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-rw-r--r--arch/arm/include/asm/dma.h32
-rw-r--r--arch/arm/include/asm/mach/dma.h12
-rw-r--r--arch/arm/kernel/dma-isa.c42
-rw-r--r--arch/arm/kernel/dma.c86
-rw-r--r--arch/arm/mach-footbridge/dma.c6
-rw-r--r--arch/arm/mach-rpc/dma.c20
6 files changed, 98 insertions, 100 deletions
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index df5638f3643..c5557a650d1 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -19,8 +19,6 @@
#include <asm/system.h>
#include <asm/scatterlist.h>
-typedef unsigned int dmach_t;
-
#include <mach/isa-dma.h>
/*
@@ -52,44 +50,44 @@ static inline void release_dma_lock(unsigned long flags)
/* Clear the 'DMA Pointer Flip Flop'.
* Write 0 for LSB/MSB, 1 for MSB/LSB access.
*/
-#define clear_dma_ff(channel)
+#define clear_dma_ff(chan)
/* Set only the page register bits of the transfer address.
*
* NOTE: This is an architecture specific function, and should
* be hidden from the drivers
*/
-extern void set_dma_page(dmach_t channel, char pagenr);
+extern void set_dma_page(unsigned int chan, char pagenr);
/* Request a DMA channel
*
* Some architectures may need to do allocate an interrupt
*/
-extern int request_dma(dmach_t channel, const char * device_id);
+extern int request_dma(unsigned int chan, const char * device_id);
/* Free a DMA channel
*
* Some architectures may need to do free an interrupt
*/
-extern void free_dma(dmach_t channel);
+extern void free_dma(unsigned int chan);
/* Enable DMA for this channel
*
* On some architectures, this may have other side effects like
* enabling an interrupt and setting the DMA registers.
*/
-extern void enable_dma(dmach_t channel);
+extern void enable_dma(unsigned int chan);
/* Disable DMA for this channel
*
* On some architectures, this may have other side effects like
* disabling an interrupt or whatever.
*/
-extern void disable_dma(dmach_t channel);
+extern void disable_dma(unsigned int chan);
/* Test whether the specified channel has an active DMA transfer
*/
-extern int dma_channel_active(dmach_t channel);
+extern int dma_channel_active(unsigned int chan);
/* Set the DMA scatter gather list for this channel
*
@@ -97,7 +95,7 @@ extern int dma_channel_active(dmach_t channel);
* especially since some DMA architectures don't update the
* DMA address immediately, but defer it to the enable_dma().
*/
-extern void set_dma_sg(dmach_t channel, struct scatterlist *sg, int nr_sg);
+extern void set_dma_sg(unsigned int chan, struct scatterlist *sg, int nr_sg);
/* Set the DMA address for this channel
*
@@ -105,9 +103,9 @@ extern void set_dma_sg(dmach_t channel, struct scatterlist *sg, int nr_sg);
* especially since some DMA architectures don't update the
* DMA address immediately, but defer it to the enable_dma().
*/
-extern void __set_dma_addr(dmach_t channel, void *addr);
-#define set_dma_addr(channel, addr) \
- __set_dma_addr(channel, bus_to_virt(addr))
+extern void __set_dma_addr(unsigned int chan, void *addr);
+#define set_dma_addr(chan, addr) \
+ __set_dma_addr(chan, bus_to_virt(addr))
/* Set the DMA byte count for this channel
*
@@ -115,7 +113,7 @@ extern void __set_dma_addr(dmach_t channel, void *addr);
* especially since some DMA architectures don't update the
* DMA count immediately, but defer it to the enable_dma().
*/
-extern void set_dma_count(dmach_t channel, unsigned long count);
+extern void set_dma_count(unsigned int chan, unsigned long count);
/* Set the transfer direction for this channel
*
@@ -124,11 +122,11 @@ extern void set_dma_count(dmach_t channel, unsigned long count);
* DMA transfer direction immediately, but defer it to the
* enable_dma().
*/
-extern void set_dma_mode(dmach_t channel, dmamode_t mode);
+extern void set_dma_mode(unsigned int chan, dmamode_t mode);
/* Set the transfer speed for this channel
*/
-extern void set_dma_speed(dmach_t channel, int cycle_ns);
+extern void set_dma_speed(unsigned int chan, int cycle_ns);
/* Get DMA residue count. After a DMA transfer, this
* should return zero. Reading this while a DMA transfer is
@@ -136,7 +134,7 @@ extern void set_dma_speed(dmach_t channel, int cycle_ns);
* If called before the channel has been used, it may return 1.
* Otherwise, it returns the number of _bytes_ left to transfer.
*/
-extern int get_dma_residue(dmach_t channel);
+extern int get_dma_residue(unsigned int chan);
#ifndef NO_DMA
#define NO_DMA 255
diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h
index fc7278ea714..281ae7e40a9 100644
--- a/arch/arm/include/asm/mach/dma.h
+++ b/arch/arm/include/asm/mach/dma.h
@@ -15,12 +15,12 @@ struct dma_struct;
typedef struct dma_struct dma_t;
struct dma_ops {
- int (*request)(dmach_t, dma_t *); /* optional */
- void (*free)(dmach_t, dma_t *); /* optional */
- void (*enable)(dmach_t, dma_t *); /* mandatory */
- void (*disable)(dmach_t, dma_t *); /* mandatory */
- int (*residue)(dmach_t, dma_t *); /* optional */
- int (*setspeed)(dmach_t, dma_t *, int); /* optional */
+ int (*request)(unsigned int, dma_t *); /* optional */
+ void (*free)(unsigned int, dma_t *); /* optional */
+ void (*enable)(unsigned int, dma_t *); /* mandatory */
+ void (*disable)(unsigned int, dma_t *); /* mandatory */
+ int (*residue)(unsigned int, dma_t *); /* optional */
+ int (*setspeed)(unsigned int, dma_t *, int); /* optional */
char *type;
};
diff --git a/arch/arm/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c
index 4a3a50495c6..29eca48925d 100644
--- a/arch/arm/kernel/dma-isa.c
+++ b/arch/arm/kernel/dma-isa.c
@@ -49,25 +49,25 @@ static unsigned int isa_dma_port[8][7] = {
{ 0xd4, 0xd6, 0xd8, 0x48a, 0x08a, 0xcc, 0xce }
};
-static int isa_get_dma_residue(dmach_t channel, dma_t *dma)
+static int isa_get_dma_residue(unsigned int chan, dma_t *dma)
{
- unsigned int io_port = isa_dma_port[channel][ISA_DMA_COUNT];
+ unsigned int io_port = isa_dma_port[chan][ISA_DMA_COUNT];
int count;
count = 1 + inb(io_port);
count |= inb(io_port) << 8;
- return channel < 4 ? count : (count << 1);
+ return chan < 4 ? count : (count << 1);
}
-static void isa_enable_dma(dmach_t channel, dma_t *dma)
+static void isa_enable_dma(unsigned int chan, dma_t *dma)
{
if (dma->invalid) {
unsigned long address, length;
unsigned int mode;
enum dma_data_direction direction;
- mode = channel & 3;
+ mode = chan & 3;
switch (dma->dma_mode & DMA_MODE_MASK) {
case DMA_MODE_READ:
mode |= ISA_DMA_MODE_READ;
@@ -105,34 +105,34 @@ static void isa_enable_dma(dmach_t channel, dma_t *dma)
address = dma->buf.dma_address;
length = dma->buf.length - 1;
- outb(address >> 16, isa_dma_port[channel][ISA_DMA_PGLO]);
- outb(address >> 24, isa_dma_port[channel][ISA_DMA_PGHI]);
+ outb(address >> 16, isa_dma_port[chan][ISA_DMA_PGLO]);
+ outb(address >> 24, isa_dma_port[chan][ISA_DMA_PGHI]);
- if (channel >= 4) {
+ if (chan >= 4) {
address >>= 1;
length >>= 1;
}
- outb(0, isa_dma_port[channel][ISA_DMA_CLRFF]);
+ outb(0, isa_dma_port[chan][ISA_DMA_CLRFF]);
- outb(address, isa_dma_port[channel][ISA_DMA_ADDR]);
- outb(address >> 8, isa_dma_port[channel][ISA_DMA_ADDR]);
+ outb(address, isa_dma_port[chan][ISA_DMA_ADDR]);
+ outb(address >> 8, isa_dma_port[chan][ISA_DMA_ADDR]);
- outb(length, isa_dma_port[channel][ISA_DMA_COUNT]);
- outb(length >> 8, isa_dma_port[channel][ISA_DMA_COUNT]);
+ outb(length, isa_dma_port[chan][ISA_DMA_COUNT]);
+ outb(length >> 8, isa_dma_port[chan][ISA_DMA_COUNT]);
if (dma->dma_mode & DMA_AUTOINIT)
mode |= ISA_DMA_AUTOINIT;
- outb(mode, isa_dma_port[channel][ISA_DMA_MODE]);
+ outb(mode, isa_dma_port[chan][ISA_DMA_MODE]);
dma->invalid = 0;
}
- outb(channel & 3, isa_dma_port[channel][ISA_DMA_MASK]);
+ outb(chan & 3, isa_dma_port[chan][ISA_DMA_MASK]);
}
-static void isa_disable_dma(dmach_t channel, dma_t *dma)
+static void isa_disable_dma(unsigned int chan, dma_t *dma)
{
- outb(channel | 4, isa_dma_port[channel][ISA_DMA_MASK]);
+ outb(chan | 4, isa_dma_port[chan][ISA_DMA_MASK]);
}
static struct dma_ops isa_dma_ops = {
@@ -178,11 +178,11 @@ void __init isa_init_dma(dma_t *dma)
outb(0xaa, 0x00);
if (inb(0) == 0x55 && inb(0) == 0xaa) {
- int channel, i;
+ int chan, i;
- for (channel = 0; channel < 8; channel++) {
- dma[channel].d_ops = &isa_dma_ops;
- isa_disable_dma(channel, NULL);
+ for (chan = 0; chan < 8; chan++) {
+ dma[chan].d_ops = &isa_dma_ops;
+ isa_disable_dma(chan, NULL);
}
outb(0x40, 0x0b);
diff --git a/arch/arm/kernel/dma.c b/arch/arm/kernel/dma.c
index d006085ed7e..c31bf00e5ba 100644
--- a/arch/arm/kernel/dma.c
+++ b/arch/arm/kernel/dma.c
@@ -30,12 +30,12 @@ static dma_t dma_chan[MAX_DMA_CHANNELS];
*
* On certain platforms, we have to allocate an interrupt as well...
*/
-int request_dma(dmach_t channel, const char *device_id)
+int request_dma(unsigned int chan, const char *device_id)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
int ret;
- if (channel >= MAX_DMA_CHANNELS || !dma->d_ops)
+ if (chan >= MAX_DMA_CHANNELS || !dma->d_ops)
goto bad_dma;
if (xchg(&dma->lock, 1) != 0)
@@ -47,7 +47,7 @@ int request_dma(dmach_t channel, const char *device_id)
ret = 0;
if (dma->d_ops->request)
- ret = dma->d_ops->request(channel, dma);
+ ret = dma->d_ops->request(chan, dma);
if (ret)
xchg(&dma->lock, 0);
@@ -55,7 +55,7 @@ int request_dma(dmach_t channel, const char *device_id)
return ret;
bad_dma:
- printk(KERN_ERR "dma: trying to allocate DMA%d\n", channel);
+ printk(KERN_ERR "dma: trying to allocate DMA%d\n", chan);
return -EINVAL;
busy:
@@ -68,42 +68,42 @@ EXPORT_SYMBOL(request_dma);
*
* On certain platforms, we have to free interrupt as well...
*/
-void free_dma(dmach_t channel)
+void free_dma(unsigned int chan)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
- if (channel >= MAX_DMA_CHANNELS || !dma->d_ops)
+ if (chan >= MAX_DMA_CHANNELS || !dma->d_ops)
goto bad_dma;
if (dma->active) {
- printk(KERN_ERR "dma%d: freeing active DMA\n", channel);
- dma->d_ops->disable(channel, dma);
+ printk(KERN_ERR "dma%d: freeing active DMA\n", chan);
+ dma->d_ops->disable(chan, dma);
dma->active = 0;
}
if (xchg(&dma->lock, 0) != 0) {
if (dma->d_ops->free)
- dma->d_ops->free(channel, dma);
+ dma->d_ops->free(chan, dma);
return;
}
- printk(KERN_ERR "dma%d: trying to free free DMA\n", channel);
+ printk(KERN_ERR "dma%d: trying to free free DMA\n", chan);
return;
bad_dma:
- printk(KERN_ERR "dma: trying to free DMA%d\n", channel);
+ printk(KERN_ERR "dma: trying to free DMA%d\n", chan);
}
EXPORT_SYMBOL(free_dma);
/* Set DMA Scatter-Gather list
*/
-void set_dma_sg (dmach_t channel, struct scatterlist *sg, int nr_sg)
+void set_dma_sg (unsigned int chan, struct scatterlist *sg, int nr_sg)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA SG while "
- "DMA active\n", channel);
+ "DMA active\n", chan);
dma->sg = sg;
dma->sgcount = nr_sg;
@@ -115,13 +115,13 @@ EXPORT_SYMBOL(set_dma_sg);
*
* Copy address to the structure, and set the invalid bit
*/
-void __set_dma_addr (dmach_t channel, void *addr)
+void __set_dma_addr (unsigned int chan, void *addr)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA address while "
- "DMA active\n", channel);
+ "DMA active\n", chan);
dma->sg = NULL;
dma->addr = addr;
@@ -133,13 +133,13 @@ EXPORT_SYMBOL(__set_dma_addr);
*
* Copy address to the structure, and set the invalid bit
*/
-void set_dma_count (dmach_t channel, unsigned long count)
+void set_dma_count (unsigned int chan, unsigned long count)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA count while "
- "DMA active\n", channel);
+ "DMA active\n", chan);
dma->sg = NULL;
dma->count = count;
@@ -149,13 +149,13 @@ EXPORT_SYMBOL(set_dma_count);
/* Set DMA direction mode
*/
-void set_dma_mode (dmach_t channel, dmamode_t mode)
+void set_dma_mode (unsigned int chan, dmamode_t mode)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
if (dma->active)
printk(KERN_ERR "dma%d: altering DMA mode while "
- "DMA active\n", channel);
+ "DMA active\n", chan);
dma->dma_mode = mode;
dma->invalid = 1;
@@ -164,42 +164,42 @@ EXPORT_SYMBOL(set_dma_mode);
/* Enable DMA channel
*/
-void enable_dma (dmach_t channel)
+void enable_dma (unsigned int chan)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
if (!dma->lock)
goto free_dma;
if (dma->active == 0) {
dma->active = 1;
- dma->d_ops->enable(channel, dma);
+ dma->d_ops->enable(chan, dma);
}
return;
free_dma:
- printk(KERN_ERR "dma%d: trying to enable free DMA\n", channel);
+ printk(KERN_ERR "dma%d: trying to enable free DMA\n", chan);
BUG();
}
EXPORT_SYMBOL(enable_dma);
/* Disable DMA channel
*/
-void disable_dma (dmach_t channel)
+void disable_dma (unsigned int chan)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
if (!dma->lock)
goto free_dma;
if (dma->active == 1) {
dma->active = 0;
- dma->d_ops->disable(channel, dma);
+ dma->d_ops->disable(chan, dma);
}
return;
free_dma:
- printk(KERN_ERR "dma%d: trying to disable free DMA\n", channel);
+ printk(KERN_ERR "dma%d: trying to disable free DMA\n", chan);
BUG();
}
EXPORT_SYMBOL(disable_dma);
@@ -207,36 +207,36 @@ EXPORT_SYMBOL(disable_dma);
/*
* Is the specified DMA channel active?
*/
-int dma_channel_active(dmach_t channel)
+int dma_channel_active(unsigned int chan)
{
- return dma_chan[channel].active;
+ return dma_chan[chan].active;
}
EXPORT_SYMBOL(dma_channel_active);
-void set_dma_page(dmach_t channel, char pagenr)
+void set_dma_page(unsigned int chan, char pagenr)
{
- printk(KERN_ERR "dma%d: trying to set_dma_page\n", channel);
+ printk(KERN_ERR "dma%d: trying to set_dma_page\n", chan);
}
EXPORT_SYMBOL(set_dma_page);
-void set_dma_speed(dmach_t channel, int cycle_ns)
+void set_dma_speed(unsigned int chan, int cycle_ns)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
int ret = 0;
if (dma->d_ops->setspeed)
- ret = dma->d_ops->setspeed(channel, dma, cycle_ns);
+ ret = dma->d_ops->setspeed(chan, dma, cycle_ns);
dma->speed = ret;
}
EXPORT_SYMBOL(set_dma_speed);
-int get_dma_residue(dmach_t channel)
+int get_dma_residue(unsigned int chan)
{
- dma_t *dma = dma_chan + channel;
+ dma_t *dma = dma_chan + chan;
int ret = 0;
if (dma->d_ops->residue)
- ret = dma->d_ops->residue(channel, dma);
+ ret = dma->d_ops->residue(chan, dma);
return ret;
}
diff --git a/arch/arm/mach-footbridge/dma.c b/arch/arm/mach-footbridge/dma.c
index b653e9cfa3f..e7b8a6adaf7 100644
--- a/arch/arm/mach-footbridge/dma.c
+++ b/arch/arm/mach-footbridge/dma.c
@@ -20,16 +20,16 @@
#include <asm/hardware/dec21285.h>
#if 0
-static int fb_dma_request(dmach_t channel, dma_t *dma)
+static int fb_dma_request(unsigned int chan, dma_t *dma)
{
return -EINVAL;
}
-static void fb_dma_enable(dmach_t channel, dma_t *dma)
+static void fb_dma_enable(unsigned int chan, dma_t *dma)
{
}
-static void fb_dma_disable(dmach_t channel, dma_t *dma)
+static void fb_dma_disable(unsigned int chan, dma_t *dma)
{
}
diff --git a/arch/arm/mach-rpc/dma.c b/arch/arm/mach-rpc/dma.c
index 7958a30f893..a86d3ed859a 100644
--- a/arch/arm/mach-rpc/dma.c
+++ b/arch/arm/mach-rpc/dma.c
@@ -125,18 +125,18 @@ static irqreturn_t iomd_dma_handle(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int iomd_request_dma(dmach_t channel, dma_t *dma)
+static int iomd_request_dma(unsigned int chan, dma_t *dma)
{
return request_irq(dma->dma_irq, iomd_dma_handle,
IRQF_DISABLED, dma->device_id, dma);
}
-static void iomd_free_dma(dmach_t channel, dma_t *dma)
+static void iomd_free_dma(unsigned int chan, dma_t *dma)
{
free_irq(dma->dma_irq, dma);
}
-static void iomd_enable_dma(dmach_t channel, dma_t *dma)
+static void iomd_enable_dma(unsigned int chan, dma_t *dma)
{
unsigned long dma_base = dma->dma_base;
unsigned int ctrl = TRANSFER_SIZE | DMA_CR_E;
@@ -169,7 +169,7 @@ static void iomd_enable_dma(dmach_t channel, dma_t *dma)
enable_irq(dma->dma_irq);
}
-static void iomd_disable_dma(dmach_t channel, dma_t *dma)
+static void iomd_disable_dma(unsigned int chan, dma_t *dma)
{
unsigned long dma_base = dma->dma_base;
unsigned long flags;
@@ -181,7 +181,7 @@ static void iomd_disable_dma(dmach_t channel, dma_t *dma)
local_irq_restore(flags);
}
-static int iomd_set_dma_speed(dmach_t channel, dma_t *dma, int cycle)
+static int iomd_set_dma_speed(unsigned int chan, dma_t *dma, int cycle)
{
int tcr, speed;
@@ -197,7 +197,7 @@ static int iomd_set_dma_speed(dmach_t channel, dma_t *dma, int cycle)
tcr = iomd_readb(IOMD_DMATCR);
speed &= 3;
- switch (channel) {
+ switch (chan) {
case DMA_0:
tcr = (tcr & ~0x03) | speed;
break;
@@ -236,7 +236,7 @@ static struct fiq_handler fh = {
.name = "floppydma"
};
-static void floppy_enable_dma(dmach_t channel, dma_t *dma)
+static void floppy_enable_dma(unsigned int chan, dma_t *dma)
{
void *fiqhandler_start;
unsigned int fiqhandler_length;
@@ -269,13 +269,13 @@ static void floppy_enable_dma(dmach_t channel, dma_t *dma)
enable_fiq(dma->dma_irq);
}
-static void floppy_disable_dma(dmach_t channel, dma_t *dma)
+static void floppy_disable_dma(unsigned int chan, dma_t *dma)
{
disable_fiq(dma->dma_irq);
release_fiq(&fh);
}
-static int floppy_get_residue(dmach_t channel, dma_t *dma)
+static int floppy_get_residue(unsigned int chan, dma_t *dma)
{
struct pt_regs regs;
get_fiq_regs(&regs);
@@ -292,7 +292,7 @@ static struct dma_ops floppy_dma_ops = {
/*
* This is virtual DMA - we don't need anything here.
*/
-static void sound_enable_disable_dma(dmach_t channel, dma_t *dma)
+static void sound_enable_disable_dma(unsigned int chan, dma_t *dma)
{
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 11:48:14 +0000