||
* modification, are permitted provided that the following conditions
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* are met:
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||
* 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.
|
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
|
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* This product includes software developed by Marc Horowitz.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* 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
|
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/condvar.h>
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#include <sys/errno.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/queue.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/conf.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/pccard/pccardreg.h>
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#include <dev/pccard/pccardvar.h>
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#include <dev/exca/excareg.h>
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#include <dev/exca/excavar.h>
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#ifdef EXCA_DEBUG
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#define DEVPRINTF(dev, fmt, args...) device_printf((dev), (fmt), ## args)
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#define DPRINTF(fmt, args...) printf(fmt, ## args)
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#else
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#define DEVPRINTF(dev, fmt, args...)
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#define DPRINTF(fmt, args...)
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#endif
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static const char *chip_names[] =
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{
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"CardBus socket",
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"Intel i82365SL-A/B or clone",
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"Intel i82365sl-DF step",
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"VLSI chip",
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"Cirrus Logic PD6710",
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"Cirrus logic PD6722",
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"Cirrus Logic PD6729",
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"Vadem 365",
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"Vadem 465",
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"Vadem 468",
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"Vadem 469",
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"Ricoh RF5C296",
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"Ricoh RF5C396",
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"IBM clone",
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"IBM KING PCMCIA Controller"
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};
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static exca_getb_fn exca_mem_getb;
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static exca_putb_fn exca_mem_putb;
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static exca_getb_fn exca_io_getb;
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static exca_putb_fn exca_io_putb;
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/* memory */
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#define EXCA_MEMINFO(NUM) { \
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EXCA_SYSMEM_ADDR ## NUM ## _START_LSB, \
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EXCA_SYSMEM_ADDR ## NUM ## _START_MSB, \
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EXCA_SYSMEM_ADDR ## NUM ## _STOP_LSB, \
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EXCA_SYSMEM_ADDR ## NUM ## _STOP_MSB, \
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EXCA_SYSMEM_ADDR ## NUM ## _WIN, \
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EXCA_CARDMEM_ADDR ## NUM ## _LSB, \
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EXCA_CARDMEM_ADDR ## NUM ## _MSB, \
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EXCA_ADDRWIN_ENABLE_MEM ## NUM, \
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}
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static struct mem_map_index_st {
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int sysmem_start_lsb;
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int sysmem_start_msb;
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int sysmem_stop_lsb;
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int sysmem_stop_msb;
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int sysmem_win;
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int cardmem_lsb;
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int cardmem_msb;
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int memenable;
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} mem_map_index[] = {
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EXCA_MEMINFO(0),
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EXCA_MEMINFO(1),
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EXCA_MEMINFO(2),
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EXCA_MEMINFO(3),
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EXCA_MEMINFO(4)
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};
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#undef EXCA_MEMINFO
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static uint8_t
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exca_mem_getb(struct exca_softc *sc, int reg)
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{
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return (bus_space_read_1(sc->bst, sc->bsh, sc->offset + reg));
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}
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static void
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exca_mem_putb(struct exca_softc *sc, int reg, uint8_t val)
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{
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bus_space_write_1(sc->bst, sc->bsh, sc->offset + reg, val);
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}
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static uint8_t
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exca_io_getb(struct exca_softc *sc, int reg)
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{
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bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_INDEX, reg + sc->offset);
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return (bus_space_read_1(sc->bst, sc->bsh, EXCA_REG_DATA));
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}
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static void
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exca_io_putb(struct exca_softc *sc, int reg, uint8_t val)
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{
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bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_INDEX, reg + sc->offset);
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bus_space_write_1(sc->bst, sc->bsh, EXCA_REG_DATA, val);
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}
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/*
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* Helper function. This will map the requested memory slot. We setup the
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* map before we call this function. This is used to initially force the
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* mapping, as well as later restore the mapping after it has been destroyed
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* in some fashion (due to a power event typically).
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*/
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static void
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exca_do_mem_map(struct exca_softc *sc, int win)
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{
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struct mem_map_index_st *map;
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struct pccard_mem_handle *mem;
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uint32_t offset;
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uint32_t mem16;
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uint32_t attrmem;
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map = &mem_map_index[win];
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mem = &sc->mem[win];
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mem16 = (mem->kind & PCCARD_MEM_16BIT) ?
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EXCA_SYSMEM_ADDRX_START_MSB_DATASIZE_16BIT : 0;
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attrmem = (mem->kind & PCCARD_MEM_ATTR) ?
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EXCA_CARDMEM_ADDRX_MSB_REGACTIVE_ATTR : 0;
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offset = ((mem->cardaddr >> EXCA_CARDMEM_ADDRX_SHIFT) -
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(mem->addr >> EXCA_SYSMEM_ADDRX_SHIFT)) & 0x3fff;
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exca_putb(sc, map->sysmem_start_lsb,
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mem->addr >> EXCA_SYSMEM_ADDRX_SHIFT);
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exca_putb(sc, map->sysmem_start_msb,
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((mem->addr >> (EXCA_SYSMEM_ADDRX_SHIFT + 8)) &
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EXCA_SYSMEM_ADDRX_START_MSB_ADDR_MASK) | mem16);
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exca_putb(sc, map->sysmem_stop_lsb,
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(mem->addr + mem->realsize - 1) >> EXCA_SYSMEM_ADDRX_SHIFT);
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exca_putb(sc, map->sysmem_stop_msb,
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(((mem->addr + mem->realsize - 1) >>
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(EXCA_SYSMEM_ADDRX_SHIFT + 8)) &
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EXCA_SYSMEM_ADDRX_STOP_MSB_ADDR_MASK) |
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EXCA_SYSMEM_ADDRX_STOP_MSB_WAIT2);
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exca_putb(sc, map->sysmem_win, mem->addr >> EXCA_MEMREG_WIN_SHIFT);
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exca_putb(sc, map->cardmem_lsb, offset & 0xff);
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exca_putb(sc, map->cardmem_msb, ((offset >> 8) &
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EXCA_CARDMEM_ADDRX_MSB_ADDR_MASK) | attrmem);
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DPRINTF("%s %d-bit memory",
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mem->kind & PCCARD_MEM_ATTR ? "attribute" : "common",
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mem->kind & PCCARD_MEM_16BIT ? 16 : 8);
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exca_setb(sc, EXCA_ADDRWIN_ENABLE, map->memenable |
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EXCA_ADDRWIN_ENABLE_MEMCS16);
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DELAY(100);
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#ifdef EXCA_DEBUG
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{
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int r1, r2, r3, r4, r5, r6, r7;
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r1 = exca_getb(sc, map->sysmem_start_msb);
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r2 = exca_getb(sc, map->sysmem_start_lsb);
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r3 = exca_getb(sc, map->sysmem_stop_msb);
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r4 = exca_getb(sc, map->sysmem_stop_lsb);
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r5 = exca_getb(sc, map->cardmem_msb);
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r6 = exca_getb(sc, map->cardmem_lsb);
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r7 = exca_getb(sc, map->sysmem_win);
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printf("exca_do_mem_map win %d: %#02x%#02x %#02x%#02x "
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"%#02x%#02x %#02x (%#08x+%#06x.%#06x*%#06x) flags %#x\n",
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win, r1, r2, r3, r4, r5, r6, r7,
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mem->addr, mem->size, mem->realsize,
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mem->cardaddr, mem->kind);
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}
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#endif
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}
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/*
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* public interface to map a resource. kind is the type of memory to
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* map (either common or attribute). Memory created via this interface
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* starts out at card address 0. Since the only way to set this is
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* to set it on a struct resource after it has been mapped, we're safe
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* in maping this assumption. Note that resources can be remapped using
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* exca_do_mem_map so that's how the card address can be set later.
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*/
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int
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exca_mem_map(struct exca_softc *sc, int kind, struct resource *res)
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{
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int win;
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for (win = 0; win < EXCA_MEM_WINS; win++) {
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if ((sc->memalloc & (1 << win)) == 0) {
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sc->memalloc |= (1 << win);
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break;
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}
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}
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if (win >= EXCA_MEM_WINS)
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return (ENOSPC);
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if (sc->flags & EXCA_HAS_MEMREG_WIN) {
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#ifdef _LP64
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if (rman_get_start(res) >> (EXCA_MEMREG_WIN_SHIFT + 8) != 0) {
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device_printf(sc->dev,
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"Does not support mapping above 4GB.");
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return (EINVAL);
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}
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#endif
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} else {
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if (rman_get_start(res) >> EXCA_MEMREG_WIN_SHIFT != 0) {
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device_printf(sc->dev,
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"Does not support mapping above 16M.");
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return (EINVAL);
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}
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}
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sc->mem[win].cardaddr = 0;
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sc->mem[win].memt = rman_get_bustag(res);
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sc->mem[win].memh = rman_get_bushandle(res);
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sc->mem[win].addr = rman_get_start(res);
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sc->mem[win].size = rman_get_end(res) - sc->mem[win].addr + 1;
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sc->mem[win].realsize = sc->mem[win].size + EXCA_MEM_PAGESIZE - 1;
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sc->mem[win].realsize = sc->mem[win].realsize -
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(sc->mem[win].realsize % EXCA_MEM_PAGESIZE);
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sc->mem[win].kind = kind;
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DPRINTF("exca_mem_map window %d bus %x+%x card addr %x\n",
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win, sc->mem[win].addr, sc->mem[win].size, sc->mem[win].cardaddr);
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exca_do_mem_map(sc, win);
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return (0);
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}
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||
|
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/*
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* Private helper function. This turns off a given memory map that is in
|
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* use. We do this by just clearing the enable bit in the pcic. If we needed
|
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* to make memory unmapping/mapping pairs faster, we would have to store
|
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* more state information about the pcic and then use that to intelligently
|
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* to the map/unmap. However, since we don't do that sort of thing often
|
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* (generally just at configure time), it isn't a case worth optimizing.
|
||
*/
|
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static void
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exca_mem_unmap(struct exca_softc *sc, int window)
|
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{
|
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if (window < 0 || window >= EXCA_MEM_WINS)
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panic("exca_mem_unmap: window out of range");
|
||
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exca_clrb(sc, EXCA_ADDRWIN_ENABLE, mem_map_index[window].memenable);
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sc->memalloc &= ~(1 << window);
|
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}
|
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|
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/*
|
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* Find the map that we're using to hold the resource. This works well
|
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* so long as the client drivers don't do silly things like map the same
|
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* area mutliple times, or map both common and attribute memory at the
|
||
* same time. This latter restriction is a bug. We likely should just
|
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* store a pointer to the res in the mem[x] data structure.
|
||
*/
|
||
static int
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exca_mem_findmap(struct exca_softc *sc, struct resource *res)
|
||
{
|
||
int win;
|
||
|
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for (win = 0; win < EXCA_MEM_WINS; win++) {
|
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if (sc->mem[win].memt == rman_get_bustag(res) &&
|
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sc->mem[win].addr == rman_get_start(res) &&
|
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sc->mem[win].size == rman_get_size(res))
|
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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
|
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exca_mem_set_flags(struct exca_softc *sc, struct resource *res, uint32_t flags)
|
||
{
|
||
int win;
|
||
|
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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);
|