forked from Minki/linux
[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: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Kyle McMartin
Kyle McMartin
parent
0bdd340c09
commit
f823bcae2b
@ -40,6 +40,8 @@
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#include <linux/string.h>
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#include <linux/pci.h>
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#include <linux/reboot.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <asm/byteorder.h>
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#include <asm/cache.h> /* for L1_CACHE_BYTES */
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@ -1019,62 +1021,33 @@ static struct hppa_dma_ops ccio_ops = {
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};
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#ifdef CONFIG_PROC_FS
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static int proc_append(char *src, int len, char **dst, off_t *offset, int *max)
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static int ccio_proc_info(struct seq_file *m, void *p)
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{
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if (len < *offset) {
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*offset -= len;
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return 0;
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}
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if (*offset > 0) {
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src += *offset;
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len -= *offset;
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*offset = 0;
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}
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if (len > *max) {
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len = *max;
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}
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memcpy(*dst, src, len);
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*dst += len;
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*max -= len;
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return (*max == 0);
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}
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static int ccio_proc_info(char *buf, char **start, off_t offset, int count,
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int *eof, void *data)
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{
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int max = count;
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char tmp[80]; /* width of an ANSI-standard terminal */
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int len = 0;
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struct ioc *ioc = ioc_list;
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while (ioc != NULL) {
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unsigned int total_pages = ioc->res_size << 3;
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unsigned long avg = 0, min, max;
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int j, len;
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int j;
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len = sprintf(tmp, "%s\n", ioc->name);
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "%s\n", ioc->name);
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len = sprintf(tmp, "Cujo 2.0 bug : %s\n",
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(ioc->cujo20_bug ? "yes" : "no"));
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "Cujo 2.0 bug : %s\n",
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(ioc->cujo20_bug ? "yes" : "no"));
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len = sprintf(tmp, "IO PDIR size : %d bytes (%d entries)\n",
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total_pages * 8, total_pages);
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n",
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total_pages * 8, total_pages);
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#ifdef CCIO_MAP_STATS
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len = sprintf(tmp, "IO PDIR entries : %ld free %ld used (%d%%)\n",
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total_pages - ioc->used_pages, ioc->used_pages,
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(int)(ioc->used_pages * 100 / total_pages));
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "IO PDIR entries : %ld free %ld used (%d%%)\n",
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total_pages - ioc->used_pages, ioc->used_pages,
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(int)(ioc->used_pages * 100 / total_pages));
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#endif
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len = sprintf(tmp, "Resource bitmap : %d bytes (%d pages)\n",
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ioc->res_size, total_pages);
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n",
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ioc->res_size, total_pages);
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#ifdef CCIO_SEARCH_TIME
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min = max = ioc->avg_search[0];
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for(j = 0; j < CCIO_SEARCH_SAMPLE; ++j) {
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@ -1085,70 +1058,83 @@ static int ccio_proc_info(char *buf, char **start, off_t offset, int count,
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min = ioc->avg_search[j];
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}
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avg /= CCIO_SEARCH_SAMPLE;
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len = sprintf(tmp, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
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min, avg, max);
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
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min, avg, max);
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#endif
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#ifdef CCIO_MAP_STATS
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len = sprintf(tmp, "pci_map_single(): %8ld calls %8ld pages (avg %d/1000)\n",
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ioc->msingle_calls, ioc->msingle_pages,
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(int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "pci_map_single(): %8ld calls %8ld pages (avg %d/1000)\n",
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ioc->msingle_calls, ioc->msingle_pages,
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(int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));
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/* KLUGE - unmap_sg calls unmap_single for each mapped page */
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min = ioc->usingle_calls - ioc->usg_calls;
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max = ioc->usingle_pages - ioc->usg_pages;
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len = sprintf(tmp, "pci_unmap_single: %8ld calls %8ld pages (avg %d/1000)\n",
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min, max, (int)((max * 1000)/min));
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "pci_unmap_single: %8ld calls %8ld pages (avg %d/1000)\n",
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min, max, (int)((max * 1000)/min));
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len = sprintf(tmp, "pci_map_sg() : %8ld calls %8ld pages (avg %d/1000)\n",
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ioc->msg_calls, ioc->msg_pages,
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(int)((ioc->msg_pages * 1000)/ioc->msg_calls));
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len = sprintf(tmp, "pci_unmap_sg() : %8ld calls %8ld pages (avg %d/1000)\n\n\n",
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ioc->usg_calls, ioc->usg_pages,
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(int)((ioc->usg_pages * 1000)/ioc->usg_calls));
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if (proc_append(tmp, len, &buf, &offset, &count))
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break;
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len += seq_printf(m, "pci_map_sg() : %8ld calls %8ld pages (avg %d/1000)\n",
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ioc->msg_calls, ioc->msg_pages,
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(int)((ioc->msg_pages * 1000)/ioc->msg_calls));
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len += seq_printf(m, "pci_unmap_sg() : %8ld calls %8ld pages (avg %d/1000)\n\n\n",
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ioc->usg_calls, ioc->usg_pages,
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(int)((ioc->usg_pages * 1000)/ioc->usg_calls));
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#endif /* CCIO_MAP_STATS */
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ioc = ioc->next;
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}
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if (count == 0) {
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*eof = 1;
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}
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return (max - count);
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return 0;
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}
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static int ccio_resource_map(char *buf, char **start, off_t offset, int len,
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int *eof, void *data)
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static int ccio_proc_info_open(struct inode *inode, struct file *file)
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{
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return single_open(file, &ccio_proc_info, NULL);
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}
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static struct file_operations ccio_proc_info_fops = {
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.owner = THIS_MODULE,
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.open = ccio_proc_info_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int ccio_proc_bitmap_info(struct seq_file *m, void *p)
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{
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int len = 0;
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struct ioc *ioc = ioc_list;
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buf[0] = '\0';
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while (ioc != NULL) {
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u32 *res_ptr = (u32 *)ioc->res_map;
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int j;
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for (j = 0; j < (ioc->res_size / sizeof(u32)); j++) {
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if ((j & 7) == 0)
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strcat(buf,"\n ");
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sprintf(buf, "%s %08x", buf, *res_ptr);
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len += seq_puts(m, "\n ");
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len += seq_printf(m, "%08x", *res_ptr);
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res_ptr++;
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}
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strcat(buf, "\n\n");
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len += seq_puts(m, "\n\n");
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ioc = ioc->next;
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break; /* XXX - remove me */
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}
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return strlen(buf);
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return 0;
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}
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static int ccio_proc_bitmap_open(struct inode *inode, struct file *file)
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{
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return single_open(file, &ccio_proc_bitmap_info, NULL);
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}
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static struct file_operations ccio_proc_bitmap_fops = {
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.owner = THIS_MODULE,
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.open = ccio_proc_bitmap_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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#endif
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/**
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@ -1556,6 +1542,7 @@ static int ccio_probe(struct parisc_device *dev)
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{
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int i;
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struct ioc *ioc, **ioc_p = &ioc_list;
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struct proc_dir_entry *info_entry, *bitmap_entry;
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ioc = kzalloc(sizeof(struct ioc), GFP_KERNEL);
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if (ioc == NULL) {
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@ -1583,13 +1570,14 @@ static int ccio_probe(struct parisc_device *dev)
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BUG_ON(dev->dev.platform_data == NULL);
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HBA_DATA(dev->dev.platform_data)->iommu = ioc;
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if (ioc_count == 0) {
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/* FIXME: Create separate entries for each ioc */
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create_proc_read_entry(MODULE_NAME, S_IRWXU, proc_runway_root,
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ccio_proc_info, NULL);
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create_proc_read_entry(MODULE_NAME"-bitmap", S_IRWXU,
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proc_runway_root, ccio_resource_map, NULL);
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info_entry = create_proc_entry(MODULE_NAME, 0, proc_runway_root);
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if (info_entry)
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info_entry->proc_fops = &ccio_proc_info_fops;
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bitmap_entry = create_proc_entry(MODULE_NAME"-bitmap", 0, proc_runway_root);
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if (bitmap_entry)
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bitmap_entry->proc_fops = &ccio_proc_bitmap_fops;
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}
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ioc_count++;
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