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path: root/drivers/parisc/ccio-dma.c
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Diffstat (limited to 'drivers/parisc/ccio-dma.c')
-rw-r--r--drivers/parisc/ccio-dma.c328
1 files changed, 155 insertions, 173 deletions
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 9e0229f7e25..8b490d77054 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -31,8 +31,8 @@
** the coherency design originally worked out. Only PCX-W does.
*/
-#include <linux/config.h>
#include <linux/types.h>
+#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/spinlock.h>
@@ -40,6 +40,11 @@
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/reboot.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/scatterlist.h>
+#include <linux/iommu-helper.h>
+#include <linux/export.h>
#include <asm/byteorder.h>
#include <asm/cache.h> /* for L1_CACHE_BYTES */
@@ -62,18 +67,10 @@
#undef DEBUG_CCIO_RUN_SG
#ifdef CONFIG_PROC_FS
-/*
- * CCIO_SEARCH_TIME can help measure how fast the bitmap search is.
- * impacts performance though - ditch it if you don't use it.
- */
-#define CCIO_SEARCH_TIME
-#undef CCIO_MAP_STATS
-#else
-#undef CCIO_SEARCH_TIME
-#undef CCIO_MAP_STATS
+/* depends on proc fs support. But costs CPU performance. */
+#undef CCIO_COLLECT_STATS
#endif
-#include <linux/proc_fs.h>
#include <asm/runway.h> /* for proc_runway_root */
#ifdef DEBUG_CCIO_INIT
@@ -235,12 +232,10 @@ struct ioc {
u32 res_size; /* size of resource map in bytes */
spinlock_t res_lock;
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
#define CCIO_SEARCH_SAMPLE 0x100
unsigned long avg_search[CCIO_SEARCH_SAMPLE];
unsigned long avg_idx; /* current index into avg_search */
-#endif
-#ifdef CCIO_MAP_STATS
unsigned long used_pages;
unsigned long msingle_calls;
unsigned long msingle_pages;
@@ -291,7 +286,6 @@ static int ioc_count;
#define PDIR_INDEX(iovp) ((iovp)>>IOVP_SHIFT)
#define MKIOVP(pdir_idx) ((long)(pdir_idx) << IOVP_SHIFT)
#define MKIOVA(iovp,offset) (dma_addr_t)((long)iovp | (long)offset)
-#define ROUNDUP(x,y) ((x + ((y)-1)) & ~((y)-1))
/*
** Don't worry about the 150% average search length on a miss.
@@ -300,13 +294,17 @@ static int ioc_count;
*/
#define CCIO_SEARCH_LOOP(ioc, res_idx, mask, size) \
for(; res_ptr < res_end; ++res_ptr) { \
- if(0 == (*res_ptr & mask)) { \
- *res_ptr |= mask; \
- res_idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \
- ioc->res_hint = res_idx + (size >> 3); \
- goto resource_found; \
- } \
- }
+ int ret;\
+ unsigned int idx;\
+ idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \
+ ret = iommu_is_span_boundary(idx << 3, pages_needed, 0, boundary_size);\
+ if ((0 == (*res_ptr & mask)) && !ret) { \
+ *res_ptr |= mask; \
+ res_idx = idx;\
+ ioc->res_hint = res_idx + (size >> 3); \
+ goto resource_found; \
+ } \
+ }
#define CCIO_FIND_FREE_MAPPING(ioa, res_idx, mask, size) \
u##size *res_ptr = (u##size *)&((ioc)->res_map[ioa->res_hint & ~((size >> 3) - 1)]); \
@@ -339,11 +337,12 @@ static int ioc_count;
* of available pages for the requested size.
*/
static int
-ccio_alloc_range(struct ioc *ioc, size_t size)
+ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
{
unsigned int pages_needed = size >> IOVP_SHIFT;
unsigned int res_idx;
-#ifdef CCIO_SEARCH_TIME
+ unsigned long boundary_size;
+#ifdef CCIO_COLLECT_STATS
unsigned long cr_start = mfctl(16);
#endif
@@ -351,17 +350,20 @@ ccio_alloc_range(struct ioc *ioc, size_t size)
BUG_ON((pages_needed * IOVP_SIZE) > DMA_CHUNK_SIZE);
DBG_RES("%s() size: %d pages_needed %d\n",
- __FUNCTION__, size, pages_needed);
+ __func__, size, pages_needed);
/*
** "seek and ye shall find"...praying never hurts either...
** ggg sacrifices another 710 to the computer gods.
*/
+ boundary_size = ALIGN((unsigned long long)dma_get_seg_boundary(dev) + 1,
+ 1ULL << IOVP_SHIFT) >> IOVP_SHIFT;
+
if (pages_needed <= 8) {
/*
* LAN traffic will not thrash the TLB IFF the same NIC
- * uses 8 adjacent pages to map seperate payload data.
+ * uses 8 adjacent pages to map separate payload data.
* ie the same byte in the resource bit map.
*/
#if 0
@@ -384,18 +386,18 @@ ccio_alloc_range(struct ioc *ioc, size_t size)
#endif
} else {
panic("%s: %s() Too many pages to map. pages_needed: %u\n",
- __FILE__, __FUNCTION__, pages_needed);
+ __FILE__, __func__, pages_needed);
}
panic("%s: %s() I/O MMU is out of mapping resources.\n", __FILE__,
- __FUNCTION__);
+ __func__);
resource_found:
DBG_RES("%s() res_idx %d res_hint: %d\n",
- __FUNCTION__, res_idx, ioc->res_hint);
+ __func__, res_idx, ioc->res_hint);
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
{
unsigned long cr_end = mfctl(16);
unsigned long tmp = cr_end - cr_start;
@@ -404,8 +406,6 @@ resource_found:
}
ioc->avg_search[ioc->avg_idx++] = cr_start;
ioc->avg_idx &= CCIO_SEARCH_SAMPLE - 1;
-#endif
-#ifdef CCIO_MAP_STATS
ioc->used_pages += pages_needed;
#endif
/*
@@ -439,9 +439,9 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
BUG_ON(pages_mapped > BITS_PER_LONG);
DBG_RES("%s(): res_idx: %d pages_mapped %d\n",
- __FUNCTION__, res_idx, pages_mapped);
+ __func__, res_idx, pages_mapped);
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
ioc->used_pages -= pages_mapped;
#endif
@@ -451,10 +451,10 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
unsigned long mask = ~(~0UL >> pages_mapped);
CCIO_FREE_MAPPINGS(ioc, res_idx, mask, 8);
#else
- CCIO_FREE_MAPPINGS(ioc, res_idx, 0xff, 8);
+ CCIO_FREE_MAPPINGS(ioc, res_idx, 0xffUL, 8);
#endif
} else if(pages_mapped <= 16) {
- CCIO_FREE_MAPPINGS(ioc, res_idx, 0xffff, 16);
+ CCIO_FREE_MAPPINGS(ioc, res_idx, 0xffffUL, 16);
} else if(pages_mapped <= 32) {
CCIO_FREE_MAPPINGS(ioc, res_idx, ~(unsigned int)0, 32);
#ifdef __LP64__
@@ -463,7 +463,7 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
#endif
} else {
panic("%s:%s() Too many pages to unmap.\n", __FILE__,
- __FUNCTION__);
+ __func__);
}
}
@@ -485,7 +485,7 @@ typedef unsigned long space_t;
** This bit tells U2 to do R/M/W for partial cachelines. "Streaming"
** data can avoid this if the mapping covers full cache lines.
** o STOP_MOST is needed for atomicity across cachelines.
-** Apperently only "some EISA devices" need this.
+** Apparently only "some EISA devices" need this.
** Using CONFIG_ISA is hack. Only the IOA with EISA under it needs
** to use this hint iff the EISA devices needs this feature.
** According to the U2 ERS, STOP_MOST enabled pages hurt performance.
@@ -553,7 +553,7 @@ static u32 hint_lookup[] = {
* (Load Coherence Index) instruction. The 8 bits used for the virtual
* index are bits 12:19 of the value returned by LCI.
*/
-void CCIO_INLINE
+static void CCIO_INLINE
ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba,
unsigned long hints)
{
@@ -651,7 +651,7 @@ ccio_clear_io_tlb(struct ioc *ioc, dma_addr_t iovp, size_t byte_cnt)
* Mark the I/O Pdir entries invalid and blow away the corresponding I/O
* TLB entries.
*
- * FIXME: at some threshhold it might be "cheaper" to just blow
+ * FIXME: at some threshold it might be "cheaper" to just blow
* away the entire I/O TLB instead of individual entries.
*
* FIXME: Uturn has 256 TLB entries. We don't need to purge every
@@ -667,7 +667,7 @@ ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt)
size_t saved_byte_cnt;
/* round up to nearest page size */
- saved_byte_cnt = byte_cnt = ROUNDUP(byte_cnt, IOVP_SIZE);
+ saved_byte_cnt = byte_cnt = ALIGN(byte_cnt, IOVP_SIZE);
while(byte_cnt > 0) {
/* invalidate one page at a time */
@@ -750,21 +750,21 @@ ccio_map_single(struct device *dev, void *addr, size_t size,
offset = ((unsigned long) addr) & ~IOVP_MASK;
/* round up to nearest IOVP_SIZE */
- size = ROUNDUP(size + offset, IOVP_SIZE);
+ size = ALIGN(size + offset, IOVP_SIZE);
spin_lock_irqsave(&ioc->res_lock, flags);
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
ioc->msingle_calls++;
ioc->msingle_pages += size >> IOVP_SHIFT;
#endif
- idx = ccio_alloc_range(ioc, size);
+ idx = ccio_alloc_range(ioc, dev, size);
iovp = (dma_addr_t)MKIOVP(idx);
pdir_start = &(ioc->pdir_base[idx]);
DBG_RUN("%s() 0x%p -> 0x%lx size: %0x%x\n",
- __FUNCTION__, addr, (long)iovp | offset, size);
+ __func__, addr, (long)iovp | offset, size);
/* If not cacheline aligned, force SAFE_DMA on the whole mess */
if((size % L1_CACHE_BYTES) || ((unsigned long)addr % L1_CACHE_BYTES))
@@ -809,15 +809,15 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size,
ioc = GET_IOC(dev);
DBG_RUN("%s() iovp 0x%lx/%x\n",
- __FUNCTION__, (long)iova, size);
+ __func__, (long)iova, size);
iova ^= offset; /* clear offset bits */
size += offset;
- size = ROUNDUP(size, IOVP_SIZE);
+ size = ALIGN(size, IOVP_SIZE);
spin_lock_irqsave(&ioc->res_lock, flags);
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
ioc->usingle_calls++;
ioc->usingle_pages += size >> IOVP_SHIFT;
#endif
@@ -883,7 +883,7 @@ ccio_free_consistent(struct device *dev, size_t size, void *cpu_addr,
*/
#define PIDE_FLAG 0x80000000UL
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
#define IOMMU_MAP_STATS
#endif
#include "iommu-helpers.h"
@@ -911,7 +911,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
BUG_ON(!dev);
ioc = GET_IOC(dev);
- DBG_RUN_SG("%s() START %d entries\n", __FUNCTION__, nents);
+ DBG_RUN_SG("%s() START %d entries\n", __func__, nents);
/* Fast path single entry scatterlists. */
if (nents == 1) {
@@ -927,7 +927,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
spin_lock_irqsave(&ioc->res_lock, flags);
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
ioc->msg_calls++;
#endif
@@ -939,7 +939,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
** w/o this association, we wouldn't have coherent DMA!
** Access to the virtual address is what forces a two pass algorithm.
*/
- coalesced = iommu_coalesce_chunks(ioc, sglist, nents, ccio_alloc_range);
+ coalesced = iommu_coalesce_chunks(ioc, dev, sglist, nents, ccio_alloc_range);
/*
** Program the I/O Pdir
@@ -955,7 +955,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
BUG_ON(coalesced != filled);
- DBG_RUN_SG("%s() DONE %d mappings\n", __FUNCTION__, filled);
+ DBG_RUN_SG("%s() DONE %d mappings\n", __func__, filled);
for (i = 0; i < filled; i++)
current_len += sg_dma_len(sglist + i);
@@ -984,15 +984,15 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
ioc = GET_IOC(dev);
DBG_RUN_SG("%s() START %d entries, %08lx,%x\n",
- __FUNCTION__, nents, sg_virt_addr(sglist), sglist->length);
+ __func__, nents, sg_virt_addr(sglist), sglist->length);
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
ioc->usg_calls++;
#endif
while(sg_dma_len(sglist) && nents--) {
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
ioc->usg_pages += sg_dma_len(sglist) >> PAGE_SHIFT;
#endif
ccio_unmap_single(dev, sg_dma_address(sglist),
@@ -1000,7 +1000,7 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
++sglist;
}
- DBG_RUN_SG("%s() DONE (nents %d)\n", __FUNCTION__, nents);
+ DBG_RUN_SG("%s() DONE (nents %d)\n", __func__, nents);
}
static struct hppa_dma_ops ccio_ops = {
@@ -1019,63 +1019,36 @@ 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;
+#ifdef CCIO_COLLECT_STATS
unsigned long avg = 0, min, max;
- int j, len;
+ int j;
+#endif
- 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",
- (ioc->cujo20_bug ? "yes" : "no"));
- if (proc_append(tmp, len, &buf, &offset, &count))
- break;
+ len += seq_printf(m, "Cujo 2.0 bug : %s\n",
+ (ioc->cujo20_bug ? "yes" : "no"));
- len = sprintf(tmp, "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",
- total_pages - ioc->used_pages, ioc->used_pages,
- (int)(ioc->used_pages * 100 / total_pages));
- if (proc_append(tmp, len, &buf, &offset, &count))
- break;
+ len += seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n",
+ total_pages * 8, total_pages);
+
+#ifdef CCIO_COLLECT_STATS
+ 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));
#endif
- len = sprintf(tmp, "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
+
+ len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n",
+ ioc->res_size, total_pages);
+
+#ifdef CCIO_COLLECT_STATS
min = max = ioc->avg_search[0];
for(j = 0; j < CCIO_SEARCH_SAMPLE; ++j) {
avg += ioc->avg_search[j];
@@ -1085,71 +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",
- 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",
- ioc->msingle_calls, ioc->msingle_pages,
- (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls));
- if (proc_append(tmp, len, &buf, &offset, &count))
- break;
-
+ len += seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
+ min, avg, max);
+
+ 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));
/* 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",
- min, max, (int)((max * 1000)/min));
- if (proc_append(tmp, len, &buf, &offset, &count))
- break;
+ len += seq_printf(m, "pci_unmap_single: %8ld calls %8ld pages (avg %d/1000)\n",
+ min, max, (int)((max * 1000)/min));
- len = sprintf(tmp, "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",
- 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 */
+ 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));
+
+ 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));
+#endif /* CCIO_COLLECT_STATS */
+
ioc = ioc->next;
}
- if (count == 0) {
- *eof = 1;
- }
- return (max - count);
+ return 0;
+}
+
+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 const 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;
}
-#endif
+
+static int ccio_proc_bitmap_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, &ccio_proc_bitmap_info, NULL);
+}
+
+static const 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 /* CONFIG_PROC_FS */
/**
* ccio_find_ioc - Find the ioc in the ioc_list
@@ -1230,7 +1215,7 @@ static int
ccio_get_iotlb_size(struct parisc_device *dev)
{
if (dev->spa_shift == 0) {
- panic("%s() : Can't determine I/O TLB size.\n", __FUNCTION__);
+ panic("%s() : Can't determine I/O TLB size.\n", __func__);
}
return (1 << dev->spa_shift);
}
@@ -1242,7 +1227,7 @@ ccio_get_iotlb_size(struct parisc_device *dev)
#endif /* 0 */
/* We *can't* support JAVA (T600). Venture there at your own risk. */
-static struct parisc_device_id ccio_tbl[] = {
+static const struct parisc_device_id ccio_tbl[] = {
{ HPHW_IOA, HVERSION_REV_ANY_ID, U2_IOA_RUNWAY, 0xb }, /* U2 */
{ HPHW_IOA, HVERSION_REV_ANY_ID, UTURN_IOA_RUNWAY, 0xb }, /* UTurn */
{ 0, }
@@ -1257,10 +1242,10 @@ static struct parisc_driver ccio_driver = {
};
/**
- * ccio_ioc_init - Initalize the I/O Controller
+ * ccio_ioc_init - Initialize the I/O Controller
* @ioc: The I/O Controller.
*
- * Initalize the I/O Controller which includes setting up the
+ * Initialize the I/O Controller which includes setting up the
* I/O Page Directory, the resource map, and initalizing the
* U2/Uturn chip into virtual mode.
*/
@@ -1282,7 +1267,7 @@ ccio_ioc_init(struct ioc *ioc)
** Hot-Plug/Removal of PCI cards. (aka PCI OLARD).
*/
- iova_space_size = (u32) (num_physpages / count_parisc_driver(&ccio_driver));
+ iova_space_size = (u32) (totalram_pages / count_parisc_driver(&ccio_driver));
/* limit IOVA space size to 1MB-1GB */
@@ -1320,15 +1305,15 @@ ccio_ioc_init(struct ioc *ioc)
BUG_ON((1 << get_order(ioc->pdir_size)) != (ioc->pdir_size >> PAGE_SHIFT));
DBG_INIT("%s() hpa 0x%p mem %luMB IOV %dMB (%d bits)\n",
- __FUNCTION__, ioc->ioc_regs,
- (unsigned long) num_physpages >> (20 - PAGE_SHIFT),
+ __func__, ioc->ioc_regs,
+ (unsigned long) totalram_pages >> (20 - PAGE_SHIFT),
iova_space_size>>20,
iov_order + PAGE_SHIFT);
ioc->pdir_base = (u64 *)__get_free_pages(GFP_KERNEL,
get_order(ioc->pdir_size));
if(NULL == ioc->pdir_base) {
- panic("%s() could not allocate I/O Page Table\n", __FUNCTION__);
+ panic("%s() could not allocate I/O Page Table\n", __func__);
}
memset(ioc->pdir_base, 0, ioc->pdir_size);
@@ -1337,12 +1322,12 @@ ccio_ioc_init(struct ioc *ioc)
/* resource map size dictated by pdir_size */
ioc->res_size = (ioc->pdir_size / sizeof(u64)) >> 3;
- DBG_INIT("%s() res_size 0x%x\n", __FUNCTION__, ioc->res_size);
+ DBG_INIT("%s() res_size 0x%x\n", __func__, ioc->res_size);
ioc->res_map = (u8 *)__get_free_pages(GFP_KERNEL,
get_order(ioc->res_size));
if(NULL == ioc->res_map) {
- panic("%s() could not allocate resource map\n", __FUNCTION__);
+ panic("%s() could not allocate resource map\n", __func__);
}
memset(ioc->res_map, 0, ioc->res_size);
@@ -1385,7 +1370,7 @@ ccio_ioc_init(struct ioc *ioc)
}
}
-static void
+static void __init
ccio_init_resource(struct resource *res, char *name, void __iomem *ioaddr)
{
int result;
@@ -1414,7 +1399,7 @@ ccio_init_resource(struct resource *res, char *name, void __iomem *ioaddr)
result = insert_resource(&iomem_resource, res);
if (result < 0) {
printk(KERN_ERR "%s() failed to claim CCIO bus address space (%08lx,%08lx)\n",
- __FUNCTION__, res->start, res->end);
+ __func__, (unsigned long)res->start, (unsigned long)res->end);
}
}
@@ -1423,7 +1408,7 @@ static void __init ccio_init_resources(struct ioc *ioc)
struct resource *res = ioc->mmio_region;
char *name = kmalloc(14, GFP_KERNEL);
- sprintf(name, "GSC Bus [%d/]", ioc->hw_path);
+ snprintf(name, 14, "GSC Bus [%d/]", ioc->hw_path);
ccio_init_resource(res, name, &ioc->ioc_regs->io_io_low);
ccio_init_resource(res + 1, name, &ioc->ioc_regs->io_io_low_hv);
@@ -1552,21 +1537,21 @@ int ccio_request_resource(const struct parisc_device *dev,
* If so, initialize the chip and tell other partners in crime they
* have work to do.
*/
-static int ccio_probe(struct parisc_device *dev)
+static int __init ccio_probe(struct parisc_device *dev)
{
int i;
struct ioc *ioc, **ioc_p = &ioc_list;
-
- ioc = kmalloc(sizeof(struct ioc), GFP_KERNEL);
+
+ ioc = kzalloc(sizeof(struct ioc), GFP_KERNEL);
if (ioc == NULL) {
printk(KERN_ERR MODULE_NAME ": memory allocation failure\n");
return 1;
}
- memset(ioc, 0, sizeof(struct ioc));
ioc->name = dev->id.hversion == U2_IOA_RUNWAY ? "U2" : "UTurn";
- printk(KERN_INFO "Found %s at 0x%lx\n", ioc->name, dev->hpa.start);
+ printk(KERN_INFO "Found %s at 0x%lx\n", ioc->name,
+ (unsigned long)dev->hpa.start);
for (i = 0; i < ioc_count; i++) {
ioc_p = &(*ioc_p)->next;
@@ -1574,35 +1559,32 @@ static int ccio_probe(struct parisc_device *dev)
*ioc_p = ioc;
ioc->hw_path = dev->hw_path;
- ioc->ioc_regs = ioremap(dev->hpa.start, 4096);
+ ioc->ioc_regs = ioremap_nocache(dev->hpa.start, 4096);
ccio_ioc_init(ioc);
ccio_init_resources(ioc);
hppa_dma_ops = &ccio_ops;
- dev->dev.platform_data = kmalloc(sizeof(struct pci_hba_data), GFP_KERNEL);
+ dev->dev.platform_data = kzalloc(sizeof(struct pci_hba_data), GFP_KERNEL);
/* if this fails, no I/O cards will work, so may as well bug */
BUG_ON(dev->dev.platform_data == NULL);
HBA_DATA(dev->dev.platform_data)->iommu = ioc;
-
+#ifdef CONFIG_PROC_FS
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);
+ proc_create(MODULE_NAME, 0, proc_runway_root,
+ &ccio_proc_info_fops);
+ proc_create(MODULE_NAME"-bitmap", 0, proc_runway_root,
+ &ccio_proc_bitmap_fops);
}
-
+#endif
ioc_count++;
- parisc_vmerge_boundary = IOVP_SIZE;
- parisc_vmerge_max_size = BITS_PER_LONG * IOVP_SIZE;
parisc_has_iommu();
return 0;
}
/**
- * ccio_init - ccio initalization procedure.
+ * ccio_init - ccio initialization procedure.
*
* Register this driver.
*/
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 22:02:10 +0000