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atp870u.c
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/*
* Copyright (C) 1997 Wu Ching Chen
* 2.1.x update (C) 1998 Krzysztof G. Baranowski
* 2.5.x update (C) 2002 Red Hat <alan@redhat.com>
* 2.6.x update (C) 2004 Red Hat <alan@redhat.com>
*
* Marcelo Tosatti <marcelo@conectiva.com.br> : SMP fixes
*
* Wu Ching Chen : NULL pointer fixes 2000/06/02
* support atp876 chip
* enable 32 bit fifo transfer
* support cdrom & remove device run ultra speed
* fix disconnect bug 2000/12/21
* support atp880 chip lvd u160 2001/05/15
* fix prd table bug 2001/09/12 (7.1)
*
* atp885 support add by ACARD Hao Ping Lian 2005/01/05
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
#include <linux/blkdev.h>
#include <linux/dma-mapping.h>
#include <asm/system.h>
#include <asm/io.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include "atp870u.h"
static struct scsi_host_template atp870u_template;
static void send_s870(struct atp_unit *dev,unsigned char c);
static void is885(struct atp_unit *dev, unsigned int wkport,unsigned char c);
static void tscam_885(void);
static irqreturn_t atp870u_intr_handle(int irq, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
unsigned short int tmpcip, id;
unsigned char i, j, c, target_id, lun,cmdp;
unsigned char *prd;
struct scsi_cmnd *workreq;
unsigned int workport, tmport, tmport1;
unsigned long adrcnt, k;
#ifdef ED_DBGP
unsigned long l;
#endif
int errstus;
struct Scsi_Host *host = dev_id;
struct atp_unit *dev = (struct atp_unit *)&host->hostdata;
for (c = 0; c < 2; c++) {
tmport = dev->ioport[c] + 0x1f;
j = inb(tmport);
if ((j & 0x80) != 0)
{
goto ch_sel;
}
dev->in_int[c] = 0;
}
return IRQ_NONE;
ch_sel:
#ifdef ED_DBGP
printk("atp870u_intr_handle enter\n");
#endif
dev->in_int[c] = 1;
cmdp = inb(dev->ioport[c] + 0x10);
workport = dev->ioport[c];
if (dev->working[c] != 0) {
if (dev->dev_id == ATP885_DEVID) {
tmport1 = workport + 0x16;
if ((inb(tmport1) & 0x80) == 0)
outb((inb(tmport1) | 0x80), tmport1);
}
tmpcip = dev->pciport[c];
if ((inb(tmpcip) & 0x08) != 0)
{
tmpcip += 0x2;
for (k=0; k < 1000; k++) {
if ((inb(tmpcip) & 0x08) == 0) {
goto stop_dma;
}
if ((inb(tmpcip) & 0x01) == 0) {
goto stop_dma;
}
}
}
stop_dma:
tmpcip = dev->pciport[c];
outb(0x00, tmpcip);
tmport -= 0x08;
i = inb(tmport);
if (dev->dev_id == ATP885_DEVID) {
tmpcip += 2;
outb(0x06, tmpcip);
tmpcip -= 2;
}
tmport -= 0x02;
target_id = inb(tmport);
tmport += 0x02;
/*
* Remap wide devices onto id numbers
*/
if ((target_id & 0x40) != 0) {
target_id = (target_id & 0x07) | 0x08;
} else {
target_id &= 0x07;
}
if ((j & 0x40) != 0) {
if (dev->last_cmd[c] == 0xff) {
dev->last_cmd[c] = target_id;
}
dev->last_cmd[c] |= 0x40;
}
if (dev->dev_id == ATP885_DEVID)
dev->r1f[c][target_id] |= j;
#ifdef ED_DBGP
printk("atp870u_intr_handle status = %x\n",i);
#endif
if (i == 0x85) {
if ((dev->last_cmd[c] & 0xf0) != 0x40) {
dev->last_cmd[c] = 0xff;
}
if (dev->dev_id == ATP885_DEVID) {
tmport -= 0x05;
adrcnt = 0;
((unsigned char *) &adrcnt)[2] = inb(tmport++);
((unsigned char *) &adrcnt)[1] = inb(tmport++);
((unsigned char *) &adrcnt)[0] = inb(tmport);
if (dev->id[c][target_id].last_len != adrcnt)
{
k = dev->id[c][target_id].last_len;
k -= adrcnt;
dev->id[c][target_id].tran_len = k;
dev->id[c][target_id].last_len = adrcnt;
}
#ifdef ED_DBGP
printk("tmport = %x dev->id[c][target_id].last_len = %d dev->id[c][target_id].tran_len = %d\n",tmport,dev->id[c][target_id].last_len,dev->id[c][target_id].tran_len);
#endif
}
/*
* Flip wide
*/
if (dev->wide_id[c] != 0) {
tmport = workport + 0x1b;
outb(0x01, tmport);
while ((inb(tmport) & 0x01) != 0x01) {
outb(0x01, tmport);
}
}
/*
* Issue more commands
*/
spin_lock_irqsave(dev->host->host_lock, flags);
if (((dev->quhd[c] != dev->quend[c]) || (dev->last_cmd[c] != 0xff)) &&
(dev->in_snd[c] == 0)) {
#ifdef ED_DBGP
printk("Call sent_s870\n");
#endif
send_s870(dev,c);
}
spin_unlock_irqrestore(dev->host->host_lock, flags);
/*
* Done
*/
dev->in_int[c] = 0;
#ifdef ED_DBGP
printk("Status 0x85 return\n");
#endif
goto handled;
}
if (i == 0x40) {
dev->last_cmd[c] |= 0x40;
dev->in_int[c] = 0;
goto handled;
}
if (i == 0x21) {
if ((dev->last_cmd[c] & 0xf0) != 0x40) {
dev->last_cmd[c] = 0xff;
}
tmport -= 0x05;
adrcnt = 0;
((unsigned char *) &adrcnt)[2] = inb(tmport++);
((unsigned char *) &adrcnt)[1] = inb(tmport++);
((unsigned char *) &adrcnt)[0] = inb(tmport);
k = dev->id[c][target_id].last_len;
k -= adrcnt;
dev->id[c][target_id].tran_len = k;
dev->id[c][target_id].last_len = adrcnt;
tmport -= 0x04;
outb(0x41, tmport);
tmport += 0x08;
outb(0x08, tmport);
dev->in_int[c] = 0;
goto handled;
}
if (dev->dev_id == ATP885_DEVID) {
if ((i == 0x4c) || (i == 0x4d) || (i == 0x8c) || (i == 0x8d)) {
if ((i == 0x4c) || (i == 0x8c))
i=0x48;
else
i=0x49;
}
}
if ((i == 0x80) || (i == 0x8f)) {
#ifdef ED_DBGP
printk(KERN_DEBUG "Device reselect\n");
#endif
lun = 0;
tmport -= 0x07;
if (cmdp == 0x44 || i==0x80) {
tmport += 0x0d;
lun = inb(tmport) & 0x07;
} else {
if ((dev->last_cmd[c] & 0xf0) != 0x40) {
dev->last_cmd[c] = 0xff;
}
if (cmdp == 0x41) {
#ifdef ED_DBGP
printk("cmdp = 0x41\n");
#endif
tmport += 0x02;
adrcnt = 0;
((unsigned char *) &adrcnt)[2] = inb(tmport++);
((unsigned char *) &adrcnt)[1] = inb(tmport++);
((unsigned char *) &adrcnt)[0] = inb(tmport);
k = dev->id[c][target_id].last_len;
k -= adrcnt;
dev->id[c][target_id].tran_len = k;
dev->id[c][target_id].last_len = adrcnt;
tmport += 0x04;
outb(0x08, tmport);
dev->in_int[c] = 0;
goto handled;
} else {
#ifdef ED_DBGP
printk("cmdp != 0x41\n");
#endif
outb(0x46, tmport);
dev->id[c][target_id].dirct = 0x00;
tmport += 0x02;
outb(0x00, tmport++);
outb(0x00, tmport++);
outb(0x00, tmport++);
tmport += 0x03;
outb(0x08, tmport);
dev->in_int[c] = 0;
goto handled;
}
}
if (dev->last_cmd[c] != 0xff) {
dev->last_cmd[c] |= 0x40;
}
if (dev->dev_id == ATP885_DEVID) {
j = inb(dev->baseport + 0x29) & 0xfe;
outb(j, dev->baseport + 0x29);
tmport = workport + 0x16;
} else {
tmport = workport + 0x10;
outb(0x45, tmport);
tmport += 0x06;
}
target_id = inb(tmport);
/*
* Remap wide identifiers
*/
if ((target_id & 0x10) != 0) {
target_id = (target_id & 0x07) | 0x08;
} else {
target_id &= 0x07;
}
if (dev->dev_id == ATP885_DEVID) {
tmport = workport + 0x10;
outb(0x45, tmport);
}
workreq = dev->id[c][target_id].curr_req;
#ifdef ED_DBGP
scmd_printk(KERN_DEBUG, workreq, "CDB");
for (l = 0; l < workreq->cmd_len; l++)
printk(KERN_DEBUG " %x",workreq->cmnd[l]);
printk("\n");
#endif
tmport = workport + 0x0f;
outb(lun, tmport);
tmport += 0x02;
outb(dev->id[c][target_id].devsp, tmport++);
adrcnt = dev->id[c][target_id].tran_len;
k = dev->id[c][target_id].last_len;
outb(((unsigned char *) &k)[2], tmport++);
outb(((unsigned char *) &k)[1], tmport++);
outb(((unsigned char *) &k)[0], tmport++);
#ifdef ED_DBGP
printk("k %x, k[0] 0x%x k[1] 0x%x k[2] 0x%x\n", k, inb(tmport-1), inb(tmport-2), inb(tmport-3));
#endif
/* Remap wide */
j = target_id;
if (target_id > 7) {
j = (j & 0x07) | 0x40;
}
/* Add direction */
j |= dev->id[c][target_id].dirct;
outb(j, tmport++);
outb(0x80,tmport);
/* enable 32 bit fifo transfer */
if (dev->dev_id == ATP885_DEVID) {
tmpcip = dev->pciport[c] + 1;
i=inb(tmpcip) & 0xf3;
//j=workreq->cmnd[0];
if ((workreq->cmnd[0] == 0x08) || (workreq->cmnd[0] == 0x28) || (workreq->cmnd[0] == 0x0a) || (workreq->cmnd[0] == 0x2a)) {
i |= 0x0c;
}
outb(i,tmpcip);
} else if ((dev->dev_id == ATP880_DEVID1) ||
(dev->dev_id == ATP880_DEVID2) ) {
tmport = workport - 0x05;
if ((workreq->cmnd[0] == 0x08) || (workreq->cmnd[0] == 0x28) || (workreq->cmnd[0] == 0x0a) || (workreq->cmnd[0] == 0x2a)) {
outb((unsigned char) ((inb(tmport) & 0x3f) | 0xc0), tmport);
} else {
outb((unsigned char) (inb(tmport) & 0x3f), tmport);
}
} else {
tmport = workport + 0x3a;
if ((workreq->cmnd[0] == 0x08) || (workreq->cmnd[0] == 0x28) || (workreq->cmnd[0] == 0x0a) || (workreq->cmnd[0] == 0x2a)) {
outb((unsigned char) ((inb(tmport) & 0xf3) | 0x08), tmport);
} else {
outb((unsigned char) (inb(tmport) & 0xf3), tmport);
}
}
tmport = workport + 0x1b;
j = 0;
id = 1;
id = id << target_id;
/*
* Is this a wide device
*/
if ((id & dev->wide_id[c]) != 0) {
j |= 0x01;
}
outb(j, tmport);
while ((inb(tmport) & 0x01) != j) {
outb(j,tmport);
}
if (dev->id[c][target_id].last_len == 0) {
tmport = workport + 0x18;
outb(0x08, tmport);
dev->in_int[c] = 0;
#ifdef ED_DBGP
printk("dev->id[c][target_id].last_len = 0\n");
#endif
goto handled;
}
#ifdef ED_DBGP
printk("target_id = %d adrcnt = %d\n",target_id,adrcnt);
#endif
prd = dev->id[c][target_id].prd_pos;
while (adrcnt != 0) {
id = ((unsigned short int *)prd)[2];
if (id == 0) {
k = 0x10000;
} else {
k = id;
}
if (k > adrcnt) {
((unsigned short int *)prd)[2] = (unsigned short int)
(k - adrcnt);
((unsigned long *)prd)[0] += adrcnt;
adrcnt = 0;
dev->id[c][target_id].prd_pos = prd;
} else {
adrcnt -= k;
dev->id[c][target_id].prdaddr += 0x08;
prd += 0x08;
if (adrcnt == 0) {
dev->id[c][target_id].prd_pos = prd;
}
}
}
tmpcip = dev->pciport[c] + 0x04;
outl(dev->id[c][target_id].prdaddr, tmpcip);
#ifdef ED_DBGP
printk("dev->id[%d][%d].prdaddr 0x%8x\n", c, target_id, dev->id[c][target_id].prdaddr);
#endif
if (dev->dev_id == ATP885_DEVID) {
tmpcip -= 0x04;
} else {
tmpcip -= 0x02;
outb(0x06, tmpcip);
outb(0x00, tmpcip);
tmpcip -= 0x02;
}
tmport = workport + 0x18;
/*
* Check transfer direction
*/
if (dev->id[c][target_id].dirct != 0) {
outb(0x08, tmport);
outb(0x01, tmpcip);
dev->in_int[c] = 0;
#ifdef ED_DBGP
printk("status 0x80 return dirct != 0\n");
#endif
goto handled;
}
outb(0x08, tmport);
outb(0x09, tmpcip);
dev->in_int[c] = 0;
#ifdef ED_DBGP
printk("status 0x80 return dirct = 0\n");
#endif
goto handled;
}
/*
* Current scsi request on this target
*/
workreq = dev->id[c][target_id].curr_req;
if (i == 0x42) {
if ((dev->last_cmd[c] & 0xf0) != 0x40)
{
dev->last_cmd[c] = 0xff;
}
errstus = 0x02;
workreq->result = errstus;
goto go_42;
}
if (i == 0x16) {
if ((dev->last_cmd[c] & 0xf0) != 0x40) {
dev->last_cmd[c] = 0xff;
}
errstus = 0;
tmport -= 0x08;
errstus = inb(tmport);
if (((dev->r1f[c][target_id] & 0x10) != 0)&&(dev->dev_id==ATP885_DEVID)) {
printk(KERN_WARNING "AEC67162 CRC ERROR !\n");
errstus = 0x02;
}
workreq->result = errstus;
go_42:
if (dev->dev_id == ATP885_DEVID) {
j = inb(dev->baseport + 0x29) | 0x01;
outb(j, dev->baseport + 0x29);
}
/*
* Complete the command
*/
if (workreq->use_sg) {
pci_unmap_sg(dev->pdev,
(struct scatterlist *)workreq->request_buffer,
workreq->use_sg,
workreq->sc_data_direction);
} else if (workreq->request_bufflen &&
workreq->sc_data_direction != DMA_NONE) {
pci_unmap_single(dev->pdev,
workreq->SCp.dma_handle,
workreq->request_bufflen,
workreq->sc_data_direction);
}
spin_lock_irqsave(dev->host->host_lock, flags);
(*workreq->scsi_done) (workreq);
#ifdef ED_DBGP
printk("workreq->scsi_done\n");
#endif
/*
* Clear it off the queue
*/
dev->id[c][target_id].curr_req = NULL;
dev->working[c]--;
spin_unlock_irqrestore(dev->host->host_lock, flags);
/*
* Take it back wide
*/
if (dev->wide_id[c] != 0) {
tmport = workport + 0x1b;
outb(0x01, tmport);
while ((inb(tmport) & 0x01) != 0x01) {
outb(0x01, tmport);
}
}
/*
* If there is stuff to send and nothing going then send it
*/
spin_lock_irqsave(dev->host->host_lock, flags);
if (((dev->last_cmd[c] != 0xff) || (dev->quhd[c] != dev->quend[c])) &&
(dev->in_snd[c] == 0)) {
#ifdef ED_DBGP
printk("Call sent_s870(scsi_done)\n");
#endif
send_s870(dev,c);
}
spin_unlock_irqrestore(dev->host->host_lock, flags);
dev->in_int[c] = 0;
goto handled;
}
if ((dev->last_cmd[c] & 0xf0) != 0x40) {
dev->last_cmd[c] = 0xff;
}
if (i == 0x4f) {
i = 0x89;
}
i &= 0x0f;
if (i == 0x09) {
tmpcip += 4;
outl(dev->id[c][target_id].prdaddr, tmpcip);
tmpcip = tmpcip - 2;
outb(0x06, tmpcip);
outb(0x00, tmpcip);
tmpcip = tmpcip - 2;
tmport = workport + 0x10;
outb(0x41, tmport);
if (dev->dev_id == ATP885_DEVID) {
tmport += 2;
k = dev->id[c][target_id].last_len;
outb((unsigned char) (((unsigned char *) (&k))[2]), tmport++);
outb((unsigned char) (((unsigned char *) (&k))[1]), tmport++);
outb((unsigned char) (((unsigned char *) (&k))[0]), tmport);
dev->id[c][target_id].dirct = 0x00;
tmport += 0x04;
} else {
dev->id[c][target_id].dirct = 0x00;
tmport += 0x08;
}
outb(0x08, tmport);
outb(0x09, tmpcip);
dev->in_int[c] = 0;
goto handled;
}
if (i == 0x08) {
tmpcip += 4;
outl(dev->id[c][target_id].prdaddr, tmpcip);
tmpcip = tmpcip - 2;
outb(0x06, tmpcip);
outb(0x00, tmpcip);
tmpcip = tmpcip - 2;
tmport = workport + 0x10;
outb(0x41, tmport);
if (dev->dev_id == ATP885_DEVID) {
tmport += 2;
k = dev->id[c][target_id].last_len;
outb((unsigned char) (((unsigned char *) (&k))[2]), tmport++);
outb((unsigned char) (((unsigned char *) (&k))[1]), tmport++);
outb((unsigned char) (((unsigned char *) (&k))[0]), tmport++);
} else {
tmport += 5;
}
outb((unsigned char) (inb(tmport) | 0x20), tmport);
dev->id[c][target_id].dirct = 0x20;
tmport += 0x03;
outb(0x08, tmport);
outb(0x01, tmpcip);
dev->in_int[c] = 0;
goto handled;
}
tmport -= 0x07;
if (i == 0x0a) {
outb(0x30, tmport);
} else {
outb(0x46, tmport);
}
dev->id[c][target_id].dirct = 0x00;
tmport += 0x02;
outb(0x00, tmport++);
outb(0x00, tmport++);
outb(0x00, tmport++);
tmport += 0x03;
outb(0x08, tmport);
dev->in_int[c] = 0;
goto handled;
} else {
// tmport = workport + 0x17;
// inb(tmport);
// dev->working[c] = 0;
dev->in_int[c] = 0;
goto handled;
}
handled:
#ifdef ED_DBGP
printk("atp870u_intr_handle exit\n");
#endif
return IRQ_HANDLED;
}
/**
* atp870u_queuecommand - Queue SCSI command
* @req_p: request block
* @done: completion function
*
* Queue a command to the ATP queue. Called with the host lock held.
*/
static int atp870u_queuecommand(struct scsi_cmnd * req_p,
void (*done) (struct scsi_cmnd *))
{
unsigned char c;
unsigned int tmport,m;
struct atp_unit *dev;
struct Scsi_Host *host;
c = scmd_channel(req_p);
req_p->sense_buffer[0]=0;
req_p->resid = 0;
if (scmd_channel(req_p) > 1) {
req_p->result = 0x00040000;
done(req_p);
#ifdef ED_DBGP
printk("atp870u_queuecommand : req_p->device->channel > 1\n");
#endif
return 0;
}
host = req_p->device->host;
dev = (struct atp_unit *)&host->hostdata;
m = 1;
m = m << scmd_id(req_p);
/*
* Fake a timeout for missing targets
*/
if ((m & dev->active_id[c]) == 0) {
req_p->result = 0x00040000;
done(req_p);
return 0;
}
if (done) {
req_p->scsi_done = done;
} else {
#ifdef ED_DBGP
printk( "atp870u_queuecommand: done can't be NULL\n");
#endif
req_p->result = 0;
done(req_p);
return 0;
}
/*
* Count new command
*/
dev->quend[c]++;
if (dev->quend[c] >= qcnt) {
dev->quend[c] = 0;
}
/*
* Check queue state
*/
if (dev->quhd[c] == dev->quend[c]) {
if (dev->quend[c] == 0) {
dev->quend[c] = qcnt;
}
#ifdef ED_DBGP
printk("atp870u_queuecommand : dev->quhd[c] == dev->quend[c]\n");
#endif
dev->quend[c]--;
req_p->result = 0x00020000;
done(req_p);
return 0;
}
dev->quereq[c][dev->quend[c]] = req_p;
tmport = dev->ioport[c] + 0x1c;
#ifdef ED_DBGP
printk("dev->ioport[c] = %x inb(tmport) = %x dev->in_int[%d] = %d dev->in_snd[%d] = %d\n",dev->ioport[c],inb(tmport),c,dev->in_int[c],c,dev->in_snd[c]);
#endif
if ((inb(tmport) == 0) && (dev->in_int[c] == 0) && (dev->in_snd[c] == 0)) {
#ifdef ED_DBGP
printk("Call sent_s870(atp870u_queuecommand)\n");
#endif
send_s870(dev,c);
}
#ifdef ED_DBGP
printk("atp870u_queuecommand : exit\n");
#endif
return 0;
}
/**
* send_s870 - send a command to the controller
* @host: host
*
* On entry there is work queued to be done. We move some of that work to the
* controller itself.
*
* Caller holds the host lock.
*/
static void send_s870(struct atp_unit *dev,unsigned char c)
{
unsigned int tmport;
struct scsi_cmnd *workreq;
unsigned int i;//,k;
unsigned char j, target_id;
unsigned char *prd;
unsigned short int tmpcip, w;
unsigned long l, bttl = 0;
unsigned int workport;
struct scatterlist *sgpnt;
unsigned long sg_count;
if (dev->in_snd[c] != 0) {
#ifdef ED_DBGP
printk("cmnd in_snd\n");
#endif
return;
}
#ifdef ED_DBGP
printk("Sent_s870 enter\n");
#endif
dev->in_snd[c] = 1;
if ((dev->last_cmd[c] != 0xff) && ((dev->last_cmd[c] & 0x40) != 0)) {
dev->last_cmd[c] &= 0x0f;
workreq = dev->id[c][dev->last_cmd[c]].curr_req;
if (workreq != NULL) { /* check NULL pointer */
goto cmd_subp;
}
dev->last_cmd[c] = 0xff;
if (dev->quhd[c] == dev->quend[c]) {
dev->in_snd[c] = 0;
return ;
}
}
if ((dev->last_cmd[c] != 0xff) && (dev->working[c] != 0)) {
dev->in_snd[c] = 0;
return ;
}
dev->working[c]++;
j = dev->quhd[c];
dev->quhd[c]++;
if (dev->quhd[c] >= qcnt) {
dev->quhd[c] = 0;
}
workreq = dev->quereq[c][dev->quhd[c]];
if (dev->id[c][scmd_id(workreq)].curr_req == 0) {
dev->id[c][scmd_id(workreq)].curr_req = workreq;
dev->last_cmd[c] = scmd_id(workreq);
goto cmd_subp;
}
dev->quhd[c] = j;
dev->working[c]--;
dev->in_snd[c] = 0;
return;
cmd_subp:
workport = dev->ioport[c];
tmport = workport + 0x1f;
if ((inb(tmport) & 0xb0) != 0) {
goto abortsnd;
}
tmport = workport + 0x1c;
if (inb(tmport) == 0) {
goto oktosend;
}
abortsnd:
#ifdef ED_DBGP
printk("Abort to Send\n");
#endif
dev->last_cmd[c] |= 0x40;
dev->in_snd[c] = 0;
return;
oktosend:
#ifdef ED_DBGP
printk("OK to Send\n");
scmd_printk(KERN_DEBUG, workreq, "CDB");
for(i=0;i<workreq->cmd_len;i++) {
printk(" %x",workreq->cmnd[i]);
}
printk("\n");
#endif
if (dev->dev_id == ATP885_DEVID) {
j = inb(dev->baseport + 0x29) & 0xfe;
outb(j, dev->baseport + 0x29);
dev->r1f[c][scmd_id(workreq)] = 0;
}
if (workreq->cmnd[0] == READ_CAPACITY) {
if (workreq->request_bufflen > 8) {
workreq->request_bufflen = 0x08;
}
}
if (workreq->cmnd[0] == 0x00) {
workreq->request_bufflen = 0;
}
tmport = workport + 0x1b;
j = 0;
target_id = scmd_id(workreq);
/*
* Wide ?
*/
w = 1;
w = w << target_id;
if ((w & dev->wide_id[c]) != 0) {
j |= 0x01;
}
outb(j, tmport);
while ((inb(tmport) & 0x01) != j) {
outb(j,tmport);
#ifdef ED_DBGP
printk("send_s870 while loop 1\n");
#endif
}
/*
* Write the command
*/
tmport = workport;
outb(workreq->cmd_len, tmport++);
outb(0x2c, tmport++);
if (dev->dev_id == ATP885_DEVID) {
outb(0x7f, tmport++);
} else {
outb(0xcf, tmport++);
}
for (i = 0; i < workreq->cmd_len; i++) {
outb(workreq->cmnd[i], tmport++);
}
tmport = workport + 0x0f;
outb(workreq->device->lun, tmport);
tmport += 0x02;
/*
* Write the target
*/
outb(dev->id[c][target_id].devsp, tmport++);
#ifdef ED_DBGP
printk("dev->id[%d][%d].devsp = %2x\n",c,target_id,dev->id[c][target_id].devsp);
#endif
/*
* Figure out the transfer size
*/
if (workreq->use_sg) {
#ifdef ED_DBGP
printk("Using SGL\n");
#endif
l = 0;
sgpnt = (struct scatterlist *) workreq->request_buffer;
sg_count = pci_map_sg(dev->pdev, sgpnt, workreq->use_sg,
workreq->sc_data_direction);
for (i = 0; i < workreq->use_sg; i++) {
if (sgpnt[i].length == 0 || workreq->use_sg > ATP870U_SCATTER) {
panic("Foooooooood fight!");
}
l += sgpnt[i].length;
}
#ifdef ED_DBGP
printk( "send_s870: workreq->use_sg %d, sg_count %d l %8ld\n", workreq->use_sg, sg_count, l);
#endif
} else if(workreq->request_bufflen && workreq->sc_data_direction != PCI_DMA_NONE) {
#ifdef ED_DBGP
printk("Not using SGL\n");
#endif
workreq->SCp.dma_handle = pci_map_single(dev->pdev, workreq->request_buffer,
workreq->request_bufflen,
workreq->sc_data_direction);
l = workreq->request_bufflen;
#ifdef ED_DBGP
printk( "send_s870: workreq->use_sg %d, l %8ld\n", workreq->use_sg, l);
#endif
} else l = 0;
/*
* Write transfer size
*/
outb((unsigned char) (((unsigned char *) (&l))[2]), tmport++);
outb((unsigned char) (((unsigned char *) (&l))[1]), tmport++);
outb((unsigned char) (((unsigned char *) (&l))[0]), tmport++);
j = target_id;
dev->id[c][j].last_len = l;
dev->id[c][j].tran_len = 0;
#ifdef ED_DBGP
printk("dev->id[%2d][%2d].last_len = %d\n",c,j,dev->id[c][j].last_len);
#endif
/*
* Flip the wide bits
*/
if ((j & 0x08) != 0) {
j = (j & 0x07) | 0x40;
}
/*
* Check transfer direction
*/
if (workreq->sc_data_direction == DMA_TO_DEVICE) {
outb((unsigned char) (j | 0x20), tmport++);
} else {
outb(j, tmport++);
}
outb((unsigned char) (inb(tmport) | 0x80), tmport);
outb(0x80, tmport);
tmport = workport + 0x1c;
dev->id[c][target_id].dirct = 0;
if (l == 0) {
if (inb(tmport) == 0) {
tmport = workport + 0x18;
#ifdef ED_DBGP
printk("change SCSI_CMD_REG 0x08\n");
#endif
outb(0x08, tmport);
} else {
dev->last_cmd[c] |= 0x40;
}
dev->in_snd[c] = 0;
return;
}
tmpcip = dev->pciport[c];
prd = dev->id[c][target_id].prd_table;
dev->id[c][target_id].prd_pos = prd;
/*
* Now write the request list. Either as scatter/gather or as
* a linear chain.
*/
if (workreq->use_sg) {
sgpnt = (struct scatterlist *) workreq->request_buffer;
i = 0;
for (j = 0; j < workreq->use_sg; j++) {
bttl = sg_dma_address(&sgpnt[j]);
l=sg_dma_len(&sgpnt[j]);
#ifdef ED_DBGP
printk("1. bttl %x, l %x\n",bttl, l);
#endif
while (l > 0x10000) {
(((u16 *) (prd))[i + 3]) = 0x0000;
(((u16 *) (prd))[i + 2]) = 0x0000;
(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
l -= 0x10000;
bttl += 0x10000;
i += 0x04;
}
(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
(((u16 *) (prd))[i + 2]) = cpu_to_le16(l);
(((u16 *) (prd))[i + 3]) = 0;
i += 0x04;
}
(((u16 *) (prd))[i - 1]) = cpu_to_le16(0x8000);
#ifdef ED_DBGP
printk("prd %4x %4x %4x %4x\n",(((unsigned short int *)prd)[0]),(((unsigned short int *)prd)[1]),(((unsigned short int *)prd)[2]),(((unsigned short int *)prd)[3]));
printk("2. bttl %x, l %x\n",bttl, l);
#endif
} else {
/*
* For a linear request write a chain of blocks
*/
bttl = workreq->SCp.dma_handle;
l = workreq->request_bufflen;
i = 0;
#ifdef ED_DBGP
printk("3. bttl %x, l %x\n",bttl, l);
#endif
while (l > 0x10000) {
(((u16 *) (prd))[i + 3]) = 0x0000;
(((u16 *) (prd))[i + 2]) = 0x0000;
(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
l -= 0x10000;
bttl += 0x10000;
i += 0x04;
}
(((u16 *) (prd))[i + 3]) = cpu_to_le16(0x8000);
(((u16 *) (prd))[i + 2]) = cpu_to_le16(l);
(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
#ifdef ED_DBGP
printk("prd %4x %4x %4x %4x\n",(((unsigned short int *)prd)[0]),(((unsigned short int *)prd)[1]),(((unsigned short int *)prd)[2]),(((unsigned short int *)prd)[3]));
printk("4. bttl %x, l %x\n",bttl, l);
#endif
}
tmpcip += 4;
#ifdef ED_DBGP
printk("send_s870: prdaddr_2 0x%8x tmpcip %x target_id %d\n", dev->id[c][target_id].prdaddr,tmpcip,target_id);
#endif
dev->id[c][target_id].prdaddr = dev->id[c][target_id].prd_bus;
outl(dev->id[c][target_id].prdaddr, tmpcip);