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PCI driver rewrite

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This commit is contained in:
Kamil Kowalczyk
2025-11-23 21:37:12 +01:00
parent e105b2fe35
commit fa152cac4d
9 changed files with 267 additions and 505 deletions
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52
kernel/pci/ata.c Normal file
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#include <stdint.h>
#include <stddef.h>
#include "pci/pci.h"
#include "storedev/storedev.h"
#include "storedev/atasd.h"
#include "kprintf.h"
#define ATA_PROBE(STRING, IOBASE, CTRLBASE, S_OR_M) \
ps = ata_probesize_bytes((IOBASE), (CTRLBASE), (S_OR_M)); \
if (ps > 0) { \
AtaSdInitExtra extra = { \
.devno = (S_OR_M), \
.capacity = ps, \
.iobase = (IOBASE), \
.ctrlbase = (CTRLBASE), \
}; \
storedev_create(STOREDEV_ATASD, (STRING), (void *)&extra); \
}
#define ATA_MASTER 0x00
#define ATA_SLAVE 0x01
#define ATA_PRIM_IO 0x1F0
#define ATA_PRIM_CTRL 0x3F6
#define ATA_SCND_IO 0x170
#define ATA_SCND_CTRL 0x376
void pci_ata_init(void) {
PciDev dev = pci_getdev(0x8086, 0x7010, -1);
uint16_t iobase, ctrlbase;
uint64_t ps;
uint32_t bar0 = pci_read(dev, PCI_BAR0);
uint32_t bar1 = pci_read(dev, PCI_BAR1);
uint32_t bar2 = pci_read(dev, PCI_BAR2);
uint32_t bar3 = pci_read(dev, PCI_BAR3);
LOG("pci", "ATA bar0=0x%x, bar1=0x%x, bar2=0x%x, bar3=0x%x\n", bar0, bar1, bar2, bar3);
iobase = (bar0 & 0xFFFFFFFC) + ATA_PRIM_IO * (!bar0);
ctrlbase = (bar1 & 0xFFFFFFFC) + ATA_PRIM_CTRL * (!bar1);
LOG("pci", "ATA CHANNEL PRIM: iobase=0x%x, ctrlbase=0x%x\n", iobase, ctrlbase);
ATA_PROBE("atasd0m", iobase, ctrlbase, ATA_MASTER);
ATA_PROBE("atasd0s", iobase, ctrlbase, ATA_SLAVE);
iobase = (bar2 & 0xFFFFFFFC) + ATA_SCND_IO * (!bar2);
ctrlbase = (bar3 & 0xFFFFFFFC) + ATA_SCND_CTRL * (!bar3);
LOG("pci", "ATA CHANNEL SCND: iobase=0x%x, ctrlbase=0x%x\n", iobase, ctrlbase);
ATA_PROBE("atasd1m", iobase, ctrlbase, ATA_MASTER);
ATA_PROBE("atasd2s", iobase, ctrlbase, ATA_SLAVE);
}