diff options
Diffstat (limited to 'drivers/sh/maple/maple.c')
| -rw-r--r-- | drivers/sh/maple/maple.c | 981 |
1 files changed, 497 insertions, 484 deletions
diff --git a/drivers/sh/maple/maple.c b/drivers/sh/maple/maple.c index e52a6296ca46..9cfcfd8dad5e 100644 --- a/drivers/sh/maple/maple.c +++ b/drivers/sh/maple/maple.c @@ -31,6 +31,7 @@ #include <asm/mach/dma.h> #include <asm/mach/sysasic.h> #include <asm/mach/maple.h> +#include <linux/delay.h> MODULE_AUTHOR("Yaegshi Takeshi, Paul Mundt, M.R. Brown, Adrian McMenamin"); MODULE_DESCRIPTION("Maple bus driver for Dreamcast"); @@ -53,12 +54,12 @@ static struct device maple_bus; static int subdevice_map[MAPLE_PORTS]; static unsigned long *maple_sendbuf, *maple_sendptr, *maple_lastptr; static unsigned long maple_pnp_time; -static int started, scanning, liststatus; +static int started, scanning, liststatus, realscan; static struct kmem_cache *maple_queue_cache; struct maple_device_specify { - int port; - int unit; + int port; + int unit; }; /** @@ -68,22 +69,22 @@ struct maple_device_specify { */ int maple_driver_register(struct device_driver *drv) { - if (!drv) - return -EINVAL; - drv->bus = &maple_bus_type; - return driver_register(drv); + if (!drv) + return -EINVAL; + drv->bus = &maple_bus_type; + return driver_register(drv); } EXPORT_SYMBOL_GPL(maple_driver_register); /* set hardware registers to enable next round of dma */ static void maplebus_dma_reset(void) { - ctrl_outl(MAPLE_MAGIC, MAPLE_RESET); - /* set trig type to 0 for software trigger, 1 for hardware (VBLANK) */ - ctrl_outl(1, MAPLE_TRIGTYPE); - ctrl_outl(MAPLE_2MBPS | MAPLE_TIMEOUT(50000), MAPLE_SPEED); - ctrl_outl(PHYSADDR(maple_sendbuf), MAPLE_DMAADDR); - ctrl_outl(1, MAPLE_ENABLE); + ctrl_outl(MAPLE_MAGIC, MAPLE_RESET); + /* set trig type to 0 for software trigger, 1 for hardware (VBLANK) */ + ctrl_outl(1, MAPLE_TRIGTYPE); + ctrl_outl(MAPLE_2MBPS | MAPLE_TIMEOUT(50000), MAPLE_SPEED); + ctrl_outl(PHYSADDR(maple_sendbuf), MAPLE_DMAADDR); + ctrl_outl(1, MAPLE_ENABLE); } /** @@ -94,27 +95,36 @@ static void maplebus_dma_reset(void) * @function: the function code for the device */ void maple_getcond_callback(struct maple_device *dev, - void (*callback) (struct mapleq * mq), - unsigned long interval, unsigned long function) + void (*callback) (struct mapleq *mq), + unsigned long interval, unsigned long function) { - dev->callback = callback; - dev->interval = interval; - dev->function = cpu_to_be32(function); - dev->when = jiffies; + dev->callback = callback; + dev->interval = interval; + dev->function = cpu_to_be32(function); + dev->when = jiffies; } EXPORT_SYMBOL_GPL(maple_getcond_callback); static int maple_dma_done(void) { - return (ctrl_inl(MAPLE_STATE) & 1) == 0; + return (ctrl_inl(MAPLE_STATE) & 1) == 0; } static void maple_release_device(struct device *dev) { - if (dev->type) { - kfree(dev->type->name); - kfree(dev->type); - } + struct maple_device *mdev; + struct mapleq *mq; + if (!dev) + return; + mdev = to_maple_dev(dev); + mq = mdev->mq; + if (mq) { + if (mq->recvbufdcsp) + kmem_cache_free(maple_queue_cache, mq->recvbufdcsp); + kfree(mq); + mq = NULL; + } + kfree(mdev); } /** @@ -123,60 +133,64 @@ static void maple_release_device(struct device *dev) */ void maple_add_packet(struct mapleq *mq) { - mutex_lock(&maple_list_lock); - list_add(&mq->list, &maple_waitq); - mutex_unlock(&maple_list_lock); + mutex_lock(&maple_list_lock); + list_add(&mq->list, &maple_waitq); + mutex_unlock(&maple_list_lock); } EXPORT_SYMBOL_GPL(maple_add_packet); -static struct mapleq *maple_allocq(struct maple_device *dev) +static struct mapleq *maple_allocq(struct maple_device *mdev) { - struct mapleq *mq; + struct mapleq *mq; - mq = kmalloc(sizeof(*mq), GFP_KERNEL); - if (!mq) - return NULL; + mq = kmalloc(sizeof(*mq), GFP_KERNEL); + if (!mq) + return NULL; - mq->dev = dev; - mq->recvbufdcsp = kmem_cache_zalloc(maple_queue_cache, GFP_KERNEL); - mq->recvbuf = (void *) P2SEGADDR(mq->recvbufdcsp); - if (!mq->recvbuf) { - kfree(mq); - return NULL; - } + mq->dev = mdev; + mq->recvbufdcsp = kmem_cache_zalloc(maple_queue_cache, GFP_KERNEL); + mq->recvbuf = (void *) P2SEGADDR(mq->recvbufdcsp); + if (!mq->recvbuf) { + kfree(mq); + return NULL; + } - return mq; + return mq; } static struct maple_device *maple_alloc_dev(int port, int unit) { - struct maple_device *dev; - - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) - return NULL; - - dev->port = port; - dev->unit = unit; - dev->mq = maple_allocq(dev); - - if (!dev->mq) { - kfree(dev); - return NULL; - } - - return dev; + struct maple_device *mdev; + + mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); + if (!mdev) + return NULL; + + mdev->port = port; + mdev->unit = unit; + mdev->mq = maple_allocq(mdev); + + if (!mdev->mq) { + kfree(mdev); + return NULL; + } + mdev->dev.bus = &maple_bus_type; + mdev->dev.parent = &maple_bus; + mdev->function = 0; + return mdev; } static void maple_free_dev(struct maple_device *mdev) { - if (!mdev) - return; - if (mdev->mq) { - kmem_cache_free(maple_queue_cache, mdev->mq->recvbufdcsp); - kfree(mdev->mq); - } - kfree(mdev); + if (!mdev) + return; + if (mdev->mq) { + if (mdev->mq->recvbufdcsp) + kmem_cache_free(maple_queue_cache, + mdev->mq->recvbufdcsp); + kfree(mdev->mq); + } + kfree(mdev); } /* process the command queue into a maple command block @@ -184,153 +198,162 @@ static void maple_free_dev(struct maple_device *mdev) */ static void maple_build_block(struct mapleq *mq) { - int port, unit, from, to, len; - unsigned long *lsendbuf = mq->sendbuf; + int port, unit, from, to, len; + unsigned long *lsendbuf = mq->sendbuf; - port = mq->dev->port & 3; - unit = mq->dev->unit; - len = mq->length; - from = port << 6; - to = (port << 6) | (unit > 0 ? (1 << (unit - 1)) & 0x1f : 0x20); + port = mq->dev->port & 3; + unit = mq->dev->unit; + len = mq->length; + from = port << 6; + to = (port << 6) | (unit > 0 ? (1 << (unit - 1)) & 0x1f : 0x20); - *maple_lastptr &= 0x7fffffff; - maple_lastptr = maple_sendptr; + *maple_lastptr &= 0x7fffffff; + maple_lastptr = maple_sendptr; - *maple_sendptr++ = (port << 16) | len | 0x80000000; - *maple_sendptr++ = PHYSADDR(mq->recvbuf); - *maple_sendptr++ = - mq->command | (to << 8) | (from << 16) | (len << 24); + *maple_sendptr++ = (port << 16) | len | 0x80000000; + *maple_sendptr++ = PHYSADDR(mq->recvbuf); + *maple_sendptr++ = + mq->command | (to << 8) | (from << 16) | (len << 24); - while (len-- > 0) - *maple_sendptr++ = *lsendbuf++; + while (len-- > 0) + *maple_sendptr++ = *lsendbuf++; } /* build up command queue */ static void maple_send(void) { - int i; - int maple_packets; - struct mapleq *mq, *nmq; - - if (!list_empty(&maple_sentq)) - return; - if (list_empty(&maple_waitq) || !maple_dma_done()) - return; - maple_packets = 0; - maple_sendptr = maple_lastptr = maple_sendbuf; - list_for_each_entry_safe(mq, nmq, &maple_waitq, list) { - maple_build_block(mq); - list_move(&mq->list, &maple_sentq); - if (maple_packets++ > MAPLE_MAXPACKETS) - break; - } - if (maple_packets > 0) { - for (i = 0; i < (1 << MAPLE_DMA_PAGES); i++) - dma_cache_sync(0, maple_sendbuf + i * PAGE_SIZE, - PAGE_SIZE, DMA_BIDIRECTIONAL); - } + int i; + int maple_packets; + struct mapleq *mq, *nmq; + + if (!list_empty(&maple_sentq)) + return; + if (list_empty(&maple_waitq) || !maple_dma_done()) + return; + maple_packets = 0; + maple_sendptr = maple_lastptr = maple_sendbuf; + list_for_each_entry_safe(mq, nmq, &maple_waitq, list) { + maple_build_block(mq); + list_move(&mq->list, &maple_sentq); + if (maple_packets++ > MAPLE_MAXPACKETS) + break; + } + if (maple_packets > 0) { + for (i = 0; i < (1 << MAPLE_DMA_PAGES); i++) + dma_cache_sync(0, maple_sendbuf + i * PAGE_SIZE, + PAGE_SIZE, DMA_BIDIRECTIONAL); + } } static int attach_matching_maple_driver(struct device_driver *driver, - void *devptr) + void *devptr) { - struct maple_driver *maple_drv; - struct maple_device *mdev; - - mdev = devptr; - maple_drv = to_maple_driver(driver); - if (mdev->devinfo.function & be32_to_cpu(maple_drv->function)) { - if (maple_drv->connect(mdev) == 0) { - mdev->driver = maple_drv; - return 1; - } - } - return 0; + struct maple_driver *maple_drv; + struct maple_device *mdev; + + mdev = devptr; + maple_drv = to_maple_driver(driver); + if (mdev->devinfo.function & be32_to_cpu(maple_drv->function)) { + if (maple_drv->connect(mdev) == 0) { + mdev->driver = maple_drv; + return 1; + } + } + return 0; } static void maple_detach_driver(struct maple_device *mdev) { - if (!mdev) - return; - if (mdev->driver) { - if (mdev->driver->disconnect) - mdev->driver->disconnect(mdev); - } - mdev->driver = NULL; - if (mdev->registered) { - maple_release_device(&mdev->dev); - device_unregister(&mdev->dev); - } - mdev->registered = 0; - maple_free_dev(mdev); + if (!mdev) + return; + if (mdev->driver) { + if (mdev->driver->disconnect) + mdev->driver->disconnect(mdev); + } + mdev->driver = NULL; + device_unregister(&mdev->dev); + mdev = NULL; } /* process initial MAPLE_COMMAND_DEVINFO for each device or port */ -static void maple_attach_driver(struct maple_device *dev) +static void maple_attach_driver(struct maple_device *mdev) { - char *p; - - char *recvbuf; - unsigned long function; - int matched, retval; - - recvbuf = dev->mq->recvbuf; - memcpy(&dev->devinfo, recvbuf + 4, sizeof(dev->devinfo)); - memcpy(dev->product_name, dev->devinfo.product_name, 30); - memcpy(dev->product_licence, dev->devinfo.product_licence, 60); - dev->product_name[30] = '\0'; - dev->product_licence[60] = '\0'; - - for (p = dev->product_name + 29; dev->product_name <= p; p--) - if (*p == ' ') - *p = '\0'; - else - break; - - for (p = dev->product_licence + 59; dev->product_licence <= p; p--) - if (*p == ' ') - *p = '\0'; - else - break; - - function = be32_to_cpu(dev->devinfo.function); - - if (function > 0x200) { - /* Do this silently - as not a real device */ - function = 0; - dev->driver = &maple_dummy_driver; - sprintf(dev->dev.bus_id, "%d:0.port", dev->port); - } else { - printk(KERN_INFO - "Maple bus at (%d, %d): Connected function 0x%lX\n", - dev->port, dev->unit, function); - - matched = - bus_for_each_drv(&maple_bus_type, NULL, dev, - attach_matching_maple_driver); - - if (matched == 0) { - /* Driver does not exist yet */ - printk(KERN_INFO - "No maple driver found for this device\n"); - dev->driver = &maple_dummy_driver; - } - - sprintf(dev->dev.bus_id, "%d:0%d.%lX", dev->port, - dev->unit, function); - } - dev->function = function; - dev->dev.bus = &maple_bus_type; - dev->dev.parent = &maple_bus; - dev->dev.release = &maple_release_device; - retval = device_register(&dev->dev); - if (retval) { - printk(KERN_INFO - "Maple bus: Attempt to register device (%x, %x) failed.\n", - dev->port, dev->unit); - maple_free_dev(dev); - } - dev->registered = 1; + char *p, *recvbuf; + unsigned long function; + int matched, retval; + + recvbuf = mdev->mq->recvbuf; + /* copy the data as individual elements in + * case of memory optimisation */ + memcpy(&mdev->devinfo.function, recvbuf + 4, 4); + memcpy(&mdev->devinfo.function_data[0], recvbuf + 8, 12); + memcpy(&mdev->devinfo.area_code, recvbuf + 20, 1); + memcpy(&mdev->devinfo.connector_direction, recvbuf + 21, 1); + memcpy(&mdev->devinfo.product_name[0], recvbuf + 22, 30); + memcpy(&mdev->devinfo.product_licence[0], recvbuf + 52, 60); + memcpy(&mdev->devinfo.standby_power, recvbuf + 112, 2); + memcpy(&mdev->devinfo.max_power, recvbuf + 114, 2); + memcpy(mdev->product_name, mdev->devinfo.product_name, 30); + mdev->product_name[30] = '\0'; + memcpy(mdev->product_licence, mdev->devinfo.product_licence, 60); + mdev->product_licence[60] = '\0'; + + for (p = mdev->product_name + 29; mdev->product_name <= p; p--) + if (*p == ' ') + *p = '\0'; + else + break; + for (p = mdev->product_licence + 59; mdev->product_licence <= p; p--) + if (*p == ' ') + *p = '\0'; + else + break; + + if (realscan) { + printk(KERN_INFO "Maple device detected: %s\n", + mdev->product_name); + printk(KERN_INFO "Maple device: %s\n", mdev->product_licence); + } + + function = be32_to_cpu(mdev->devinfo.function); + + if (function > 0x200) { + /* Do this silently - as not a real device */ + function = 0; + mdev->driver = &maple_dummy_driver; + sprintf(mdev->dev.bus_id, "%d:0.port", mdev->port); + } else { + if (realscan) + printk(KERN_INFO + "Maple bus at (%d, %d): Function 0x%lX\n", + mdev->port, mdev->unit, function); + + matched = + bus_for_each_drv(&maple_bus_type, NULL, mdev, + attach_matching_maple_driver); + + if (matched == 0) { + /* Driver does not exist yet */ + if (realscan) + printk(KERN_INFO + "No maple driver found.\n"); + mdev->driver = &maple_dummy_driver; + } + sprintf(mdev->dev.bus_id, "%d:0%d.%lX", mdev->port, + mdev->unit, function); + } + mdev->function = function; + mdev->dev.release = &maple_release_device; + retval = device_register(&mdev->dev); + if (retval) { + printk(KERN_INFO + "Maple bus: Attempt to register device" + " (%x, %x) failed.\n", + mdev->port, mdev->unit); + maple_free_dev(mdev); + mdev = NULL; + return; + } } /* @@ -340,270 +363,262 @@ static void maple_attach_driver(struct maple_device *dev) */ static int detach_maple_device(struct device *device, void *portptr) { - struct maple_device_specify *ds; - struct maple_device *mdev; - - ds = portptr; - mdev = to_maple_dev(device); - if (mdev->port == ds->port && mdev->unit == ds->unit) - return 1; - return 0; + struct maple_device_specify *ds; + struct maple_device *mdev; + + ds = portptr; + mdev = to_maple_dev(device); + if (mdev->port == ds->port && mdev->unit == ds->unit) + return 1; + return 0; } static int setup_maple_commands(struct device *device, void *ignored) { - struct maple_device *maple_dev = to_maple_dev(device); - - if ((maple_dev->interval > 0) - && time_after(jiffies, maple_dev->when)) { - maple_dev->when = jiffies + maple_dev->interval; - maple_dev->mq->command = MAPLE_COMMAND_GETCOND; - maple_dev->mq->sendbuf = &maple_dev->function; - maple_dev->mq->length = 1; - maple_add_packet(maple_dev->mq); - liststatus++; - } else { - if (time_after(jiffies, maple_pnp_time)) { - maple_dev->mq->command = MAPLE_COMMAND_DEVINFO; - maple_dev->mq->length = 0; - maple_add_packet(maple_dev->mq); - liststatus++; - } - } - - return 0; + struct maple_device *maple_dev = to_maple_dev(device); + + if ((maple_dev->interval > 0) + && time_after(jiffies, maple_dev->when)) { + maple_dev->when = jiffies + maple_dev->interval; + maple_dev->mq->command = MAPLE_COMMAND_GETCOND; + maple_dev->mq->sendbuf = &maple_dev->function; + maple_dev->mq->length = 1; + maple_add_packet(maple_dev->mq); + liststatus++; + } else { + if (time_after(jiffies, maple_pnp_time)) { + maple_dev->mq->command = MAPLE_COMMAND_DEVINFO; + maple_dev->mq->length = 0; + maple_add_packet(maple_dev->mq); + liststatus++; + } + } + + return 0; } /* VBLANK bottom half - implemented via workqueue */ static void maple_vblank_handler(struct work_struct *work) { - if (!maple_dma_done()) - return; - if (!list_empty(&maple_sentq)) - return; - ctrl_outl(0, MAPLE_ENABLE); - liststatus = 0; - bus_for_each_dev(&maple_bus_type, NULL, NULL, - setup_maple_commands); - if (time_after(jiffies, maple_pnp_time)) - maple_pnp_time = jiffies + MAPLE_PNP_INTERVAL; - if (liststatus && list_empty(&maple_sentq)) { - INIT_LIST_HEAD(&maple_sentq); - maple_send(); - } - maplebus_dma_reset(); + if (!maple_dma_done()) + return; + if (!list_empty(&maple_sentq)) + return; + ctrl_outl(0, MAPLE_ENABLE); + liststatus = 0; + bus_for_each_dev(&maple_bus_type, NULL, NULL, + setup_maple_commands); + if (time_after(jiffies, maple_pnp_time)) + maple_pnp_time = jiffies + MAPLE_PNP_INTERVAL; + if (liststatus && list_empty(&maple_sentq)) { + INIT_LIST_HEAD(&maple_sentq); + maple_send(); + } + maplebus_dma_reset(); } /* handle devices added via hotplugs - placing them on queue for DEVINFO*/ static void maple_map_subunits(struct maple_device *mdev, int submask) { - int retval, k, devcheck; - struct maple_device *mdev_add; - struct maple_device_specify ds; - - for (k = 0; k < 5; k++) { - ds.port = mdev->port; - ds.unit = k + 1; - retval = - bus_for_each_dev(&maple_bus_type, NULL, &ds, - detach_maple_device); - if (retval) { - submask = submask >> 1; - continue; - } - devcheck = submask & 0x01; - if (devcheck) { - mdev_add = maple_alloc_dev(mdev->port, k + 1); - if (!mdev_add) - return; - mdev_add->mq->command = MAPLE_COMMAND_DEVINFO; - mdev_add->mq->length = 0; - maple_add_packet(mdev_add->mq); - scanning = 1; - } - submask = submask >> 1; - } + int retval, k, devcheck; + struct maple_device *mdev_add; + struct maple_device_specify ds; + + for (k = 0; k < 5; k++) { + ds.port = mdev->port; + ds.unit = k + 1; + retval = + bus_for_each_dev(&maple_bus_type, NULL, &ds, + detach_maple_device); + if (retval) { + submask = submask >> 1; + continue; + } + devcheck = submask & 0x01; + if (devcheck) { + mdev_add = maple_alloc_dev(mdev->port, k + 1); + if (!mdev_add) + return; + mdev_add->mq->command = MAPLE_COMMAND_DEVINFO; + mdev_add->mq->length = 0; + maple_add_packet(mdev_add->mq); + scanning = 1; + } + submask = submask >> 1; + } } /* mark a device as removed */ static void maple_clean_submap(struct maple_device *mdev) { - int killbit; + int killbit; - killbit = (mdev->unit > 0 ? (1 << (mdev->unit - 1)) & 0x1f : 0x20); - killbit = ~killbit; - killbit &= 0xFF; - subdevice_map[mdev->port] = subdevice_map[mdev->port] & killbit; + killbit = (mdev->unit > 0 ? (1 << (mdev->unit - 1)) & 0x1f : 0x20); + killbit = ~killbit; + killbit &= 0xFF; + subdevice_map[mdev->port] = subdevice_map[mdev->port] & killbit; } /* handle empty port or hotplug removal */ static void maple_response_none(struct maple_device *mdev, - struct mapleq *mq) + struct mapleq *mq) { - if (mdev->unit != 0) { - list_del(&mq->list); - maple_clean_submap(mdev); - printk(KERN_INFO - "Maple bus device detaching at (%d, %d)\n", - mdev->port, mdev->unit); - maple_detach_driver(mdev); - return; - } - if (!started) { - printk(KERN_INFO "No maple devices attached to port %d\n", - mdev->port); - return; - } - maple_clean_submap(mdev); + if (mdev->unit != 0) { + list_del(&mq->list); + maple_clean_submap(mdev); + printk(KERN_INFO + "Maple bus device detaching at (%d, %d)\n", + mdev->port, mdev->unit); + maple_detach_driver(mdev); + return; + } + if (!started) { + printk(KERN_INFO "No maple devices attached to port %d\n", + mdev->port); + return; + } + maple_clean_submap(mdev); } /* preprocess hotplugs or scans */ static void maple_response_devinfo(struct maple_device *mdev, - char *recvbuf) + char *recvbuf) { - char submask; - if ((!started) || (scanning == 2)) { - maple_attach_driver(mdev); - return; - } - if (mdev->unit == 0) { - submask = recvbuf[2] & 0x1F; - if (submask ^ subdevice_map[mdev->port]) { - maple_map_subunits(mdev, submask); - subdevice_map[mdev->port] = submask; - } - } + char submask; + if ((!started) || (scanning == 2)) { + maple_attach_driver(mdev); + return; + } + if (mdev->unit == 0) { + submask = recvbuf[2] & 0x1F; + if (submask ^ subdevice_map[mdev->port]) { + maple_map_subunits(mdev, submask); + subdevice_map[mdev->port] = submask; + } + } } /* maple dma end bottom half - implemented via workqueue */ static void maple_dma_handler(struct work_struct *work) { - struct mapleq *mq, *nmq; - struct maple_device *dev; - char *recvbuf; - enum maple_code code; - - if (!maple_dma_done()) - return; - ctrl_outl(0, MAPLE_ENABLE); - if (!list_empty(&maple_sentq)) { - list_for_each_entry_safe(mq, nmq, &maple_sentq, list) { - recvbuf = mq->recvbuf; - code = recvbuf[0]; - dev = mq->dev; - switch (code) { - case MAPLE_RESPONSE_NONE: - maple_response_none(dev, mq); - break; - - case MAPLE_RESPONSE_DEVINFO: - maple_response_devinfo(dev, recvbuf); - break; - - case MAPLE_RESPONSE_DATATRF: - if (dev->callback) - dev->callback(mq); - break; - - case MAPLE_RESPONSE_FILEERR: - case MAPLE_RESPONSE_AGAIN: - case MAPLE_RESPONSE_BADCMD: - case MAPLE_RESPONSE_BADFUNC: - printk(KERN_DEBUG - "Maple non-fatal error 0x%X\n", - code); - break; - - case MAPLE_RESPONSE_ALLINFO: - printk(KERN_DEBUG - "Maple - extended device information not supported\n"); - break; - - case MAPLE_RESPONSE_OK: - break; - - default: - break; - } - } - INIT_LIST_HEAD(&maple_sentq); - if (scanning == 1) { - maple_send(); - scanning = 2; - } else - scanning = 0; - - if (started == 0) - started = 1; - } - maplebus_dma_reset(); + struct mapleq *mq, *nmq; + struct maple_device *dev; + char *recvbuf; + enum maple_code code; + + if (!maple_dma_done()) + return; + ctrl_outl(0, MAPLE_ENABLE); + if (!list_empty(&maple_sentq)) { + list_for_each_entry_safe(mq, nmq, &maple_sentq, list) { + recvbuf = mq->recvbuf; + code = recvbuf[0]; + dev = mq->dev; + switch (code) { + case MAPLE_RESPONSE_NONE: + maple_response_none(dev, mq); + break; + + case MAPLE_RESPONSE_DEVINFO: + maple_response_devinfo(dev, recvbuf); + break; + + case MAPLE_RESPONSE_DATATRF: + if (dev->callback) + dev->callback(mq); + break; + + case MAPLE_RESPONSE_FILEERR: + case MAPLE_RESPONSE_AGAIN: + case MAPLE_RESPONSE_BADCMD: + case MAPLE_RESPONSE_BADFUNC: + printk(KERN_DEBUG + "Maple non-fatal error 0x%X\n", + code); + break; + + case MAPLE_RESPONSE_ALLINFO: + printk(KERN_DEBUG + "Maple - extended device information" + " not supported\n"); + break; + + case MAPLE_RESPONSE_OK: + break; + + default: + break; + } + } + INIT_LIST_HEAD(&maple_sentq); + if (scanning == 1) { + maple_send(); + scanning = 2; + } else + scanning = 0; + + if (started == 0) + started = 1; + } + maplebus_dma_reset(); } static irqreturn_t maplebus_dma_interrupt(int irq, void *dev_id) { - /* Load everything into the bottom half */ - schedule_work(&maple_dma_process); - return IRQ_HANDLED; + /* Load everything into the bottom half */ + schedule_work(&maple_dma_process); + return IRQ_HANDLED; } static irqreturn_t maplebus_vblank_interrupt(int irq, void *dev_id) { - schedule_work(&maple_vblank_process); - return IRQ_HANDLED; + schedule_work(&maple_vblank_process); + return IRQ_HANDLED; } -static struct irqaction maple_dma_irq = { - .name = "maple bus DMA handler", - .handler = maplebus_dma_interrupt, - .flags = IRQF_SHARED, -}; - -static struct irqaction maple_vblank_irq = { - .name = "maple bus VBLANK handler", - .handler = maplebus_vblank_interrupt, - .flags = IRQF_SHARED, -}; - static int maple_set_dma_interrupt_handler(void) { - return setup_irq(HW_EVENT_MAPLE_DMA, &maple_dma_irq); + return request_irq(HW_EVENT_MAPLE_DMA, maplebus_dma_interrupt, + IRQF_SHARED, "maple bus DMA", &maple_dummy_driver); } static int maple_set_vblank_interrupt_handler(void) { - return setup_irq(HW_EVENT_VSYNC, &maple_vblank_irq); + return request_irq(HW_EVENT_VSYNC, maplebus_vblank_interrupt, + IRQF_SHARED, "maple bus VBLANK", &maple_dummy_driver); } static int maple_get_dma_buffer(void) { - maple_sendbuf = - (void *) __get_free_pages(GFP_KERNEL | __GFP_ZERO, - MAPLE_DMA_PAGES); - if (!maple_sendbuf) - return -ENOMEM; - return 0; + maple_sendbuf = + (void *) __get_free_pages(GFP_KERNEL | __GFP_ZERO, + MAPLE_DMA_PAGES); + if (!maple_sendbuf) + return -ENOMEM; + return 0; } static int match_maple_bus_driver(struct device *devptr, - struct device_driver *drvptr) + struct device_driver *drvptr) { - struct maple_driver *maple_drv; - struct maple_device *maple_dev; - - maple_drv = container_of(drvptr, struct maple_driver, drv); - maple_dev = container_of(devptr, struct maple_device, dev); - /* Trap empty port case */ - if (maple_dev->devinfo.function == 0xFFFFFFFF) - return 0; - else if (maple_dev->devinfo.function & - be32_to_cpu(maple_drv->function)) - return 1; - return 0; + struct maple_driver *maple_drv; + struct maple_device *maple_dev; + + maple_drv = container_of(drvptr, struct maple_driver, drv); + maple_dev = container_of(devptr, struct maple_device, dev); + /* Trap empty port case */ + if (maple_dev->devinfo.function == 0xFFFFFFFF) + return 0; + else if (maple_dev->devinfo.function & + be32_to_cpu(maple_drv->function)) + return 1; + return 0; } -static int maple_bus_uevent(struct device *dev, struct kobj_uevent_env *env) +static int maple_bus_uevent(struct device *dev, + struct kobj_uevent_env *env) { - return 0; + return 0; } static void maple_bus_release(struct device *dev) @@ -611,124 +626,122 @@ static void maple_bus_release(struct device *dev) } static struct maple_driver maple_dummy_driver = { - .drv = { - .name = "maple_dummy_driver", - .bus = &maple_bus_type, - }, + .drv = { + .name = "maple_dummy_driver", + .bus = &maple_bus_type, + }, }; struct bus_type maple_bus_type = { - .name = "maple", - .match = match_maple_bus_driver, - .uevent = maple_bus_uevent, + .name = "maple", + .match = match_maple_bus_driver, + .uevent = maple_bus_uevent, }; EXPORT_SYMBOL_GPL(maple_bus_type); static struct device maple_bus = { - .bus_id = "maple", - .release = maple_bus_release, + .bus_id = "maple", + .release = maple_bus_release, }; static int __init maple_bus_init(void) { - int retval, i; - struct maple_device *mdev[MAPLE_PORTS]; - ctrl_outl(0, MAPLE_STATE); - - retval = device_register(&maple_bus); - if (retval) - goto cleanup; - - retval = bus_register(&maple_bus_type); - if (retval) - goto cleanup_device; - - retval = driver_register(&maple_dummy_driver.drv); - - if (retval) - goto cleanup_bus; - - /* allocate memory for maple bus dma */ - retval = maple_get_dma_buffer(); - if (retval) { - printk(KERN_INFO - "Maple bus: Failed to allocate Maple DMA buffers\n"); - goto cleanup_basic; - } - - /* set up DMA interrupt handler */ - retval = maple_set_dma_interrupt_handler(); - if (retval) { - printk(KERN_INFO - "Maple bus: Failed to grab maple DMA IRQ\n"); - goto cleanup_dma; - } - - /* set up VBLANK interrupt handler */ - retval = maple_set_vblank_interrupt_handler(); - if (retval) { - printk(KERN_INFO "Maple bus: Failed to grab VBLANK IRQ\n"); - goto cleanup_irq; - } - - maple_queue_cache = - kmem_cache_create("maple_queue_cache", 0x400, 0, - SLAB_HWCACHE_ALIGN, NULL); - - if (!maple_queue_cache) - goto cleanup_bothirqs; - - /* setup maple ports */ - for (i = 0; i < MAPLE_PORTS; i++) { - mdev[i] = maple_alloc_dev(i, 0); - if (!mdev[i]) { - while (i-- > 0) - maple_free_dev(mdev[i]); - goto cleanup_cache; - } - mdev[i]->registered = 0; - mdev[i]->mq->command = MAPLE_COMMAND_DEVINFO; - mdev[i]->mq->length = 0; - maple_attach_driver(mdev[i]); - maple_add_packet(mdev[i]->mq); - subdevice_map[i] = 0; - } - - /* setup maplebus hardware */ - maplebus_dma_reset(); - - /* initial detection */ - maple_send(); - - maple_pnp_time = jiffies; - - printk(KERN_INFO "Maple bus core now registered.\n"); - - return 0; + int retval, i; + struct maple_device *mdev[MAPLE_PORTS]; + ctrl_outl(0, MAPLE_STATE); + + retval = device_register(&maple_bus); + if (retval) + goto cleanup; + + retval = bus_register(&maple_bus_type); + if (retval) + goto cleanup_device; + + retval = driver_register(&maple_dummy_driver.drv); + if (retval) + goto cleanup_bus; + + /* allocate memory for maple bus dma */ + retval = maple_get_dma_buffer(); + if (retval) { + printk(KERN_INFO + "Maple bus: Failed to allocate Maple DMA buffers\n"); + goto cleanup_basic; + } + + /* set up DMA interrupt handler */ + retval = maple_set_dma_interrupt_handler(); + if (retval) { + printk(KERN_INFO + "Maple bus: Failed to grab maple DMA IRQ\n"); + goto cleanup_dma; + } + + /* set up VBLANK interrupt handler */ + retval = maple_set_vblank_interrupt_handler(); + if (retval) { + printk(KERN_INFO "Maple bus: Failed to grab VBLANK IRQ\n"); + goto cleanup_irq; + } + + maple_queue_cache = + kmem_cache_create("maple_queue_cache", 0x400, 0, + SLAB_POISON|SLAB_HWCACHE_ALIGN, NULL); + + if (!maple_queue_cache) + goto cleanup_bothirqs; + + /* setup maple ports */ + for (i = 0; i < MAPLE_PORTS; i++) { + mdev[i] = maple_alloc_dev(i, 0); + if (!mdev[i]) { + while (i-- > 0) + maple_free_dev(mdev[i]); + goto cleanup_cache; + } + mdev[i]->mq->command = MAPLE_COMMAND_DEVINFO; + mdev[i]->mq->length = 0; + maple_add_packet(mdev[i]->mq); + /* delay aids hardware detection */ + mdelay(5); + subdevice_map[i] = 0; + } + + realscan = 1; + /* setup maplebus hardware */ + maplebus_dma_reset(); + /* initial detection */ + maple_send(); + maple_pnp_time = jiffies; + printk(KERN_INFO "Maple bus core now registered.\n"); + + return 0; cleanup_cache: - kmem_cache_destroy(maple_queue_cache); + kmem_cache_destroy(maple_queue_cache); cleanup_bothirqs: - free_irq(HW_EVENT_VSYNC, 0); + free_irq(HW_EVENT_VSYNC, 0); cleanup_irq: - free_irq(HW_EVENT_MAPLE_DMA, 0); + free_irq(HW_EVENT_MAPLE_DMA, 0); cleanup_dma: - free_pages((unsigned long) maple_sendbuf, MAPLE_DMA_PAGES); + free_pages((unsigned long) maple_sendbuf, MAPLE_DMA_PAGES); cleanup_basic: - driver_unregister(&maple_dummy_driver.drv); + driver_unregister(&maple_dummy_driver.drv); cleanup_bus: - bus_unregister(&maple_bus_type); + bus_unregister(&maple_bus_type); cleanup_device: - device_unregister(&maple_bus); + device_unregister(&maple_bus); cleanup: - printk(KERN_INFO "Maple bus registration failed\n"); - return retval; + printk(KERN_INFO "Maple bus registration failed\n"); + return retval; } -subsys_initcall(maple_bus_init); +/* Push init to later to ensure hardware gets detected */ +fs_initcall(maple_bus_init); |