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libpayload/storage/ahci: Use pacc pointer to read device class

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The PCI bus gets already scanned while gathering system information.
Therefore, use the pacc pointer from sysinfo_t to read the device class
of PCI devices instead of rescanning the bus.

Change-Id: I4c79e71777e718f5065107ebf780ca9fdb4f1b0c
Signed-off-by: Felix Singer <felix.singer@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46416
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Felix Singer
2020-10-14 18:44:49 +02:00
committed by Nico Huber
parent 9e5bc74cc7
commit b4b73d4995
4 changed files with 17 additions and 19 deletions
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19
payloads/libpayload/drivers/storage/ahci.c
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@@ -227,7 +227,8 @@ static u32 working_controllers[] = {
0x8086 | 0x5ae3 << 16, /* Apollo Lake */
};
#endif
static void ahci_init_pci(pcidev_t dev)
void ahci_initialize(pcidev_t dev)
{
int i;
@@ -282,19 +283,3 @@ static void ahci_init_pci(pcidev_t dev)
ahci_port_probe(ctrl, &ports[i], i + 1);
}
}
void ahci_initialize(void)
{
int bus, dev, func;
for (bus = 0; bus < 256; ++bus) {
for (dev = 0; dev < 32; ++dev) {
const u16 class =
pci_read_config16(PCI_DEV(bus, dev, 0), 0xa);
if (class != 0xffff) {
for (func = 0; func < 8; ++func)
ahci_init_pci(PCI_DEV(bus, dev, func));
}
}
}
}