svn commit: r191408 - head/sys/arm/at91
Stanislav Sedov
stas at FreeBSD.org
Wed Apr 22 23:54:42 UTC 2009
Author: stas
Date: Wed Apr 22 23:54:41 2009
New Revision: 191408
URL: http://svn.freebsd.org/changeset/base/191408
Log:
- Add the driver for AT91RM9200 CompactFlash controller. The driver
operates in the common memory mode and use polling mode to control
the status of operations as I don't have any board with interrupt
line routed yet. I'll add the GPIO interrupt driven mode as soon
as I get one.
Added:
head/sys/arm/at91/at91_cfata.c (contents, props changed)
Modified:
head/sys/arm/at91/at91.c
head/sys/arm/at91/at91_machdep.c
head/sys/arm/at91/at91rm92reg.h
head/sys/arm/at91/files.at91
Modified: head/sys/arm/at91/at91.c
==============================================================================
--- head/sys/arm/at91/at91.c Wed Apr 22 23:38:57 2009 (r191407)
+++ head/sys/arm/at91/at91.c Wed Apr 22 23:54:41 2009 (r191408)
@@ -418,6 +418,11 @@ struct cpu_devs at91rm9200_devs[] =
AT91RM92_OHCI_BASE, AT91RM92_OHCI_SIZE,
AT91RM92_IRQ_UHP
},
+ {
+ "at91_cfata", 0,
+ AT91RM92_CF_BASE, AT91RM92_CF_SIZE,
+ -1
+ },
{ 0, 0, 0, 0, 0 }
};
@@ -507,6 +512,9 @@ at91_attach(device_t dev)
if (rman_manage_region(&sc->sc_mem_rman, AT91RM92_OHCI_BASE,
AT91RM92_OHCI_BASE + AT91RM92_OHCI_SIZE - 1) != 0)
panic("at91_attach: failed to set up ohci memory");
+ if (rman_manage_region(&sc->sc_mem_rman, AT91RM92_CF_BASE,
+ AT91RM92_CF_BASE + AT91RM92_CF_SIZE - 1) != 0)
+ panic("at91_attach: failed to set up CompactFlash ATA memory");
for (i = 0; i < 32; i++) {
bus_space_write_4(sc->sc_st, sc->sc_sys_sh, IC_SVR +
Added: head/sys/arm/at91/at91_cfata.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/at91/at91_cfata.c Wed Apr 22 23:54:41 2009 (r191408)
@@ -0,0 +1,281 @@
+/*-
+ * Copyright (c) 2008 Deglitch Networks, Stanislav Sedov
+ * All rights reserved.
+ *
+ * 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 AUTHOR ``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 AUTHOR 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.
+ *
+ * Driver for the AT91RM9200 CompactFlash controller operating in a
+ * common memory mode. Interrupts are driven by polling. The driver
+ * implements an ATA bridge and attached ATA channel driver on top
+ * of it.
+ * NOTE WELL: this driver uses polling mode. To achive an acceptable
+ * operating speed you will probably want to use HZ=2000 in kernel
+ * config.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/time.h>
+#include <sys/bus.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+#include <sys/sema.h>
+#include <sys/taskqueue.h>
+#include <vm/uma.h>
+
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/cpufunc.h>
+#include <machine/resource.h>
+#include <machine/intr.h>
+
+#include <sys/ata.h>
+#include <dev/ata/ata-all.h>
+#include <ata_if.h>
+
+struct at91_cfata_softc {
+ device_t dev;
+ struct resource *mem_res;
+ struct resource irq;
+ void (*isr_cb)(void *);
+ void *isr_arg;
+ struct callout tick;
+};
+
+static int at91_cfata_detach(device_t dev);
+static void at91_cfata_callout(void *arg);
+
+static int
+at91_cfata_probe(device_t dev)
+{
+
+ device_set_desc_copy(dev, "AT91RM9200 CompactFlash controller");
+ return (0);
+}
+
+static int
+at91_cfata_attach(device_t dev)
+{
+ struct at91_cfata_softc *sc;
+ int rid, error;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+ rid = 0;
+ error = 0;
+ sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (sc->mem_res == NULL)
+ return (ENOMEM);
+
+ /* XXX: init CF controller? */
+
+ callout_init(&sc->tick, 1); /* Callout to poll the device. */
+ device_add_child(dev, "ata", devclass_find_free_unit(ata_devclass, 0));
+ bus_generic_attach(dev);
+ return (0);
+}
+
+static int
+at91_cfata_detach(device_t dev)
+{
+ struct at91_cfata_softc *sc;
+
+ sc = device_get_softc(dev);
+ bus_generic_detach(sc->dev);
+ if (sc->mem_res != NULL) {
+ bus_release_resource(dev, SYS_RES_MEMORY,
+ rman_get_rid(sc->mem_res), sc->mem_res);
+ sc->mem_res = NULL;
+ }
+ return (0);
+}
+
+static struct resource *
+ata_at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
+ u_long start, u_long end, u_long count, u_int flags)
+{
+ struct at91_cfata_softc *sc = device_get_softc(dev);
+
+ KASSERT(type == SYS_RES_IRQ && *rid == ATA_IRQ_RID,
+ ("[at91_cfata, %d]: illegal resource request (type %u rid %u)",
+ __LINE__, type, *rid));
+ return (&sc->irq);
+}
+
+static int
+ata_at91_release_resource(device_t dev, device_t child, int type, int rid,
+ struct resource *r)
+{
+
+ KASSERT(type == SYS_RES_IRQ && *rid == ATA_IRQ_RID,
+ ("[at91_cfata, %d]: illegal resource request (type %u rid %u)",
+ __LINE__, type, *rid));
+ return (0);
+}
+
+
+static int
+ata_at91_setup_intr(device_t dev, device_t child, struct resource *irq,
+ int flags, driver_filter_t *filt,
+ driver_intr_t *function, void *argument, void **cookiep)
+{
+ struct at91_cfata_softc *sc = device_get_softc(dev);
+
+ KASSERT(sc->isr_cb == NULL,
+ ("[at91_cfata, %d]: overwriting the old handler", __LINE__));
+ sc->isr_cb = function;
+ sc->isr_arg = argument;
+ *cookiep = sc;
+ callout_reset(&sc->tick, 1, at91_cfata_callout, sc);
+ return (0);
+}
+
+static int
+ata_at91_teardown_intr(device_t dev, device_t child, struct resource *irq,
+ void *cookie)
+{
+ struct at91_cfata_softc *sc = device_get_softc(dev);
+
+ sc->isr_cb = NULL;
+ sc->isr_arg = NULL;
+ return (0);
+}
+
+static void
+at91_cfata_callout(void *arg)
+{
+ struct at91_cfata_softc *sc;
+
+ sc = (struct at91_cfata_softc *)arg;
+ if (sc->isr_cb != NULL)
+ sc->isr_cb(sc->isr_arg);
+ callout_reset(&sc->tick, 1, at91_cfata_callout, sc);
+}
+
+static int
+at91_channel_probe(device_t dev)
+{
+ struct ata_channel *ch = device_get_softc(dev);
+
+ ch->unit = 0;
+ ch->flags |= ATA_USE_16BIT | ATA_NO_SLAVE;
+ device_set_desc_copy(dev, "ATA channel 0");
+
+ return (ata_probe(dev));
+}
+
+static int
+at91_channel_attach(device_t dev)
+{
+ struct at91_cfata_softc *sc = device_get_softc(device_get_parent(dev));
+ struct ata_channel *ch = device_get_softc(dev);
+ int i;
+
+ for (i = 0; i < ATA_MAX_RES; i++)
+ ch->r_io[i].res = sc->mem_res;
+
+ /*
+ * CF+ Specification.
+ * 6.1.3 Memory Mapped Addressing.
+ */
+ ch->r_io[ATA_DATA].offset = 0x00;
+ ch->r_io[ATA_FEATURE].offset = 0x01;
+ ch->r_io[ATA_COUNT].offset = 0x02;
+ ch->r_io[ATA_SECTOR].offset = 0x03;
+ ch->r_io[ATA_CYL_LSB].offset = 0x04;
+ ch->r_io[ATA_CYL_MSB].offset = 0x05;
+ ch->r_io[ATA_DRIVE].offset = 0x06;
+ ch->r_io[ATA_COMMAND].offset = 0x07;
+ ch->r_io[ATA_ERROR].offset = 0x01;
+ ch->r_io[ATA_IREASON].offset = 0x02;
+ ch->r_io[ATA_STATUS].offset = 0x07;
+ ch->r_io[ATA_ALTSTAT].offset = 0x0e;
+ ch->r_io[ATA_CONTROL].offset = 0x0e;
+
+ /* Should point at the base of registers. */
+ ch->r_io[ATA_IDX_ADDR].offset = 0x0;
+
+ ata_generic_hw(dev);
+ return (ata_attach(dev));
+}
+
+static device_method_t at91_cfata_methods[] = {
+ /* Device interface. */
+ DEVMETHOD(device_probe, at91_cfata_probe),
+ DEVMETHOD(device_attach, at91_cfata_attach),
+ DEVMETHOD(device_detach, at91_cfata_detach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ /* ATA bus methods. */
+ DEVMETHOD(bus_alloc_resource, ata_at91_alloc_resource),
+ DEVMETHOD(bus_release_resource, ata_at91_release_resource),
+ DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+ DEVMETHOD(bus_deactivate_resource,
+ bus_generic_deactivate_resource),
+ DEVMETHOD(bus_setup_intr, ata_at91_setup_intr),
+ DEVMETHOD(bus_teardown_intr, ata_at91_teardown_intr),
+
+ { 0, 0 }
+};
+
+devclass_t at91_cfata_devclass;
+
+static driver_t at91_cfata_driver = {
+ "at91_cfata",
+ at91_cfata_methods,
+ sizeof(struct at91_cfata_softc),
+};
+
+DRIVER_MODULE(at91_cfata, atmelarm, at91_cfata_driver, at91_cfata_devclass, 0,
+ 0);
+MODULE_VERSION(at91_cfata, 1);
+MODULE_DEPEND(at91_cfata, ata, 1, 1, 1);
+
+/*
+ * ATA channel driver.
+ */
+static device_method_t at91_channel_methods[] = {
+ /* device interface */
+ DEVMETHOD(device_probe, at91_channel_probe),
+ DEVMETHOD(device_attach, at91_channel_attach),
+ DEVMETHOD(device_detach, ata_detach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, ata_suspend),
+ DEVMETHOD(device_resume, ata_resume),
+
+ { 0, 0 }
+};
+
+driver_t at91_channel_driver = {
+ "ata",
+ at91_channel_methods,
+ sizeof(struct ata_channel),
+};
+
+DRIVER_MODULE(ata, at91_cfata, at91_channel_driver, ata_devclass, 0, 0);
Modified: head/sys/arm/at91/at91_machdep.c
==============================================================================
--- head/sys/arm/at91/at91_machdep.c Wed Apr 22 23:38:57 2009 (r191407)
+++ head/sys/arm/at91/at91_machdep.c Wed Apr 22 23:54:41 2009 (r191408)
@@ -179,6 +179,14 @@ static const struct pmap_devmap at91rm92
PTE_NOCACHE,
},
{
+ /* CompactFlash controller. */
+ AT91RM92_CF_BASE,
+ AT91RM92_CF_PA_BASE,
+ AT91RM92_CF_SIZE,
+ VM_PROT_READ|VM_PROT_WRITE,
+ PTE_NOCACHE,
+ },
+ {
0,
0,
0,
Modified: head/sys/arm/at91/at91rm92reg.h
==============================================================================
--- head/sys/arm/at91/at91rm92reg.h Wed Apr 22 23:38:57 2009 (r191407)
+++ head/sys/arm/at91/at91rm92reg.h Wed Apr 22 23:54:41 2009 (r191408)
@@ -341,6 +341,10 @@
#define AT91RM92_OHCI_PA_BASE 0x00300000
#define AT91RM92_OHCI_SIZE 0x00100000
+#define AT91RM92_CF_BASE 0xdfd00000
+#define AT91RM92_CF_PA_BASE 0x51400000
+#define AT91RM92_CF_SIZE 0x00100000
+
#ifndef AT91C_MASTER_CLOCK
#define AT91C_MASTER_CLOCK 60000000
#endif
Modified: head/sys/arm/at91/files.at91
==============================================================================
--- head/sys/arm/at91/files.at91 Wed Apr 22 23:38:57 2009 (r191407)
+++ head/sys/arm/at91/files.at91 Wed Apr 22 23:54:41 2009 (r191408)
@@ -3,6 +3,7 @@ arm/arm/cpufunc_asm_arm9.S standard
arm/arm/irq_dispatch.S standard
arm/at91/at91_machdep.c standard
arm/at91/at91.c standard
+arm/at91/at91_cfata.c optional at91_cfata
arm/at91/at91_st.c standard
arm/at91/at91_mci.c optional at91_mci
arm/at91/at91_pio.c standard
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