Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 3970 insertions, 0 deletions

diff --git a/drivers/scsi/atp870u.c b/drivers/scsi/atp870u.c
new file mode 100644
index 000000000000..45b75ddacaab
--- /dev/null
+++ b/drivers/scsi/atp870u.c
@@ -0,0 +1,3970 @@
+/* 
+ *  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 <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			
+			printk(KERN_DEBUG "Channel = %d ID = %d LUN = %d CDB",c,workreq->device->id,workreq->device->lun);
+			for(l=0;l<workreq->cmd_len;l++)
+			{
+				printk(KERN_DEBUG " %x",workreq->cmnd[l]);
+			}
+#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->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 = req_p->device->channel;	
+	req_p->sense_buffer[0]=0;
+	req_p->resid = 0;
+	if (req_p->device->channel > 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 << req_p->device->id;
+
+	/*
+	 *      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][workreq->device->id].curr_req == 0) {	
+		dev->id[c][workreq->device->id].curr_req = workreq;
+		dev->last_cmd[c] = workreq->device->id;
+		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");
+	printk("CDB");
+	for(i=0;i<workreq->cmd_len;i++) {
+		printk(" %x",workreq->cmnd[i]);
+	}
+	printk("\nChannel = %d ID = %d LUN = %d\n",c,workreq->device->id,workreq->device->lun);
+#endif	
+	if (dev->dev_id == ATP885_DEVID) {
+		j = inb(dev->baseport + 0x29) & 0xfe;
+		outb(j, dev->baseport + 0x29);
+		dev->r1f[c][workreq->device->id] = 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 = workreq->device->id;
+
+	/*
+	 *	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	
+	outl(dev->id[c][target_id].prdaddr, tmpcip);
+	tmpcip = tmpcip - 2;
+	outb(0x06, tmpcip);
+	outb(0x00, tmpcip);
+	if (dev->dev_id == ATP885_DEVID) {
+		tmpcip--;
+		j=inb(tmpcip) & 0xf3;
+		if ((workreq->cmnd[0] == 0x08) || (workreq->cmnd[0] == 0x28) ||
+	    	(workreq->cmnd[0] == 0x0a) || (workreq->cmnd[0] == 0x2a)) {
+	   		j |= 0x0c;
+		}
+		outb(j,tmpcip);
+		tmpcip--;	    	
+	} else if ((dev->dev_id == ATP880_DEVID1) ||
+	    	   (dev->dev_id == ATP880_DEVID2)) {
+		tmpcip =tmpcip -2;	
+		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 {		
+		tmpcip =tmpcip -2;
+		tmport = workport + 0x3a;
+		if ((workreq->cmnd[0] == 0x08) || (workreq->cmnd[0] == 0x28) || (workreq->cmnd[0] == 0x0a) || (workreq->cmnd[0] == 0x2a)) {
+			outb((inb(tmport) & 0xf3) | 0x08, tmport);
+		} else {
+			outb(inb(tmport) & 0xf3, tmport);
+		}		
+	}	
+	tmport = workport + 0x1c;
+
+	if(workreq->sc_data_direction == DMA_TO_DEVICE) {
+		dev->id[c][target_id].dirct = 0x20;
+		if (inb(tmport) == 0) {
+			tmport = workport + 0x18;
+			outb(0x08, tmport);
+			outb(0x01, tmpcip);
+#ifdef ED_DBGP		
+		printk( "start DMA(to target)\n");
+#endif				
+		} else {
+			dev->last_cmd[c] |= 0x40;
+		}
+		dev->in_snd[c] = 0;
+		return;
+	}
+	if (inb(tmport) == 0) {		
+		tmport = workport + 0x18;
+		outb(0x08, tmport);
+		outb(0x09, tmpcip);
+#ifdef ED_DBGP		
+		printk( "start DMA(to host)\n");
+#endif			
+	} else {
+		dev->last_cmd[c] |= 0x40;
+	}
+	dev->in_snd[c] = 0;
+	return;
+
+}
+
+static unsigned char fun_scam(struct atp_unit *dev, unsigned short int *val)
+{
+	unsigned int tmport;
+	unsigned short int i, k;
+	unsigned char j;
+
+	tmport = dev->ioport[0] + 0x1c;
+	outw(*val, tmport);
+FUN_D7:
+	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns)  */
+		k = inw(tmport);
+		j = (unsigned char) (k >> 8);
+		if ((k & 0x8000) != 0) {	/* DB7 all release?    */
+			goto FUN_D7;
+		}
+	}
+	*val |= 0x4000;		/* assert DB6           */
+	outw(*val, tmport);
+	*val &= 0xdfff;		/* assert DB5           */
+	outw(*val, tmport);
+FUN_D5:
+	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns) */
+		if ((inw(tmport) & 0x2000) != 0) {	/* DB5 all release?       */
+			goto FUN_D5;
+		}
+	}
+	*val |= 0x8000;		/* no DB4-0, assert DB7    */
+	*val &= 0xe0ff;
+	outw(*val, tmport);
+	*val &= 0xbfff;		/* release DB6             */
+	outw(*val, tmport);
+FUN_D6:
+	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns)  */
+		if ((inw(tmport) & 0x4000) != 0) {	/* DB6 all release?  */
+			goto FUN_D6;
+		}
+	}
+
+	return j;
+}
+
+static void tscam(struct Scsi_Host *host)
+{
+
+	unsigned int tmport;
+	unsigned char i, j, k;
+	unsigned long n;
+	unsigned short int m, assignid_map, val;
+	unsigned char mbuf[33], quintet[2];
+	struct atp_unit *dev = (struct atp_unit *)&host->hostdata;
+	static unsigned char g2q_tab[8] = {
+		0x38, 0x31, 0x32, 0x2b, 0x34, 0x2d, 0x2e, 0x27
+	};
+
+/*  I can't believe we need this before we've even done anything.  Remove it
+ *  and see if anyone bitches.
+	for (i = 0; i < 0x10; i++) {
+		udelay(0xffff);
+	}
+ */
+
+	tmport = dev->ioport[0] + 1;
+	outb(0x08, tmport++);
+	outb(0x7f, tmport);
+	tmport = dev->ioport[0] + 0x11;
+	outb(0x20, tmport);
+
+	if ((dev->scam_on & 0x40) == 0) {
+		return;
+	}
+	m = 1;
+	m <<= dev->host_id[0];
+	j = 16;
+	if (dev->chip_ver < 4) {
+		m |= 0xff00;
+		j = 8;
+	}
+	assignid_map = m;
+	tmport = dev->ioport[0] + 0x02;
+	outb(0x02, tmport++);	/* 2*2=4ms,3EH 2/32*3E=3.9ms */
+	outb(0, tmport++);
+	outb(0, tmport++);
+	outb(0, tmport++);
+	outb(0, tmport++);
+	outb(0, tmport++);
+	outb(0, tmport++);
+
+	for (i = 0; i < j; i++) {
+		m = 1;
+		m = m << i;
+		if ((m & assignid_map) != 0) {
+			continue;
+		}
+		tmport = dev->ioport[0] + 0x0f;
+		outb(0, tmport++);
+		tmport += 0x02;
+		outb(0, tmport++);
+		outb(0, tmport++);
+		outb(0, tmport++);
+		if (i > 7) {
+			k = (i & 0x07) | 0x40;
+		} else {
+			k = i;
+		}
+		outb(k, tmport++);
+		tmport = dev->ioport[0] + 0x1b;
+		if (dev->chip_ver == 4) {
+			outb(0x01, tmport);
+		} else {
+			outb(0x00, tmport);
+		}
+wait_rdyok:
+		tmport = dev->ioport[0] + 0x18;
+		outb(0x09, tmport);
+		tmport += 0x07;
+
+		while ((inb(tmport) & 0x80) == 0x00)
+			cpu_relax();
+		tmport -= 0x08;
+		k = inb(tmport);
+		if (k != 0x16) {
+			if ((k == 0x85) || (k == 0x42)) {
+				continue;
+			}
+			tmport = dev->ioport[0] + 0x10;
+			outb(0x41, tmport);
+			goto wait_rdyok;
+		}
+		assignid_map |= m;
+
+	}
+	tmport = dev->ioport[0]