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[src/trunk]: src/sys/arch/amiga/pci Add Mediator 4000 driver - em4k(4). Worki...
details: https://anonhg.NetBSD.org/src/rev/f62f7ff7f6d7
branches: trunk
changeset: 784465:f62f7ff7f6d7
user: rkujawa <rkujawa%NetBSD.org@localhost>
date: Tue Jan 29 00:49:42 2013 +0000
description:
Add Mediator 4000 driver - em4k(4). Working, but PCI_NETBSD_CONFIGURE not
implemented yet. While here add some untested Mediator ZIV support to empb(4).
diffstat:
sys/arch/amiga/pci/em4k.c | 371 +++++++++++++++++++++++++++++++++++++++++++
sys/arch/amiga/pci/em4kvar.h | 68 +++++++
sys/arch/amiga/pci/emmem.c | 10 +-
sys/arch/amiga/pci/empb.c | 3 +-
sys/arch/amiga/pci/empbreg.h | 30 ++-
5 files changed, 471 insertions(+), 11 deletions(-)
diffs (truncated from 556 to 300 lines):
diff -r e387fe4df6a1 -r f62f7ff7f6d7 sys/arch/amiga/pci/em4k.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/amiga/pci/em4k.c Tue Jan 29 00:49:42 2013 +0000
@@ -0,0 +1,371 @@
+/* $NetBSD: em4k.c,v 1.1 2013/01/29 00:49:42 rkujawa Exp $ */
+
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Radoslaw Kujawa.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Elbox Mediator PCI 4000 driver. */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/extent.h>
+#include <sys/kmem.h>
+
+#include <uvm/uvm_extern.h>
+
+#include <machine/bus.h>
+#include <machine/cpu.h>
+
+#include <amiga/dev/zbusvar.h>
+#include <amiga/pci/empbreg.h>
+#include <amiga/pci/em4kvar.h>
+#include <amiga/pci/emmemvar.h>
+
+#include <dev/pci/pciconf.h>
+
+#include "opt_pci.h"
+
+static int em4k_match(device_t, cfdata_t, void *);
+static void em4k_attach(device_t, device_t, void *);
+static void em4k_callback(device_t);
+
+static void em4k_find_mem(struct em4k_softc *);
+static void em4k_intr_enable(struct em4k_softc *);
+
+pcireg_t em4k_pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
+void em4k_pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
+int em4k_pci_bus_maxdevs(pci_chipset_tag_t, int);
+void em4k_pci_attach_hook(device_t, device_t,
+ struct pcibus_attach_args *);
+pcitag_t em4k_pci_make_tag(pci_chipset_tag_t, int, int, int);
+void em4k_pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
+ int *, int *, int *);
+int em4k_pci_intr_map(const struct pci_attach_args *,
+ pci_intr_handle_t *);
+const struct evcnt * em4k_pci_intr_evcnt(pci_chipset_tag_t,
+ pci_intr_handle_t);
+int em4k_pci_conf_hook(pci_chipset_tag_t, int, int, int, pcireg_t);
+
+CFATTACH_DECL_NEW(em4k, sizeof(struct em4k_softc),
+ em4k_match, em4k_attach, NULL, NULL);
+
+static int
+em4k_match(device_t parent, cfdata_t cf, void *aux)
+{
+ struct zbus_args *zap;
+
+ zap = aux;
+
+ if (zap->manid != ZORRO_MANID_ELBOX)
+ return 0;
+
+ switch (zap->prodid) {
+ case ZORRO_PRODID_MED4K:
+ case ZORRO_PRODID_MED4KMKII:
+ return 1;
+ }
+
+ return 0;
+}
+
+
+static void
+em4k_attach(device_t parent, device_t self, void *aux)
+{
+ struct em4k_softc *sc;
+ struct zbus_args *zap;
+
+ volatile char *ba;
+
+ zap = aux;
+ sc = device_private(self);
+ sc->sc_dev = self;
+ ba = zap->va;
+
+ sc->model = zap->prodid;
+
+ switch (sc->model) {
+ case ZORRO_PRODID_MED4K:
+ aprint_normal(": ELBOX Mediator PCI 4000\n");
+ break;
+ case ZORRO_PRODID_MED4KMKII:
+ aprint_normal(": ELBOX Mediator PCI 4000 MK-II\n");
+ break;
+ default:
+ aprint_normal(": ELBOX Mediator PCI (unknown)\n");
+ break;
+ }
+
+ /* Setup bus space mappings. */
+ sc->pci_conf_area.base = (bus_addr_t) ba + EM4K_CONF_OFF;
+ sc->pci_conf_area.absm = &amiga_bus_stride_1swap;
+
+ sc->pci_io_area.base = (bus_addr_t) ba + EM4K_IO_OFF;
+ sc->pci_io_area.absm = &amiga_bus_stride_1swap;
+
+ sc->setup_area.base = (bus_addr_t) ba + EM4K_SETUP_OFF;
+ sc->setup_area.absm = &amiga_bus_stride_1;
+
+ /*
+ * Defer everything until later, we need to wait for possible
+ * emmem attachments.
+ */
+
+ config_defer(self, em4k_callback);
+}
+
+static void
+em4k_callback(device_t self) {
+
+ struct em4k_softc *sc;
+ pci_chipset_tag_t pc;
+ struct pcibus_attach_args pba;
+#ifdef PCI_NETBSD_CONFIGURE
+ /* struct extent *ioext, *memext; */
+#endif /* PCI_NETBSD_CONFIGURE */
+
+ sc = device_private(self);
+ pc = &sc->apc;
+
+#ifdef EM4K_DEBUG
+ aprint_normal("em4k: mapped setup %x->%x, conf %x->%x, io %x->%x\n",
+ kvtop((void*) sc->setup_area.base), sc->setup_area.base,
+ kvtop((void*) sc->pci_conf_area.base), sc->pci_conf_area.base,
+ kvtop((void*) sc->pci_io_area.base), sc->pci_io_area.base);
+#endif
+
+ sc->pci_conf_t = &(sc->pci_conf_area);
+ sc->pci_io_t = &(sc->pci_io_area);
+
+ if (bus_space_map(sc->pci_conf_t, 0, EM4K_CONF_SIZE, 0,
+ &sc->pci_conf_h))
+ aprint_error_dev(self, "couldn't map PCI config space\n");
+
+ if (bus_space_map(sc->pci_io_t, 0, EM4K_IO_SIZE, 0,
+ &sc->pci_io_h))
+ aprint_error_dev(self, "couldn't map PCI I/O space\n");
+
+ sc->apc.pci_conf_datat = sc->pci_conf_t;
+ sc->apc.pci_conf_datah = sc->pci_conf_h;
+
+ sc->setup_area_t = &(sc->setup_area);
+
+ if (bus_space_map(sc->setup_area_t, 0, EM4K_SETUP_SIZE, 0,
+ &sc->setup_area_h))
+ aprint_error_dev(self,
+ "couldn't map Mediator setup space\n");
+
+ em4k_find_mem(sc);
+ if (sc->pci_mem_win_size == 0)
+ aprint_error_dev(self,
+ "couldn't find memory space, this shouldn't happen!\n");
+
+ /* Initialize the PCI chipset tag. */
+ sc->apc.pc_conf_v = (void*) pc;
+ sc->apc.pc_bus_maxdevs = em4k_pci_bus_maxdevs;
+ sc->apc.pc_make_tag = amiga_pci_make_tag;
+ sc->apc.pc_decompose_tag = amiga_pci_decompose_tag;
+ sc->apc.pc_conf_read = em4k_pci_conf_read;
+ sc->apc.pc_conf_write = em4k_pci_conf_write;
+ sc->apc.pc_attach_hook = em4k_pci_attach_hook;
+
+ sc->apc.pc_intr_map = em4k_pci_intr_map;
+ sc->apc.pc_intr_string = amiga_pci_intr_string;
+ sc->apc.pc_intr_establish = amiga_pci_intr_establish;
+ sc->apc.pc_intr_disestablish = amiga_pci_intr_disestablish;
+
+ sc->apc.pc_conf_hook = em4k_pci_conf_hook;
+ sc->apc.pc_conf_interrupt = amiga_pci_conf_interrupt;
+
+ sc->apc.cookie = sc;
+
+#ifdef PCI_NETBSD_CONFIGURE
+ /* XXX: not yet
+ ioext = extent_create("em4kio", 0, EMPB_BRIDGE_SIZE,
+ NULL, 0, EX_NOWAIT);
+
+ memext = extent_create("em4kmem", EMPB_MEM_BASE, EMPB_MEM_END,
+ NULL, 0, EX_NOWAIT);
+
+ pci_configure_bus(pc, ioext, memext, NULL, 0, CACHELINE_SIZE);
+
+ extent_destroy(ioext);
+ extent_destroy(memext);
+ */
+
+#endif /* PCI_NETBSD_CONFIGURE */
+
+ pba.pba_iot = &(sc->pci_io_area);
+ pba.pba_dmat = NULL;
+ pba.pba_dmat64 = NULL;
+ pba.pba_pc = pc;
+ pba.pba_flags = PCI_FLAGS_IO_OKAY;
+
+ if (sc->pci_mem_win_size > 0) {
+ pba.pba_memt = &(sc->pci_mem_win);
+ pba.pba_flags |= PCI_FLAGS_MEM_OKAY;
+ } else
+ pba.pba_memt = NULL;
+
+ pba.pba_bus = 0;
+ pba.pba_bridgetag = NULL;
+
+ /* XXX: set correct window pos */
+ /*bus_space_write_2(sc->setup_area_t, sc->setup_area_h,
+ EMPB_SETUP_WINDOW_OFF, XXX);*/
+
+ em4k_intr_enable(sc);
+
+ config_found_ia(self, "pcibus", &pba, pcibusprint);
+}
+
+static void
+em4k_intr_enable(struct em4k_softc *sc)
+{
+ bus_space_write_1(sc->setup_area_t, sc->setup_area_h,
+ EM4K_SETUP_INTR_OFF, EMPB_INTR_ENABLE);
+}
+
+/*
+ * Try to find a (optional) memory window board.
+ */
+static void
+em4k_find_mem(struct em4k_softc *sc)
+{
+ device_t memdev;
+ struct emmem_softc *mem_sc;
+
+ memdev = device_find_by_xname("emmem0");
+ sc->pci_mem_win_size = 0;
+
+ if (memdev == NULL) {
+ return;
+ }
+
+ mem_sc = device_private(memdev);
+
+ sc->pci_mem_win.base = (bus_addr_t) mem_sc->sc_base;
+ sc->pci_mem_win.absm = &amiga_bus_stride_1swap_abs;
+ sc->pci_mem_win_size = mem_sc->sc_size;
+ sc->pci_mem_win_t = &sc->pci_mem_win;
+
+ if (sc->pci_mem_win_size == 512*1024*1024)
+ sc->pci_mem_win_mask = EM4K_WINDOW_MASK_512M;
+ else if (sc->pci_mem_win_size == 256*1024*1024)
+ sc->pci_mem_win_mask = EM4K_WINDOW_MASK_256M;
+ else /* disable anyway */
+ sc->pci_mem_win_size = 0;
+
+#ifdef EM4K_DEBUG
+ aprint_normal("em4k: found %x b window at %p, switch mask %x\n",
+ sc->pci_mem_win_size, (void*) sc->pci_mem_win.base,
+ sc->pci_mem_win_mask);
+#endif /* EM4K_DEBUG */
+
+}
+
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