ALSA: ctxfi - fix PTP address initialization
After hours of debugging, I finally found the reason why some source
and runtime combination does not work. The PTP (page table pages)
address must be aligned. I am not sure how much, but alignment to
PAGE_SIZE is sufficient. Also, use ALSA's page allocation routines
to ensure proper virtual -> physical address translation.
Cc: <stable@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/ctxfi/ctvmem.h b/sound/pci/ctxfi/ctvmem.h
index 01e4fd0..b23adfc 100644
--- a/sound/pci/ctxfi/ctvmem.h
+++ b/sound/pci/ctxfi/ctvmem.h
@@ -22,6 +22,8 @@
#include <linux/mutex.h>
#include <linux/list.h>
+#include <linux/pci.h>
+#include <sound/memalloc.h>
/* The chip can handle the page table of 4k pages
* (emu20k1 can handle even 8k pages, but we don't use it right now)
@@ -41,7 +43,7 @@
/* Virtual memory management object for card device */
struct ct_vm {
- void *ptp[CT_PTP_NUM]; /* Device page table pages */
+ struct snd_dma_buffer ptp[CT_PTP_NUM]; /* Device page table pages */
unsigned int size; /* Available addr space in bytes */
struct list_head unused; /* List of unused blocks */
struct list_head used; /* List of used blocks */
@@ -52,10 +54,10 @@
int size);
/* Unmap device logical addr area. */
void (*unmap)(struct ct_vm *, struct ct_vm_block *block);
- void *(*get_ptp_virt)(struct ct_vm *vm, int index);
+ dma_addr_t (*get_ptp_phys)(struct ct_vm *vm, int index);
};
-int ct_vm_create(struct ct_vm **rvm);
+int ct_vm_create(struct ct_vm **rvm, struct pci_dev *pci);
void ct_vm_destroy(struct ct_vm *vm);
#endif /* CTVMEM_H */