#include <linux/bitmap.h>
#define BITSPERBYTE 8
-/* Broadcast Assist Unit messaging structures */
-
/*
+ * Broadcast Assist Unit messaging structures
+ *
* Selective Broadcast activations are induced by software action
* specifying a particular 8-descriptor "set" via a 6-bit index written
* to an MMR.
* Each of the descriptors is 64 bytes in size (8*64 = 512 bytes in a set).
*/
-#define UV_ITEMS_PER_DESCRIPTOR 8
-#define UV_CPUS_PER_ACT_STATUS 32
-#define UV_ACT_STATUS_MASK 0x3
-#define UV_ACT_STATUS_SIZE 2
-#define UV_ACTIVATION_DESCRIPTOR_SIZE 32
-#define UV_DISTRIBUTION_SIZE 256
-#define UV_SW_ACK_NPENDING 8
-#define UV_BAU_MESSAGE 200 /* Messaging irq; see irq_64.h */
- /* and include/asm-x86/hw_irq_64.h */
- /* To be dynamically allocated in the future */
-#define UV_NET_ENDPOINT_INTD 0x38
-#define UV_DESC_BASE_PNODE_SHIFT 49 /* position of pnode (nasid>>1) in MMR */
-#define UV_PAYLOADQ_PNODE_SHIFT 49
-
-#define UV_PTC_BASENAME "sgi_uv/ptc_statistics"
-#define uv_physnodeaddr(x) ((__pa((unsigned long)(x)) & uv_mmask))
-
-/* bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1 */
-#define DESC_STATUS_IDLE 0
-#define DESC_STATUS_ACTIVE 1
-#define DESC_STATUS_DESTINATION_TIMEOUT 2
-#define DESC_STATUS_SOURCE_TIMEOUT 3
-
-/* source side threshholds at which message retries print a warning */
-#define SOURCE_TIMEOUT_LIMIT 20
-#define DESTINATION_TIMEOUT_LIMIT 20
-
-/* number of entries in the destination side payload queue */
-#define DESTINATION_PAYLOAD_QUEUE_SIZE 17
-/* number of destination side software ack resources */
-#define DESTINATION_NUM_RESOURCES 8
+#define UV_ITEMS_PER_DESCRIPTOR 8
+#define UV_CPUS_PER_ACT_STATUS 32
+#define UV_ACT_STATUS_MASK 0x3
+#define UV_ACT_STATUS_SIZE 2
+#define UV_ACTIVATION_DESCRIPTOR_SIZE 32
+#define UV_DISTRIBUTION_SIZE 256
+#define UV_SW_ACK_NPENDING 8
+#define UV_NET_ENDPOINT_INTD 0x38
+#define UV_DESC_BASE_PNODE_SHIFT 49
+#define UV_PAYLOADQ_PNODE_SHIFT 49
+#define UV_PTC_BASENAME "sgi_uv/ptc_statistics"
+#define uv_physnodeaddr(x) ((__pa((unsigned long)(x)) & uv_mmask))
+
+/*
+ * bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1
+ */
+#define DESC_STATUS_IDLE 0
+#define DESC_STATUS_ACTIVE 1
+#define DESC_STATUS_DESTINATION_TIMEOUT 2
+#define DESC_STATUS_SOURCE_TIMEOUT 3
+
+/*
+ * source side threshholds at which message retries print a warning
+ */
+#define SOURCE_TIMEOUT_LIMIT 20
+#define DESTINATION_TIMEOUT_LIMIT 20
+
+/*
+ * number of entries in the destination side payload queue
+ */
+#define DEST_Q_SIZE 17
+/*
+ * number of destination side software ack resources
+ */
+#define DEST_NUM_RESOURCES 8
#define MAX_CPUS_PER_NODE 32
+/*
+ * completion statuses for sending a TLB flush message
+ */
+#define FLUSH_RETRY 1
+#define FLUSH_GIVEUP 2
+#define FLUSH_COMPLETE 3
-/* Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor) */
-/* If the 'multilevel' flag in the header portion of the descriptor
+/*
+ * Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor)
+ * If the 'multilevel' flag in the header portion of the descriptor
* has been set to 0, then endpoint multi-unicast mode is selected.
* The distribution specification (32 bytes) is interpreted as a 256-bit
* distribution vector. Adjacent bits correspond to consecutive even numbered
* nodeIDs. The result of adding the index of a given bit to the 15-bit
* 'base_dest_nodeid' field of the header corresponds to the
- * destination nodeID associated with that specified bit. */
+ * destination nodeID associated with that specified bit.
+ */
struct bau_target_nodemask {
unsigned long bits[BITS_TO_LONGS(256)];
};
-/* mask of cpu's on a node */
-/* (during initialization we need to check that unsigned long has
- enough bits for max. cpu's per node) */
+/*
+ * mask of cpu's on a node
+ * (during initialization we need to check that unsigned long has
+ * enough bits for max. cpu's per node)
+ */
struct bau_local_cpumask {
unsigned long bits;
};
* the s/w ack bit vector ]
*/
-/* The payload is software-defined for INTD transactions */
+/*
+ * The payload is software-defined for INTD transactions
+ */
struct bau_msg_payload {
unsigned long address; /* signifies a page or all TLB's
of the cpu */
};
-/* Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor) */
-/* see table 4.2.3.0.1 in broacast_assist spec. */
+/*
+ * Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)
+ * see table 4.2.3.0.1 in broacast_assist spec.
+ */
struct bau_msg_header {
int dest_subnodeid:6; /* must be zero */
/* bits 5:0 */
/* bits 127:107 */
};
-/* The format of the message to send, plus all accompanying control */
-/* Should be 64 bytes */
-struct bau_activation_descriptor {
+/*
+ * The activation descriptor:
+ * The format of the message to send, plus all accompanying control
+ * Should be 64 bytes
+ */
+struct bau_desc {
struct bau_target_nodemask distribution;
- /* message template, consisting of header and payload: */
+ /*
+ * message template, consisting of header and payload:
+ */
struct bau_msg_header header;
struct bau_msg_payload payload;
};
/* bytes 24-31 */
};
-/* one for every slot in the destination payload queue */
+/*
+ * one for every slot in the destination payload queue
+ */
struct bau_msg_status {
struct bau_local_cpumask seen_by; /* map of cpu's */
};
-/* one for every slot in the destination software ack resources */
+/*
+ * one for every slot in the destination software ack resources
+ */
struct bau_sw_ack_status {
struct bau_payload_queue_entry *msg; /* associated message */
int watcher; /* cpu monitoring, or -1 */
};
-/* one on every node and per-cpu; to locate the software tables */
+/*
+ * one on every node and per-cpu; to locate the software tables
+ */
struct bau_control {
- struct bau_activation_descriptor *descriptor_base;
+ struct bau_desc *descriptor_base;
struct bau_payload_queue_entry *bau_msg_head;
struct bau_payload_queue_entry *va_queue_first;
struct bau_payload_queue_entry *va_queue_last;
unsigned long onetlb; /* times just one tlb on this cpu was flushed */
unsigned long s_retry; /* retries on source side timeouts */
unsigned long d_retry; /* retries on destination side timeouts */
- unsigned long sflush_ns;/* nanoseconds spent in uv_flush_tlb_others */
- unsigned long dflush_ns;/* nanoseconds spent destination side */
+ unsigned long sflush; /* cycles spent in uv_flush_tlb_others */
+ unsigned long dflush; /* cycles spent on destination side */
unsigned long retriesok; /* successes on retries */
unsigned long nomsg; /* interrupts with no message */
unsigned long multmsg; /* interrupts with multiple messages */
bitmap_zero(&dstp->bits, nbits);
}
-/*
- * atomic increment of a short integer
- * (rather than using the __sync_add_and_fetch() intrinsic)
- *
- * returns the new value of the variable
- */
-static inline short int atomic_inc_short(short int *v)
-{
- asm volatile("movw $1, %%cx\n"
- "lock ; xaddw %%cx, %0\n"
- : "+m" (*v) /* outputs */
- : : "%cx", "memory"); /* inputs : clobbereds */
- return *v;
-}
-
-/*
- * atomic OR of two long integers
- * (rather than using the __sync_or_and_fetch() intrinsic)
- */
-static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
-{
- asm volatile("movq %0, %%rax; lea %1, %%rdx\n"
- "lock ; orq %%rax, %%rdx\n"
- : "+m" (*v1) /* outputs */
- : "m" (v1), "m" (v2) /* inputs */
- : "memory"); /* clobbereds */
-}
-
#define cpubit_isset(cpu, bau_local_cpumask) \
test_bit((cpu), (bau_local_cpumask).bits)
-int uv_flush_tlb_others(cpumask_t *, struct mm_struct *, unsigned long);
-void uv_bau_message_intr1(void);
-void uv_bau_timeout_intr1(void);
+extern int uv_flush_tlb_others(cpumask_t *, struct mm_struct *, unsigned long);
+extern void uv_bau_message_intr1(void);
+extern void uv_bau_timeout_intr1(void);
#endif /* __ASM_X86_UV_BAU__ */
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