2 * FreeBSD, PCI product support functions
4 * Copyright (c) 1995-2001 Justin T. Gibbs
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * Alternatively, this software may be distributed under the terms of the
17 * GNU Public License ("GPL").
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/ahd_pci.c#17 $
33 * $FreeBSD: src/sys/dev/aic7xxx/ahd_pci.c,v 1.19 2005/09/22 04:56:59 gibbs Exp $
34 * $DragonFly: src/sys/dev/disk/aic7xxx/ahd_pci.c,v 1.13 2008/05/18 20:30:21 pavalos Exp $
37 #include "aic79xx_osm.h"
39 static int ahd_pci_probe(device_t dev
);
40 static int ahd_pci_attach(device_t dev
);
42 static device_method_t ahd_pci_device_methods
[] = {
43 /* Device interface */
44 DEVMETHOD(device_probe
, ahd_pci_probe
),
45 DEVMETHOD(device_attach
, ahd_pci_attach
),
46 DEVMETHOD(device_detach
, ahd_detach
),
50 static driver_t ahd_pci_driver
= {
52 ahd_pci_device_methods
,
53 sizeof(struct ahd_softc
)
56 static devclass_t ahd_devclass
;
58 DRIVER_MODULE(ahd
, pci
, ahd_pci_driver
, ahd_devclass
, 0, 0);
59 DRIVER_MODULE(ahd
, cardbus
, ahd_pci_driver
, ahd_devclass
, 0, 0);
60 MODULE_DEPEND(ahd_pci
, ahd
, 1, 1, 1);
61 MODULE_VERSION(ahd_pci
, 1);
64 ahd_pci_probe(device_t dev
)
66 struct ahd_pci_identity
*entry
;
68 entry
= ahd_find_pci_device(dev
);
70 device_set_desc(dev
, entry
->name
);
71 return (BUS_PROBE_DEFAULT
);
77 ahd_pci_attach(device_t dev
)
79 struct ahd_pci_identity
*entry
;
80 struct ahd_softc
*ahd
;
84 entry
= ahd_find_pci_device(dev
);
89 * Allocate a softc for this card and
90 * set it up for attachment by our
91 * common detect routine.
93 name
= kmalloc(strlen(device_get_nameunit(dev
)) + 1, M_DEVBUF
, M_INTWAIT
);
94 strcpy(name
, device_get_nameunit(dev
));
95 ahd
= ahd_alloc(dev
, name
);
99 ahd_set_unit(ahd
, device_get_unit(dev
));
102 * Should we bother disabling 39Bit addressing
103 * based on installed memory?
105 if (sizeof(bus_addr_t
) > 4)
106 ahd
->flags
|= AHD_39BIT_ADDRESSING
;
108 /* Allocate a dmatag for our SCB DMA maps */
109 /* XXX Should be a child of the PCI bus dma tag */
110 error
= aic_dma_tag_create(ahd
, /*parent*/NULL
, /*alignment*/1,
112 (ahd
->flags
& AHD_39BIT_ADDRESSING
)
114 : BUS_SPACE_MAXADDR_32BIT
,
115 /*highaddr*/BUS_SPACE_MAXADDR
,
116 /*filter*/NULL
, /*filterarg*/NULL
,
117 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT
,
118 /*nsegments*/AHD_NSEG
,
119 /*maxsegsz*/AHD_MAXTRANSFER_SIZE
,
124 kprintf("ahd_pci_attach: Could not allocate DMA tag "
125 "- error %d\n", error
);
129 ahd
->dev_softc
= dev
;
130 error
= ahd_pci_config(ahd
, entry
);
141 ahd_pci_map_registers(struct ahd_softc
*ahd
)
143 struct resource
*regs
;
144 struct resource
*regs2
;
151 command
= aic_pci_read_config(ahd
->dev_softc
, PCIR_COMMAND
, /*bytes*/1);
157 /* Retrieve the per-device 'allow_memio' hint */
158 if (resource_int_value(device_get_name(ahd
->dev_softc
),
159 device_get_unit(ahd
->dev_softc
),
160 "allow_memio", &allow_memio
) != 0) {
162 device_printf(ahd
->dev_softc
,
163 "Defaulting to MEMIO on\n");
167 if ((command
& PCIM_CMD_MEMEN
) != 0
168 && (ahd
->bugs
& AHD_PCIX_MMAPIO_BUG
) == 0
169 && allow_memio
!= 0) {
171 regs_type
= SYS_RES_MEMORY
;
172 regs_id
= AHD_PCI_MEMADDR
;
173 regs
= bus_alloc_resource_any(ahd
->dev_softc
, regs_type
,
174 ®s_id
, RF_ACTIVE
);
178 ahd
->tags
[0] = rman_get_bustag(regs
);
179 ahd
->bshs
[0] = rman_get_bushandle(regs
);
180 ahd
->tags
[1] = ahd
->tags
[0];
181 error
= bus_space_subregion(ahd
->tags
[0], ahd
->bshs
[0],
186 * Do a quick test to see if memory mapped
187 * I/O is functioning correctly.
190 || ahd_pci_test_register_access(ahd
) != 0) {
191 device_printf(ahd
->dev_softc
,
192 "PCI Device %d:%d:%d failed memory "
193 "mapped test. Using PIO.\n",
194 aic_get_pci_bus(ahd
->dev_softc
),
195 aic_get_pci_slot(ahd
->dev_softc
),
196 aic_get_pci_function(ahd
->dev_softc
));
197 bus_release_resource(ahd
->dev_softc
, regs_type
,
201 command
&= ~PCIM_CMD_PORTEN
;
202 aic_pci_write_config(ahd
->dev_softc
,
204 command
, /*bytes*/1);
208 if (regs
== NULL
&& (command
& PCIM_CMD_PORTEN
) != 0) {
209 regs_type
= SYS_RES_IOPORT
;
210 regs_id
= AHD_PCI_IOADDR0
;
211 regs
= bus_alloc_resource_any(ahd
->dev_softc
, regs_type
,
212 ®s_id
, RF_ACTIVE
);
214 device_printf(ahd
->dev_softc
,
215 "can't allocate register resources\n");
218 ahd
->tags
[0] = rman_get_bustag(regs
);
219 ahd
->bshs
[0] = rman_get_bushandle(regs
);
221 /* And now the second BAR */
222 regs_id2
= AHD_PCI_IOADDR1
;
223 regs2
= bus_alloc_resource_any(ahd
->dev_softc
, regs_type
,
224 ®s_id2
, RF_ACTIVE
);
226 device_printf(ahd
->dev_softc
,
227 "can't allocate register resources\n");
230 ahd
->tags
[1] = rman_get_bustag(regs2
);
231 ahd
->bshs
[1] = rman_get_bushandle(regs2
);
232 command
&= ~PCIM_CMD_MEMEN
;
233 aic_pci_write_config(ahd
->dev_softc
, PCIR_COMMAND
,
234 command
, /*bytes*/1);
235 ahd
->platform_data
->regs_res_type
[1] = regs_type
;
236 ahd
->platform_data
->regs_res_id
[1] = regs_id2
;
237 ahd
->platform_data
->regs
[1] = regs2
;
239 ahd
->platform_data
->regs_res_type
[0] = regs_type
;
240 ahd
->platform_data
->regs_res_id
[0] = regs_id
;
241 ahd
->platform_data
->regs
[0] = regs
;
246 ahd_pci_map_int(struct ahd_softc
*ahd
)
251 ahd
->platform_data
->irq
=
252 bus_alloc_resource_any(ahd
->dev_softc
, SYS_RES_IRQ
, &zero
,
253 RF_ACTIVE
| RF_SHAREABLE
);
254 if (ahd
->platform_data
->irq
== NULL
)
256 ahd
->platform_data
->irq_res_type
= SYS_RES_IRQ
;
257 return (ahd_map_int(ahd
));