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Root/tags/2.0/i386/libsaio/hpet.c

Source at commit 1793 created 12 years 5 months ago.
By blackosx, Attempt to overcome issue 211 by revising the code to remove all package .svn files before function makeSubstitutions() is called. The line it replaces should work but I can't figure out why it doesn't...
1/*
2 *
3 */
4
5#include "libsaio.h"
6#include "pci.h"
7#include "hpet.h"
8
9#ifndef DEBUG_HPET
10#define DEBUG_HPET 0
11#endif
12
13#if DEBUG_HPET
14#define DBG(x...) printf(x)
15#else
16#define DBG(x...)
17#endif
18
19static struct lpc_controller_t lpc_controllers[] = {
20
21// Default unknown chipset
22{ 0, 0, "" },
23
24// Intel
25{ 0x8086, 0x24dc, "ICH5" },
26{ 0x8086, 0x2640, "ICH6" },
27{ 0x8086, 0x2641, "ICH6M" },
28
29{ 0x8086, 0x27b0, "ICH7 DH" },
30{ 0x8086, 0x27b8, "ICH7" },
31{ 0x8086, 0x27b9, "ICH7M" },
32{ 0x8086, 0x27bd, "ICH7M DH" },
33
34{ 0x8086, 0x2810, "ICH8R" },
35{ 0x8086, 0x2811, "ICH8M-E" },
36{ 0x8086, 0x2812, "ICH8DH" },
37{ 0x8086, 0x2814, "ICH8DO" },
38{ 0x8086, 0x2815, "ICH8M" },
39
40{ 0x8086, 0x2912, "ICH9DH" },
41{ 0x8086, 0x2914, "ICH9DO" },
42{ 0x8086, 0x2916, "ICH9R" },
43{ 0x8086, 0x2917, "ICH9M-E" },
44{ 0x8086, 0x2918, "ICH9" },
45{ 0x8086, 0x2919, "ICH9M" },
46
47{ 0x8086, 0x3a14, "ICH10DO" },
48{ 0x8086, 0x3a16, "ICH10R" },
49{ 0x8086, 0x3a18, "ICH10" },
50{ 0x8086, 0x3a1a, "ICH10D" },
51
52};
53
54void force_enable_hpet(pci_dt_t *lpc_dev)
55{
56int i;
57uint32_tval, hpet_address = 0xFED00000;
58void*rcba;
59
60/* LPC on Intel ICH is always (?) at 00:1f.0 */
61for(i = 1; i < sizeof(lpc_controllers) / sizeof(lpc_controllers[0]); i++)
62if ((lpc_controllers[i].vendor == lpc_dev->vendor_id)
63&& (lpc_controllers[i].device == lpc_dev->device_id))
64{
65rcba = (void *)(pci_config_read32(lpc_dev->dev.addr, 0xF0) & 0xFFFFC000);
66
67DBG("Intel(R) %s LPC Interface [%04x:%04x], MMIO @ 0x%lx\n",
68lpc_controllers[i].name, lpc_dev->vendor_id, lpc_dev->device_id, rcba);
69
70if (rcba == 0)
71printf(" RCBA disabled; cannot force enable HPET\n");
72else
73{
74val = REG32(rcba, 0x3404);
75if (val & 0x80)
76{
77// HPET is enabled in HPTC. Just not reported by BIOS
78DBG(" HPET is enabled in HPTC, just not reported by BIOS\n");
79hpet_address |= (val & 3) << 12 ;
80DBG(" HPET MMIO @ 0x%lx\n", hpet_address);
81}
82else
83{
84// HPET disabled in HPTC. Trying to enable
85DBG(" HPET is disabled in HPTC, trying to enable\n");
86REG32(rcba, 0x3404) = val | 0x80;
87hpet_address |= (val & 3) << 12 ;
88DBG(" Force enabled HPET, MMIO @ 0x%lx\n", hpet_address);
89}
90
91// verify if the job is done
92val = REG32(rcba, 0x3404);
93if (!(val & 0x80))
94printf(" Failed to force enable HPET\n");
95}
96break;
97}
98
99#if DEBUG_HPET
100printf("Press [Enter] to continue...\n");
101getchar();
102#endif
103}
104

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Revision: 1793