2 * Copyright (c) 1996 - 2001 John Hay.
3 * Copyright (c) 1996 SDL Communications, Inc.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the names of any co-contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * $FreeBSD: src/sys/dev/sr/if_sr_pci.c,v 1.15.2.1 2002/06/17 15:10:58 jhay Exp $
31 * $DragonFly: src/sys/dev/netif/sr/if_sr_pci.c,v 1.4 2005/08/29 10:19:52 sephe Exp $
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/malloc.h>
40 #include <machine/bus.h>
41 #include <machine/resource.h>
42 #include <machine/bus_pio.h>
43 #include <machine/bus_memio.h>
46 #include <bus/pci/pcivar.h>
47 #include <machine/md_var.h>
49 #include "../ic_layer/hd64570.h"
50 #include "if_srregs.h"
56 static int sr_pci_probe(device_t);
57 static int sr_pci_attach(device_t);
59 static device_method_t sr_pci_methods[] = {
60 /* Device interface */
61 DEVMETHOD(device_probe, sr_pci_probe),
62 DEVMETHOD(device_attach, sr_pci_attach),
63 DEVMETHOD(device_detach, sr_detach),
67 static driver_t sr_pci_driver = {
70 sizeof(struct sr_hardc),
73 DRIVER_MODULE(if_sr, pci, sr_pci_driver, sr_devclass, 0, 0);
75 static u_int src_get8_mem(u_int base, u_int off);
76 static u_int src_get16_mem(u_int base, u_int off);
77 static void src_put8_mem(u_int base, u_int off, u_int val);
78 static void src_put16_mem(u_int base, u_int off, u_int val);
81 sr_pci_probe(device_t device)
83 u_int32_t type = pci_get_devid(device);
87 device_set_desc(device, "RISCom/N2pci");
93 * XXX This can probably be removed sometime.
95 device_set_desc(device, "RISCom/N2pci (old id)");
105 sr_pci_attach(device_t device)
111 hc = (struct sr_hardc *)device_get_softc(device);
113 if (sr_allocate_plx_memory(device, 0x10, 1))
116 if (sr_allocate_memory(device, 0x18, 1))
119 if (sr_allocate_irq(device, 0, 1))
122 hc->plx_base = rman_get_virtual(hc->res_plx_memory);
123 hc->sca_base = (vm_offset_t)rman_get_virtual(hc->res_memory);
125 hc->cunit = device_get_unit(device);
129 * Configure the PLX. This is magic. I'm doing it just like I'm told
133 * 0x00 - Map Range - Mem-mapped to locate anywhere
134 * 0x04 - Re-Map - PCI address decode enable
135 * 0x18 - Bus Region - 32-bit bus, ready enable
136 * 0x1c - Master Range - include all 16 MB
137 * 0x20 - Master RAM - Map SCA Base at 0
138 * 0x28 - Master Remap - direct master memory enable
139 * 0x68 - Interrupt - Enable interrupt (0 to disable)
141 * Note: This is "cargo cult" stuff. - jrc
143 *((u_int *)(hc->plx_base + 0x00)) = 0xfffff000;
144 *((u_int *)(hc->plx_base + 0x04)) = 1;
145 *((u_int *)(hc->plx_base + 0x18)) = 0x40030043;
146 *((u_int *)(hc->plx_base + 0x1c)) = 0xff000000;
147 *((u_int *)(hc->plx_base + 0x20)) = 0;
148 *((u_int *)(hc->plx_base + 0x28)) = 0xe9;
149 *((u_int *)(hc->plx_base + 0x68)) = 0x10900;
152 * Get info from card.
154 * Only look for the second port if the first exists. Too many things
155 * will break if we have only a second port.
157 fecrp = (u_int *)(hc->sca_base + SR_FECR);
161 if (((fecr & SR_FECR_ID0) >> SR_FE_ID0_SHFT) != SR_FE_ID_NONE) {
163 if (((fecr & SR_FECR_ID1) >> SR_FE_ID1_SHFT) != SR_FE_ID_NONE)
169 hc->numports = numports;
170 hc->cardtype = SR_CRD_N2PCI;
172 hc->src_put8 = src_put8_mem;
173 hc->src_put16 = src_put16_mem;
174 hc->src_get8 = src_get8_mem;
175 hc->src_get16 = src_get16_mem;
178 * Malloc area for tx and rx buffers. For now allocate SRC_WIN_SIZ
179 * (16k) for each buffer.
181 * Allocate the block below 16M because the N2pci card can only access
182 * 16M memory at a time.
184 * (We could actually allocate a contiguous block above the 16MB limit,
185 * but this would complicate card programming more than we want to
188 hc->memsize = 2 * hc->numports * SRC_WIN_SIZ;
189 hc->mem_start = contigmalloc(hc->memsize,
197 if (hc->mem_start == NULL) {
198 printf("src%d: pci: failed to allocate buffer space.\n",
202 hc->winmsk = 0xffffffff;
203 hc->mem_end = (caddr_t)((u_int)hc->mem_start + hc->memsize);
204 hc->mem_pstart = kvtop(hc->mem_start);
205 bzero(hc->mem_start, hc->memsize);
207 *fecrp = SR_FECR_DTR0
212 if (sr_attach(device))
217 sr_deallocate_resources(device);
222 * I/O for PCI N2 card(s)
224 #define SRC_PCI_SCA_REG(y) ((y & 2) ? ((y & 0xfd) + 0x100) : y)
227 src_get8_mem(u_int base, u_int off)
229 return *((u_char *)(base + SRC_PCI_SCA_REG(off)));
233 src_get16_mem(u_int base, u_int off)
235 return *((u_short *)(base + SRC_PCI_SCA_REG(off)));
239 src_put8_mem(u_int base, u_int off, u_int val)
241 *((u_char *)(base + SRC_PCI_SCA_REG(off))) = (u_char)val;
245 src_put16_mem(u_int base, u_int off, u_int val)
247 *((u_short *)(base + SRC_PCI_SCA_REG(off))) = (u_short)val;