#include <linux/init.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/dmaengine.h>
}
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);
}
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));
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
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);
if (!test_and_set_bit(IOAT_COMPLETION_PENDING, &chan->state))
mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
+ ioat->active += desc->hw->tx_cnt;
ioat->pending += desc->hw->tx_cnt;
if (ioat->pending >= ioat_pending_level)
__ioat1_dma_memcpy_issue_pending(ioat);
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;
-
- ioat1_cleanup(chan);
- writew(IOAT_CHANCTRL_RUN, chan->base.reg_base + IOAT_CHANCTRL_OFFSET);
-}
+ struct ioat_dma_chan *ioat = to_ioat_chan((void *) data);
-static void ioat_unmap(struct pci_dev *pdev, dma_addr_t addr, size_t len,
- int direction, enum dma_ctrl_flags flags, bool dst)
-{
- if ((dst && (flags & DMA_COMPL_DEST_UNMAP_SINGLE)) ||
- (!dst && (flags & DMA_COMPL_SRC_UNMAP_SINGLE)))
- pci_unmap_single(pdev, addr, len, direction);
- else
- pci_unmap_page(pdev, addr, len, direction);
+ 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,
size_t len, struct ioat_dma_descriptor *hw)
{
chan->completed_cookie = tx->cookie;
tx->cookie = 0;
ioat_dma_unmap(chan, tx->flags, desc->len, desc->hw);
+ ioat->active -= desc->hw->tx_cnt;
if (tx->callback) {
tx->callback(tx->callback_param);
tx->callback = NULL;
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);
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);
}
* ioat_dma_self_test - Perform a IOAT transaction to verify the HW works.
* @device: device to be tested
*/
-static int __devinit ioat_dma_self_test(struct ioatdma_device *device)
+int __devinit ioat_dma_self_test(struct ioatdma_device *device)
{
int i;
u8 *src;
dma_cap_set(DMA_MEMCPY, dma->cap_mask);
dma->dev = &pdev->dev;
- dev_err(dev, "Intel(R) I/OAT DMA Engine found,"
- " %d channels, device version 0x%02x, driver version %s\n",
- dma->chancnt, device->version, IOAT_DMA_VERSION);
-
if (!dma->chancnt) {
- dev_err(dev, "Intel(R) I/OAT DMA Engine problem found: "
- "zero channels detected\n");
+ dev_err(dev, "channel enumeration error\n");
goto err_setup_interrupts;
}
if (err)
goto err_setup_interrupts;
- err = ioat_dma_self_test(device);
+ err = device->self_test(device);
if (err)
goto err_self_test;
pci_write_config_dword(pdev, IOAT_PCI_DMACTRL_OFFSET, dmactrl);
}
+static ssize_t ring_size_show(struct dma_chan *c, char *page)
+{
+ struct ioat_dma_chan *ioat = to_ioat_chan(c);
+
+ return sprintf(page, "%d\n", ioat->desccount);
+}
+static struct ioat_sysfs_entry ring_size_attr = __ATTR_RO(ring_size);
+
+static ssize_t ring_active_show(struct dma_chan *c, char *page)
+{
+ struct ioat_dma_chan *ioat = to_ioat_chan(c);
+
+ return sprintf(page, "%d\n", ioat->active);
+}
+static struct ioat_sysfs_entry ring_active_attr = __ATTR_RO(ring_active);
+
+static ssize_t cap_show(struct dma_chan *c, char *page)
+{
+ struct dma_device *dma = c->device;
+
+ return sprintf(page, "copy%s%s%s%s%s%s\n",
+ dma_has_cap(DMA_PQ, dma->cap_mask) ? " pq" : "",
+ dma_has_cap(DMA_PQ_VAL, dma->cap_mask) ? " pq_val" : "",
+ dma_has_cap(DMA_XOR, dma->cap_mask) ? " xor" : "",
+ dma_has_cap(DMA_XOR_VAL, dma->cap_mask) ? " xor_val" : "",
+ dma_has_cap(DMA_MEMSET, dma->cap_mask) ? " fill" : "",
+ dma_has_cap(DMA_INTERRUPT, dma->cap_mask) ? " intr" : "");
+
+}
+struct ioat_sysfs_entry ioat_cap_attr = __ATTR_RO(cap);
+
+static ssize_t version_show(struct dma_chan *c, char *page)
+{
+ struct dma_device *dma = c->device;
+ struct ioatdma_device *device = to_ioatdma_device(dma);
+
+ return sprintf(page, "%d.%d\n",
+ device->version >> 4, device->version & 0xf);
+}
+struct ioat_sysfs_entry ioat_version_attr = __ATTR_RO(version);
+
+static struct attribute *ioat1_attrs[] = {
+ &ring_size_attr.attr,
+ &ring_active_attr.attr,
+ &ioat_cap_attr.attr,
+ &ioat_version_attr.attr,
+ NULL,
+};
+
+static ssize_t
+ioat_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
+{
+ struct ioat_sysfs_entry *entry;
+ struct ioat_chan_common *chan;
+
+ entry = container_of(attr, struct ioat_sysfs_entry, attr);
+ chan = container_of(kobj, struct ioat_chan_common, kobj);
+
+ if (!entry->show)
+ return -EIO;
+ return entry->show(&chan->common, page);
+}
+
+const struct sysfs_ops ioat_sysfs_ops = {
+ .show = ioat_attr_show,
+};
+
+static struct kobj_type ioat1_ktype = {
+ .sysfs_ops = &ioat_sysfs_ops,
+ .default_attrs = ioat1_attrs,
+};
+
+void ioat_kobject_add(struct ioatdma_device *device, struct kobj_type *type)
+{
+ struct dma_device *dma = &device->common;
+ struct dma_chan *c;
+
+ list_for_each_entry(c, &dma->channels, device_node) {
+ struct ioat_chan_common *chan = to_chan_common(c);
+ struct kobject *parent = &c->dev->device.kobj;
+ int err;
+
+ err = kobject_init_and_add(&chan->kobj, type, parent, "quickdata");
+ if (err) {
+ dev_warn(to_dev(chan),
+ "sysfs init error (%d), continuing...\n", err);
+ kobject_put(&chan->kobj);
+ set_bit(IOAT_KOBJ_INIT_FAIL, &chan->state);
+ }
+ }
+}
+
+void ioat_kobject_del(struct ioatdma_device *device)
+{
+ struct dma_device *dma = &device->common;
+ struct dma_chan *c;
+
+ list_for_each_entry(c, &dma->channels, device_node) {
+ struct ioat_chan_common *chan = to_chan_common(c);
+
+ if (!test_bit(IOAT_KOBJ_INIT_FAIL, &chan->state)) {
+ kobject_del(&chan->kobj);
+ kobject_put(&chan->kobj);
+ }
+ }
+}
+
int __devinit ioat1_dma_probe(struct ioatdma_device *device, int dca)
{
struct pci_dev *pdev = device->pdev;
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)
err = ioat_register(device);
if (err)
return err;
+ ioat_kobject_add(device, &ioat1_ktype);
+
if (dca)
device->dca = ioat_dca_init(pdev, device->reg_base);
ioat_disable_interrupts(device);
+ ioat_kobject_del(device);
+
dma_async_device_unregister(dma);
pci_pool_destroy(device->dma_pool);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff