/* Prototype: fasdmatype_t eesoxscsi_dma_setup(host, SCpnt, direction, min_type)
* Purpose : initialises DMA/PIO
* Params : host - host
* SCpnt - command
* direction - DMA on to/off of card
* min_type - minimum DMA support that we must have for this transfer
* Returns : type of transfer to be performed
*/
static fasdmatype_t
eesoxscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
fasdmadir_t direction, fasdmatype_t min_type)
{
struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
int dmach = host->dma_channel;
if (dmach != NO_DMA &&
(min_type == fasdma_real_all || SCp->this_residual >= 512)) {
int bufs, map_dir, dma_dir;
bufs = copy_SCp_to_sg(&info->sg[0], SCp, NR_SG);
if (direction == DMA_OUT)
map_dir = PCI_DMA_TODEVICE,
dma_dir = DMA_MODE_WRITE;
else
map_dir = PCI_DMA_FROMDEVICE,
dma_dir = DMA_MODE_READ;
pci_map_sg(NULL, info->sg, bufs, map_dir);
disable_dma(dmach);
set_dma_sg(dmach, info->sg, bufs);
set_dma_mode(dmach, dma_dir);
enable_dma(dmach);
return fasdma_real_all;
}
/*
* We don't do DMA, we only do slow PIO
*
* Some day, we will do Pseudo DMA
*/
return fasdma_pseudo;
}
/* Prototype: fasdmatype_t powertecscsi_dma_setup(host, SCpnt, direction, min_type)
* Purpose : initialises DMA/PIO
* Params : host - host
* SCpnt - command
* direction - DMA on to/off of card
* min_type - minimum DMA support that we must have for this transfer
* Returns : type of transfer to be performed
*/
static fasdmatype_t
powertecscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
fasdmadir_t direction, fasdmatype_t min_type)
{
struct powertec_info *info = (struct powertec_info *)host->hostdata;
int dmach = host->dma_channel;
if (info->info.ifcfg.capabilities & FASCAP_DMA &&
min_type == fasdma_real_all) {
int bufs, map_dir, dma_dir;
bufs = copy_SCp_to_sg(&info->sg[0], SCp, NR_SG);
if (direction == DMA_OUT)
map_dir = PCI_DMA_TODEVICE,
dma_dir = DMA_MODE_WRITE;
else
map_dir = PCI_DMA_FROMDEVICE,
dma_dir = DMA_MODE_READ;
pci_map_sg(NULL, info->sg, bufs, map_dir);
disable_dma(dmach);
set_dma_sg(dmach, info->sg, bufs);
set_dma_mode(dmach, dma_dir);
enable_dma(dmach);
return fasdma_real_all;
}
/*
* If we're not doing DMA,
* we'll do slow PIO
*/
return fasdma_pio;
}
/* Prototype: fasdmatype_t cumanascsi_2_dma_setup(host, SCpnt, direction, min_type)
* Purpose : initialises DMA/PIO
* Params : host - host
* SCpnt - command
* direction - DMA on to/off of card
* min_type - minimum DMA support that we must have for this transfer
* Returns : type of transfer to be performed
*/
static fasdmatype_t
cumanascsi_2_dma_setup(struct Scsi_Host *host, struct scsi_pointer *SCp,
fasdmadir_t direction, fasdmatype_t min_type)
{
struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
struct device *dev = scsi_get_device(host);
int dmach = info->info.scsi.dma;
writeb(ALATCH_DIS_DMA, info->base + CUMANASCSI2_ALATCH);
if (dmach != NO_DMA &&
(min_type == fasdma_real_all || SCp->this_residual >= 512)) {
int bufs, map_dir, dma_dir, alatch_dir;
bufs = copy_SCp_to_sg(&info->sg[0], SCp, NR_SG);
if (direction == DMA_OUT)
map_dir = DMA_TO_DEVICE,
dma_dir = DMA_MODE_WRITE,
alatch_dir = ALATCH_DMA_OUT;
else
map_dir = DMA_FROM_DEVICE,
dma_dir = DMA_MODE_READ,
alatch_dir = ALATCH_DMA_IN;
dma_map_sg(dev, info->sg, bufs + 1, map_dir);
disable_dma(dmach);
set_dma_sg(dmach, info->sg, bufs + 1);
writeb(alatch_dir, info->base + CUMANASCSI2_ALATCH);
set_dma_mode(dmach, dma_dir);
enable_dma(dmach);
writeb(ALATCH_ENA_DMA, info->base + CUMANASCSI2_ALATCH);
writeb(ALATCH_DIS_BIT32, info->base + CUMANASCSI2_ALATCH);
return fasdma_real_all;
}
/*
* If we're not doing DMA,
* we'll do pseudo DMA
*/
return fasdma_pio;
}
/* Prototype: fasdmatype_t powertecscsi_dma_setup(host, SCpnt, direction, min_type)
* Purpose : initialises DMA/PIO
* Params : host - host
* SCpnt - command
* direction - DMA on to/off of card
* min_type - minimum DMA support that we must have for this transfer
* Returns : type of transfer to be performed
*/
static fasdmatype_t
powertecscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
fasdmadir_t direction, fasdmatype_t min_type)
{
PowerTecScsi_Info *info = (PowerTecScsi_Info *)host->hostdata;
int dmach = host->dma_channel;
if (dmach != NO_DMA &&
(min_type == fasdma_real_all || SCp->this_residual >= 512)) {
int buf;
for (buf = 1; buf <= SCp->buffers_residual &&
buf < NR_SG; buf++) {
info->dmasg[buf].address = __virt_to_bus(
(unsigned long)SCp->buffer[buf].address);
info->dmasg[buf].length = SCp->buffer[buf].length;
powertecscsi_invalidate(SCp->buffer[buf].address,
SCp->buffer[buf].length,
direction);
}
info->dmasg[0].address = __virt_to_phys((unsigned long)SCp->ptr);
info->dmasg[0].length = SCp->this_residual;
powertecscsi_invalidate(SCp->ptr,
SCp->this_residual, direction);
disable_dma(dmach);
set_dma_sg(dmach, info->dmasg, buf);
set_dma_mode(dmach,
direction == DMA_OUT ? DMA_MODE_WRITE :
DMA_MODE_READ);
enable_dma(dmach);
return fasdma_real_all;
}
/*
* If we're not doing DMA,
* we'll do slow PIO
*/
return fasdma_pio;
}
/* Prototype: fasdmatype_t eesoxscsi_dma_setup(host, SCpnt, direction, min_type)
* Purpose : initialises DMA/PIO
* Params : host - host
* SCpnt - command
* direction - DMA on to/off of card
* min_type - minimum DMA support that we must have for this transfer
* Returns : type of transfer to be performed
*/
static fasdmatype_t
eesoxscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
fasdmadir_t direction, fasdmatype_t min_type)
{
EESOXScsi_Info *info = (EESOXScsi_Info *)host->hostdata;
int dmach = host->dma_channel;
if (dmach != NO_DMA &&
(min_type == fasdma_real_all || SCp->this_residual >= 512)) {
int buf;
for(buf = 1; buf <= SCp->buffers_residual &&
buf < NR_SG; buf++) {
info->dmasg[buf].address = __virt_to_bus(
(unsigned long)SCp->buffer[buf].address);
info->dmasg[buf].length = SCp->buffer[buf].length;
eesoxscsi_invalidate(SCp->buffer[buf].address,
SCp->buffer[buf].length,
direction);
}
info->dmasg[0].address = __virt_to_phys((unsigned long)SCp->ptr);
info->dmasg[0].length = SCp->this_residual;
eesoxscsi_invalidate(SCp->ptr,
SCp->this_residual, direction);
disable_dma(dmach);
set_dma_sg(dmach, info->dmasg, buf);
set_dma_mode(dmach,
direction == DMA_OUT ? DMA_MODE_WRITE :
DMA_MODE_READ);
enable_dma(dmach);
return fasdma_real_all;
}
/*
* We don't do DMA, we only do slow PIO
*
* Some day, we will do Pseudo DMA
*/
return fasdma_pseudo;
}
/* Prototype: fasdmatype_t cumanascsi_2_dma_setup(host, SCpnt, direction, min_type)
* Purpose : initialises DMA/PIO
* Params : host - host
* SCpnt - command
* direction - DMA on to/off of card
* min_type - minimum DMA support that we must have for this transfer
* Returns : type of transfer to be performed
*/
static fasdmatype_t
cumanascsi_2_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
fasdmadir_t direction, fasdmatype_t min_type)
{
struct cumanascsi2_info *info = (struct cumanascsi2_info *)host->hostdata;
int dmach = host->dma_channel;
outb(ALATCH_DIS_DMA, info->alatch);
if (dmach != NO_DMA &&
(min_type == fasdma_real_all || SCp->this_residual >= 512)) {
int bufs, map_dir, dma_dir, alatch_dir;
bufs = copy_SCp_to_sg(&info->sg[0], SCp, NR_SG);
if (direction == DMA_OUT)
map_dir = PCI_DMA_TODEVICE,
dma_dir = DMA_MODE_WRITE,
alatch_dir = ALATCH_DMA_OUT;
else
map_dir = PCI_DMA_FROMDEVICE,
dma_dir = DMA_MODE_READ,
alatch_dir = ALATCH_DMA_IN;
pci_map_sg(NULL, info->sg, bufs, map_dir);
disable_dma(dmach);
set_dma_sg(dmach, info->sg, bufs);
outb(alatch_dir, info->alatch);
set_dma_mode(dmach, dma_dir);
enable_dma(dmach);
outb(ALATCH_ENA_DMA, info->alatch);
outb(ALATCH_DIS_BIT32, info->alatch);
return fasdma_real_all;
}
/*
* If we're not doing DMA,
* we'll do pseudo DMA
*/
return fasdma_pio;
}
/* Prototype: fasdmatype_t eesoxscsi_dma_setup(host, SCpnt, direction, min_type)
* Purpose : initialises DMA/PIO
* Params : host - host
* SCpnt - command
* direction - DMA on to/off of card
* min_type - minimum DMA support that we must have for this transfer
* Returns : type of transfer to be performed
*/
static fasdmatype_t
eesoxscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
fasdmadir_t direction, fasdmatype_t min_type)
{
EESOXScsi_Info *info = (EESOXScsi_Info *)host->hostdata;
int dmach = host->dma_channel;
if (dmach != NO_DMA &&
(min_type == fasdma_real_all || SCp->this_residual >= 512)) {
int bufs = SCp->buffers_residual;
int pci_dir, dma_dir;
if (bufs)
memcpy(info->sg + 1, SCp->buffer + 1,
sizeof(struct scatterlist) * bufs);
info->sg[0].address = SCp->ptr;
info->sg[0].page = NULL;
info->sg[0].length = SCp->this_residual;
if (direction == DMA_OUT)
pci_dir = PCI_DMA_TODEVICE,
dma_dir = DMA_MODE_WRITE;
else
pci_dir = PCI_DMA_FROMDEVICE,
dma_dir = DMA_MODE_READ;
pci_map_sg(NULL, info->sg, bufs + 1, pci_dir);
disable_dma(dmach);
set_dma_sg(dmach, info->sg, bufs + 1);
set_dma_mode(dmach, dma_dir);
enable_dma(dmach);
return fasdma_real_all;
}
/*
* We don't do DMA, we only do slow PIO
*
* Some day, we will do Pseudo DMA
*/
return fasdma_pseudo;
}
