| Current Path : /sys/arm/econa/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/arm/econa/econa.c |
/*-
* Copyright (c) 2009 Yohanes Nugroho <yohanes@gmail.com>
* 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 AUTHOR 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/arm/econa/econa.c 201468 2010-01-04 03:35:45Z rpaulo $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/pmap.h>
#include <vm/vm_page.h>
#include <vm/vm_extern.h>
#define _ARM32_BUS_DMA_PRIVATE
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/resource.h>
#include "econa_reg.h"
#include "econa_var.h"
static struct econa_softc *econa_softc;
unsigned int CPU_clock = 200000000;
unsigned int AHB_clock;
unsigned int APB_clock;
bs_protos(generic);
bs_protos(generic_armv4);
struct bus_space econa_bs_tag = {
/* cookie */
(void *) 0,
/* mapping/unmapping */
generic_bs_map,
generic_bs_unmap,
generic_bs_subregion,
/* allocation/deallocation */
generic_bs_alloc,
generic_bs_free,
/* barrier */
generic_bs_barrier,
/* read (single) */
generic_bs_r_1,
generic_armv4_bs_r_2,
generic_bs_r_4,
NULL,
/* read multiple */
generic_bs_rm_1,
generic_armv4_bs_rm_2,
generic_bs_rm_4,
NULL,
/* read region */
generic_bs_rr_1,
generic_armv4_bs_rr_2,
generic_bs_rr_4,
NULL,
/* write (single) */
generic_bs_w_1,
generic_armv4_bs_w_2,
generic_bs_w_4,
NULL,
/* write multiple */
generic_bs_wm_1,
generic_armv4_bs_wm_2,
generic_bs_wm_4,
NULL,
/* write region */
NULL,
NULL,
NULL,
NULL,
/* set multiple */
NULL,
NULL,
NULL,
NULL,
/* set region */
NULL,
NULL,
NULL,
NULL,
/* copy */
NULL,
NULL,
NULL,
NULL,
/* read (single) stream */
NULL,
NULL,
NULL,
NULL,
/* read multiple stream */
NULL,
generic_armv4_bs_rm_2,
NULL,
NULL,
/* read region stream */
NULL,
NULL,
NULL,
NULL,
/* write (single) stream */
NULL,
NULL,
NULL,
NULL,
/* write multiple stream */
NULL,
generic_armv4_bs_wm_2,
NULL,
NULL,
/* write region stream */
NULL,
NULL,
NULL,
NULL
};
bus_space_tag_t obio_tag = &econa_bs_tag;
static int
econa_probe(device_t dev)
{
device_set_desc(dev, "ECONA device bus");
return (0);
}
static void
econa_identify(driver_t *drv, device_t parent)
{
BUS_ADD_CHILD(parent, 0, "econaarm", 0);
}
struct arm32_dma_range *
bus_dma_get_range(void)
{
return (NULL);
}
int
bus_dma_get_range_nb(void)
{
return (0);
}
extern void irq_entry(void);
static void
econa_add_child(device_t dev, int prio, const char *name, int unit,
bus_addr_t addr, bus_size_t size,
int irq0, int irq1,
int irq2, int irq3, int irq4)
{
device_t kid;
struct econa_ivar *ivar;
kid = device_add_child_ordered(dev, prio, name, unit);
if (kid == NULL) {
printf("Can't add child %s%d ordered\n", name, unit);
return;
}
ivar = malloc(sizeof(*ivar), M_DEVBUF, M_NOWAIT | M_ZERO);
if (ivar == NULL) {
device_delete_child(dev, kid);
return;
}
device_set_ivars(kid, ivar);
resource_list_init(&ivar->resources);
if (irq0 != -1)
bus_set_resource(kid, SYS_RES_IRQ, 0, irq0, 1);
if (irq1 != 0)
bus_set_resource(kid, SYS_RES_IRQ, 1, irq1, 1);
if (irq2 != 0)
bus_set_resource(kid, SYS_RES_IRQ, 2, irq2, 1);
if (irq3 != 0)
bus_set_resource(kid, SYS_RES_IRQ, 3, irq3, 1);
if (irq4 != 0)
bus_set_resource(kid, SYS_RES_IRQ, 4, irq4, 1);
if (addr != 0)
bus_set_resource(kid, SYS_RES_MEMORY, 0, addr, size);
}
struct cpu_devs
{
const char *name;
int unit;
bus_addr_t mem_base;
bus_size_t mem_len;
int irq0;
int irq1;
int irq2;
int irq3;
int irq4;
};
struct cpu_devs econarm_devs[] =
{
{
"econa_ic", 0,
ECONA_IO_BASE + ECONA_PIC_BASE, ECONA_PIC_SIZE,
0
},
{
"system", 0,
ECONA_IO_BASE + ECONA_SYSTEM_BASE, ECONA_SYSTEM_SIZE,
0
},
{
"uart", 0,
ECONA_IO_BASE + ECONA_UART_BASE, ECONA_UART_SIZE,
ECONA_IRQ_UART
},
{
"timer", 0,
ECONA_IO_BASE + ECONA_TIMER_BASE, ECONA_TIMER_SIZE,
ECONA_IRQ_TIMER_1, ECONA_IRQ_TIMER_2
},
{
"ohci", 0,
ECONA_OHCI_VBASE, ECONA_OHCI_SIZE,
ECONA_IRQ_OHCI
},
{
"ehci", 0,
ECONA_EHCI_VBASE, ECONA_EHCI_SIZE,
ECONA_IRQ_EHCI
},
{
"cfi", 0,
ECONA_CFI_VBASE, ECONA_CFI_SIZE,
0
},
{
"ece", 0,
ECONA_IO_BASE + ECONA_NET_BASE, ECONA_NET_SIZE,
ECONA_IRQ_STATUS,
ECONA_IRQ_TSTC, ECONA_IRQ_FSRC,
ECONA_IRQ_TSQE, ECONA_IRQ_FSQF,
},
{ 0, 0, 0, 0, 0, 0, 0, 0, 0 }
};
static void
econa_cpu_add_builtin_children(device_t dev, struct econa_softc *sc)
{
int i;
struct cpu_devs *walker;
for (i = 0, walker = econarm_devs; walker->name; i++, walker++) {
econa_add_child(dev, i, walker->name, walker->unit,
walker->mem_base, walker->mem_len,
walker->irq0,walker->irq1, walker->irq2,
walker->irq3, walker->irq4);
}
}
struct intc_trigger_t {
int mode;
int level;
};
static struct intc_trigger_t intc_trigger_table[] = {
{INTC_EDGE_TRIGGER, INTC_RISING_EDGE},
{INTC_EDGE_TRIGGER, INTC_RISING_EDGE},
{INTC_EDGE_TRIGGER, INTC_FALLING_EDGE},
{INTC_EDGE_TRIGGER, INTC_RISING_EDGE},
{INTC_TRIGGER_UNKNOWN, INTC_TRIGGER_UNKNOWN},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_LOW},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_LOW},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_HIGH},
{INTC_TRIGGER_UNKNOWN, INTC_TRIGGER_UNKNOWN},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_HIGH},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_HIGH},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_HIGH},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_HIGH},
{INTC_TRIGGER_UNKNOWN, INTC_TRIGGER_UNKNOWN},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_HIGH},
{INTC_EDGE_TRIGGER, INTC_FALLING_EDGE},
{INTC_TRIGGER_UNKNOWN, INTC_TRIGGER_UNKNOWN},
{INTC_TRIGGER_UNKNOWN, INTC_TRIGGER_UNKNOWN},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_HIGH},
{INTC_EDGE_TRIGGER, INTC_RISING_EDGE},
{INTC_EDGE_TRIGGER, INTC_RISING_EDGE},
{INTC_EDGE_TRIGGER, INTC_RISING_EDGE},
{INTC_EDGE_TRIGGER, INTC_RISING_EDGE},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_LOW},
{INTC_LEVEL_TRIGGER, INTC_ACTIVE_LOW},
};
static inline uint32_t
read_4(struct econa_softc *sc, bus_size_t off)
{
return bus_space_read_4(sc->ec_st, sc->ec_sys_sh, off);
}
static inline void
write_4(struct econa_softc *sc, bus_size_t off, uint32_t val)
{
return bus_space_write_4(sc->ec_st, sc->ec_sys_sh, off, val);
}
static inline uint32_t
system_read_4(struct econa_softc *sc, bus_size_t off)
{
return bus_space_read_4(sc->ec_st, sc->ec_system_sh, off);
}
static inline void
system_write_4(struct econa_softc *sc, bus_size_t off, uint32_t val)
{
return bus_space_write_4(sc->ec_st, sc->ec_system_sh, off, val);
}
static inline void
econa_set_irq_mode(struct econa_softc * sc, unsigned int irq,
unsigned int mode)
{
unsigned int val;
if ((mode != INTC_LEVEL_TRIGGER) && (mode != INTC_EDGE_TRIGGER))
return;
val = read_4(sc, INTC_INTERRUPT_TRIGGER_MODE_REG_OFFSET);
if (mode == INTC_LEVEL_TRIGGER) {
if (val & (1UL << irq)) {
val &= ~(1UL << irq);
write_4(sc, INTC_INTERRUPT_TRIGGER_MODE_REG_OFFSET,
val);
}
} else {
if (!(val & (1UL << irq))) {
val |= (1UL << irq);
write_4(sc, INTC_INTERRUPT_TRIGGER_MODE_REG_OFFSET,
val);
}
}
}
/*
* Configure interrupt trigger level to be Active High/Low
* or Rising/Falling Edge
*/
static inline void
econa_set_irq_level(struct econa_softc * sc,
unsigned int irq, unsigned int level)
{
unsigned int val;
if ((level != INTC_ACTIVE_HIGH) &&
(level != INTC_ACTIVE_LOW) &&
(level != INTC_RISING_EDGE) &&
(level != INTC_FALLING_EDGE)) {
return;
}
val = read_4(sc, INTC_INTERRUPT_TRIGGER_LEVEL_REG_OFFSET);
if ((level == INTC_ACTIVE_HIGH) || (level == INTC_RISING_EDGE)) {
if (val & (1UL << irq)) {
val &= ~(1UL << irq);
write_4(sc, INTC_INTERRUPT_TRIGGER_LEVEL_REG_OFFSET,
val);
}
} else {
if (!(val & (1UL << irq))) {
val |= (1UL << irq);
write_4(sc, INTC_INTERRUPT_TRIGGER_LEVEL_REG_OFFSET,
val);
}
}
}
static void
get_system_clock(void)
{
uint32_t sclock = system_read_4(econa_softc, SYSTEM_CLOCK);
sclock = (sclock >> 6) & 0x03;
switch (sclock) {
case 0:
CPU_clock = 175000000;
break;
case 1:
CPU_clock = 200000000;
break;
case 2:
CPU_clock = 225000000;
break;
case 3:
CPU_clock = 250000000;
break;
}
AHB_clock = CPU_clock >> 1;
APB_clock = AHB_clock >> 1;
}
static int
econa_attach(device_t dev)
{
struct econa_softc *sc = device_get_softc(dev);
int i;
econa_softc = sc;
sc->ec_st = &econa_bs_tag;
sc->ec_sh = ECONA_IO_BASE;
sc->dev = dev;
if (bus_space_subregion(sc->ec_st, sc->ec_sh, ECONA_PIC_BASE,
ECONA_PIC_SIZE, &sc->ec_sys_sh) != 0)
panic("Unable to map IRQ registers");
if (bus_space_subregion(sc->ec_st, sc->ec_sh, ECONA_SYSTEM_BASE,
ECONA_SYSTEM_SIZE, &sc->ec_system_sh) != 0)
panic("Unable to map IRQ registers");
sc->ec_irq_rman.rm_type = RMAN_ARRAY;
sc->ec_irq_rman.rm_descr = "ECONA IRQs";
sc->ec_mem_rman.rm_type = RMAN_ARRAY;
sc->ec_mem_rman.rm_descr = "ECONA Memory";
if (rman_init(&sc->ec_irq_rman) != 0 ||
rman_manage_region(&sc->ec_irq_rman, 0, 31) != 0)
panic("econa_attach: failed to set up IRQ rman");
if (rman_init(&sc->ec_mem_rman) != 0 ||
rman_manage_region(&sc->ec_mem_rman, 0,
~0) != 0)
panic("econa_attach: failed to set up memory rman");
write_4(sc, INTC_INTERRUPT_CLEAR_EDGE_TRIGGER_REG_OFFSET, 0xffffffff);
write_4(sc, INTC_INTERRUPT_MASK_REG_OFFSET, 0xffffffff);
write_4(sc, INTC_FIQ_MODE_SELECT_REG_OFFSET, 0);
/*initialize irq*/
for (i = 0; i < 32; i++) {
if (intc_trigger_table[i].mode != INTC_TRIGGER_UNKNOWN) {
econa_set_irq_mode(sc,i, intc_trigger_table[i].mode);
econa_set_irq_level(sc, i, intc_trigger_table[i].level);
}
}
get_system_clock();
econa_cpu_add_builtin_children(dev, sc);
bus_generic_probe(dev);
bus_generic_attach(dev);
enable_interrupts(I32_bit | F32_bit);
return (0);
}
static struct resource *
econa_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 econa_softc *sc = device_get_softc(dev);
struct resource_list_entry *rle;
struct econa_ivar *ivar = device_get_ivars(child);
struct resource_list *rl = &ivar->resources;
if (device_get_parent(child) != dev)
return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
type, rid, start, end, count, flags));
rle = resource_list_find(rl, type, *rid);
if (rle == NULL) {
return (NULL);
}
if (rle->res)
panic("Resource rid %d type %d already in use", *rid, type);
if (start == 0UL && end == ~0UL) {
start = rle->start;
count = ulmax(count, rle->count);
end = ulmax(rle->end, start + count - 1);
}
switch (type)
{
case SYS_RES_IRQ:
rle->res = rman_reserve_resource(&sc->ec_irq_rman,
start, end, count, flags, child);
break;
case SYS_RES_MEMORY:
rle->res = rman_reserve_resource(&sc->ec_mem_rman,
start, end, count, flags, child);
if (rle->res != NULL) {
rman_set_bustag(rle->res, &econa_bs_tag);
rman_set_bushandle(rle->res, start);
}
break;
}
if (rle->res) {
rle->start = rman_get_start(rle->res);
rle->end = rman_get_end(rle->res);
rle->count = count;
rman_set_rid(rle->res, *rid);
}
return (rle->res);
}
static struct resource_list *
econa_get_resource_list(device_t dev, device_t child)
{
struct econa_ivar *ivar;
ivar = device_get_ivars(child);
return (&(ivar->resources));
}
static int
econa_release_resource(device_t dev, device_t child, int type,
int rid, struct resource *r)
{
struct resource_list *rl;
struct resource_list_entry *rle;
rl = econa_get_resource_list(dev, child);
if (rl == NULL)
return (EINVAL);
rle = resource_list_find(rl, type, rid);
if (rle == NULL)
return (EINVAL);
rman_release_resource(r);
rle->res = NULL;
return (0);
}
static int
econa_setup_intr(device_t dev, device_t child,
struct resource *ires, int flags, driver_filter_t *filt,
driver_intr_t *intr, void *arg, void **cookiep)
{
if (rman_get_start(ires) == ECONA_IRQ_SYSTEM && filt == NULL)
panic("All system interrupt ISRs must be FILTER");
BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt,
intr, arg, cookiep);
arm_unmask_irq(rman_get_start(ires));
return (0);
}
static int
econa_teardown_intr(device_t dev, device_t child, struct resource *res,
void *cookie)
{
return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, res, cookie));
}
static int
econa_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
return (rman_activate_resource(r));
}
static int
econa_print_child(device_t dev, device_t child)
{
struct econa_ivar *ivars;
struct resource_list *rl;
int retval = 0;
ivars = device_get_ivars(child);
rl = &ivars->resources;
retval += bus_print_child_header(dev, child);
retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
if (device_get_flags(dev))
retval += printf(" flags %#x", device_get_flags(dev));
retval += bus_print_child_footer(dev, child);
return (retval);
}
void
arm_mask_irq(uintptr_t nb)
{
unsigned int value;
value = read_4(econa_softc,INTC_INTERRUPT_MASK_REG_OFFSET) | 1<<nb;
write_4(econa_softc, INTC_INTERRUPT_MASK_REG_OFFSET, value);
}
void
arm_unmask_irq(uintptr_t nb)
{
unsigned int value;
value = read_4(econa_softc,
INTC_INTERRUPT_CLEAR_EDGE_TRIGGER_REG_OFFSET) | (1 << nb);
write_4(econa_softc,
INTC_INTERRUPT_CLEAR_EDGE_TRIGGER_REG_OFFSET, value);
value = read_4(econa_softc, INTC_INTERRUPT_MASK_REG_OFFSET)& ~(1 << nb);
write_4(econa_softc, INTC_INTERRUPT_MASK_REG_OFFSET, value);
}
int
arm_get_next_irq(int x)
{
int irq;
irq = read_4(econa_softc, INTC_INTERRUPT_STATUS_REG_OFFSET) &
~(read_4(econa_softc, INTC_INTERRUPT_MASK_REG_OFFSET));
if (irq!=0) {
return (ffs(irq) - 1);
}
return (-1);
}
void
cpu_reset(void)
{
uint32_t control;
control = system_read_4(econa_softc, RESET_CONTROL);
control |= GLOBAL_RESET;
system_write_4(econa_softc, RESET_CONTROL, control);
control = system_read_4(econa_softc, RESET_CONTROL);
control &= (~(GLOBAL_RESET));
system_write_4(econa_softc, RESET_CONTROL, control);
while (1);
}
void
power_on_network_interface(void)
{
uint32_t cfg_reg;
int ii;
cfg_reg = system_read_4(econa_softc, RESET_CONTROL);
cfg_reg |= NET_INTERFACE_RESET;
/* set reset bit to HIGH active; */
system_write_4(econa_softc, RESET_CONTROL, cfg_reg);
/*pulse delay */
for (ii = 0; ii < 0xFFF; ii++)
DELAY(100);
/* set reset bit to LOW active; */
cfg_reg = system_read_4(econa_softc, RESET_CONTROL);
cfg_reg &= ~(NET_INTERFACE_RESET);
system_write_4(econa_softc, RESET_CONTROL, cfg_reg);
/*pulse delay */
for (ii = 0; ii < 0xFFF; ii++)
DELAY(100);
cfg_reg = system_read_4(econa_softc, RESET_CONTROL);
cfg_reg |= NET_INTERFACE_RESET;
/* set reset bit to HIGH active; */
system_write_4(econa_softc, RESET_CONTROL, cfg_reg);
}
unsigned int
get_tclk(void)
{
return CPU_clock;
}
static device_method_t econa_methods[] = {
DEVMETHOD(device_probe, econa_probe),
DEVMETHOD(device_attach, econa_attach),
DEVMETHOD(device_identify, econa_identify),
DEVMETHOD(bus_alloc_resource, econa_alloc_resource),
DEVMETHOD(bus_setup_intr, econa_setup_intr),
DEVMETHOD(bus_teardown_intr, econa_teardown_intr),
DEVMETHOD(bus_activate_resource, econa_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_get_resource_list, econa_get_resource_list),
DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
DEVMETHOD(bus_release_resource, econa_release_resource),
DEVMETHOD(bus_print_child, econa_print_child),
{0, 0},
};
static driver_t econa_driver = {
"econaarm",
econa_methods,
sizeof(struct econa_softc),
};
static devclass_t econa_devclass;
DRIVER_MODULE(econaarm, nexus, econa_driver, econa_devclass, 0, 0);