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ioat: cleanup ->timer_fn() and ->cleanup_fn() prototypes

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If the calling convention of ->timer_fn() and ->cleanup_fn() are unified
across hardware versions we can drop parameters to ioat_init_channel() and
unify ioat_is_dma_complete() implementations.

Both ->timer_fn() and ->cleanup_fn() are modified to expect a struct
dma_chan pointer.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2010-03-03 21:21:13 -07:00
parent b9cc98697d
commit aa4d72ae94
5 changed files with 40 additions and 67 deletions
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46
drivers/dma/ioat/dma.c
View file

@ -94,16 +94,12 @@ 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 +108,12 @@ 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 +149,7 @@ 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 +523,12 @@ 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 +678,7 @@ 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 +725,17 @@ 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);
}
@ -1199,12 +1191,14 @@ 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)

11
drivers/dma/ioat/dma.h
View file

@ -61,7 +61,7 @@
* @intr_quirk: interrupt setup quirk (for ioat_v1 devices)
* @enumerate_channels: hw version specific channel enumeration
* @reset_hw: hw version specific channel (re)initialization
* @cleanup_tasklet: select between the v2 and v3 cleanup routines
* @cleanup_fn: select between the v2 and v3 cleanup routines
* @timer_fn: select between the v2 and v3 timer watchdog routines
* @self_test: hardware version specific self test for each supported op type
*
@ -80,7 +80,7 @@ struct ioatdma_device {
void (*intr_quirk)(struct ioatdma_device *device);
int (*enumerate_channels)(struct ioatdma_device *device);
int (*reset_hw)(struct ioat_chan_common *chan);
void (*cleanup_tasklet)(unsigned long data);
void (*cleanup_fn)(unsigned long data);
void (*timer_fn)(unsigned long data);
int (*self_test)(struct ioatdma_device *device);
};
@ -337,10 +337,9 @@ struct dca_provider * __devinit ioat_dca_init(struct pci_dev *pdev,
void __iomem *iobase);
unsigned long ioat_get_current_completion(struct ioat_chan_common *chan);
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);
struct ioat_chan_common *chan, int idx);
enum dma_status ioat_is_dma_complete(struct dma_chan *c, dma_cookie_t cookie,
dma_cookie_t *done, dma_cookie_t *used);
void ioat_dma_unmap(struct ioat_chan_common *chan, enum dma_ctrl_flags flags,
size_t len, struct ioat_dma_descriptor *hw);
bool ioat_cleanup_preamble(struct ioat_chan_common *chan,

34
drivers/dma/ioat/dma_v2.c
View file

@ -199,9 +199,9 @@ static void ioat2_cleanup(struct ioat2_dma_chan *ioat)
spin_unlock_bh(&chan->cleanup_lock);
}
void ioat2_cleanup_tasklet(unsigned long data)
void ioat2_cleanup_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
ioat2_cleanup(ioat);
writew(IOAT_CHANCTRL_RUN, ioat->base.reg_base + IOAT_CHANCTRL_OFFSET);
@ -283,7 +283,7 @@ static void ioat2_restart_channel(struct ioat2_dma_chan *ioat)
void ioat2_timer_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
struct ioat_chan_common *chan = &ioat->base;
spin_lock_bh(&chan->cleanup_lock);
@ -389,10 +389,7 @@ int ioat2_enumerate_channels(struct ioatdma_device *device)
if (!ioat)
break;
ioat_init_channel(device, &ioat->base, i,
device->timer_fn,
device->cleanup_tasklet,
(unsigned long) ioat);
ioat_init_channel(device, &ioat->base, i);
ioat->xfercap_log = xfercap_log;
spin_lock_init(&ioat->ring_lock);
if (device->reset_hw(&ioat->base)) {
@ -692,7 +689,7 @@ int ioat2_alloc_and_lock(u16 *idx, struct ioat2_dma_chan *ioat, int num_descs)
mod_timer(&chan->timer, jiffies + COMPLETION_TIMEOUT);
spin_unlock_bh(&chan->cleanup_lock);
device->timer_fn((unsigned long) ioat);
device->timer_fn((unsigned long) &chan->common);
} else
spin_unlock_bh(&chan->cleanup_lock);
return -ENOMEM;
@ -776,7 +773,7 @@ void ioat2_free_chan_resources(struct dma_chan *c)
tasklet_disable(&chan->cleanup_task);
del_timer_sync(&chan->timer);
device->cleanup_tasklet((unsigned long) ioat);
device->cleanup_fn((unsigned long) c);
device->reset_hw(chan);
spin_lock_bh(&ioat->ring_lock);
@ -809,21 +806,6 @@ void ioat2_free_chan_resources(struct dma_chan *c)
ioat->dmacount = 0;
}
enum dma_status
ioat2_is_complete(struct dma_chan *c, dma_cookie_t cookie,
dma_cookie_t *done, dma_cookie_t *used)
{
struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
struct ioatdma_device *device = ioat->base.device;
if (ioat_is_complete(c, cookie, done, used) == DMA_SUCCESS)
return DMA_SUCCESS;
device->cleanup_tasklet((unsigned long) ioat);
return ioat_is_complete(c, cookie, done, used);
}
static ssize_t ring_size_show(struct dma_chan *c, char *page)
{
struct ioat2_dma_chan *ioat = to_ioat2_chan(c);
@ -864,7 +846,7 @@ int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca)
device->enumerate_channels = ioat2_enumerate_channels;
device->reset_hw = ioat2_reset_hw;
device->cleanup_tasklet = ioat2_cleanup_tasklet;
device->cleanup_fn = ioat2_cleanup_event;
device->timer_fn = ioat2_timer_event;
device->self_test = ioat_dma_self_test;
dma = &device->common;
@ -872,7 +854,7 @@ int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca)
dma->device_issue_pending = ioat2_issue_pending;
dma->device_alloc_chan_resources = ioat2_alloc_chan_resources;
dma->device_free_chan_resources = ioat2_free_chan_resources;
dma->device_is_tx_complete = ioat2_is_complete;
dma->device_is_tx_complete = ioat_is_dma_complete;
err = ioat_probe(device);
if (err)

4
drivers/dma/ioat/dma_v2.h
View file

@ -176,12 +176,10 @@ ioat2_dma_prep_memcpy_lock(struct dma_chan *c, dma_addr_t dma_dest,
void ioat2_issue_pending(struct dma_chan *chan);
int ioat2_alloc_chan_resources(struct dma_chan *c);
void ioat2_free_chan_resources(struct dma_chan *c);
enum dma_status ioat2_is_complete(struct dma_chan *c, dma_cookie_t cookie,
dma_cookie_t *done, dma_cookie_t *used);
void __ioat2_restart_chan(struct ioat2_dma_chan *ioat);
bool reshape_ring(struct ioat2_dma_chan *ioat, int order);
void __ioat2_issue_pending(struct ioat2_dma_chan *ioat);
void ioat2_cleanup_tasklet(unsigned long data);
void ioat2_cleanup_event(unsigned long data);
void ioat2_timer_event(unsigned long data);
int ioat2_quiesce(struct ioat_chan_common *chan, unsigned long tmo);
int ioat2_reset_sync(struct ioat_chan_common *chan, unsigned long tmo);

12
drivers/dma/ioat/dma_v3.c
View file

@ -358,9 +358,9 @@ static void ioat3_cleanup_sync(struct ioat2_dma_chan *ioat)
spin_unlock_bh(&chan->cleanup_lock);
}
static void ioat3_cleanup_tasklet(unsigned long data)
static void ioat3_cleanup_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
ioat3_cleanup_sync(ioat);
writew(IOAT_CHANCTRL_RUN, ioat->base.reg_base + IOAT_CHANCTRL_OFFSET);
@ -380,7 +380,7 @@ static void ioat3_restart_channel(struct ioat2_dma_chan *ioat)
static void ioat3_timer_event(unsigned long data)
{
struct ioat2_dma_chan *ioat = (void *) data;
struct ioat2_dma_chan *ioat = to_ioat2_chan((void *) data);
struct ioat_chan_common *chan = &ioat->base;
spin_lock_bh(&chan->cleanup_lock);
@ -1259,11 +1259,11 @@ int __devinit ioat3_dma_probe(struct ioatdma_device *device, int dca)
if (is_raid_device) {
dma->device_is_tx_complete = ioat3_is_complete;
device->cleanup_tasklet = ioat3_cleanup_tasklet;
device->cleanup_fn = ioat3_cleanup_event;
device->timer_fn = ioat3_timer_event;
} else {
dma->device_is_tx_complete = ioat2_is_complete;
device->cleanup_tasklet = ioat2_cleanup_tasklet;
dma->device_is_tx_complete = ioat_is_dma_complete;
device->cleanup_fn = ioat2_cleanup_event;
device->timer_fn = ioat2_timer_event;
}