diff options
Diffstat (limited to 'sound/pci/ctxfi/ctvmem.h')
| -rw-r--r-- | sound/pci/ctxfi/ctvmem.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/sound/pci/ctxfi/ctvmem.h b/sound/pci/ctxfi/ctvmem.h index 4eb5bdd5cad..01e4fd0386a 100644 --- a/sound/pci/ctxfi/ctvmem.h +++ b/sound/pci/ctxfi/ctvmem.h @@ -20,24 +20,36 @@ #define CT_PTP_NUM 1 /* num of device page table pages */ -#include <linux/spinlock.h> +#include <linux/mutex.h> #include <linux/list.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) + */ +#define CT_PAGE_SIZE 4096 +#define CT_PAGE_SHIFT 12 +#define CT_PAGE_MASK (~(PAGE_SIZE - 1)) +#define CT_PAGE_ALIGN(addr) ALIGN(addr, CT_PAGE_SIZE) + struct ct_vm_block { unsigned int addr; /* starting logical addr of this block */ unsigned int size; /* size of this device virtual mem block */ struct list_head list; }; +struct snd_pcm_substream; + /* Virtual memory management object for card device */ struct ct_vm { void *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 */ + struct mutex lock; /* Map host addr (kmalloced/vmalloced) to device logical addr. */ - struct ct_vm_block *(*map)(struct ct_vm *, void *host_addr, int size); + struct ct_vm_block *(*map)(struct ct_vm *, struct snd_pcm_substream *, + 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); |