* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/compiler.h>
#include <linux/io.h>
+#include <linux/slab.h>
-#include <mach/cputype.h>
-#include <mach/memory.h>
-#include <mach/hardware.h>
-#include <mach/irqs.h>
#include <mach/edma.h>
-#include <mach/mux.h>
-
/* Offsets matching "struct edmacc_param" */
#define PARM_OPT 0x00
*/
DECLARE_BITMAP(edma_inuse, EDMA_MAX_PARAMENTRY);
- /* The edma_noevent bit for each channel is clear unless
- * it doesn't trigger DMA events on this platform. It uses a
- * bit of SOC-specific initialization code.
+ /* The edma_unused bit for each channel is clear unless
+ * it is not being used on this platform. It uses a bit
+ * of SOC-specific initialization code.
*/
- DECLARE_BITMAP(edma_noevent, EDMA_MAX_DMACH);
+ DECLARE_BITMAP(edma_unused, EDMA_MAX_DMACH);
unsigned irq_res_start;
unsigned irq_res_end;
} intr_data[EDMA_MAX_DMACH];
};
-static struct edma *edma_info[EDMA_MAX_CC];
+static struct edma *edma_cc[EDMA_MAX_CC];
+static int arch_num_cc;
/* dummy param set used to (re)initialize parameter RAM slots */
static const struct edmacc_param dummy_paramset = {
/* default to low priority queue */
if (queue_no == EVENTQ_DEFAULT)
- queue_no = edma_info[ctlr]->default_queue;
+ queue_no = edma_cc[ctlr]->default_queue;
queue_no &= 7;
edma_modify_array(ctlr, EDMA_DMAQNUM, (ch_no >> 3),
ctlr = EDMA_CTLR(lch);
lch = EDMA_CHAN_SLOT(lch);
- if (!callback) {
+ if (!callback)
edma_shadow0_write_array(ctlr, SH_IECR, lch >> 5,
- (1 << (lch & 0x1f)));
- }
+ BIT(lch & 0x1f));
- edma_info[ctlr]->intr_data[lch].callback = callback;
- edma_info[ctlr]->intr_data[lch].data = data;
+ edma_cc[ctlr]->intr_data[lch].callback = callback;
+ edma_cc[ctlr]->intr_data[lch].data = data;
if (callback) {
edma_shadow0_write_array(ctlr, SH_ICR, lch >> 5,
- (1 << (lch & 0x1f)));
+ BIT(lch & 0x1f));
edma_shadow0_write_array(ctlr, SH_IESR, lch >> 5,
- (1 << (lch & 0x1f)));
+ BIT(lch & 0x1f));
}
}
static int irq2ctlr(int irq)
{
- if (irq >= edma_info[0]->irq_res_start &&
- irq <= edma_info[0]->irq_res_end)
+ if (irq >= edma_cc[0]->irq_res_start && irq <= edma_cc[0]->irq_res_end)
return 0;
- else if (irq >= edma_info[1]->irq_res_start &&
- irq <= edma_info[1]->irq_res_end)
+ else if (irq >= edma_cc[1]->irq_res_start &&
+ irq <= edma_cc[1]->irq_res_end)
return 1;
return -1;
while (1) {
int j;
- if (edma_shadow0_read_array(ctlr, SH_IPR, 0))
+ if (edma_shadow0_read_array(ctlr, SH_IPR, 0) &
+ edma_shadow0_read_array(ctlr, SH_IER, 0))
j = 0;
- else if (edma_shadow0_read_array(ctlr, SH_IPR, 1))
+ else if (edma_shadow0_read_array(ctlr, SH_IPR, 1) &
+ edma_shadow0_read_array(ctlr, SH_IER, 1))
j = 1;
else
break;
edma_shadow0_read_array(ctlr, SH_IPR, j));
for (i = 0; i < 32; i++) {
int k = (j << 5) + i;
- if (edma_shadow0_read_array(ctlr, SH_IPR, j) &
- (1 << i)) {
+ if ((edma_shadow0_read_array(ctlr, SH_IPR, j) & BIT(i))
+ && (edma_shadow0_read_array(ctlr,
+ SH_IER, j) & BIT(i))) {
/* Clear the corresponding IPR bits */
edma_shadow0_write_array(ctlr, SH_ICR, j,
- (1 << i));
- if (edma_info[ctlr]->intr_data[k].callback) {
- edma_info[ctlr]->intr_data[k].callback(
+ BIT(i));
+ if (edma_cc[ctlr]->intr_data[k].callback)
+ edma_cc[ctlr]->intr_data[k].callback(
k, DMA_COMPLETE,
- edma_info[ctlr]->intr_data[k].
+ edma_cc[ctlr]->intr_data[k].
data);
- }
}
}
cnt++;
for (i = 0; i < 32; i++) {
int k = (j << 5) + i;
if (edma_read_array(ctlr, EDMA_EMR, j) &
- (1 << i)) {
+ BIT(i)) {
/* Clear the corresponding EMR bits */
edma_write_array(ctlr, EDMA_EMCR, j,
- 1 << i);
+ BIT(i));
/* Clear any SER */
edma_shadow0_write_array(ctlr, SH_SECR,
- j, (1 << i));
- if (edma_info[ctlr]->intr_data[k].
+ j, BIT(i));
+ if (edma_cc[ctlr]->intr_data[k].
callback) {
- edma_info[ctlr]->intr_data[k].
+ edma_cc[ctlr]->intr_data[k].
callback(k,
DMA_CC_ERROR,
- edma_info[ctlr]->intr_data
+ edma_cc[ctlr]->intr_data
[k].data);
}
}
dev_dbg(data, "QEMR %02x\n",
edma_read(ctlr, EDMA_QEMR));
for (i = 0; i < 8; i++) {
- if (edma_read(ctlr, EDMA_QEMR) & (1 << i)) {
+ if (edma_read(ctlr, EDMA_QEMR) & BIT(i)) {
/* Clear the corresponding IPR bits */
- edma_write(ctlr, EDMA_QEMCR, 1 << i);
+ edma_write(ctlr, EDMA_QEMCR, BIT(i));
edma_shadow0_write(ctlr, SH_QSECR,
- (1 << i));
+ BIT(i));
/* NOTE: not reported!! */
}
* to just write CCERRCLR with CCERR value...
*/
for (i = 0; i < 8; i++) {
- if (edma_read(ctlr, EDMA_CCERR) & (1 << i)) {
+ if (edma_read(ctlr, EDMA_CCERR) & BIT(i)) {
/* Clear the corresponding IPR bits */
- edma_write(ctlr, EDMA_CCERRCLR, 1 << i);
+ edma_write(ctlr, EDMA_CCERRCLR, BIT(i));
/* NOTE: not reported!! */
}
if ((edma_read_array(ctlr, EDMA_EMR, 0) == 0)
&& (edma_read_array(ctlr, EDMA_EMR, 1) == 0)
&& (edma_read(ctlr, EDMA_QEMR) == 0)
- && (edma_read(ctlr, EDMA_CCERR) == 0)) {
+ && (edma_read(ctlr, EDMA_CCERR) == 0))
break;
- }
cnt++;
if (cnt > 10)
break;
return IRQ_HANDLED;
}
-static int reserve_contiguous_params(int ctlr, unsigned int id,
- unsigned int num_params,
- unsigned int start_param)
+static int reserve_contiguous_slots(int ctlr, unsigned int id,
+ unsigned int num_slots,
+ unsigned int start_slot)
{
int i, j;
- unsigned int count = num_params;
+ unsigned int count = num_slots;
+ int stop_slot = start_slot;
+ DECLARE_BITMAP(tmp_inuse, EDMA_MAX_PARAMENTRY);
- for (i = start_param; i < edma_info[ctlr]->num_slots; ++i) {
+ for (i = start_slot; i < edma_cc[ctlr]->num_slots; ++i) {
j = EDMA_CHAN_SLOT(i);
- if (!test_and_set_bit(j, edma_info[ctlr]->edma_inuse))
+ if (!test_and_set_bit(j, edma_cc[ctlr]->edma_inuse)) {
+ /* Record our current beginning slot */
+ if (count == num_slots)
+ stop_slot = i;
+
count--;
+ set_bit(j, tmp_inuse);
+
if (count == 0)
break;
- else if (id == EDMA_CONT_PARAMS_FIXED_EXACT)
- break;
- else
- count = num_params;
+ } else {
+ clear_bit(j, tmp_inuse);
+
+ if (id == EDMA_CONT_PARAMS_FIXED_EXACT) {
+ stop_slot = i;
+ break;
+ } else {
+ count = num_slots;
+ }
+ }
}
/*
* We have to clear any bits that we set
- * if we run out parameter RAMs, i.e we do find a set
- * of contiguous parameter RAMs but do not find the exact number
- * requested as we may reach the total number of parameter RAMs
+ * if we run out parameter RAM slots, i.e we do find a set
+ * of contiguous parameter RAM slots but do not find the exact number
+ * requested as we may reach the total number of parameter RAM slots
*/
- if (count) {
- for (j = i - num_params + count + 1; j <= i ; ++j)
- clear_bit(j, edma_info[ctlr]->edma_inuse);
+ if (i == edma_cc[ctlr]->num_slots)
+ stop_slot = i;
+
+ for (j = start_slot; j < stop_slot; j++)
+ if (test_bit(j, tmp_inuse))
+ clear_bit(j, edma_cc[ctlr]->edma_inuse);
+ if (count)
return -EBUSY;
- }
- for (j = i - num_params + 1; j <= i; ++j)
+ for (j = i - num_slots + 1; j <= i; ++j)
memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(j),
&dummy_paramset, PARM_SIZE);
- return EDMA_CTLR_CHAN(ctlr, i - num_params + 1);
+ return EDMA_CTLR_CHAN(ctlr, i - num_slots + 1);
+}
+
+static int prepare_unused_channel_list(struct device *dev, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ int i, ctlr;
+
+ for (i = 0; i < pdev->num_resources; i++) {
+ if ((pdev->resource[i].flags & IORESOURCE_DMA) &&
+ (int)pdev->resource[i].start >= 0) {
+ ctlr = EDMA_CTLR(pdev->resource[i].start);
+ clear_bit(EDMA_CHAN_SLOT(pdev->resource[i].start),
+ edma_cc[ctlr]->edma_unused);
+ }
+ }
+
+ return 0;
}
/*-----------------------------------------------------------------------*/
+static bool unused_chan_list_done;
+
/* Resource alloc/free: dma channels, parameter RAM slots */
/**
void *data,
enum dma_event_q eventq_no)
{
- unsigned i, done, ctlr = 0;
+ unsigned i, done = 0, ctlr = 0;
+ int ret = 0;
+
+ if (!unused_chan_list_done) {
+ /*
+ * Scan all the platform devices to find out the EDMA channels
+ * used and clear them in the unused list, making the rest
+ * available for ARM usage.
+ */
+ ret = bus_for_each_dev(&platform_bus_type, NULL, NULL,
+ prepare_unused_channel_list);
+ if (ret < 0)
+ return ret;
+
+ unused_chan_list_done = true;
+ }
if (channel >= 0) {
ctlr = EDMA_CTLR(channel);
}
if (channel < 0) {
- for (i = 0; i < EDMA_MAX_CC; i++) {
+ for (i = 0; i < arch_num_cc; i++) {
channel = 0;
for (;;) {
- channel = find_next_bit(edma_info[i]->
- edma_noevent,
- edma_info[i]->num_channels,
+ channel = find_next_bit(edma_cc[i]->edma_unused,
+ edma_cc[i]->num_channels,
channel);
- if (channel == edma_info[i]->num_channels)
- return -ENOMEM;
+ if (channel == edma_cc[i]->num_channels)
+ break;
if (!test_and_set_bit(channel,
- edma_info[i]->edma_inuse)) {
+ edma_cc[i]->edma_inuse)) {
done = 1;
ctlr = i;
break;
if (done)
break;
}
- } else if (channel >= edma_info[ctlr]->num_channels) {
+ if (!done)
+ return -ENOMEM;
+ } else if (channel >= edma_cc[ctlr]->num_channels) {
return -EINVAL;
- } else if (test_and_set_bit(channel, edma_info[ctlr]->edma_inuse)) {
+ } else if (test_and_set_bit(channel, edma_cc[ctlr]->edma_inuse)) {
return -EBUSY;
}
/* ensure access through shadow region 0 */
- edma_or_array2(ctlr, EDMA_DRAE, 0, channel >> 5, 1 << (channel & 0x1f));
+ edma_or_array2(ctlr, EDMA_DRAE, 0, channel >> 5, BIT(channel & 0x1f));
/* ensure no events are pending */
edma_stop(EDMA_CTLR_CHAN(ctlr, channel));
map_dmach_queue(ctlr, channel, eventq_no);
- return channel;
+ return EDMA_CTLR_CHAN(ctlr, channel);
}
EXPORT_SYMBOL(edma_alloc_channel);
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
- if (channel >= edma_info[ctlr]->num_channels)
+ if (channel >= edma_cc[ctlr]->num_channels)
return;
setup_dma_interrupt(channel, NULL, NULL);
memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(channel),
&dummy_paramset, PARM_SIZE);
- clear_bit(channel, edma_info[ctlr]->edma_inuse);
+ clear_bit(channel, edma_cc[ctlr]->edma_inuse);
}
EXPORT_SYMBOL(edma_free_channel);
slot = EDMA_CHAN_SLOT(slot);
if (slot < 0) {
- slot = edma_info[ctlr]->num_channels;
+ slot = edma_cc[ctlr]->num_channels;
for (;;) {
- slot = find_next_zero_bit(edma_info[ctlr]->edma_inuse,
- edma_info[ctlr]->num_slots, slot);
- if (slot == edma_info[ctlr]->num_slots)
+ slot = find_next_zero_bit(edma_cc[ctlr]->edma_inuse,
+ edma_cc[ctlr]->num_slots, slot);
+ if (slot == edma_cc[ctlr]->num_slots)
return -ENOMEM;
- if (!test_and_set_bit(slot,
- edma_info[ctlr]->edma_inuse))
+ if (!test_and_set_bit(slot, edma_cc[ctlr]->edma_inuse))
break;
}
- } else if (slot < edma_info[ctlr]->num_channels ||
- slot >= edma_info[ctlr]->num_slots) {
+ } else if (slot < edma_cc[ctlr]->num_channels ||
+ slot >= edma_cc[ctlr]->num_slots) {
return -EINVAL;
- } else if (test_and_set_bit(slot, edma_info[ctlr]->edma_inuse)) {
+ } else if (test_and_set_bit(slot, edma_cc[ctlr]->edma_inuse)) {
return -EBUSY;
}
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot < edma_info[ctlr]->num_channels ||
- slot >= edma_info[ctlr]->num_slots)
+ if (slot < edma_cc[ctlr]->num_channels ||
+ slot >= edma_cc[ctlr]->num_slots)
return;
memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot),
&dummy_paramset, PARM_SIZE);
- clear_bit(slot, edma_info[ctlr]->edma_inuse);
+ clear_bit(slot, edma_cc[ctlr]->edma_inuse);
}
EXPORT_SYMBOL(edma_free_slot);
/**
* edma_alloc_cont_slots- alloc contiguous parameter RAM slots
* The API will return the starting point of a set of
- * contiguous PARAM's that have been requested
+ * contiguous parameter RAM slots that have been requested
*
* @id: can only be EDMA_CONT_PARAMS_ANY or EDMA_CONT_PARAMS_FIXED_EXACT
* or EDMA_CONT_PARAMS_FIXED_NOT_EXACT
- * @count: number of contiguous Paramter RAM's
- * @param - the start value of Parameter RAM that should be passed if id
+ * @count: number of contiguous Paramter RAM slots
+ * @slot - the start value of Parameter RAM slot that should be passed if id
* is EDMA_CONT_PARAMS_FIXED_EXACT or EDMA_CONT_PARAMS_FIXED_NOT_EXACT
*
* If id is EDMA_CONT_PARAMS_ANY then the API starts looking for a set of
- * contiguous Parameter RAMs from parameter RAM 64 in the case of DaVinci SOCs
- * and 32 in the case of Primus
+ * contiguous Parameter RAM slots from parameter RAM 64 in the case of
+ * DaVinci SOCs and 32 in the case of DA8xx SOCs.
*
* If id is EDMA_CONT_PARAMS_FIXED_EXACT then the API starts looking for a
- * set of contiguous parameter RAMs from the "param" that is passed as an
+ * set of contiguous parameter RAM slots from the "slot" that is passed as an
* argument to the API.
*
* If id is EDMA_CONT_PARAMS_FIXED_NOT_EXACT then the API initially tries
- * starts looking for a set of contiguous parameter RAMs from the "param"
+ * starts looking for a set of contiguous parameter RAMs from the "slot"
* that is passed as an argument to the API. On failure the API will try to
- * find a set of contiguous Parameter RAMs in the remaining Parameter RAMs
+ * find a set of contiguous Parameter RAM slots from the remaining Parameter
+ * RAM slots
*/
int edma_alloc_cont_slots(unsigned ctlr, unsigned int id, int slot, int count)
{
* the number of channels and lesser than the total number
* of slots
*/
- if (slot < edma_info[ctlr]->num_channels ||
- slot >= edma_info[ctlr]->num_slots)
+ if ((id != EDMA_CONT_PARAMS_ANY) &&
+ (slot < edma_cc[ctlr]->num_channels ||
+ slot >= edma_cc[ctlr]->num_slots))
return -EINVAL;
/*
- * The number of parameter RAMs requested cannot be less than 1
+ * The number of parameter RAM slots requested cannot be less than 1
* and cannot be more than the number of slots minus the number of
* channels
*/
if (count < 1 || count >
- (edma_info[ctlr]->num_slots - edma_info[ctlr]->num_channels))
+ (edma_cc[ctlr]->num_slots - edma_cc[ctlr]->num_channels))
return -EINVAL;
switch (id) {
case EDMA_CONT_PARAMS_ANY:
- return reserve_contiguous_params(ctlr, id, count,
- edma_info[ctlr]->num_channels);
+ return reserve_contiguous_slots(ctlr, id, count,
+ edma_cc[ctlr]->num_channels);
case EDMA_CONT_PARAMS_FIXED_EXACT:
case EDMA_CONT_PARAMS_FIXED_NOT_EXACT:
- return reserve_contiguous_params(ctlr, id, count, slot);
+ return reserve_contiguous_slots(ctlr, id, count, slot);
default:
return -EINVAL;
}
EXPORT_SYMBOL(edma_alloc_cont_slots);
/**
- * edma_free_cont_slots - deallocate DMA parameter RAMs
- * @slot: first parameter RAM of a set of parameter RAMs to be freed
- * @count: the number of contiguous parameter RAMs to be freed
+ * edma_free_cont_slots - deallocate DMA parameter RAM slots
+ * @slot: first parameter RAM of a set of parameter RAM slots to be freed
+ * @count: the number of contiguous parameter RAM slots to be freed
*
* This deallocates the parameter RAM slots allocated by
* edma_alloc_cont_slots.
* Callers/applications need to keep track of sets of contiguous
- * parameter RAMs that have been allocated using the edma_alloc_cont_slots
+ * parameter RAM slots that have been allocated using the edma_alloc_cont_slots
* API.
* Callers are responsible for ensuring the slots are inactive, and will
* not be activated.
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot < edma_info[ctlr]->num_channels ||
- slot >= edma_info[ctlr]->num_slots ||
+ if (slot < edma_cc[ctlr]->num_channels ||
+ slot >= edma_cc[ctlr]->num_slots ||
count < 1)
return -EINVAL;
memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot_to_free),
&dummy_paramset, PARM_SIZE);
- clear_bit(slot_to_free, edma_info[ctlr]->edma_inuse);
+ clear_bit(slot_to_free, edma_cc[ctlr]->edma_inuse);
}
return 0;
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot < edma_info[ctlr]->num_slots) {
+ if (slot < edma_cc[ctlr]->num_slots) {
unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot);
if (mode) {
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot < edma_info[ctlr]->num_slots) {
+ if (slot < edma_cc[ctlr]->num_slots) {
unsigned int i = edma_parm_read(ctlr, PARM_OPT, slot);
if (mode) {
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot < edma_info[ctlr]->num_slots) {
+ if (slot < edma_cc[ctlr]->num_slots) {
edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot,
0xffff0000, src_bidx);
edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot,
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot < edma_info[ctlr]->num_slots) {
+ if (slot < edma_cc[ctlr]->num_slots) {
edma_parm_modify(ctlr, PARM_SRC_DST_BIDX, slot,
0x0000ffff, dest_bidx << 16);
edma_parm_modify(ctlr, PARM_SRC_DST_CIDX, slot,
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot < edma_info[ctlr]->num_slots) {
+ if (slot < edma_cc[ctlr]->num_slots) {
edma_parm_modify(ctlr, PARM_LINK_BCNTRLD, slot,
0x0000ffff, bcnt_rld << 16);
if (sync_mode == ASYNC)
ctlr_to = EDMA_CTLR(to);
to = EDMA_CHAN_SLOT(to);
- if (from >= edma_info[ctlr_from]->num_slots)
+ if (from >= edma_cc[ctlr_from]->num_slots)
return;
- if (to >= edma_info[ctlr_to]->num_slots)
+ if (to >= edma_cc[ctlr_to]->num_slots)
return;
edma_parm_modify(ctlr_from, PARM_LINK_BCNTRLD, from, 0xffff0000,
PARM_OFFSET(to));
ctlr = EDMA_CTLR(from);
from = EDMA_CHAN_SLOT(from);
- if (from >= edma_info[ctlr]->num_slots)
+ if (from >= edma_cc[ctlr]->num_slots)
return;
edma_parm_or(ctlr, PARM_LINK_BCNTRLD, from, 0xffff);
}
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot >= edma_info[ctlr]->num_slots)
+ if (slot >= edma_cc[ctlr]->num_slots)
return;
memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), param,
PARM_SIZE);
ctlr = EDMA_CTLR(slot);
slot = EDMA_CHAN_SLOT(slot);
- if (slot >= edma_info[ctlr]->num_slots)
+ if (slot >= edma_cc[ctlr]->num_slots)
return;
memcpy_fromio(param, edmacc_regs_base[ctlr] + PARM_OFFSET(slot),
PARM_SIZE);
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
- if (channel < edma_info[ctlr]->num_channels) {
- unsigned int mask = (1 << (channel & 0x1f));
+ if (channel < edma_cc[ctlr]->num_channels) {
+ unsigned int mask = BIT(channel & 0x1f);
edma_shadow0_write_array(ctlr, SH_EECR, channel >> 5, mask);
}
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
- if (channel < edma_info[ctlr]->num_channels) {
- unsigned int mask = (1 << (channel & 0x1f));
+ if (channel < edma_cc[ctlr]->num_channels) {
+ unsigned int mask = BIT(channel & 0x1f);
edma_shadow0_write_array(ctlr, SH_EESR, channel >> 5, mask);
}
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
- if (channel < edma_info[ctlr]->num_channels) {
+ if (channel < edma_cc[ctlr]->num_channels) {
int j = channel >> 5;
- unsigned int mask = (1 << (channel & 0x1f));
+ unsigned int mask = BIT(channel & 0x1f);
/* EDMA channels without event association */
- if (test_bit(channel, edma_info[ctlr]->edma_noevent)) {
+ if (test_bit(channel, edma_cc[ctlr]->edma_unused)) {
pr_debug("EDMA: ESR%d %08x\n", j,
edma_shadow0_read_array(ctlr, SH_ESR, j));
edma_shadow0_write_array(ctlr, SH_ESR, j, mask);
/* EDMA channel with event association */
pr_debug("EDMA: ER%d %08x\n", j,
edma_shadow0_read_array(ctlr, SH_ER, j));
- /* Clear any pending error */
+ /* Clear any pending event or error */
+ edma_write_array(ctlr, EDMA_ECR, j, mask);
edma_write_array(ctlr, EDMA_EMCR, j, mask);
/* Clear any SER */
edma_shadow0_write_array(ctlr, SH_SECR, j, mask);
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
- if (channel < edma_info[ctlr]->num_channels) {
+ if (channel < edma_cc[ctlr]->num_channels) {
int j = channel >> 5;
- unsigned int mask = (1 << (channel & 0x1f));
+ unsigned int mask = BIT(channel & 0x1f);
edma_shadow0_write_array(ctlr, SH_EECR, j, mask);
edma_shadow0_write_array(ctlr, SH_ECR, j, mask);
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
- if (channel < edma_info[ctlr]->num_channels) {
+ if (channel < edma_cc[ctlr]->num_channels) {
int j = (channel >> 5);
- unsigned int mask = 1 << (channel & 0x1f);
+ unsigned int mask = BIT(channel & 0x1f);
pr_debug("EDMA: EMR%d %08x\n", j,
edma_read_array(ctlr, EDMA_EMR, j));
edma_write_array(ctlr, EDMA_EMCR, j, mask);
/* Clear any SER */
edma_shadow0_write_array(ctlr, SH_SECR, j, mask);
- edma_write(ctlr, EDMA_CCERRCLR, (1 << 16) | 0x3);
+ edma_write(ctlr, EDMA_CCERRCLR, BIT(16) | BIT(1) | BIT(0));
}
}
EXPORT_SYMBOL(edma_clean_channel);
ctlr = EDMA_CTLR(channel);
channel = EDMA_CHAN_SLOT(channel);
- if (channel >= edma_info[ctlr]->num_channels)
+ if (channel >= edma_cc[ctlr]->num_channels)
return;
if (channel < 32)
- edma_write(ctlr, EDMA_ECR, 1 << channel);
+ edma_write(ctlr, EDMA_ECR, BIT(channel));
else
- edma_write(ctlr, EDMA_ECRH, 1 << (channel - 32));
+ edma_write(ctlr, EDMA_ECRH, BIT(channel - 32));
}
EXPORT_SYMBOL(edma_clear_event);
const s8 (*queue_tc_mapping)[2];
int i, j, found = 0;
int status = -1;
- const s8 *noevent;
int irq[EDMA_MAX_CC] = {0, 0};
int err_irq[EDMA_MAX_CC] = {0, 0};
struct resource *r[EDMA_MAX_CC] = {NULL};
break;
else
return -ENODEV;
- } else
+ } else {
found = 1;
+ }
len[j] = resource_size(r[j]);
goto fail1;
}
- edma_info[j] = kmalloc(sizeof(struct edma), GFP_KERNEL);
- if (!edma_info[j]) {
+ edma_cc[j] = kmalloc(sizeof(struct edma), GFP_KERNEL);
+ if (!edma_cc[j]) {
status = -ENOMEM;
goto fail1;
}
- memset(edma_info[j], 0, sizeof(struct edma));
+ memset(edma_cc[j], 0, sizeof(struct edma));
- edma_info[j]->num_channels = min_t(unsigned, info[j].n_channel,
+ edma_cc[j]->num_channels = min_t(unsigned, info[j].n_channel,
EDMA_MAX_DMACH);
- edma_info[j]->num_slots = min_t(unsigned, info[j].n_slot,
+ edma_cc[j]->num_slots = min_t(unsigned, info[j].n_slot,
EDMA_MAX_PARAMENTRY);
- edma_info[j]->num_cc = min_t(unsigned, info[j].n_cc,
- EDMA_MAX_CC);
+ edma_cc[j]->num_cc = min_t(unsigned, info[j].n_cc, EDMA_MAX_CC);
- edma_info[j]->default_queue = info[j].default_queue;
- if (!edma_info[j]->default_queue)
- edma_info[j]->default_queue = EVENTQ_1;
+ edma_cc[j]->default_queue = info[j].default_queue;
+ if (!edma_cc[j]->default_queue)
+ edma_cc[j]->default_queue = EVENTQ_1;
dev_dbg(&pdev->dev, "DMA REG BASE ADDR=%p\n",
edmacc_regs_base[j]);
- for (i = 0; i < edma_info[j]->num_slots; i++)
+ for (i = 0; i < edma_cc[j]->num_slots; i++)
memcpy_toio(edmacc_regs_base[j] + PARM_OFFSET(i),
&dummy_paramset, PARM_SIZE);
- noevent = info[j].noevent;
- if (noevent) {
- while (*noevent != -1)
- set_bit(*noevent++, edma_info[j]->edma_noevent);
- }
+ /* Mark all channels as unused */
+ memset(edma_cc[j]->edma_unused, 0xff,
+ sizeof(edma_cc[j]->edma_unused));
sprintf(irq_name, "edma%d", j);
irq[j] = platform_get_irq_byname(pdev, irq_name);
- edma_info[j]->irq_res_start = irq[j];
+ edma_cc[j]->irq_res_start = irq[j];
status = request_irq(irq[j], dma_irq_handler, 0, "edma",
&pdev->dev);
if (status < 0) {
sprintf(irq_name, "edma%d_err", j);
err_irq[j] = platform_get_irq_byname(pdev, irq_name);
- edma_info[j]->irq_res_end = err_irq[j];
+ edma_cc[j]->irq_res_end = err_irq[j];
status = request_irq(err_irq[j], dma_ccerr_handler, 0,
"edma_error", &pdev->dev);
if (status < 0) {
* specified. This way, long transfers on the low priority queue
* started by the codec engine will not cause audio defects.
*/
- for (i = 0; i < edma_info[j]->num_channels; i++)
+ for (i = 0; i < edma_cc[j]->num_channels; i++)
map_dmach_queue(j, i, EVENTQ_1);
queue_tc_mapping = info[j].queue_tc_mapping;
edma_write_array2(j, EDMA_DRAE, i, 1, 0x0);
edma_write_array(j, EDMA_QRAE, i, 0x0);
}
+ arch_num_cc++;
}
if (tc_errs_handled) {
release_mem_region(r[i]->start, len[i]);
if (edmacc_regs_base[i])
iounmap(edmacc_regs_base[i]);
- kfree(edma_info[i]);
+ kfree(edma_cc[i]);
}
return status;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff