Add acpimcfg_configure_bus, which can be used by MD code to implement
PCI_NETBSD_CONFIGURE using ACPI MCFG tables.
This commit is contained in:
jmcneill
parent
7a0ad3635b
commit
aaf945cfa7
@ -1,4 +1,4 @@
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/* $NetBSD: acpi_mcfg.c,v 1.7 2018/10/13 13:32:50 jmcneill Exp $ */
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/* $NetBSD: acpi_mcfg.c,v 1.8 2018/10/15 10:01:32 jmcneill Exp $ */
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/*-
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* Copyright (C) 2015 NONAKA Kimihiro <nonaka@NetBSD.org>
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@ -25,16 +25,20 @@
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opt_pci.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: acpi_mcfg.c,v 1.7 2018/10/13 13:32:50 jmcneill Exp $");
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__KERNEL_RCSID(0, "$NetBSD: acpi_mcfg.c,v 1.8 2018/10/15 10:01:32 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/kmem.h>
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#include <sys/systm.h>
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#include <sys/extent.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pciconf.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/acpi/acpireg.h>
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@ -677,6 +681,209 @@ out:
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return error;
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}
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#ifdef PCI_NETBSD_CONFIGURE
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struct acpimcfg_resource {
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struct extent *ioext;
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struct extent *memext;
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struct extent *pmemext;
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};
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static ACPI_STATUS
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acpimcfg_configure_bus_cb(ACPI_RESOURCE *res, void *ctx)
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{
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struct acpimcfg_resource *pcires = ctx;
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struct extent *ex;
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const char *s;
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int error;
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if (res->Type != ACPI_RESOURCE_TYPE_ADDRESS32 &&
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res->Type != ACPI_RESOURCE_TYPE_ADDRESS64)
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return AE_OK;
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if (res->Data.Address.ProducerConsumer != ACPI_PRODUCER)
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return AE_OK;
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if (res->Data.Address.ResourceType != ACPI_MEMORY_RANGE &&
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res->Data.Address.ResourceType != ACPI_IO_RANGE)
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return AE_OK;
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if (res->Data.Address.ResourceType == ACPI_MEMORY_RANGE &&
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res->Data.Address.Info.Mem.Caching == ACPI_PREFETCHABLE_MEMORY) {
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if (pcires->pmemext == NULL) {
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pcires->pmemext = extent_create("pcipmem", 0, ULONG_MAX,
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NULL, 0, EX_WAITOK);
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error = extent_alloc_region(pcires->pmemext, 0, ULONG_MAX,
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EX_WAITOK);
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if (error) {
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extent_destroy(pcires->pmemext);
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pcires->pmemext = NULL;
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return AE_NO_MEMORY;
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}
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}
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ex = pcires->pmemext;
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s = "prefetchable";
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} else if (res->Data.Address.ResourceType == ACPI_MEMORY_RANGE &&
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res->Data.Address.Info.Mem.Caching != ACPI_PREFETCHABLE_MEMORY) {
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if (pcires->memext == NULL) {
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pcires->memext = extent_create("pcimem", 0, ULONG_MAX,
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NULL, 0, EX_WAITOK);
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error = extent_alloc_region(pcires->memext, 0, ULONG_MAX,
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EX_WAITOK);
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if (error) {
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extent_destroy(pcires->memext);
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pcires->memext = NULL;
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return AE_NO_MEMORY;
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}
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}
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ex = pcires->memext;
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s = "non-prefetchable";
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} else if (res->Data.Address.ResourceType == ACPI_IO_RANGE) {
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if (pcires->ioext == NULL) {
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pcires->ioext = extent_create("pciio", 0, ULONG_MAX,
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NULL, 0, EX_WAITOK);
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error = extent_alloc_region(pcires->ioext, 0, ULONG_MAX,
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EX_WAITOK);
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if (error) {
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extent_destroy(pcires->ioext);
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pcires->ioext = NULL;
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return AE_NO_MEMORY;
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}
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}
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ex = pcires->ioext;
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s = "i/o";
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}
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switch (res->Type) {
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case ACPI_RESOURCE_TYPE_ADDRESS16:
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aprint_debug(
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"MCFG: range 0x%04" PRIx16 " size %#" PRIx16 " (16-bit %s)\n",
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res->Data.Address16.Address.Minimum,
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res->Data.Address16.Address.AddressLength,
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s);
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error = extent_free(ex, res->Data.Address16.Address.Minimum,
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res->Data.Address16.Address.AddressLength, EX_WAITOK);
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if (error)
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return AE_NO_MEMORY;
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break;
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case ACPI_RESOURCE_TYPE_ADDRESS32:
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aprint_debug(
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"MCFG: range 0x%08" PRIx32 " size %#" PRIx32 " (32-bit %s)\n",
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res->Data.Address32.Address.Minimum,
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res->Data.Address32.Address.AddressLength,
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s);
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error = extent_free(ex, res->Data.Address32.Address.Minimum,
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res->Data.Address32.Address.AddressLength, EX_WAITOK);
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if (error)
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return AE_NO_MEMORY;
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break;
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case ACPI_RESOURCE_TYPE_ADDRESS64:
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aprint_debug(
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"MCFG: range 0x%016" PRIx64 " size %#" PRIx64 " (64-bit %s)\n",
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res->Data.Address64.Address.Minimum,
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res->Data.Address64.Address.AddressLength,
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s);
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error = extent_free(ex, res->Data.Address64.Address.Minimum,
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res->Data.Address64.Address.AddressLength, EX_WAITOK);
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if (error)
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return AE_NO_MEMORY;
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break;
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}
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return AE_OK;
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}
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int
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acpimcfg_configure_bus(device_t self, pci_chipset_tag_t pc, ACPI_HANDLE handle,
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int bus, int cacheline_size)
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{
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struct acpimcfg_resource res;
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struct mcfg_segment *seg;
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struct mcfg_bus *mb;
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bus_space_handle_t bsh[256];
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bool bsh_mapped[256];
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int error, boff, b, d, f;
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bus_addr_t baddr;
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ACPI_STATUS rv;
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seg = acpimcfg_get_segment(bus);
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if (seg == NULL)
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return ENOENT;
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/*
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* Map config space for all possible busses and mark them valid during
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* configuration so pci_configure_bus can access them through our chipset
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* tag with acpimcfg_conf_read/write below.
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*/
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memset(bsh_mapped, 0, sizeof(bsh_mapped));
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for (b = seg->ms_bus_start; b <= seg->ms_bus_end; b++) {
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boff = b - seg->ms_bus_start;
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mb = &seg->ms_bus[boff];
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baddr = seg->ms_address + (boff * ACPIMCFG_SIZE_PER_BUS);
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/* Map extended configration space of all dev/func. */
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error = bus_space_map(seg->ms_bst, baddr, ACPIMCFG_SIZE_PER_BUS, 0,
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&bsh[b]);
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if (error != 0)
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goto cleanup;
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bsh_mapped[b] = true;
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for (d = 0; d < 32; d++) {
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for (f = 0; f < 8; f++) {
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error = bus_space_subregion(seg->ms_bst, bsh[b],
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EXTCONF_OFFSET(d, f, 0), PCI_EXTCONF_SIZE,
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&mb->bsh[d][f]);
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if (error != 0)
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break;
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}
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}
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if (error != 0)
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goto cleanup;
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memset(mb->valid_devs, 0xff, sizeof(mb->valid_devs));
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}
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memset(&res, 0, sizeof(res));
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rv = AcpiWalkResources(handle, "_CRS", acpimcfg_configure_bus_cb, &res);
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if (ACPI_FAILURE(rv)) {
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error = ENXIO;
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goto cleanup;
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}
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error = pci_configure_bus(pc, res.ioext, res.memext, res.pmemext, bus,
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cacheline_size);
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cleanup:
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/*
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* Unmap config space for the segment's busses. Valid devices will be
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* re-mapped later on by acpimcfg_map_bus.
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*/
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for (b = seg->ms_bus_start; b <= seg->ms_bus_end; b++) {
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boff = b - seg->ms_bus_start;
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mb = &seg->ms_bus[boff];
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memset(mb->valid_devs, 0, sizeof(mb->valid_devs));
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if (bsh_mapped[b])
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bus_space_unmap(seg->ms_bst, bsh[b], ACPIMCFG_SIZE_PER_BUS);
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}
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if (res.ioext)
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extent_destroy(res.ioext);
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if (res.memext)
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extent_destroy(res.memext);
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if (res.pmemext)
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extent_destroy(res.pmemext);
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return error;
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}
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#else
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int
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acpimcfg_configure_bus(device_t self, pci_chipset_tag_t pc, ACPI_HANDLE handle,
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int cacheline_size)
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{
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return ENXIO;
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}
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#endif
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int
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acpimcfg_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg, pcireg_t *data)
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{
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@ -1,4 +1,4 @@
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/* $NetBSD: acpi_mcfg.h,v 1.1 2015/10/02 05:22:52 msaitoh Exp $ */
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/* $NetBSD: acpi_mcfg.h,v 1.2 2018/10/15 10:01:32 jmcneill Exp $ */
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/*-
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* Copyright (C) 2015 NONAKA Kimihiro <nonaka@NetBSD.org>
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@ -32,6 +32,7 @@ struct acpimcfg_ops;
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void acpimcfg_probe(struct acpi_softc *);
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int acpimcfg_init(bus_space_tag_t, const struct acpimcfg_ops *);
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int acpimcfg_map_bus(device_t, pci_chipset_tag_t, int);
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int acpimcfg_configure_bus(device_t, pci_chipset_tag_t, ACPI_HANDLE, int, int);
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int acpimcfg_conf_read(pci_chipset_tag_t, pcitag_t, int, pcireg_t *);
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int acpimcfg_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
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