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| ******************************************************************************/ |
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| /****************************************************************************** |
| ** FILE : tpm_mempool.h ** |
| ** ** |
| ** DESCRIPTION : This file tpm memory pool manager ** |
| ******************************************************************************/ |
| #ifndef _TPM_MEMPOOL_H |
| #define _TPM_MEMPOOL_H |
| |
| #include <linux/spinlock.h> |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef struct tpm_common_mempool tpm_common_mempool_t; |
| typedef struct tpm_common_mpool_hdr { |
| struct tpm_common_mpool_hdr *next; |
| tpm_common_mempool_t *pool; |
| uint32_t flags; |
| uint32_t magic; |
| } tpm_common_mpool_hdr_t; |
| |
| typedef struct { |
| uint32_t magic; |
| tpm_common_mempool_t *pool; |
| } tpm_common_mpool_ftr_t; |
| |
| struct tpm_common_mempool { |
| tpm_common_mpool_hdr_t *head; |
| tpm_common_mpool_hdr_t *tail; |
| uint32_t number_of_free_entries; |
| spinlock_t lock; |
| uint32_t data_size; /* size of data section in pool entry */ |
| uint32_t pool_entry_size; /* size of pool entry */ |
| /* parameters passed on init */ |
| uint32_t number_of_entries; |
| uint32_t entry_size; |
| uint8_t *mem; |
| }; |
| |
| void *tpm_common_mempool_alloc(tpm_common_mempool_t *pool); |
| void tpm_common_mempool_free(tpm_common_mempool_t *pool, void *mem); |
| tpm_common_mempool_t *tpm_common_mempool_get(void *mem); |
| tpm_common_mempool_t *tpm_common_mempool_create(uint32_t number_of_entries, uint32_t entry_size, |
| int32_t priority); |
| void tpm_common_mempool_destroy(tpm_common_mempool_t *pool); |
| int32_t tpm_common_mempool_get_number_of_free_entries(tpm_common_mempool_t *pool); |
| int32_t tpm_common_mempool_get_number_of_entries(tpm_common_mempool_t *pool); |
| int32_t tpm_common_mempool_get_entry_size(tpm_common_mempool_t *pool); |
| |
| #define TPM_COMMON_MPOOL_HDR_FLAGS_ALLOCATED 0x00000001 |
| #define TPM_COMMON_MPOOL_HDR_MAGIC 0xa5a5a508 |
| #define TPM_COMMON_MPOOL_FTR_MAGIC 0xa5a5a509 |
| #define TPM_COMMON_MPOOL_ALIGN4(size) ((size)+4) & 0xFFFFFFFC; |
| #define TPM_COMMON_MPOOL_CHECK_ALIGNED4(ptr) ((((uint32_t)(ptr)) & 0x00000003) == 0) |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif /* _TPM_MEMPOOL_H */ |