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      1  1.36    dyoung /*	$NetBSD: cardbus_map.c,v 1.36 2010/03/15 19:48:31 dyoung Exp $	*/
      2   1.1      haya 
      3   1.1      haya /*
      4   1.8      haya  * Copyright (c) 1999 and 2000
      5   1.1      haya  *      HAYAKAWA Koichi.  All rights reserved.
      6   1.1      haya  *
      7   1.1      haya  * Redistribution and use in source and binary forms, with or without
      8   1.1      haya  * modification, are permitted provided that the following conditions
      9   1.1      haya  * are met:
     10   1.1      haya  * 1. Redistributions of source code must retain the above copyright
     11   1.1      haya  *    notice, this list of conditions and the following disclaimer.
     12   1.1      haya  * 2. Redistributions in binary form must reproduce the above copyright
     13   1.1      haya  *    notice, this list of conditions and the following disclaimer in the
     14   1.1      haya  *    documentation and/or other materials provided with the distribution.
     15   1.1      haya  *
     16   1.1      haya  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17   1.1      haya  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     18   1.1      haya  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     19   1.1      haya  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     20   1.1      haya  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     21   1.1      haya  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     22   1.1      haya  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23   1.1      haya  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     24   1.1      haya  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     25   1.1      haya  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26   1.1      haya  * POSSIBILITY OF SUCH DAMAGE.
     27   1.1      haya  */
     28   1.1      haya 
     29  1.13     lukem #include <sys/cdefs.h>
     30  1.36    dyoung __KERNEL_RCSID(0, "$NetBSD: cardbus_map.c,v 1.36 2010/03/15 19:48:31 dyoung Exp $");
     31   1.1      haya 
     32   1.1      haya #include <sys/param.h>
     33   1.1      haya #include <sys/systm.h>
     34   1.1      haya #include <sys/device.h>
     35   1.1      haya 
     36  1.25        ad #include <sys/bus.h>
     37   1.1      haya 
     38   1.1      haya #include <dev/cardbus/cardbusvar.h>
     39   1.1      haya 
     40   1.1      haya #include <dev/pci/pcireg.h>	/* XXX */
     41   1.1      haya 
     42   1.1      haya #if defined DEBUG && !defined CARDBUS_MAP_DEBUG
     43   1.1      haya #define CARDBUS_MAP_DEBUG
     44   1.1      haya #endif
     45   1.1      haya 
     46   1.1      haya #if defined CARDBUS_MAP_DEBUG
     47   1.1      haya #define STATIC
     48   1.1      haya #define DPRINTF(a) printf a
     49   1.1      haya #else
     50   1.1      haya #define STATIC static
     51   1.1      haya #define DPRINTF(a)
     52   1.1      haya #endif
     53   1.1      haya 
     54   1.1      haya 
     55  1.15     perry static int cardbus_io_find(cardbus_chipset_tag_t, cardbus_function_tag_t,
     56  1.32    dyoung 				pcitag_t, int, pcireg_t,
     57  1.15     perry 				bus_addr_t *, bus_size_t *, int *);
     58  1.15     perry static int cardbus_mem_find(cardbus_chipset_tag_t, cardbus_function_tag_t,
     59  1.32    dyoung 				 pcitag_t, int, pcireg_t,
     60  1.15     perry 				 bus_addr_t *, bus_size_t *, int *);
     61   1.1      haya 
     62   1.1      haya /*
     63   1.1      haya  * static int cardbus_io_find(cardbus_chipset_tag_t cc,
     64  1.32    dyoung  *			      cardbus_function_tag_t cf, pcitag_t tag,
     65  1.32    dyoung  *			      int reg, pcireg_t type, bus_addr_t *basep,
     66   1.1      haya  *			      bus_size_t *sizep, int *flagsp)
     67  1.11       wiz  * This code is stolen from sys/dev/pci_map.c.
     68   1.1      haya  */
     69   1.1      haya static int
     70  1.23  christos cardbus_io_find(
     71  1.23  christos     cardbus_chipset_tag_t cc,
     72  1.23  christos     cardbus_function_tag_t cf,
     73  1.32    dyoung     pcitag_t tag,
     74  1.23  christos     int reg,
     75  1.32    dyoung     pcireg_t type,
     76  1.23  christos     bus_addr_t *basep,
     77  1.23  christos     bus_size_t *sizep,
     78  1.23  christos     int *flagsp)
     79   1.1      haya {
     80  1.32    dyoung 	pcireg_t address, mask;
     81   1.8      haya 	int s;
     82   1.1      haya 
     83   1.8      haya 	/* EXT ROM is able to map on memory space ONLY. */
     84   1.8      haya 	if (reg == CARDBUS_ROM_REG) {
     85   1.8      haya 		return 1;
     86   1.8      haya 	}
     87   1.8      haya 
     88   1.8      haya 	if(reg < PCI_MAPREG_START || reg >= PCI_MAPREG_END || (reg & 3)) {
     89   1.8      haya 		panic("cardbus_io_find: bad request");
     90   1.8      haya 	}
     91   1.8      haya 
     92   1.8      haya 	/*
     93   1.8      haya 	 * Section 6.2.5.1, `Address Maps', tells us that:
     94   1.8      haya 	 *
     95   1.8      haya 	 * 1) The builtin software should have already mapped the device in a
     96   1.8      haya 	 * reasonable way.
     97   1.8      haya 	 *
     98   1.8      haya 	 * 2) A device which wants 2^n bytes of memory will hardwire the bottom
     99   1.8      haya 	 * n bits of the address to 0.  As recommended, we write all 1s and see
    100   1.8      haya 	 * what we get back.
    101   1.8      haya 	 */
    102   1.8      haya 	s = splhigh();
    103   1.8      haya 	address = cardbus_conf_read(cc, cf, tag, reg);
    104   1.8      haya 	cardbus_conf_write(cc, cf, tag, reg, 0xffffffff);
    105   1.8      haya 	mask = cardbus_conf_read(cc, cf, tag, reg);
    106   1.8      haya 	cardbus_conf_write(cc, cf, tag, reg, address);
    107   1.8      haya 	splx(s);
    108   1.8      haya 
    109   1.8      haya 	if (PCI_MAPREG_TYPE(address) != PCI_MAPREG_TYPE_IO) {
    110   1.8      haya 		printf("cardbus_io_find: expected type i/o, found mem\n");
    111   1.8      haya 		return 1;
    112   1.8      haya 	}
    113   1.8      haya 
    114   1.8      haya 	if (PCI_MAPREG_IO_SIZE(mask) == 0) {
    115   1.8      haya 		printf("cardbus_io_find: void region\n");
    116   1.8      haya 		return 1;
    117   1.8      haya 	}
    118   1.8      haya 
    119   1.8      haya 	if (basep != 0) {
    120   1.8      haya 		*basep = PCI_MAPREG_IO_ADDR(address);
    121   1.8      haya 	}
    122   1.8      haya 	if (sizep != 0) {
    123   1.8      haya 		*sizep = PCI_MAPREG_IO_SIZE(mask);
    124   1.8      haya 	}
    125   1.8      haya 	if (flagsp != 0) {
    126   1.8      haya 		*flagsp = 0;
    127   1.8      haya 	}
    128   1.1      haya 
    129   1.8      haya 	return 0;
    130   1.1      haya }
    131   1.1      haya 
    132   1.1      haya 
    133   1.1      haya 
    134   1.1      haya /*
    135   1.1      haya  * static int cardbus_mem_find(cardbus_chipset_tag_t cc,
    136  1.32    dyoung  *			       cardbus_function_tag_t cf, pcitag_t tag,
    137  1.32    dyoung  *			       int reg, pcireg_t type, bus_addr_t *basep,
    138   1.1      haya  *			       bus_size_t *sizep, int *flagsp)
    139  1.11       wiz  * This code is stolen from sys/dev/pci_map.c.
    140   1.1      haya  */
    141   1.1      haya static int
    142  1.32    dyoung cardbus_mem_find(cardbus_chipset_tag_t cc, cardbus_function_tag_t cf, pcitag_t tag, int reg, pcireg_t type, bus_addr_t *basep, bus_size_t *sizep, int *flagsp)
    143   1.1      haya {
    144  1.32    dyoung 	pcireg_t address, mask;
    145   1.8      haya 	int s;
    146   1.1      haya 
    147  1.16     perry 	if (reg != CARDBUS_ROM_REG &&
    148   1.8      haya 	    (reg < PCI_MAPREG_START || reg >= PCI_MAPREG_END || (reg & 3))) {
    149   1.8      haya 		panic("cardbus_mem_find: bad request");
    150   1.8      haya 	}
    151   1.8      haya 
    152   1.8      haya 	/*
    153   1.8      haya 	 * Section 6.2.5.1, `Address Maps', tells us that:
    154   1.8      haya 	 *
    155   1.8      haya 	 * 1) The builtin software should have already mapped the device in a
    156   1.8      haya 	 * reasonable way.
    157   1.8      haya 	 *
    158   1.8      haya 	 * 2) A device which wants 2^n bytes of memory will hardwire the bottom
    159   1.8      haya 	 * n bits of the address to 0.  As recommended, we write all 1s and see
    160   1.8      haya 	 * what we get back.
    161   1.8      haya 	 */
    162   1.8      haya 	s = splhigh();
    163   1.8      haya 	address = cardbus_conf_read(cc, cf, tag, reg);
    164   1.8      haya 	cardbus_conf_write(cc, cf, tag, reg, 0xffffffff);
    165   1.8      haya 	mask = cardbus_conf_read(cc, cf, tag, reg);
    166   1.8      haya 	cardbus_conf_write(cc, cf, tag, reg, address);
    167   1.8      haya 	splx(s);
    168   1.8      haya 
    169   1.8      haya 	if (reg != CARDBUS_ROM_REG) {
    170   1.8      haya 		/* memory space BAR */
    171   1.8      haya 
    172   1.8      haya 		if (PCI_MAPREG_TYPE(address) != PCI_MAPREG_TYPE_MEM) {
    173   1.8      haya 			printf("cardbus_mem_find: expected type mem, found i/o\n");
    174   1.8      haya 			return 1;
    175   1.8      haya 		}
    176   1.8      haya 		if (PCI_MAPREG_MEM_TYPE(address) != PCI_MAPREG_MEM_TYPE(type)) {
    177   1.8      haya 			printf("cardbus_mem_find: expected mem type %08x, found %08x\n",
    178   1.8      haya 			    PCI_MAPREG_MEM_TYPE(type),
    179   1.8      haya 			    PCI_MAPREG_MEM_TYPE(address));
    180   1.8      haya 			return 1;
    181   1.8      haya 		}
    182   1.8      haya 	}
    183   1.8      haya 
    184   1.8      haya 	if (PCI_MAPREG_MEM_SIZE(mask) == 0) {
    185   1.8      haya 		printf("cardbus_mem_find: void region\n");
    186   1.8      haya 		return 1;
    187   1.8      haya 	}
    188   1.8      haya 
    189   1.8      haya 	switch (PCI_MAPREG_MEM_TYPE(address)) {
    190   1.8      haya 	case PCI_MAPREG_MEM_TYPE_32BIT:
    191   1.8      haya 	case PCI_MAPREG_MEM_TYPE_32BIT_1M:
    192   1.8      haya 		break;
    193   1.8      haya 	case PCI_MAPREG_MEM_TYPE_64BIT:
    194   1.8      haya 		printf("cardbus_mem_find: 64-bit memory mapping register\n");
    195   1.8      haya 		return 1;
    196   1.8      haya 	default:
    197   1.8      haya 		printf("cardbus_mem_find: reserved mapping register type\n");
    198   1.8      haya 		return 1;
    199   1.8      haya 	}
    200   1.8      haya 
    201   1.8      haya 	if (basep != 0) {
    202   1.8      haya 		*basep = PCI_MAPREG_MEM_ADDR(address);
    203   1.8      haya 	}
    204   1.8      haya 	if (sizep != 0) {
    205   1.8      haya 		*sizep = PCI_MAPREG_MEM_SIZE(mask);
    206   1.8      haya 	}
    207   1.8      haya 	if (flagsp != 0) {
    208   1.8      haya 		*flagsp = PCI_MAPREG_MEM_PREFETCHABLE(address) ?
    209   1.8      haya 		    BUS_SPACE_MAP_PREFETCHABLE : 0;
    210   1.8      haya 	}
    211  1.16     perry 
    212   1.8      haya 	return 0;
    213   1.1      haya }
    214   1.1      haya 
    215   1.1      haya 
    216   1.1      haya 
    217   1.1      haya 
    218   1.1      haya /*
    219  1.32    dyoung  * int cardbus_mapreg_map(struct cardbus_softc *, int, int, pcireg_t,
    220   1.1      haya  *			  int bus_space_tag_t *, bus_space_handle_t *,
    221   1.1      haya  *			  bus_addr_t *, bus_size_t *)
    222   1.1      haya  *    This function maps bus-space on the value of Base Address
    223   1.1      haya  *   Register (BAR) indexed by the argument `reg' (the second argument).
    224   1.1      haya  *   When the value of the BAR is not valid, such as 0x00000000, a new
    225   1.1      haya  *   address should be allocated for the BAR and new address values is
    226   1.1      haya  *   written on the BAR.
    227   1.1      haya  */
    228   1.1      haya int
    229  1.32    dyoung cardbus_mapreg_map(struct cardbus_softc *sc, int func, int reg, pcireg_t type, int busflags, bus_space_tag_t *tagp, bus_space_handle_t *handlep, bus_addr_t *basep, bus_size_t *sizep)
    230   1.1      haya {
    231   1.8      haya 	cardbus_chipset_tag_t cc = sc->sc_cc;
    232   1.8      haya 	cardbus_function_tag_t cf = sc->sc_cf;
    233   1.8      haya 	bus_space_tag_t bustag;
    234   1.8      haya 	rbus_tag_t rbustag;
    235  1.20    martin 	bus_space_handle_t handle;
    236   1.8      haya 	bus_addr_t base;
    237   1.8      haya 	bus_size_t size;
    238   1.8      haya 	int flags;
    239   1.8      haya 	int status = 0;
    240  1.32    dyoung 	pcitag_t tag;
    241   1.1      haya 
    242  1.21       mrg 	size = 0;	/* XXX gcc */
    243  1.21       mrg 	flags = 0;	/* XXX gcc */
    244  1.21       mrg 
    245  1.22     itohy 	tag = cardbus_make_tag(cc, cf, sc->sc_bus, func);
    246   1.1      haya 
    247  1.27  drochner 	DPRINTF(("cardbus_mapreg_map called: %s %x\n", device_xname(sc->sc_dev),
    248   1.1      haya 	   type));
    249   1.1      haya 
    250   1.8      haya 	if (PCI_MAPREG_TYPE(type) == PCI_MAPREG_TYPE_IO) {
    251   1.8      haya 		if (cardbus_io_find(cc, cf, tag, reg, type, &base, &size, &flags)) {
    252   1.8      haya 			status = 1;
    253   1.8      haya 		}
    254   1.8      haya 		bustag = sc->sc_iot;
    255   1.8      haya 		rbustag = sc->sc_rbus_iot;
    256   1.8      haya 	} else {
    257   1.8      haya 		if (cardbus_mem_find(cc, cf, tag, reg, type, &base, &size, &flags)){
    258   1.8      haya 			status = 1;
    259   1.8      haya 		}
    260   1.8      haya 		bustag = sc->sc_memt;
    261   1.8      haya 		rbustag = sc->sc_rbus_memt;
    262   1.8      haya 	}
    263   1.8      haya 	if (status == 0) {
    264   1.8      haya 		bus_addr_t mask = size - 1;
    265   1.8      haya 		if (base != 0) {
    266   1.8      haya 			mask = 0xffffffff;
    267   1.8      haya 		}
    268   1.8      haya 		if ((*cf->cardbus_space_alloc)(cc, rbustag, base, size, mask,
    269   1.8      haya 		    size, busflags | flags, &base, &handle)) {
    270   1.8      haya 			panic("io alloc");
    271   1.8      haya 		}
    272   1.8      haya 	}
    273   1.8      haya 	cardbus_conf_write(cc, cf, tag, reg, base);
    274   1.1      haya 
    275  1.12       jmc 	DPRINTF(("cardbus_mapreg_map: physaddr %lx\n", (unsigned long)base));
    276   1.1      haya 
    277   1.8      haya 	if (tagp != 0) {
    278   1.8      haya 		*tagp = bustag;
    279   1.8      haya 	}
    280   1.8      haya 	if (handlep != 0) {
    281   1.8      haya 		*handlep = handle;
    282   1.8      haya 	}
    283   1.8      haya 	if (basep != 0) {
    284   1.8      haya 		*basep = base;
    285   1.8      haya 	}
    286   1.8      haya 	if (sizep != 0) {
    287   1.8      haya 		*sizep = size;
    288   1.8      haya 	}
    289   1.4      haya 
    290   1.8      haya 	return 0;
    291   1.1      haya }
    292   1.1      haya 
    293   1.1      haya 
    294   1.1      haya 
    295   1.1      haya 
    296   1.1      haya 
    297   1.8      haya /*
    298   1.8      haya  * int cardbus_mapreg_unmap(struct cardbus_softc *sc, int func, int reg,
    299   1.8      haya  *			    bus_space_tag_t tag, bus_space_handle_t handle,
    300   1.8      haya  *			    bus_size_t size)
    301   1.8      haya  *
    302   1.8      haya  *   This function releases bus-space region and close memory or io
    303   1.8      haya  *   window on the bridge.
    304   1.8      haya  *
    305   1.8      haya  *  Arguments:
    306   1.8      haya  *   struct cardbus_softc *sc; the pointer to the device structure of cardbus.
    307   1.8      haya  *   int func; the number of function on the device.
    308   1.8      haya  *   int reg; the offset of BAR register.
    309   1.8      haya  */
    310   1.8      haya int
    311  1.29       dsl cardbus_mapreg_unmap(struct cardbus_softc *sc, int func, int reg, bus_space_tag_t tag, bus_space_handle_t handle, bus_size_t size)
    312   1.8      haya {
    313   1.8      haya 	cardbus_chipset_tag_t cc = sc->sc_cc;
    314   1.8      haya 	cardbus_function_tag_t cf = sc->sc_cf;
    315   1.8      haya 	int st = 1;
    316  1.32    dyoung 	pcitag_t cardbustag;
    317  1.10   mycroft 	rbus_tag_t rbustag;
    318   1.8      haya 
    319   1.8      haya 	if (sc->sc_iot == tag) {
    320   1.8      haya 		/* bus space is io space */
    321  1.27  drochner 		DPRINTF(("%s: unmap i/o space\n", device_xname(sc->sc_dev)));
    322  1.10   mycroft 		rbustag = sc->sc_rbus_iot;
    323  1.10   mycroft 	} else if (sc->sc_memt == tag) {
    324   1.8      haya 		/* bus space is memory space */
    325  1.27  drochner 		DPRINTF(("%s: unmap mem space\n", device_xname(sc->sc_dev)));
    326  1.10   mycroft 		rbustag = sc->sc_rbus_memt;
    327   1.8      haya 	} else {
    328   1.8      haya 		return 1;
    329   1.8      haya 	}
    330   1.8      haya 
    331  1.17  drochner 	cardbustag = cardbus_make_tag(cc, cf, sc->sc_bus, func);
    332   1.8      haya 
    333  1.10   mycroft 	cardbus_conf_write(cc, cf, cardbustag, reg, 0);
    334   1.8      haya 
    335  1.10   mycroft 	(*cf->cardbus_space_free)(cc, rbustag, handle, size);
    336   1.8      haya 
    337   1.8      haya 	return st;
    338   1.8      haya }
    339