git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| a00736e9 SR |
1 | #ifndef _SPARC64_LDC_H |
| 2 | #define _SPARC64_LDC_H | |
| 3 | ||
| 4 | #include <asm/hypervisor.h> | |
| 5 | ||
| 6 | extern int ldom_domaining_enabled; | |
| 7 | extern void ldom_set_var(const char *var, const char *value); | |
| 8 | extern void ldom_reboot(const char *boot_command); | |
| 9 | extern void ldom_power_off(void); | |
| 10 | ||
| 11 | /* The event handler will be evoked when link state changes | |
| 12 | * or data becomes available on the receive side. | |
| 13 | * | |
| 14 | * For non-RAW links, if the LDC_EVENT_RESET event arrives the | |
| 15 | * driver should reset all of it's internal state and reinvoke | |
| 16 | * ldc_connect() to try and bring the link up again. | |
| 17 | * | |
| 18 | * For RAW links, ldc_connect() is not used. Instead the driver | |
| 19 | * just waits for the LDC_EVENT_UP event. | |
| 20 | */ | |
| 21 | struct ldc_channel_config { | |
| 22 | void (*event)(void *arg, int event); | |
| 23 | ||
| 24 | u32 mtu; | |
| 25 | unsigned int rx_irq; | |
| 26 | unsigned int tx_irq; | |
| 27 | u8 mode; | |
| 28 | #define LDC_MODE_RAW 0x00 | |
| 29 | #define LDC_MODE_UNRELIABLE 0x01 | |
| 30 | #define LDC_MODE_RESERVED 0x02 | |
| 31 | #define LDC_MODE_STREAM 0x03 | |
| 32 | ||
| 33 | u8 debug; | |
| 34 | #define LDC_DEBUG_HS 0x01 | |
| 35 | #define LDC_DEBUG_STATE 0x02 | |
| 36 | #define LDC_DEBUG_RX 0x04 | |
| 37 | #define LDC_DEBUG_TX 0x08 | |
| 38 | #define LDC_DEBUG_DATA 0x10 | |
| 39 | }; | |
| 40 | ||
| 41 | #define LDC_EVENT_RESET 0x01 | |
| 42 | #define LDC_EVENT_UP 0x02 | |
| 43 | #define LDC_EVENT_DATA_READY 0x04 | |
| 44 | ||
| 45 | #define LDC_STATE_INVALID 0x00 | |
| 46 | #define LDC_STATE_INIT 0x01 | |
| 47 | #define LDC_STATE_BOUND 0x02 | |
| 48 | #define LDC_STATE_READY 0x03 | |
| 49 | #define LDC_STATE_CONNECTED 0x04 | |
| 50 | ||
| 51 | struct ldc_channel; | |
| 52 | ||
| 53 | /* Allocate state for a channel. */ | |
| 54 | extern struct ldc_channel *ldc_alloc(unsigned long id, | |
| 55 | const struct ldc_channel_config *cfgp, | |
| 56 | void *event_arg); | |
| 57 | ||
| 58 | /* Shut down and free state for a channel. */ | |
| 59 | extern void ldc_free(struct ldc_channel *lp); | |
| 60 | ||
| 61 | /* Register TX and RX queues of the link with the hypervisor. */ | |
| 62 | extern int ldc_bind(struct ldc_channel *lp, const char *name); | |
| 63 | ||
| 64 | /* For non-RAW protocols we need to complete a handshake before | |
| 65 | * communication can proceed. ldc_connect() does that, if the | |
| 66 | * handshake completes successfully, an LDC_EVENT_UP event will | |
| 67 | * be sent up to the driver. | |
| 68 | */ | |
| 69 | extern int ldc_connect(struct ldc_channel *lp); | |
| 70 | extern int ldc_disconnect(struct ldc_channel *lp); | |
| 71 | ||
| 72 | extern int ldc_state(struct ldc_channel *lp); | |
| 73 | ||
| 74 | /* Read and write operations. Only valid when the link is up. */ | |
| 75 | extern int ldc_write(struct ldc_channel *lp, const void *buf, | |
| 76 | unsigned int size); | |
| 77 | extern int ldc_read(struct ldc_channel *lp, void *buf, unsigned int size); | |
| 78 | ||
| 79 | #define LDC_MAP_SHADOW 0x01 | |
| 80 | #define LDC_MAP_DIRECT 0x02 | |
| 81 | #define LDC_MAP_IO 0x04 | |
| 82 | #define LDC_MAP_R 0x08 | |
| 83 | #define LDC_MAP_W 0x10 | |
| 84 | #define LDC_MAP_X 0x20 | |
| 85 | #define LDC_MAP_RW (LDC_MAP_R | LDC_MAP_W) | |
| 86 | #define LDC_MAP_RWX (LDC_MAP_R | LDC_MAP_W | LDC_MAP_X) | |
| 87 | #define LDC_MAP_ALL 0x03f | |
| 88 | ||
| 89 | struct ldc_trans_cookie { | |
| 90 | u64 cookie_addr; | |
| 91 | u64 cookie_size; | |
| 92 | }; | |
| 93 | ||
| 94 | struct scatterlist; | |
| 95 | extern int ldc_map_sg(struct ldc_channel *lp, | |
| 96 | struct scatterlist *sg, int num_sg, | |
| 97 | struct ldc_trans_cookie *cookies, int ncookies, | |
| 98 | unsigned int map_perm); | |
| 99 | ||
| 100 | extern int ldc_map_single(struct ldc_channel *lp, | |
| 101 | void *buf, unsigned int len, | |
| 102 | struct ldc_trans_cookie *cookies, int ncookies, | |
| 103 | unsigned int map_perm); | |
| 104 | ||
| 105 | extern void ldc_unmap(struct ldc_channel *lp, struct ldc_trans_cookie *cookies, | |
| 106 | int ncookies); | |
| 107 | ||
| 108 | extern int ldc_copy(struct ldc_channel *lp, int copy_dir, | |
| 109 | void *buf, unsigned int len, unsigned long offset, | |
| 110 | struct ldc_trans_cookie *cookies, int ncookies); | |
| 111 | ||
| 112 | static inline int ldc_get_dring_entry(struct ldc_channel *lp, | |
| 113 | void *buf, unsigned int len, | |
| 114 | unsigned long offset, | |
| 115 | struct ldc_trans_cookie *cookies, | |
| 116 | int ncookies) | |
| 117 | { | |
| 118 | return ldc_copy(lp, LDC_COPY_IN, buf, len, offset, cookies, ncookies); | |
| 119 | } | |
| 120 | ||
| 121 | static inline int ldc_put_dring_entry(struct ldc_channel *lp, | |
| 122 | void *buf, unsigned int len, | |
| 123 | unsigned long offset, | |
| 124 | struct ldc_trans_cookie *cookies, | |
| 125 | int ncookies) | |
| 126 | { | |
| 127 | return ldc_copy(lp, LDC_COPY_OUT, buf, len, offset, cookies, ncookies); | |
| 128 | } | |
| 129 | ||
| 130 | extern void *ldc_alloc_exp_dring(struct ldc_channel *lp, unsigned int len, | |
| 131 | struct ldc_trans_cookie *cookies, | |
| 132 | int *ncookies, unsigned int map_perm); | |
| 133 | ||
| 134 | extern void ldc_free_exp_dring(struct ldc_channel *lp, void *buf, | |
| 135 | unsigned int len, | |
| 136 | struct ldc_trans_cookie *cookies, int ncookies); | |
| 137 | ||
| 138 | #endif /* _SPARC64_LDC_H */ |