diff options
Diffstat (limited to 'drivers/dma/ioat/dma.c')
| -rw-r--r-- | drivers/dma/ioat/dma.c | 51 |
1 files changed, 23 insertions, 28 deletions
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index dcc4ab78b32..3e5a8005c62 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -27,6 +27,7 @@ #include <linux/init.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/pci.h> #include <linux/interrupt.h> #include <linux/dmaengine.h> @@ -71,7 +72,7 @@ static irqreturn_t ioat_dma_do_interrupt(int irq, void *data) } attnstatus = readl(instance->reg_base + IOAT_ATTNSTATUS_OFFSET); - for_each_bit(bit, &attnstatus, BITS_PER_LONG) { + for_each_set_bit(bit, &attnstatus, BITS_PER_LONG) { chan = ioat_chan_by_index(instance, bit); tasklet_schedule(&chan->cleanup_task); } @@ -94,16 +95,12 @@ static irqreturn_t ioat_dma_do_interrupt_msix(int irq, void *data) return IRQ_HANDLED; } -static void ioat1_cleanup_tasklet(unsigned long data); - /* common channel initialization */ -void ioat_init_channel(struct ioatdma_device *device, - struct ioat_chan_common *chan, int idx, - void (*timer_fn)(unsigned long), - void (*tasklet)(unsigned long), - unsigned long ioat) +void ioat_init_channel(struct ioatdma_device *device, struct ioat_chan_common *chan, int idx) { struct dma_device *dma = &device->common; + struct dma_chan *c = &chan->common; + unsigned long data = (unsigned long) c; chan->device = device; chan->reg_base = device->reg_base + (0x80 * (idx + 1)); @@ -112,14 +109,12 @@ void ioat_init_channel(struct ioatdma_device *device, list_add_tail(&chan->common.device_node, &dma->channels); device->idx[idx] = chan; init_timer(&chan->timer); - chan->timer.function = timer_fn; - chan->timer.data = ioat; - tasklet_init(&chan->cleanup_task, tasklet, ioat); + chan->timer.function = device->timer_fn; + chan->timer.data = data; + tasklet_init(&chan->cleanup_task, device->cleanup_fn, data); tasklet_disable(&chan->cleanup_task); } -static void ioat1_timer_event(unsigned long data); - /** * ioat1_dma_enumerate_channels - find and initialize the device's channels * @device: the device to be enumerated @@ -155,10 +150,7 @@ static int ioat1_enumerate_channels(struct ioatdma_device *device) if (!ioat) break; - ioat_init_channel(device, &ioat->base, i, - ioat1_timer_event, - ioat1_cleanup_tasklet, - (unsigned long) ioat); + ioat_init_channel(device, &ioat->base, i); ioat->xfercap = xfercap; spin_lock_init(&ioat->desc_lock); INIT_LIST_HEAD(&ioat->free_desc); @@ -532,12 +524,12 @@ ioat1_dma_prep_memcpy(struct dma_chan *c, dma_addr_t dma_dest, return &desc->txd; } -static void ioat1_cleanup_tasklet(unsigned long data) +static void ioat1_cleanup_event(unsigned long data) { - struct ioat_dma_chan *chan = (void *)data; + struct ioat_dma_chan *ioat = to_ioat_chan((void *) data); - ioat1_cleanup(chan); - writew(IOAT_CHANCTRL_RUN, chan->base.reg_base + IOAT_CHANCTRL_OFFSET); + ioat1_cleanup(ioat); + writew(IOAT_CHANCTRL_RUN, ioat->base.reg_base + IOAT_CHANCTRL_OFFSET); } void ioat_dma_unmap(struct ioat_chan_common *chan, enum dma_ctrl_flags flags, @@ -687,7 +679,7 @@ static void ioat1_cleanup(struct ioat_dma_chan *ioat) static void ioat1_timer_event(unsigned long data) { - struct ioat_dma_chan *ioat = (void *) data; + struct ioat_dma_chan *ioat = to_ioat_chan((void *) data); struct ioat_chan_common *chan = &ioat->base; dev_dbg(to_dev(chan), "%s: state: %lx\n", __func__, chan->state); @@ -734,16 +726,17 @@ static void ioat1_timer_event(unsigned long data) spin_unlock_bh(&chan->cleanup_lock); } -static enum dma_status -ioat1_dma_is_complete(struct dma_chan *c, dma_cookie_t cookie, +enum dma_status +ioat_is_dma_complete(struct dma_chan *c, dma_cookie_t cookie, dma_cookie_t *done, dma_cookie_t *used) { - struct ioat_dma_chan *ioat = to_ioat_chan(c); + struct ioat_chan_common *chan = to_chan_common(c); + struct ioatdma_device *device = chan->device; if (ioat_is_complete(c, cookie, done, used) == DMA_SUCCESS) return DMA_SUCCESS; - ioat1_cleanup(ioat); + device->cleanup_fn((unsigned long) c); return ioat_is_complete(c, cookie, done, used); } @@ -1146,7 +1139,7 @@ ioat_attr_show(struct kobject *kobj, struct attribute *attr, char *page) return entry->show(&chan->common, page); } -struct sysfs_ops ioat_sysfs_ops = { +const struct sysfs_ops ioat_sysfs_ops = { .show = ioat_attr_show, }; @@ -1199,12 +1192,14 @@ int __devinit ioat1_dma_probe(struct ioatdma_device *device, int dca) device->intr_quirk = ioat1_intr_quirk; device->enumerate_channels = ioat1_enumerate_channels; device->self_test = ioat_dma_self_test; + device->timer_fn = ioat1_timer_event; + device->cleanup_fn = ioat1_cleanup_event; dma = &device->common; dma->device_prep_dma_memcpy = ioat1_dma_prep_memcpy; dma->device_issue_pending = ioat1_dma_memcpy_issue_pending; dma->device_alloc_chan_resources = ioat1_dma_alloc_chan_resources; dma->device_free_chan_resources = ioat1_dma_free_chan_resources; - dma->device_is_tx_complete = ioat1_dma_is_complete; + dma->device_is_tx_complete = ioat_is_dma_complete; err = ioat_probe(device); if (err) |