#include <linux/types.h>
#include <linux/mm.h>
#include <linux/blk.h>
#include <linux/version.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/bootinfo.h>
#include <asm/amigaints.h>
#include <asm/amigahw.h>
#include <asm/zorro.h>
#include <asm/irq.h>
#include "scsi.h"
#include "hosts.h"
#include "wd33c93.h"
#include "gvp11.h"
#include<linux/stat.h>
struct proc_dir_entry proc_scsi_gvp11 = {
PROC_SCSI_GVP11, 5, "GVP11",
S_IFDIR | S_IRUGO | S_IXUGO, 2
};
#define DMA(ptr) ((gvp11_scsiregs *)((ptr)->base))
#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
static struct Scsi_Host *first_instance = NULL;
static Scsi_Host_Template *gvp11_template;
static void gvp11_intr (int irq, struct pt_regs *fp, void *dummy)
{
unsigned int status;
struct Scsi_Host *instance;
for (instance = first_instance; instance &&
instance->hostt == gvp11_template; instance = instance->next)
{
status = DMA(instance)->CNTR;
if (!(status & GVP11_DMAC_INT_PENDING))
continue;
/* disable PORTS interrupt */
custom.intena = IF_PORTS;
wd33c93_intr (instance);
/* enable PORTS interrupt */
custom.intena = IF_SETCLR | IF_PORTS;
}
}
/*
* DMA transfer mask for GVP Series II SCSI controller.
* Some versions can only DMA into the 24 bit address space
* (0->16M). Others can DMA into the full 32 bit address
* space. The default is to only allow DMA into the 24 bit
* address space. The "gvp11=0xFFFFFFFE" setup parameter can
* be supplied to force an alternate (32 bit) mask.
*/
static int gvp11_xfer_mask = GVP11_XFER_MASK;
void gvp11_setup (char *str, int *ints)
{
gvp11_xfer_mask = ints[1];
}
static int dma_setup (Scsi_Cmnd *cmd, int dir_in)
{
unsigned short cntr = GVP11_DMAC_INT_ENABLE;
unsigned long addr = VTOP(cmd->SCp.ptr);
/* don't allow DMA if the physical address is bad */
if (addr & gvp11_xfer_mask ||
(!dir_in && mm_end_of_chunk (addr, cmd->SCp.this_residual)))
{
HDATA(cmd->host)->dma_bounce_len = (cmd->SCp.this_residual + 511)
& ~0x1ff;
HDATA(cmd->host)->dma_bounce_buffer =
scsi_malloc (HDATA(cmd->host)->dma_bounce_len);
/* can't allocate memory; use PIO */
if (!HDATA(cmd->host)->dma_bounce_buffer) {
HDATA(cmd->host)->dma_bounce_len = 0;
return 1;
}
/* check if the address of the bounce buffer is OK */
addr = VTOP(HDATA(cmd->host)->dma_bounce_buffer);
if (addr & gvp11_xfer_mask) {
scsi_free (HDATA(cmd->host)->dma_bounce_buffer,
HDATA(cmd->host)->dma_bounce_len);
HDATA(cmd->host)->dma_bounce_buffer = NULL;
HDATA(cmd->host)->dma_bounce_len = 0;
return 1;
}
if (!dir_in) {
/* copy to bounce buffer for a write */
if (cmd->use_sg)
#if 0
panic ("scsi%ddma: incomplete s/g support",
cmd->host->host_no);
#else
memcpy (HDATA(cmd->host)->dma_bounce_buffer,
cmd->SCp.ptr, cmd->SCp.this_residual);
#endif
else
memcpy (HDATA(cmd->host)->dma_bounce_buffer,
cmd->request_buffer, cmd->request_bufflen);
}
}
/* setup dma direction */
if (!dir_in)
cntr |= GVP11_DMAC_DIR_WRITE;
HDATA(cmd->host)->dma_dir = dir_in;
DMA(cmd->host)->CNTR = cntr;
/* setup DMA *physical* address */
DMA(cmd->host)->ACR = addr;
if (dir_in)
/* invalidate any cache */
cache_clear (addr, cmd->SCp.this_residual);
else
/* push any dirty cache */
cache_push (addr, cmd->SCp.this_residual);
/* start DMA */
DMA(cmd->host)->ST_DMA = 1;
/* return success */
return 0;
}
static void dma_stop (struct Scsi_Host *instance, Scsi_Cmnd *SCpnt,
int status)
{
/* stop DMA */
DMA(instance)->SP_DMA = 1;
/* remove write bit from CONTROL bits */
DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
/* copy from a bounce buffer, if necessary */
if (status && HDATA(instance)->dma_bounce_buffer) {
if (SCpnt && SCpnt->use_sg) {
#if 0
panic ("scsi%d: incomplete s/g support",
instance->host_no);
#else
if( HDATA(instance)->dma_dir )
memcpy (SCpnt->SCp.ptr,
HDATA(instance)->dma_bounce_buffer,
SCpnt->SCp.this_residual);
scsi_free (HDATA(instance)->dma_bounce_buffer,
HDATA(instance)->dma_bounce_len);
HDATA(instance)->dma_bounce_buffer = NULL;
HDATA(instance)->dma_bounce_len = 0;
#endif
} else {
if (HDATA(instance)->dma_dir && SCpnt)
memcpy (SCpnt->request_buffer,
HDATA(instance)->dma_bounce_buffer,
SCpnt->request_bufflen);
scsi_free (HDATA(instance)->dma_bounce_buffer,
HDATA(instance)->dma_bounce_len);
HDATA(instance)->dma_bounce_buffer = NULL;
HDATA(instance)->dma_bounce_len = 0;
}
}
}
int gvp11_detect(Scsi_Host_Template *tpnt)
{
static unsigned char called = 0;
struct Scsi_Host *instance;
int i, manuf, product, num_gvp11 = 0;
caddr_t address;
enum GVP_ident epc;
if (!MACH_IS_AMIGA || called)
return 0;
called = 1;
tpnt->proc_dir = &proc_scsi_gvp11;
for (i = 0; i < boot_info.bi_amiga.num_autocon; i++)
{
manuf = boot_info.bi_amiga.autocon[i].cd_Rom.er_Manufacturer;
product = boot_info.bi_amiga.autocon[i].cd_Rom.er_Product;
#if 0
/* this seems to catch some non HD boards. GVP is sooooo stupid */
if (manuf == MANUF_GVP &&
((product == PROD_GVPIISCSI) || (product == PROD_GVPIISCSI_2))) {
#else
if (manuf == MANUF_GVP && product == PROD_GVPIISCSI) {
#endif
/* check extended product code */
address = boot_info.bi_amiga.autocon[i].cd_BoardAddr;
epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000);
epc = epc & GVP_EPCMASK;
/*
* This should (hopefully) be the correct way to identify
* all the different GVP SCSI controllers (except for the
* SERIES I though).
*/
if (!((epc == GVP_A1291_SCSI) ||
(epc == GVP_GFORCE_040_SCSI) ||
(epc == GVP_GFORCE_030_SCSI) ||
(epc == GVP_A530_SCSI) ||
(epc == GVP_COMBO_R4_SCSI) ||
(epc == GVP_COMBO_R3_SCSI) ||
(epc == GVP_SERIESII)))
continue;
instance = scsi_register (tpnt,
sizeof (struct WD33C93_hostdata));
instance->base = (unsigned char *)ZTWO_VADDR(address);
DMA(instance)->secret2 = 1;
DMA(instance)->secret1 = 0;
DMA(instance)->secret3 = 15;
while (DMA(instance)->CNTR & GVP11_DMAC_BUSY) ;
DMA(instance)->CNTR = 0;
wd33c93_init(instance, (wd33c93_regs *)&(DMA(instance)->SASR),
dma_setup, dma_stop, WD33C93_FS_8_10);
if (num_gvp11++ == 0) {
first_instance = instance;
gvp11_template = instance->hostt;
add_isr(IRQ_AMIGA_PORTS, gvp11_intr, 0, NULL, "GVP11 SCSI");
}
DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
#if 0 /* The Zorro stuff is not totally integrated yet ! */
boot_info.bi_amiga.autocon_configured |= 1<<i;
#endif
}
}
return num_gvp11;
}
