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/*-
* Copyright (C) 2011 glevand (geoffrey.levand@mail.ru)
* 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/powerpc/ps3/ps3disk.c 223461 2011-06-23 03:37:25Z nwhitehorn $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/disk.h>
#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/pio.h>
#include <machine/bus.h>
#include <machine/platform.h>
#include <machine/pmap.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <geom/geom_disk.h>
#include "ps3bus.h"
#include "ps3-hvcall.h"
#define PS3DISK_LOCK_INIT(_sc) \
mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), "ps3disk", MTX_DEF)
#define PS3DISK_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
#define PS3DISK_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
#define PS3DISK_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
#define PS3DISK_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
#define PS3DISK_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
#define LV1_STORAGE_ATA_HDDOUT 0x23
SYSCTL_NODE(_hw, OID_AUTO, ps3disk, CTLFLAG_RD, 0, "PS3 Disk driver parameters");
#ifdef PS3DISK_DEBUG
static int ps3disk_debug = 0;
SYSCTL_INT(_hw_ps3disk, OID_AUTO, debug, CTLFLAG_RW, &ps3disk_debug,
0, "control debugging printfs");
TUNABLE_INT("hw.ps3disk.debug", &ps3disk_debug);
enum {
PS3DISK_DEBUG_INTR = 0x00000001,
PS3DISK_DEBUG_TASK = 0x00000002,
PS3DISK_DEBUG_READ = 0x00000004,
PS3DISK_DEBUG_WRITE = 0x00000008,
PS3DISK_DEBUG_FLUSH = 0x00000010,
PS3DISK_DEBUG_ANY = 0xffffffff
};
#define DPRINTF(sc, m, fmt, ...) \
do { \
if (sc->sc_debug & (m)) \
printf(fmt, __VA_ARGS__); \
} while (0)
#else
#define DPRINTF(sc, m, fmt, ...)
#endif
struct ps3disk_region {
uint64_t r_id;
uint64_t r_start;
uint64_t r_size;
uint64_t r_flags;
};
struct ps3disk_softc {
device_t sc_dev;
struct mtx sc_mtx;
uint64_t sc_blksize;
uint64_t sc_nblocks;
uint64_t sc_nregs;
struct ps3disk_region *sc_reg;
int sc_irqid;
struct resource *sc_irq;
void *sc_irqctx;
struct disk **sc_disk;
struct bio_queue_head sc_bioq;
struct bio_queue_head sc_deferredq;
struct proc *sc_task;
bus_dma_tag_t sc_dmatag;
int sc_running;
int sc_debug;
};
static int ps3disk_open(struct disk *dp);
static int ps3disk_close(struct disk *dp);
static void ps3disk_strategy(struct bio *bp);
static void ps3disk_task(void *arg);
static void ps3disk_intr(void *arg);
static int ps3disk_get_disk_geometry(struct ps3disk_softc *sc);
static int ps3disk_enum_regions(struct ps3disk_softc *sc);
static void ps3disk_transfer(void *arg, bus_dma_segment_t *segs, int nsegs,
int error);
static void ps3disk_sysctlattach(struct ps3disk_softc *sc);
static MALLOC_DEFINE(M_PS3DISK, "ps3disk", "PS3 Disk");
static int
ps3disk_probe(device_t dev)
{
if (ps3bus_get_bustype(dev) != PS3_BUSTYPE_STORAGE ||
ps3bus_get_devtype(dev) != PS3_DEVTYPE_DISK)
return (ENXIO);
device_set_desc(dev, "Playstation 3 Disk");
return (BUS_PROBE_SPECIFIC);
}
static int
ps3disk_attach(device_t dev)
{
struct ps3disk_softc *sc;
struct disk *d;
intmax_t mb;
uint64_t junk;
char unit;
int i, err;
sc = device_get_softc(dev);
sc->sc_dev = dev;
PS3DISK_LOCK_INIT(sc);
err = ps3disk_get_disk_geometry(sc);
if (err) {
device_printf(dev, "Could not get disk geometry\n");
err = ENXIO;
goto fail_destroy_lock;
}
device_printf(dev, "block size %lu total blocks %lu\n",
sc->sc_blksize, sc->sc_nblocks);
err = ps3disk_enum_regions(sc);
if (err) {
device_printf(dev, "Could not enumerate disk regions\n");
err = ENXIO;
goto fail_destroy_lock;
}
device_printf(dev, "Found %lu regions\n", sc->sc_nregs);
if (!sc->sc_nregs) {
err = ENXIO;
goto fail_destroy_lock;
}
/* Setup interrupt handler */
sc->sc_irqid = 0;
sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irqid,
RF_ACTIVE);
if (!sc->sc_irq) {
device_printf(dev, "Could not allocate IRQ\n");
err = ENXIO;
goto fail_free_regions;
}
err = bus_setup_intr(dev, sc->sc_irq,
INTR_TYPE_BIO | INTR_MPSAFE | INTR_ENTROPY,
NULL, ps3disk_intr, sc, &sc->sc_irqctx);
if (err) {
device_printf(dev, "Could not setup IRQ\n");
err = ENXIO;
goto fail_release_intr;
}
/* Setup DMA */
err = bus_dma_tag_create(bus_get_dma_tag(dev), 4096, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
BUS_SPACE_UNRESTRICTED, 1, PAGE_SIZE, 0,
busdma_lock_mutex, &sc->sc_mtx, &sc->sc_dmatag);
if (err) {
device_printf(dev, "Could not create DMA tag\n");
err = ENXIO;
goto fail_teardown_intr;
}
/* Setup disks */
sc->sc_disk = malloc(sc->sc_nregs * sizeof(struct disk *),
M_PS3DISK, M_ZERO | M_WAITOK);
if (!sc->sc_disk) {
device_printf(dev, "Could not allocate disk(s)\n");
err = ENOMEM;
goto fail_teardown_intr;
}
for (i = 0; i < sc->sc_nregs; i++) {
struct ps3disk_region *rp = &sc->sc_reg[i];
d = sc->sc_disk[i] = disk_alloc();
d->d_open = ps3disk_open;
d->d_close = ps3disk_close;
d->d_strategy = ps3disk_strategy;
d->d_name = "ps3disk";
d->d_drv1 = sc;
d->d_maxsize = PAGE_SIZE;
d->d_sectorsize = sc->sc_blksize;
d->d_unit = i;
d->d_mediasize = sc->sc_reg[i].r_size * sc->sc_blksize;
d->d_flags |= DISKFLAG_CANFLUSHCACHE;
mb = d->d_mediasize >> 20;
unit = 'M';
if (mb >= 10240) {
unit = 'G';
mb /= 1024;
}
/* Test to see if we can read this region */
err = lv1_storage_read(ps3bus_get_device(dev), d->d_unit,
0, 0, rp->r_flags, 0, &junk);
device_printf(dev, "region %d %ju%cB%s\n", i, mb, unit,
(err == LV1_DENIED_BY_POLICY) ? " (hypervisor protected)"
: "");
if (err != LV1_DENIED_BY_POLICY)
disk_create(d, DISK_VERSION);
}
err = 0;
bioq_init(&sc->sc_bioq);
bioq_init(&sc->sc_deferredq);
kproc_create(&ps3disk_task, sc, &sc->sc_task, 0, 0, "ps3disk");
ps3disk_sysctlattach(sc);
sc->sc_running = 1;
return (0);
fail_teardown_intr:
bus_teardown_intr(dev, sc->sc_irq, sc->sc_irqctx);
fail_release_intr:
bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqid, sc->sc_irq);
fail_free_regions:
free(sc->sc_reg, M_PS3DISK);
fail_destroy_lock:
PS3DISK_LOCK_DESTROY(sc);
return (err);
}
static int
ps3disk_detach(device_t dev)
{
struct ps3disk_softc *sc = device_get_softc(dev);
int i;
for (i = 0; i < sc->sc_nregs; i++)
disk_destroy(sc->sc_disk[i]);
bus_dma_tag_destroy(sc->sc_dmatag);
bus_teardown_intr(dev, sc->sc_irq, sc->sc_irqctx);
bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqid, sc->sc_irq);
free(sc->sc_disk, M_PS3DISK);
free(sc->sc_reg, M_PS3DISK);
PS3DISK_LOCK_DESTROY(sc);
return (0);
}
static int
ps3disk_open(struct disk *dp)
{
return (0);
}
static int
ps3disk_close(struct disk *dp)
{
return (0);
}
/* Process deferred blocks */
static void
ps3disk_task(void *arg)
{
struct ps3disk_softc *sc = (struct ps3disk_softc *) arg;
struct bio *bp;
while (1) {
kproc_suspend_check(sc->sc_task);
tsleep(&sc->sc_deferredq, PRIBIO, "ps3disk", 10);
PS3DISK_LOCK(sc);
bp = bioq_takefirst(&sc->sc_deferredq);
PS3DISK_UNLOCK(sc);
if (bp == NULL)
continue;
if (bp->bio_driver1 != NULL) {
bus_dmamap_unload(sc->sc_dmatag, (bus_dmamap_t)
bp->bio_driver1);
bus_dmamap_destroy(sc->sc_dmatag, (bus_dmamap_t)
bp->bio_driver1);
}
ps3disk_strategy(bp);
}
kproc_exit(0);
}
static void
ps3disk_strategy(struct bio *bp)
{
struct ps3disk_softc *sc = (struct ps3disk_softc *)bp->bio_disk->d_drv1;
int err;
if (sc == NULL) {
bp->bio_flags |= BIO_ERROR;
bp->bio_error = EINVAL;
biodone(bp);
return;
}
PS3DISK_LOCK(sc);
bp->bio_resid = bp->bio_bcount;
bioq_insert_tail(&sc->sc_bioq, bp);
DPRINTF(sc, PS3DISK_DEBUG_TASK, "%s: bio_cmd 0x%02x\n",
__func__, bp->bio_cmd);
err = 0;
if (bp->bio_cmd == BIO_FLUSH) {
bp->bio_driver1 = 0;
err = lv1_storage_send_device_command(
ps3bus_get_device(sc->sc_dev), LV1_STORAGE_ATA_HDDOUT,
0, 0, 0, 0, (uint64_t *)&bp->bio_driver2);
if (err == LV1_BUSY)
err = EAGAIN;
} else if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) {
if (bp->bio_bcount % sc->sc_blksize != 0) {
err = EINVAL;
} else {
bus_dmamap_create(sc->sc_dmatag, BUS_DMA_COHERENT,
(bus_dmamap_t *)(&bp->bio_driver1));
err = bus_dmamap_load(sc->sc_dmatag,
(bus_dmamap_t)(bp->bio_driver1), bp->bio_data,
bp->bio_bcount, ps3disk_transfer, bp, 0);
if (err == EINPROGRESS)
err = 0;
}
} else {
err = EINVAL;
}
if (err == EAGAIN) {
bioq_remove(&sc->sc_bioq, bp);
bioq_insert_tail(&sc->sc_deferredq, bp);
} else if (err != 0) {
bp->bio_error = err;
bp->bio_flags |= BIO_ERROR;
bioq_remove(&sc->sc_bioq, bp);
disk_err(bp, "hard error", -1, 1);
biodone(bp);
}
PS3DISK_UNLOCK(sc);
}
static void
ps3disk_intr(void *arg)
{
struct ps3disk_softc *sc = (struct ps3disk_softc *) arg;
device_t dev = sc->sc_dev;
uint64_t devid = ps3bus_get_device(dev);
struct bio *bp;
uint64_t tag, status;
if (lv1_storage_get_async_status(devid, &tag, &status) != 0)
return;
PS3DISK_LOCK(sc);
DPRINTF(sc, PS3DISK_DEBUG_INTR, "%s: tag 0x%016lx "
"status 0x%016lx\n", __func__, tag, status);
/* Locate the matching request */
TAILQ_FOREACH(bp, &sc->sc_bioq.queue, bio_queue) {
if ((uint64_t)bp->bio_driver2 != tag)
continue;
if (status != 0) {
device_printf(sc->sc_dev, "%s error (%#lx)\n",
(bp->bio_cmd == BIO_READ) ? "Read" : "Write",
status);
bp->bio_error = EIO;
bp->bio_flags |= BIO_ERROR;
} else {
bp->bio_error = 0;
bp->bio_resid = 0;
bp->bio_flags |= BIO_DONE;
}
if (bp->bio_driver1 != NULL) {
if (bp->bio_cmd == BIO_READ)
bus_dmamap_sync(sc->sc_dmatag, (bus_dmamap_t)
bp->bio_driver1, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->sc_dmatag, (bus_dmamap_t)
bp->bio_driver1);
bus_dmamap_destroy(sc->sc_dmatag, (bus_dmamap_t)
bp->bio_driver1);
}
bioq_remove(&sc->sc_bioq, bp);
biodone(bp);
break;
}
if (bioq_first(&sc->sc_deferredq) != NULL)
wakeup(&sc->sc_deferredq);
PS3DISK_UNLOCK(sc);
}
static int
ps3disk_get_disk_geometry(struct ps3disk_softc *sc)
{
device_t dev = sc->sc_dev;
uint64_t bus_index = ps3bus_get_busidx(dev);
uint64_t dev_index = ps3bus_get_devidx(dev);
uint64_t junk;
int err;
err = lv1_get_repository_node_value(PS3_LPAR_ID_PME,
(lv1_repository_string("bus") >> 32) | bus_index,
lv1_repository_string("dev") | dev_index,
lv1_repository_string("blk_size"), 0, &sc->sc_blksize, &junk);
if (err) {
device_printf(dev, "Could not get block size (0x%08x)\n", err);
return (ENXIO);
}
err = lv1_get_repository_node_value(PS3_LPAR_ID_PME,
(lv1_repository_string("bus") >> 32) | bus_index,
lv1_repository_string("dev") | dev_index,
lv1_repository_string("n_blocks"), 0, &sc->sc_nblocks, &junk);
if (err) {
device_printf(dev, "Could not get total number of blocks "
"(0x%08x)\n", err);
err = ENXIO;
}
return (err);
}
static int
ps3disk_enum_regions(struct ps3disk_softc *sc)
{
device_t dev = sc->sc_dev;
uint64_t bus_index = ps3bus_get_busidx(dev);
uint64_t dev_index = ps3bus_get_devidx(dev);
uint64_t junk;
int i, err;
/* Read number of regions */
err = lv1_get_repository_node_value(PS3_LPAR_ID_PME,
(lv1_repository_string("bus") >> 32) | bus_index,
lv1_repository_string("dev") | dev_index,
lv1_repository_string("n_regs"), 0, &sc->sc_nregs, &junk);
if (err) {
device_printf(dev, "Could not get number of regions (0x%08x)\n",
err);
err = ENXIO;
goto fail;
}
if (!sc->sc_nregs)
return 0;
sc->sc_reg = malloc(sc->sc_nregs * sizeof(struct ps3disk_region),
M_PS3DISK, M_ZERO | M_WAITOK);
if (!sc->sc_reg) {
err = ENOMEM;
goto fail;
}
/* Setup regions */
for (i = 0; i < sc->sc_nregs; i++) {
err = lv1_get_repository_node_value(PS3_LPAR_ID_PME,
(lv1_repository_string("bus") >> 32) | bus_index,
lv1_repository_string("dev") | dev_index,
lv1_repository_string("region") | i,
lv1_repository_string("id"), &sc->sc_reg[i].r_id, &junk);
if (err) {
device_printf(dev, "Could not get region id (0x%08x)\n",
err);
err = ENXIO;
goto fail;
}
err = lv1_get_repository_node_value(PS3_LPAR_ID_PME,
(lv1_repository_string("bus") >> 32) | bus_index,
lv1_repository_string("dev") | dev_index,
lv1_repository_string("region") | i,
lv1_repository_string("start"), &sc->sc_reg[i].r_start,
&junk);
if (err) {
device_printf(dev, "Could not get region start "
"(0x%08x)\n", err);
err = ENXIO;
goto fail;
}
err = lv1_get_repository_node_value(PS3_LPAR_ID_PME,
(lv1_repository_string("bus") >> 32) | bus_index,
lv1_repository_string("dev") | dev_index,
lv1_repository_string("region") | i,
lv1_repository_string("size"), &sc->sc_reg[i].r_size,
&junk);
if (err) {
device_printf(dev, "Could not get region size "
"(0x%08x)\n", err);
err = ENXIO;
goto fail;
}
if (i == 0)
sc->sc_reg[i].r_flags = 0x2;
else
sc->sc_reg[i].r_flags = 0;
}
return (0);
fail:
sc->sc_nregs = 0;
if (sc->sc_reg)
free(sc->sc_reg, M_PS3DISK);
return (err);
}
static void
ps3disk_transfer(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
struct bio *bp = (struct bio *)(arg);
struct ps3disk_softc *sc = (struct ps3disk_softc *)bp->bio_disk->d_drv1;
struct ps3disk_region *rp = &sc->sc_reg[bp->bio_disk->d_unit];
uint64_t devid = ps3bus_get_device(sc->sc_dev);
uint64_t block;
int i, err;
/* Locks already held by busdma */
PS3DISK_ASSERT_LOCKED(sc);
if (error) {
bp->bio_error = error;
bp->bio_flags |= BIO_ERROR;
bioq_remove(&sc->sc_bioq, bp);
biodone(bp);
return;
}
block = bp->bio_pblkno;
for (i = 0; i < nsegs; i++) {
KASSERT((segs[i].ds_len % sc->sc_blksize) == 0,
("DMA fragments not blocksize multiples"));
if (bp->bio_cmd == BIO_READ) {
err = lv1_storage_read(devid, rp->r_id,
block, segs[i].ds_len/sc->sc_blksize,
rp->r_flags, segs[i].ds_addr,
(uint64_t *)&bp->bio_driver2);
} else {
bus_dmamap_sync(sc->sc_dmatag,
(bus_dmamap_t)bp->bio_driver1,
BUS_DMASYNC_PREWRITE);
err = lv1_storage_write(devid, rp->r_id,
block, segs[i].ds_len/sc->sc_blksize,
rp->r_flags, segs[i].ds_addr,
(uint64_t *)&bp->bio_driver2);
}
if (err) {
if (err == LV1_BUSY) {
bioq_remove(&sc->sc_bioq, bp);
bioq_insert_tail(&sc->sc_deferredq, bp);
} else {
bus_dmamap_unload(sc->sc_dmatag, (bus_dmamap_t)
bp->bio_driver1);
bus_dmamap_destroy(sc->sc_dmatag, (bus_dmamap_t)
bp->bio_driver1);
device_printf(sc->sc_dev, "Could not read "
"sectors (0x%08x)\n", err);
bp->bio_error = EINVAL;
bp->bio_flags |= BIO_ERROR;
bioq_remove(&sc->sc_bioq, bp);
biodone(bp);
}
break;
}
DPRINTF(sc, PS3DISK_DEBUG_READ, "%s: tag 0x%016lx\n",
__func__, sc->sc_bounce_tag);
}
}
#ifdef PS3DISK_DEBUG
static int
ps3disk_sysctl_debug(SYSCTL_HANDLER_ARGS)
{
struct ps3disk_softc *sc = arg1;
int debug, error;
debug = sc->sc_debug;
error = sysctl_handle_int(oidp, &debug, 0, req);
if (error || !req->newptr)
return error;
sc->sc_debug = debug;
return 0;
}
#endif
static void
ps3disk_sysctlattach(struct ps3disk_softc *sc)
{
#ifdef PS3DISK_DEBUG
struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
sc->sc_debug = ps3disk_debug;
SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
"debug", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
ps3disk_sysctl_debug, "I", "control debugging printfs");
#endif
}
static device_method_t ps3disk_methods[] = {
DEVMETHOD(device_probe, ps3disk_probe),
DEVMETHOD(device_attach, ps3disk_attach),
DEVMETHOD(device_detach, ps3disk_detach),
{0, 0},
};
static driver_t ps3disk_driver = {
"ps3disk",
ps3disk_methods,
sizeof(struct ps3disk_softc),
};
static devclass_t ps3disk_devclass;
DRIVER_MODULE(ps3disk, ps3bus, ps3disk_driver, ps3disk_devclass, 0, 0);