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[ARM] dma: remove dmach_t typedef 

Remove a pointless integer typedef.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2008-12-08 15:58:50 +00:00 committed by Russell King
parent f40b121d98
commit 1df8130278
6 changed files with 98 additions and 100 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
arch/arm/include/asm/dma.h
View File

@ -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

12
arch/arm/include/asm/mach/dma.h
View File

@ -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;
};

42
arch/arm/kernel/dma-isa.c
View File

@ -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);

86
arch/arm/kernel/dma.c
View File

@ -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;
}

6
arch/arm/mach-footbridge/dma.c
View File

@ -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)
{
}

20
arch/arm/mach-rpc/dma.c
View File

@ -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)
{
}