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Commit f823bcae authored by Kyle McMartin's avatar Kyle McMartin Committed by Kyle McMartin
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[PARISC] Convert ccio-dma.c to use seq_file 



Gut ccio-dma.c of the ugly proc append and snprintf cruft and
just use seq_printf instead. Tested on a K-class.

Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
parent 0bdd340c

drivers/parisc/ccio-dma.c

+74 −86
Original line number Diff line number Diff line
@@ -40,6 +40,8 @@ 
#include <linux/string.h>

#include <linux/pci.h>

#include <linux/reboot.h>

#include <linux/proc_fs.h>

#include <linux/seq_file.h>



#include <asm/byteorder.h>

#include <asm/cache.h>		/* for L1_CACHE_BYTES */
@@ -1019,62 +1021,33 @@ static struct hppa_dma_ops ccio_ops = { 
};



#ifdef CONFIG_PROC_FS

static int proc_append(char *src, int len, char **dst, off_t *offset, int *max)

{

	if (len < *offset) {

		*offset -= len;

		return 0;

	}

	if (*offset > 0) {

		src += *offset;

		len -= *offset;

		*offset = 0;

	}

	if (len > *max) {

		len = *max;

	}

	memcpy(*dst, src, len);

	*dst += len;

	*max -= len;

	return (*max == 0);

}



static int ccio_proc_info(char *buf, char **start, off_t offset, int count,

			  int *eof, void *data)

static int ccio_proc_info(struct seq_file *m, void *p)

{

	int max = count;

	char tmp[80]; /* width of an ANSI-standard terminal */

	int len = 0;

	struct ioc *ioc = ioc_list;



	while (ioc != NULL) {

		unsigned int total_pages = ioc->res_size << 3;

		unsigned long avg = 0, min, max;

		int j, len;

		int j;



		len = sprintf(tmp, "%s\n", ioc->name);

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

		len += seq_printf(m, "%s\n", ioc->name);

		

		len = sprintf(tmp, "Cujo 2.0 bug    : %s\n",

		len += seq_printf(m, "Cujo 2.0 bug    : %s\n",

				  (ioc->cujo20_bug ? "yes" : "no"));

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

		

		len = sprintf(tmp, "IO PDIR size    : %d bytes (%d entries)\n",

		len += seq_printf(m, "IO PDIR size    : %d bytes (%d entries)\n",

			       total_pages * 8, total_pages);

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;



#ifdef CCIO_MAP_STATS

		len = sprintf(tmp, "IO PDIR entries : %ld free  %ld used (%d%%)\n",

		len += seq_printf(m, "IO PDIR entries : %ld free  %ld used (%d%%)\n",

				  total_pages - ioc->used_pages, ioc->used_pages,

				  (int)(ioc->used_pages * 100 / total_pages));

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

#endif

		len = sprintf(tmp, "Resource bitmap : %d bytes (%d pages)\n", 



		len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n", 

				  ioc->res_size, total_pages);

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;



#ifdef CCIO_SEARCH_TIME

		min = max = ioc->avg_search[0];

		for(j = 0; j < CCIO_SEARCH_SAMPLE; ++j) {
@@ -1085,70 +1058,83 @@ static int ccio_proc_info(char *buf, char **start, off_t offset, int count, 
				min = ioc->avg_search[j];

		}

		avg /= CCIO_SEARCH_SAMPLE;

		len = sprintf(tmp, "  Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",

		len += seq_printf(m, "  Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",

				  min, avg, max);

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

#endif

#ifdef CCIO_MAP_STATS

		len = sprintf(tmp, "pci_map_single(): %8ld calls  %8ld pages (avg %d/1000)\n",

		len += seq_printf(m, "pci_map_single(): %8ld calls  %8ld pages (avg %d/1000)\n",

				  ioc->msingle_calls, ioc->msingle_pages,

				  (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

		



		/* KLUGE - unmap_sg calls unmap_single for each mapped page */

		min = ioc->usingle_calls - ioc->usg_calls;

		max = ioc->usingle_pages - ioc->usg_pages;

		len = sprintf(tmp, "pci_unmap_single: %8ld calls  %8ld pages (avg %d/1000)\n",

		len += seq_printf(m, "pci_unmap_single: %8ld calls  %8ld pages (avg %d/1000)\n",

				  min, max, (int)((max * 1000)/min));

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

 

		len = sprintf(tmp, "pci_map_sg()    : %8ld calls  %8ld pages (avg %d/1000)\n",

		len += seq_printf(m, "pci_map_sg()    : %8ld calls  %8ld pages (avg %d/1000)\n",

				  ioc->msg_calls, ioc->msg_pages,

				  (int)((ioc->msg_pages * 1000)/ioc->msg_calls));

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

		len = sprintf(tmp, "pci_unmap_sg()  : %8ld calls  %8ld pages (avg %d/1000)\n\n\n",



		len += seq_printf(m, "pci_unmap_sg()  : %8ld calls  %8ld pages (avg %d/1000)\n\n\n",

				  ioc->usg_calls, ioc->usg_pages,

				  (int)((ioc->usg_pages * 1000)/ioc->usg_calls));

		if (proc_append(tmp, len, &buf, &offset, &count))

			break;

#endif	/* CCIO_MAP_STATS */



		ioc = ioc->next;

	}



	if (count == 0) {

		*eof = 1;

	return 0;

}

	return (max - count);



static int ccio_proc_info_open(struct inode *inode, struct file *file)

{

	return single_open(file, &ccio_proc_info, NULL);

}



static int ccio_resource_map(char *buf, char **start, off_t offset, int len,

			     int *eof, void *data)

static struct file_operations ccio_proc_info_fops = {

	.owner = THIS_MODULE,

	.open = ccio_proc_info_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static int ccio_proc_bitmap_info(struct seq_file *m, void *p)

{

	int len = 0;

	struct ioc *ioc = ioc_list;



	buf[0] = '\0';

	while (ioc != NULL) {

		u32 *res_ptr = (u32 *)ioc->res_map;

		int j;



		for (j = 0; j < (ioc->res_size / sizeof(u32)); j++) {

			if ((j & 7) == 0)

				strcat(buf,"\n   ");

			sprintf(buf, "%s %08x", buf, *res_ptr);

				len += seq_puts(m, "\n   ");

			len += seq_printf(m, "%08x", *res_ptr);

			res_ptr++;

		}

		strcat(buf, "\n\n");

		len += seq_puts(m, "\n\n");

		ioc = ioc->next;

		break; /* XXX - remove me */

	}



	return strlen(buf);

	return 0;

}



static int ccio_proc_bitmap_open(struct inode *inode, struct file *file)

{

	return single_open(file, &ccio_proc_bitmap_info, NULL);

}



static struct file_operations ccio_proc_bitmap_fops = {

	.owner = THIS_MODULE,

	.open = ccio_proc_bitmap_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};

#endif



/**
@@ -1556,6 +1542,7 @@ static int ccio_probe(struct parisc_device *dev) 
{

	int i;

	struct ioc *ioc, **ioc_p = &ioc_list;

	struct proc_dir_entry *info_entry, *bitmap_entry;

	

	ioc = kzalloc(sizeof(struct ioc), GFP_KERNEL);

	if (ioc == NULL) {
@@ -1583,13 +1570,14 @@ static int ccio_probe(struct parisc_device *dev) 
	BUG_ON(dev->dev.platform_data == NULL);

	HBA_DATA(dev->dev.platform_data)->iommu = ioc;

	



	if (ioc_count == 0) {

		/* FIXME: Create separate entries for each ioc */

		create_proc_read_entry(MODULE_NAME, S_IRWXU, proc_runway_root,

				       ccio_proc_info, NULL);

		create_proc_read_entry(MODULE_NAME"-bitmap", S_IRWXU,

				       proc_runway_root, ccio_resource_map, NULL);

		info_entry = create_proc_entry(MODULE_NAME, 0, proc_runway_root);

		if (info_entry)

			info_entry->proc_fops = &ccio_proc_info_fops;



		bitmap_entry = create_proc_entry(MODULE_NAME"-bitmap", 0, proc_runway_root);

		if (bitmap_entry)

			bitmap_entry->proc_fops = &ccio_proc_bitmap_fops;

	}



	ioc_count++;