#include "../xen-compat.h"\r
\r
#if __XEN_INTERFACE_VERSION__ < 0x00030208\r
-#define xen_mb() mb()\r
-#define xen_rmb() rmb()\r
-#define xen_wmb() wmb()\r
+#define xen_mb() mb()\r
+#define xen_rmb() rmb()\r
+#define xen_wmb() wmb()\r
#endif\r
\r
typedef UINT32 RING_IDX;\r
\r
/* Round a 32-bit unsigned constant down to the nearest power of two. */\r
-#define __RD2(_x) (((_x) & 0x00000002) ? 0x2 : ((_x) & 0x1))\r
-#define __RD4(_x) (((_x) & 0x0000000c) ? __RD2((_x)>>2)<<2 : __RD2(_x))\r
-#define __RD8(_x) (((_x) & 0x000000f0) ? __RD4((_x)>>4)<<4 : __RD4(_x))\r
-#define __RD16(_x) (((_x) & 0x0000ff00) ? __RD8((_x)>>8)<<8 : __RD8(_x))\r
-#define __RD32(_x) (((_x) & 0xffff0000) ? __RD16((_x)>>16)<<16 : __RD16(_x))\r
+#define __RD2(_x) (((_x) & 0x00000002) ? 0x2 : ((_x) & 0x1))\r
+#define __RD4(_x) (((_x) & 0x0000000c) ? __RD2((_x)>>2)<<2 : __RD2(_x))\r
+#define __RD8(_x) (((_x) & 0x000000f0) ? __RD4((_x)>>4)<<4 : __RD4(_x))\r
+#define __RD16(_x) (((_x) & 0x0000ff00) ? __RD8((_x)>>8)<<8 : __RD8(_x))\r
+#define __RD32(_x) (((_x) & 0xffff0000) ? __RD16((_x)>>16)<<16 : __RD16(_x))\r
\r
/*\r
* Calculate size of a shared ring, given the total available space for the\r
*/\r
#define __CONST_RING_SIZE(_s, _sz) \\r
(__RD32(((_sz) - offsetof(struct _s##_sring, ring)) / \\r
- sizeof(((struct _s##_sring *)0)->ring[0])))\r
+ sizeof(((struct _s##_sring *)0)->ring[0])))\r
+\r
/*\r
* The same for passing in an actual pointer instead of a name tag.\r
*/\r
\r
#define DEFINE_RING_TYPES(__name, __req_t, __rsp_t) \\r
\\r
-/* Shared ring entry */ \\r
+ /* Shared ring entry */ \\r
union __name##_sring_entry { \\r
__req_t req; \\r
__rsp_t rsp; \\r
}; \\r
\\r
-/* Shared ring page */ \\r
+ /* Shared ring page */ \\r
struct __name##_sring { \\r
RING_IDX req_prod, req_event; \\r
RING_IDX rsp_prod, rsp_event; \\r
union __name##_sring_entry ring[1]; /* variable-length */ \\r
}; \\r
\\r
-/* "Front" end's private variables */ \\r
+ /* "Front" end's private variables */ \\r
struct __name##_front_ring { \\r
RING_IDX req_prod_pvt; \\r
RING_IDX rsp_cons; \\r
struct __name##_sring *sring; \\r
}; \\r
\\r
-/* "Back" end's private variables */ \\r
+ /* "Back" end's private variables */ \\r
struct __name##_back_ring { \\r
RING_IDX rsp_prod_pvt; \\r
RING_IDX req_cons; \\r
struct __name##_sring *sring; \\r
}; \\r
\\r
-/* Syntactic sugar */ \\r
+ /* Syntactic sugar */ \\r
typedef struct __name##_sring __name##_sring_t; \\r
typedef struct __name##_front_ring __name##_front_ring_t; \\r
typedef struct __name##_back_ring __name##_back_ring_t\r
*/\r
\r
/* Initialising empty rings */\r
-#define SHARED_RING_INIT(_s) do { \\r
+#define SHARED_RING_INIT(_s) do { \\r
(_s)->req_prod = (_s)->rsp_prod = 0; \\r
(_s)->req_event = (_s)->rsp_event = 1; \\r
(VOID)ZeroMem((_s)->private.pvt_pad, sizeof((_s)->private.pvt_pad)); \\r
(VOID)ZeroMem((_s)->__pad, sizeof((_s)->__pad)); \\r
} while(0)\r
\r
-#define FRONT_RING_INIT(_r, _s, __size) do { \\r
+#define FRONT_RING_INIT(_r, _s, __size) do { \\r
(_r)->req_prod_pvt = 0; \\r
(_r)->rsp_cons = 0; \\r
(_r)->nr_ents = __RING_SIZE(_s, __size); \\r
(_r)->sring = (_s); \\r
} while (0)\r
\r
-#define BACK_RING_INIT(_r, _s, __size) do { \\r
+#define BACK_RING_INIT(_r, _s, __size) do { \\r
(_r)->rsp_prod_pvt = 0; \\r
(_r)->req_cons = 0; \\r
(_r)->nr_ents = __RING_SIZE(_s, __size); \\r
((_r)->sring->rsp_prod - (_r)->rsp_cons)\r
\r
#ifdef __GNUC__\r
-#define RING_HAS_UNCONSUMED_REQUESTS(_r) ({ \\r
+#define RING_HAS_UNCONSUMED_REQUESTS(_r) ({ \\r
UINT32 req = (_r)->sring->req_prod - (_r)->req_cons; \\r
UINT32 rsp = RING_SIZE(_r) - \\r
((_r)->req_cons - (_r)->rsp_prod_pvt); \\r
#define RING_REQUEST_PROD_OVERFLOW(_r, _prod) \\r
(((_prod) - (_r)->rsp_prod_pvt) > RING_SIZE(_r))\r
\r
-#define RING_PUSH_REQUESTS(_r) do { \\r
+#define RING_PUSH_REQUESTS(_r) do { \\r
xen_wmb(); /* back sees requests /before/ updated producer index */ \\r
(_r)->sring->req_prod = (_r)->req_prod_pvt; \\r
} while (0)\r
\r
-#define RING_PUSH_RESPONSES(_r) do { \\r
+#define RING_PUSH_RESPONSES(_r) do { \\r
xen_wmb(); /* front sees resps /before/ updated producer index */ \\r
(_r)->sring->rsp_prod = (_r)->rsp_prod_pvt; \\r
} while (0)\r
* field appropriately.\r
*/\r
\r
-#define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do { \\r
+#define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do { \\r
RING_IDX __old = (_r)->sring->req_prod; \\r
RING_IDX __new = (_r)->req_prod_pvt; \\r
xen_wmb(); /* back sees requests /before/ updated producer index */ \\r
(RING_IDX)(__new - __old)); \\r
} while (0)\r
\r
-#define RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(_r, _notify) do { \\r
+#define RING_PUSH_RESPONSES_AND_CHECK_NOTIFY(_r, _notify) do { \\r
RING_IDX __old = (_r)->sring->rsp_prod; \\r
RING_IDX __new = (_r)->rsp_prod_pvt; \\r
xen_wmb(); /* front sees resps /before/ updated producer index */ \\r
(RING_IDX)(__new - __old)); \\r
} while (0)\r
\r
-#define RING_FINAL_CHECK_FOR_REQUESTS(_r, _work_to_do) do { \\r
+#define RING_FINAL_CHECK_FOR_REQUESTS(_r, _work_to_do) do { \\r
(_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \\r
if (_work_to_do) break; \\r
(_r)->sring->req_event = (_r)->req_cons + 1; \\r
(_work_to_do) = RING_HAS_UNCONSUMED_REQUESTS(_r); \\r
} while (0)\r
\r
-#define RING_FINAL_CHECK_FOR_RESPONSES(_r, _work_to_do) do { \\r
+#define RING_FINAL_CHECK_FOR_RESPONSES(_r, _work_to_do) do { \\r
(_work_to_do) = RING_HAS_UNCONSUMED_RESPONSES(_r); \\r
if (_work_to_do) break; \\r
(_r)->sring->rsp_event = (_r)->rsp_cons + 1; \\r
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