claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

PCI: Fix and delegate bridge initialization on Dell riser machines

Browse Source
This commit is contained in:
RichardG867
2025-05-28 16:35:38 -03:00
parent 72a52318f5
commit 2b71002dab
6 changed files with 41 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
src/device/pci_bridge.c
View File

@@ -87,6 +87,14 @@ pci_bridge_set_ctl(void *priv, uint8_t ctl)
dev->ctl = ctl;
}
uint8_t
pci_bridge_get_bus_index(void *priv)
{
pci_bridge_t *dev = (pci_bridge_t *) priv;
return dev->bus_index;
}
static void
pci_bridge_write(int func, int addr, uint8_t val, void *priv)
{
@@ -513,11 +521,9 @@ static void *
pci_bridge_init(const device_t *info)
{
uint8_t interrupts[4];
uint8_t interrupt_count;
uint8_t interrupt_mask;
uint8_t add_type;
uint8_t slot_count;
uint8_t dell_slots[3] = { 0x09, 0x0a, 0x0b };
uint8_t dell_interrupts[3][4] = { { 1, 2, 3, 4 }, { 4, 2, 1, 3 }, { 1, 3, 4, 2 } };
pci_bridge_t *dev = (pci_bridge_t *) calloc(1, sizeof(pci_bridge_t));
@@ -527,40 +533,35 @@ pci_bridge_init(const device_t *info)
pci_bridge_reset(dev);
if (info->local == PCI_BRIDGE_DEC_21152)
pci_add_card(PCI_ADD_BRIDGE, pci_bridge_read, pci_bridge_write, dev, &dev->slot);
else
pci_add_bridge(AGP_BRIDGE(dev->local), pci_bridge_read, pci_bridge_write, dev, &dev->slot);
interrupt_count = sizeof(interrupts);
interrupt_mask = interrupt_count - 1;
interrupt_mask = sizeof(interrupts) - 1;
if (dev->slot < 32) {
for (uint8_t i = 0; i < interrupt_count; i++)
for (uint8_t i = 0; i <= interrupt_mask; i++)
interrupts[i] = pci_get_int(dev->slot, PCI_INTA + i);
}
pci_bridge_log("PCI Bridge %d: upstream bus %02X slot %02X interrupts %02X %02X %02X %02X\n",
dev->bus_index, (dev->slot >> 5) & 0xff, dev->slot & 31, interrupts[0],
interrupts[1], interrupts[2], interrupts[3]);
if (info->local == PCI_BRIDGE_DEC_21150)
if (info->local == PCI_BRIDGE_DEC_21150) {
slot_count = 9; /* 9 bus masters */
else if (info->local == PCI_BRIDGE_DEC_21152)
slot_count = 3; /* 3 bus masters */
else
add_type = PCI_ADD_NORMAL;
} else if (info->local == PCI_BRIDGE_DEC_21152) {
slot_count = 0; /* 4 bus masters, but slots are added by the Dell machines */
add_type = PCI_ADD_BRIDGE;
} else {
slot_count = 1; /* AGP bridges always have 1 slot */
add_type = PCI_ADD_AGPBRIDGE;
}
pci_add_bridge(add_type, pci_bridge_read, pci_bridge_write, dev, &dev->slot);
for (uint8_t i = 0; i < slot_count; i++) {
uint8_t slot = i;
if (info->local == PCI_BRIDGE_DEC_21152) {
slot = dell_slots[i];
memcpy(interrupts, dell_interrupts[i], 4);
}
/* Interrupts for bridge slots are assigned in round-robin: ABCD, BCDA, CDAB and so on. */
pci_bridge_log("PCI Bridge %d: downstream slot %02X interrupts %02X %02X %02X %02X\n",
dev->bus_index, slot, interrupts[i & interrupt_mask],
dev->bus_index, i, interrupts[i & interrupt_mask],
interrupts[(i + 1) & interrupt_mask], interrupts[(i + 2) & interrupt_mask],
interrupts[(i + 3) & interrupt_mask]);
pci_register_bus_slot(dev->bus_index, slot, AGP_BRIDGE(dev->local) ? PCI_CARD_AGP : PCI_CARD_NORMAL,
pci_register_bus_slot(dev->bus_index, i, AGP_BRIDGE(dev->local) ? PCI_CARD_AGP : PCI_CARD_NORMAL,
interrupts[i & interrupt_mask],
interrupts[(i + 1) & interrupt_mask],
interrupts[(i + 2) & interrupt_mask],