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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.c78
1 files changed, 34 insertions, 44 deletions
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index b30e38f3a50..8b490d77054 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -44,6 +44,7 @@
#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 */
@@ -66,18 +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
@@ -239,12 +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;
@@ -351,7 +342,7 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
unsigned int pages_needed = size >> IOVP_SHIFT;
unsigned int res_idx;
unsigned long boundary_size;
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
unsigned long cr_start = mfctl(16);
#endif
@@ -406,7 +397,7 @@ resource_found:
DBG_RES("%s() res_idx %d res_hint: %d\n",
__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;
@@ -415,8 +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
/*
@@ -452,7 +441,7 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped)
DBG_RES("%s(): res_idx: %d pages_mapped %d\n",
__func__, res_idx, pages_mapped);
-#ifdef CCIO_MAP_STATS
+#ifdef CCIO_COLLECT_STATS
ioc->used_pages -= pages_mapped;
#endif
@@ -462,10 +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__
@@ -564,7 +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)
{
@@ -662,7 +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
@@ -764,7 +753,7 @@ ccio_map_single(struct device *dev, void *addr, size_t 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
@@ -828,7 +817,7 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t 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
@@ -894,7 +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"
@@ -938,7 +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
@@ -997,13 +986,13 @@ ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents,
DBG_RUN_SG("%s() START %d entries, %08lx,%x\n",
__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),
@@ -1037,8 +1026,10 @@ static int ccio_proc_info(struct seq_file *m, void *p)
while (ioc != NULL) {
unsigned int total_pages = ioc->res_size << 3;
+#ifdef CCIO_COLLECT_STATS
unsigned long avg = 0, min, max;
int j;
+#endif
len += seq_printf(m, "%s\n", ioc->name);
@@ -1048,7 +1039,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
len += seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n",
total_pages * 8, total_pages);
-#ifdef CCIO_MAP_STATS
+#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));
@@ -1057,7 +1048,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n",
ioc->res_size, total_pages);
-#ifdef CCIO_SEARCH_TIME
+#ifdef CCIO_COLLECT_STATS
min = max = ioc->avg_search[0];
for(j = 0; j < CCIO_SEARCH_SAMPLE; ++j) {
avg += ioc->avg_search[j];
@@ -1069,8 +1060,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
avg /= CCIO_SEARCH_SAMPLE;
len += seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n",
min, avg, max);
-#endif
-#ifdef CCIO_MAP_STATS
+
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));
@@ -1088,7 +1078,7 @@ static int ccio_proc_info(struct seq_file *m, void *p)
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_MAP_STATS */
+#endif /* CCIO_COLLECT_STATS */
ioc = ioc->next;
}
@@ -1144,7 +1134,7 @@ static const struct file_operations ccio_proc_bitmap_fops = {
.llseek = seq_lseek,
.release = single_release,
};
-#endif
+#endif /* CONFIG_PROC_FS */
/**
* ccio_find_ioc - Find the ioc in the ioc_list
@@ -1252,10 +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.
*/
@@ -1277,7 +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 */
@@ -1316,7 +1306,7 @@ ccio_ioc_init(struct ioc *ioc)
DBG_INIT("%s() hpa 0x%p mem %luMB IOV %dMB (%d bits)\n",
__func__, ioc->ioc_regs,
- (unsigned long) num_physpages >> (20 - PAGE_SHIFT),
+ (unsigned long) totalram_pages >> (20 - PAGE_SHIFT),
iova_space_size>>20,
iov_order + PAGE_SHIFT);
@@ -1409,7 +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",
- __func__, res->start, res->end);
+ __func__, (unsigned long)res->start, (unsigned long)res->end);
}
}
@@ -1560,7 +1550,8 @@ static int __init ccio_probe(struct parisc_device *dev)
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;
@@ -1577,18 +1568,17 @@ static int __init ccio_probe(struct parisc_device *dev)
/* 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) {
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;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 19:13:30 +0000