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hwquirks: Detect cache on VIA VP3/MVP3 (#356)

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Add quirk to detect motherboard cache on VIA VP3/MVP3.

Co-authored-by: Sam Demeulemeester <38105886+x86fr@users.noreply.github.com>
This commit is contained in:
Jonathan Teh 2024-11-11 23:10:40 +00:00 committed by GitHub
parent d2ecbac5fd
commit 51b78487f5
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GPG Key ID: B5690EEEBB952194
2 changed files with 39 additions and 0 deletions
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38
system/hwquirks.c
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@ -50,6 +50,16 @@ static void asus_tusl2_configure_mux(void)
outb(0xAA, 0x2E);
}
static int *get_motherboard_cache(void)
{
if (l2_cache == 0) {
return &l2_cache;
} else if (l3_cache == 0) {
return &l3_cache;
}
return NULL;
}
static void get_m1541_l2_cache_size(void)
{
if (l2_cache != 0) {
@ -69,6 +79,24 @@ static void get_m1541_l2_cache_size(void)
if (reg == 0b10) { l2_cache = 1024; }
}
static void get_vt82c597_mb_cache_size(void)
{
int *const mb_cache = get_motherboard_cache();
if (!mb_cache) {
return;
}
// Check if cache is enabled with CC1 Register[7:6]
if ((pci_config_read8(0, 0, 0, 0x50) & 0xc0) != 0x80) {
return;
}
// Get cache size with CC2 Register[1:0]
const uint8_t reg = pci_config_read8(0, 0, 0, 0x51) & 0x03;
*mb_cache = 256 << reg;
}
static void disable_temp_reporting(void)
{
enable_temperature = false;
@ -140,6 +168,16 @@ void quirks_init(void)
quirk.process = get_m1541_l2_cache_size;
}
// -----------------------------------------------
// -- VIA VP3 (VT82C597), MVP3 (VT82C598) Quirk --
// -----------------------------------------------
// Motherboard cache detection
else if (quirk.root_vid == PCI_VID_VIA && (quirk.root_did == 0x0597 || quirk.root_did == 0x0598)) { // VIA VT82C597/8
quirk.id = QUIRK_VIA_VP3;
quirk.type |= QUIRK_TYPE_MEM_SIZE;
quirk.process = get_vt82c597_mb_cache_size;
}
// ------------------------
// -- ASUS TUSL2-C Quirk --
// ------------------------

1
system/hwquirks.h
View File

@ -29,6 +29,7 @@ typedef enum {
QUIRK_K8_BSTEP_NOTEMP,
QUIRK_K8_REVFG_TEMP,
QUIRK_AMD_ERRATA_319,
QUIRK_VIA_VP3,
QUIRK_LOONGSON7A00_EHCI_WORKARD
} quirk_id_t;