9722a61504
boards. This is enough to net-boot to multiuser. Also supported is the SMSC LAN91C111 parts used on the netCF, netDUO and netMMC add-on boards. I'll be putting some instructions on how to boot this on the Gumstix boards online soon. This is still fairly rough and will be refined over time but I felt it was better to get this out there where other people can help out.
389 lines
10 KiB
C
389 lines
10 KiB
C
/*-
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* Copyright (c) 2006 Benno Rice. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <arm/xscale/pxa/pxavar.h>
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#include <arm/xscale/pxa/pxareg.h>
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static void pxa_identify(driver_t *, device_t);
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static int pxa_probe(device_t);
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static int pxa_attach(device_t);
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static int pxa_print_child(device_t, device_t);
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static int pxa_setup_intr(device_t, device_t, struct resource *, int,
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driver_filter_t *, driver_intr_t *, void *, void **);
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static int pxa_read_ivar(device_t, device_t, int, uintptr_t *);
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static struct resource_list * pxa_get_resource_list(device_t, device_t);
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static struct resource * pxa_alloc_resource(device_t, device_t, int,
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int *, u_long, u_long, u_long, u_int);
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static int pxa_release_resource(device_t, device_t, int,
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int, struct resource *);
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static int pxa_activate_resource(device_t, device_t,
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int, int, struct resource *);
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static struct resource * pxa_alloc_gpio_irq(device_t, device_t, int,
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int *, u_long, u_long, u_long, u_int);
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struct obio_device {
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const char *od_name;
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u_long od_base;
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u_long od_size;
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u_int od_irqs[5];
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struct resource_list od_resources;
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};
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static struct obio_device obio_devices[] = {
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{ "icu", PXA2X0_INTCTL_BASE, PXA2X0_INTCTL_SIZE, { 0 } },
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{ "timer", PXA2X0_OST_BASE, PXA2X0_OST_SIZE, { PXA2X0_INT_OST0, PXA2X0_INT_OST1, PXA2X0_INT_OST2, PXA2X0_INT_OST3, 0 } },
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{ "dmac", PXA2X0_DMAC_BASE, PXA2X0_DMAC_SIZE, { PXA2X0_INT_DMA, 0 } },
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{ "gpio", PXA2X0_GPIO_BASE, PXA250_GPIO_SIZE, { PXA2X0_INT_GPIO0, PXA2X0_INT_GPIO1, PXA2X0_INT_GPION, 0 } },
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{ "uart", PXA2X0_FFUART_BASE, PXA2X0_FFUART_SIZE, { PXA2X0_INT_FFUART, 0 } },
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{ "uart", PXA2X0_BTUART_BASE, PXA2X0_BTUART_SIZE, { PXA2X0_INT_BTUART, 0 } },
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{ "uart", PXA2X0_STUART_BASE, PXA2X0_STUART_SIZE, { PXA2X0_INT_STUART, 0 } },
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{ "uart", PXA2X0_HWUART_BASE, PXA2X0_HWUART_SIZE, { PXA2X0_INT_HWUART, 0 } },
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{ "smi", PXA2X0_CS0_START, PXA2X0_CS_SIZE * 6, { 0 } },
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{ NULL, 0, 0, { 0 } }
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};
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void
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pxa_identify(driver_t *driver, device_t parent)
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{
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BUS_ADD_CHILD(parent, 0, "pxa", 0);
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}
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int
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pxa_probe(device_t dev)
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{
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device_set_desc(dev, "XScale PXA On-board IO");
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return (0);
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}
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int
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pxa_attach(device_t dev)
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{
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struct obio_softc *sc;
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struct obio_device *od;
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int i;
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device_t child;
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sc = device_get_softc(dev);
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sc->obio_bst = obio_tag;
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sc->obio_mem.rm_type = RMAN_ARRAY;
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sc->obio_mem.rm_descr = "PXA2X0 OBIO Memory";
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if (rman_init(&sc->obio_mem) != 0)
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panic("pxa_attach: failed to init obio mem rman");
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if (rman_manage_region(&sc->obio_mem, 0, PXA250_PERIPH_END) != 0)
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panic("pxa_attach: failed to set up obio mem rman");
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sc->obio_irq.rm_type = RMAN_ARRAY;
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sc->obio_irq.rm_descr = "PXA2X0 OBIO IRQ";
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if (rman_init(&sc->obio_irq) != 0)
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panic("pxa_attach: failed to init obio irq rman");
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if (rman_manage_region(&sc->obio_irq, 0, 31) != 0)
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panic("pxa_attach: failed to set up obio irq rman (main irqs)");
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if (rman_manage_region(&sc->obio_irq, IRQ_GPIO0, IRQ_GPIO_MAX) != 0)
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panic("pxa_attach: failed to set up obio irq rman (gpio irqs)");
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for (od = obio_devices; od->od_name != NULL; od++) {
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resource_list_init(&od->od_resources);
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resource_list_add(&od->od_resources, SYS_RES_MEMORY, 0,
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od->od_base, od->od_base + od->od_size, od->od_size);
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for (i = 0; od->od_irqs[i] != 0; i++) {
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resource_list_add(&od->od_resources, SYS_RES_IRQ, i,
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od->od_irqs[i], od->od_irqs[i], 1);
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}
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child = device_add_child(dev, od->od_name, -1);
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device_set_ivars(child, od);
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}
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bus_generic_probe(dev);
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bus_generic_attach(dev);
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return (0);
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}
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static int
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pxa_print_child(device_t dev, device_t child)
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{
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struct obio_device *od;
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int retval;
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od = (struct obio_device *)device_get_ivars(child);
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if (od == NULL)
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panic("Unknown device on pxa0");
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retval = 0;
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retval += bus_print_child_header(dev, child);
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retval += resource_list_print_type(&od->od_resources, "at mem",
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SYS_RES_MEMORY, "0x%08lx");
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retval += resource_list_print_type(&od->od_resources, "irq",
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SYS_RES_IRQ, "%ld");
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retval += bus_print_child_footer(dev, child);
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return (retval);
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}
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static int
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pxa_setup_intr(device_t dev, device_t child, struct resource *irq, int flags,
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driver_filter_t *filter, driver_intr_t *ithread, void *arg, void **cookiep)
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{
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struct obio_softc *sc;
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sc = (struct obio_softc *)device_get_softc(dev);
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BUS_SETUP_INTR(device_get_parent(dev), child, irq, flags, filter,
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ithread, arg, cookiep);
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arm_unmask_irq(rman_get_start(irq));
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return (0);
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}
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static int
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pxa_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
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{
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struct obio_device *od;
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od = (struct obio_device *)device_get_ivars(child);
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switch (which) {
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case PXA_IVAR_BASE:
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*((u_long *)result) = od->od_base;
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break;
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default:
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return (ENOENT);
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}
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return (0);
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}
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static struct resource_list *
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pxa_get_resource_list(device_t dev, device_t child)
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{
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struct obio_device *od;
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od = (struct obio_device *)device_get_ivars(child);
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if (od == NULL)
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return (NULL);
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return (&od->od_resources);
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}
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static struct resource *
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pxa_alloc_resource(device_t dev, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct obio_softc *sc;
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struct obio_device *od;
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struct resource *rv;
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struct resource_list *rl;
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struct resource_list_entry *rle;
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struct rman *rm;
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int needactivate;
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sc = (struct obio_softc *)device_get_softc(dev);
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od = (struct obio_device *)device_get_ivars(child);
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rl = &od->od_resources;
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rle = resource_list_find(rl, type, *rid);
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if (rle == NULL) {
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/* We can allocate GPIO-based IRQs lazily. */
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if (type == SYS_RES_IRQ)
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return (pxa_alloc_gpio_irq(dev, child, type, rid,
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start, end, count, flags));
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return (NULL);
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}
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if (rle->res != NULL)
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panic("pxa_alloc_resource: resource is busy");
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switch (type) {
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case SYS_RES_IRQ:
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rm = &sc->obio_irq;
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break;
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case SYS_RES_MEMORY:
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rm = &sc->obio_mem;
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break;
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default:
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return (NULL);
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}
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needactivate = flags & RF_ACTIVE;
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flags &= ~RF_ACTIVE;
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rv = rman_reserve_resource(rm, rle->start, rle->end, rle->count, flags,
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child);
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if (rv == NULL)
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return (NULL);
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rle->res = rv;
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rman_set_rid(rv, *rid);
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if (type == SYS_RES_MEMORY) {
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rman_set_bustag(rv, sc->obio_bst);
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rman_set_bushandle(rv, rle->start);
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}
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if (needactivate) {
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if (bus_activate_resource(child, type, *rid, rv)) {
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rman_release_resource(rv);
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return (NULL);
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}
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}
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return (rv);
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}
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static int
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pxa_release_resource(device_t dev, device_t child, int type, int rid,
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struct resource *r)
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{
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struct obio_device *od;
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struct resource_list *rl;
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struct resource_list_entry *rle;
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od = (struct obio_device *)device_get_ivars(child);
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rl = &od->od_resources;
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if (type == SYS_RES_IOPORT)
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type = SYS_RES_MEMORY;
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rle = resource_list_find(rl, type, rid);
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if (!rle)
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panic("pxa_release_resource: can't find resource");
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if (!rle->res)
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panic("pxa_release_resource: resource entry is not busy");
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rman_release_resource(rle->res);
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rle->res = NULL;
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return (0);
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}
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static int
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pxa_activate_resource(device_t dev, device_t child, int type, int rid,
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struct resource *r)
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{
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return (rman_activate_resource(r));
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}
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static device_method_t pxa_methods[] = {
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DEVMETHOD(device_identify, pxa_identify),
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DEVMETHOD(device_probe, pxa_probe),
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DEVMETHOD(device_attach, pxa_attach),
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DEVMETHOD(bus_print_child, pxa_print_child),
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DEVMETHOD(bus_read_ivar, pxa_read_ivar),
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DEVMETHOD(bus_setup_intr, pxa_setup_intr),
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DEVMETHOD(bus_get_resource_list, pxa_get_resource_list),
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DEVMETHOD(bus_alloc_resource, pxa_alloc_resource),
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DEVMETHOD(bus_release_resource, pxa_release_resource),
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DEVMETHOD(bus_activate_resource, pxa_activate_resource),
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{0, 0}
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};
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static driver_t pxa_driver = {
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"pxa",
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pxa_methods,
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sizeof(struct obio_softc),
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};
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static devclass_t pxa_devclass;
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DRIVER_MODULE(pxa, nexus, pxa_driver, pxa_devclass, 0, 0);
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static struct resource *
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pxa_alloc_gpio_irq(device_t dev, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct obio_softc *sc;
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struct obio_device *od;
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struct resource_list *rl;
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struct resource_list_entry *rle;
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struct resource *rv;
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struct rman *rm;
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int needactivate;
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sc = device_get_softc(dev);
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od = device_get_ivars(child);
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rl = &od->od_resources;
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rm = &sc->obio_irq;
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needactivate = flags & RF_ACTIVE;
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flags &= ~RF_ACTIVE;
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rv = rman_reserve_resource(rm, start, end, count, flags, child);
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if (rv == NULL)
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return (NULL);
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resource_list_add(rl, type, *rid, start, end, count);
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rle = resource_list_find(rl, type, *rid);
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if (rle == NULL)
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panic("pxa_alloc_gpio_irq: unexpectedly can't find resource");
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rle->res = rv;
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rle->start = rman_get_start(rv);
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rle->end = rman_get_end(rv);
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rle->count = count;
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if (needactivate) {
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if (bus_activate_resource(child, type, *rid, rv)) {
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rman_release_resource(rv);
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return (NULL);
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}
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}
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if (bootverbose)
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device_printf(dev, "lazy allocation of irq %ld for %s\n",
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start, device_get_nameunit(child));
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return (rv);
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}
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