1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * TURBOchannel architecture calls.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (c) Harald Koerfgen, 1998
5*4882a593Smuzhiyun * Copyright (c) 2001, 2003, 2005, 2006 Maciej W. Rozycki
6*4882a593Smuzhiyun * Copyright (c) 2005 James Simmons
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU
9*4882a593Smuzhiyun * General Public License. See the file "COPYING" in the main
10*4882a593Smuzhiyun * directory of this archive for more details.
11*4882a593Smuzhiyun */
12*4882a593Smuzhiyun #include <linux/compiler.h>
13*4882a593Smuzhiyun #include <linux/errno.h>
14*4882a593Smuzhiyun #include <linux/init.h>
15*4882a593Smuzhiyun #include <linux/string.h>
16*4882a593Smuzhiyun #include <linux/tc.h>
17*4882a593Smuzhiyun #include <linux/types.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include <asm/addrspace.h>
20*4882a593Smuzhiyun #include <asm/bootinfo.h>
21*4882a593Smuzhiyun #include <asm/paccess.h>
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun #include <asm/dec/interrupts.h>
24*4882a593Smuzhiyun #include <asm/dec/prom.h>
25*4882a593Smuzhiyun #include <asm/dec/system.h>
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun /*
28*4882a593Smuzhiyun * Protected read byte from TURBOchannel slot space.
29*4882a593Smuzhiyun */
tc_preadb(u8 * valp,void __iomem * addr)30*4882a593Smuzhiyun int tc_preadb(u8 *valp, void __iomem *addr)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun return get_dbe(*valp, (u8 *)addr);
33*4882a593Smuzhiyun }
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun /*
36*4882a593Smuzhiyun * Get TURBOchannel bus information as specified by the spec, plus
37*4882a593Smuzhiyun * the slot space base address and the number of slots.
38*4882a593Smuzhiyun */
tc_bus_get_info(struct tc_bus * tbus)39*4882a593Smuzhiyun int __init tc_bus_get_info(struct tc_bus *tbus)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun if (!dec_tc_bus)
42*4882a593Smuzhiyun return -ENXIO;
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun memcpy(&tbus->info, rex_gettcinfo(), sizeof(tbus->info));
45*4882a593Smuzhiyun tbus->slot_base = CPHYSADDR((long)rex_slot_address(0));
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun switch (mips_machtype) {
48*4882a593Smuzhiyun case MACH_DS5000_200:
49*4882a593Smuzhiyun tbus->num_tcslots = 7;
50*4882a593Smuzhiyun break;
51*4882a593Smuzhiyun case MACH_DS5000_2X0:
52*4882a593Smuzhiyun case MACH_DS5900:
53*4882a593Smuzhiyun tbus->ext_slot_base = 0x20000000;
54*4882a593Smuzhiyun tbus->ext_slot_size = 0x20000000;
55*4882a593Smuzhiyun fallthrough;
56*4882a593Smuzhiyun case MACH_DS5000_1XX:
57*4882a593Smuzhiyun tbus->num_tcslots = 3;
58*4882a593Smuzhiyun break;
59*4882a593Smuzhiyun case MACH_DS5000_XX:
60*4882a593Smuzhiyun tbus->num_tcslots = 2;
61*4882a593Smuzhiyun default:
62*4882a593Smuzhiyun break;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun /*
68*4882a593Smuzhiyun * Get the IRQ for the specified slot.
69*4882a593Smuzhiyun */
tc_device_get_irq(struct tc_dev * tdev)70*4882a593Smuzhiyun void __init tc_device_get_irq(struct tc_dev *tdev)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun switch (tdev->slot) {
73*4882a593Smuzhiyun case 0:
74*4882a593Smuzhiyun tdev->interrupt = dec_interrupt[DEC_IRQ_TC0];
75*4882a593Smuzhiyun break;
76*4882a593Smuzhiyun case 1:
77*4882a593Smuzhiyun tdev->interrupt = dec_interrupt[DEC_IRQ_TC1];
78*4882a593Smuzhiyun break;
79*4882a593Smuzhiyun case 2:
80*4882a593Smuzhiyun tdev->interrupt = dec_interrupt[DEC_IRQ_TC2];
81*4882a593Smuzhiyun break;
82*4882a593Smuzhiyun /*
83*4882a593Smuzhiyun * Yuck! DS5000/200 onboard devices
84*4882a593Smuzhiyun */
85*4882a593Smuzhiyun case 5:
86*4882a593Smuzhiyun tdev->interrupt = dec_interrupt[DEC_IRQ_TC5];
87*4882a593Smuzhiyun break;
88*4882a593Smuzhiyun case 6:
89*4882a593Smuzhiyun tdev->interrupt = dec_interrupt[DEC_IRQ_TC6];
90*4882a593Smuzhiyun break;
91*4882a593Smuzhiyun default:
92*4882a593Smuzhiyun tdev->interrupt = -1;
93*4882a593Smuzhiyun break;
94*4882a593Smuzhiyun }
95*4882a593Smuzhiyun }
96