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| Source at commit 426 created 13 years 10 months ago. By azimutz, Doc edit. CHANGES.txt and README.txt are final for now, though README can suffer changes at any time, since it's an introduction file. On to FileLoad.txt and TODO.txt. | |
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| 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 | ␊ |
| 19 | static 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 | ␊ |
| 54 | void force_enable_hpet(pci_dt_t *lpc_dev)␊ |
| 55 | {␊ |
| 56 | ␉int i;␊ |
| 57 | ␉uint32_t␉val, hpet_address = 0xFED00000;␊ |
| 58 | ␉void␉␉*rcba;␊ |
| 59 | ␊ |
| 60 | ␉/* LPC on Intel ICH is always (?) at 00:1f.0 */␊ |
| 61 | ␉for(i = 1; i < sizeof(lpc_controllers) / sizeof(lpc_controllers[0]); i++)␊ |
| 62 | ␉␉if ((lpc_controllers[i].vendor == lpc_dev->vendor_id) ␊ |
| 63 | ␉␉␉&& (lpc_controllers[i].device == lpc_dev->device_id))␊ |
| 64 | ␉␉{␊ |
| 65 | ␉␉␉rcba = (void *)(pci_config_read32(lpc_dev->dev.addr, 0xF0) & 0xFFFFC000);␊ |
| 66 | ␊ |
| 67 | ␉␉␉DBG("Intel(R) %s LPC Interface [%04x:%04x], MMIO @ 0x%lx\n", ␊ |
| 68 | ␉␉␉␉lpc_controllers[i].name, lpc_dev->vendor_id, lpc_dev->device_id, rcba);␊ |
| 69 | ␊ |
| 70 | ␉␉␉if (rcba == 0)␊ |
| 71 | ␉␉␉␉printf(" RCBA disabled; cannot force enable HPET\n");␊ |
| 72 | ␉␉␉else␊ |
| 73 | ␉␉␉{␊ |
| 74 | ␉␉␉␉val = REG32(rcba, 0x3404);␊ |
| 75 | ␉␉␉␉if (val & 0x80)␊ |
| 76 | ␉␉␉␉{␊ |
| 77 | ␉␉␉␉␉// HPET is enabled in HPTC. Just not reported by BIOS␊ |
| 78 | ␉␉␉␉␉DBG(" HPET is enabled in HPTC, just not reported by BIOS\n");␊ |
| 79 | ␉␉␉␉␉hpet_address |= (val & 3) << 12 ;␊ |
| 80 | ␉␉␉␉␉DBG(" HPET MMIO @ 0x%lx\n", hpet_address);␊ |
| 81 | ␉␉␉␉}␊ |
| 82 | ␉␉␉␉else␊ |
| 83 | ␉␉␉␉{␊ |
| 84 | ␉␉␉␉␉// HPET disabled in HPTC. Trying to enable␊ |
| 85 | ␉␉␉␉␉DBG(" HPET is disabled in HPTC, trying to enable\n");␉␉␉␉␉␉␉␉␉␊ |
| 86 | ␉␉␉␉␉REG32(rcba, 0x3404) = val | 0x80;␊ |
| 87 | ␉␉␉␉␉hpet_address |= (val & 3) << 12 ;␊ |
| 88 | ␉␉␉␉␉DBG(" Force enabled HPET, MMIO @ 0x%lx\n", hpet_address);␊ |
| 89 | ␉␉␉␉}␊ |
| 90 | ␊ |
| 91 | ␉␉␉␉// verify if the job is done␊ |
| 92 | ␉␉␉␉val = REG32(rcba, 0x3404);␊ |
| 93 | ␉␉␉␉if (!(val & 0x80))␊ |
| 94 | ␉␉␉␉␉printf(" Failed to force enable HPET\n");␊ |
| 95 | ␉␉␉}␊ |
| 96 | ␉␉␉break;␊ |
| 97 | ␉␉}␊ |
| 98 | ␊ |
| 99 | #if DEBUG_HPET␊ |
| 100 | ␉printf("Press [Enter] to continue...\n");␊ |
| 101 | ␉getc();␊ |
| 102 | #endif␊ |
| 103 | }␊ |
| 104 | |
