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Diffstat (limited to 'sys/dev/pci/sti_pci.c')
-rw-r--r--sys/dev/pci/sti_pci.c247
1 files changed, 247 insertions, 0 deletions
diff --git a/sys/dev/pci/sti_pci.c b/sys/dev/pci/sti_pci.c
new file mode 100644
index 00000000000..29a00b30f5a
--- /dev/null
+++ b/sys/dev/pci/sti_pci.c
@@ -0,0 +1,247 @@
+/* $OpenBSD: sti_pci.c,v 1.1 2006/12/18 18:59:25 miod Exp $ */
+/*
+ * Copyright (c) 2006 Miodrag Vallat.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice, this permission notice, and the disclaimer below
+ * appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcidevs.h>
+
+#include <dev/ic/stireg.h>
+#include <dev/ic/stivar.h>
+
+int sti_pci_match(struct device *, void *, void *);
+void sti_pci_attach(struct device *, struct device *, void *);
+
+struct cfattach sti_pci_ca = {
+ sizeof(struct sti_softc), sti_pci_match, sti_pci_attach
+};
+
+const struct pci_matchid sti_pci_devices[] = {
+ { PCI_VENDOR_HP, PCI_PRODUCT_HP_VISUALIZE_EG },
+ { PCI_VENDOR_HP, PCI_PRODUCT_HP_VISUALIZE_FX2 },
+ { PCI_VENDOR_HP, PCI_PRODUCT_HP_VISUALIZE_FX4 },
+ { PCI_VENDOR_HP, PCI_PRODUCT_HP_VISUALIZE_FX6 },
+ { PCI_VENDOR_HP, PCI_PRODUCT_HP_VISUALIZE_FXE },
+};
+
+int sti_readbar(struct sti_softc *, struct pci_attach_args *, u_int, int);
+int sti_maprom(struct sti_softc *, struct pci_attach_args *);
+
+int
+sti_pci_match(struct device *parent, void *cf, void *aux)
+{
+ struct pci_attach_args *paa = aux;
+
+ return (pci_matchbyid(paa, sti_pci_devices,
+ sizeof(sti_pci_devices) / sizeof(sti_pci_devices[0])));
+}
+
+void
+sti_pci_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct sti_softc *sc = (void *)self;
+ struct pci_attach_args *paa = aux;
+
+ printf("\n");
+
+ if (sti_maprom(sc, paa) != 0)
+ return;
+
+ printf("%s", self->dv_xname);
+ sti_attach_common(sc, STI_CODEBASE_MAIN);
+
+ sti_end_attach(sc);
+}
+
+/*
+ * Map the STI ROM image.
+ */
+int
+sti_maprom(struct sti_softc *sc, struct pci_attach_args *pa)
+{
+ pcireg_t address, mask;
+ bus_space_handle_t romh;
+ bus_size_t romsize, stiromsize;
+ bus_addr_t offs;
+ u_int32_t tmp;
+ int i;
+ int rc;
+
+ address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
+ pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, 0xfffffffe);
+ mask = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
+ address |= PCI_ROM_ENABLE;
+ pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
+
+ /*
+ * Map the complete ROM for now.
+ */
+
+ romsize = PCI_ROM_SIZE(mask);
+ rc = bus_space_map(pa->pa_memt, PCI_ROM_ADDR(address), romsize,
+ 0, &romh);
+ if (rc != 0) {
+ printf("%s: can't map PCI ROM (%d)\n",
+ sc->sc_dev.dv_xname, rc);
+ goto fail2;
+ }
+
+ /*
+ * Check for a valid ROM header.
+ */
+
+ tmp = bus_space_read_4(pa->pa_memt, romh, 0);
+ tmp = letoh32(tmp);
+ if (tmp != 0x55aa0000) {
+ printf("%s: invalid PCI ROM header signature (%08x)\n",
+ sc->sc_dev.dv_xname, tmp);
+ rc = EINVAL;
+ goto fail;
+ }
+
+ tmp = bus_space_read_4(pa->pa_memt, romh, 4);
+ tmp = letoh32(tmp);
+ if (tmp != 0x00000001) { /* 1 == STI ROM */
+ printf("%s: invalid PCI ROM type (%08x)\n",
+ sc->sc_dev.dv_xname, tmp);
+ rc = EINVAL;
+ goto fail;
+ }
+
+ /*
+ * Read the STI region BAR assignments.
+ */
+
+ offs = (bus_addr_t)bus_space_read_2(pa->pa_memt, romh, 0x0e);
+ for (i = 0; i < STI_REGION_MAX; i++) {
+ rc = sti_readbar(sc, pa, i,
+ bus_space_read_1(pa->pa_memt, romh, offs + i));
+ if (rc != 0)
+ goto fail;
+ }
+
+ /*
+ * Check for a valid ROM data structure.
+ * We do not need it except to know what architecture the ROM
+ * code is for.
+ */
+
+ offs = (bus_addr_t)bus_space_read_2(pa->pa_memt, romh, 0x18);
+ tmp = bus_space_read_4(pa->pa_memt, romh, offs + 0);
+ tmp = letoh32(tmp);
+ if (tmp != 0x50434952) { /* PCIR */
+ printf("%s: invalid PCI data signature (%08x)\n",
+ sc->sc_dev.dv_xname, tmp);
+ rc = EINVAL;
+ goto fail;
+ }
+
+ tmp = bus_space_read_1(pa->pa_memt, romh, offs + 0x14);
+ switch (tmp) {
+#ifdef __hppa__
+ case 0x10:
+ break;
+#endif
+#ifdef __i386__
+ case 0x00:
+ break;
+#endif
+ default:
+ printf("%s: wrong microcode architecture (%02x)\n",
+ sc->sc_dev.dv_xname, tmp);
+ rc = ENOEXEC;
+ goto fail;
+ }
+
+ /*
+ * Find out where the STI ROM itself lies, and its size.
+ */
+
+ offs = (bus_addr_t)bus_space_read_4(pa->pa_memt, romh, 0x08);
+ stiromsize = (bus_addr_t)bus_space_read_4(pa->pa_memt, romh,
+ offs + 0x18);
+ stiromsize = letoh32(stiromsize);
+
+ /*
+ * Replace our mapping with a smaller mapping of only the area
+ * we are interested in.
+ */
+
+ bus_space_unmap(pa->pa_memt, romh, romsize);
+ rc = bus_space_map(pa->pa_memt, PCI_ROM_ADDR(address) + offs,
+ stiromsize, 0, &sc->romh);
+ if (rc != 0) {
+ printf("%s: can't map STI ROM (%d)\n",
+ sc->sc_dev.dv_xname, rc);
+ goto fail2;
+ }
+ sc->memt = pa->pa_memt;
+
+ return (0);
+
+fail:
+ bus_space_unmap(pa->pa_memt, romh, romsize);
+fail2:
+ address = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_ROM_REG);
+ address &= ~PCI_ROM_ENABLE;
+ pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_ROM_REG, address);
+
+ return (rc);
+}
+
+/*
+ * Decode a BAR register.
+ */
+int
+sti_readbar(struct sti_softc *sc, struct pci_attach_args *pa, u_int region,
+ int bar)
+{
+ bus_addr_t addr;
+ bus_size_t size;
+ u_int32_t cf;
+ int rc;
+
+ if (bar == 0) {
+ sc->bases[region] = 0;
+ return (0);
+ }
+
+#ifdef DIAGNOSTIC
+ if (bar < PCI_MAPREG_START || bar > PCI_MAPREG_PPB_END)
+ printf("%s: unexpected bar %02x for region %d\n", bar, region);
+#endif
+
+ cf = pci_conf_read(pa->pa_pc, pa->pa_tag, bar);
+
+ if (PCI_MAPREG_TYPE(cf) == PCI_MAPREG_TYPE_IO)
+ rc = pci_io_find(pa->pa_pc, pa->pa_tag, bar, &addr, &size);
+ else
+ rc = pci_mem_find(pa->pa_pc, pa->pa_tag, bar, &addr, &size,
+ NULL);
+
+ if (rc != 0) {
+ printf("%s: invalid bar %02x for region %d\n", bar, region);
+ return (rc);
+ }
+
+ sc->bases[region] = addr;
+ return (0);
+}
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