- 根目录:
- arch
- ia64
- include
- asm
- sn
- bte.h
#ifndef _ASM_IA64_SN_BTE_H
#define _ASM_IA64_SN_BTE_H
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <linux/cache.h>
#include <asm/sn/pda.h>
#include <asm/sn/types.h>
#include <asm/sn/shub_mmr.h>
#define IBCT_NOTIFY (0x1UL << 4)
#define IBCT_ZFIL_MODE (0x1UL << 0)
#ifdef BTE_DEBUG
# define BTE_PRINTK(x) printk x
# ifdef BTE_DEBUG_VERBOSE
# define BTE_PRINTKV(x) printk x
# else
# define BTE_PRINTKV(x)
# endif
#else
# define BTE_PRINTK(x)
# define BTE_PRINTKV(x)
#endif
#define BTE_LEN_BITS (16)
#define BTE_LEN_MASK ((1 << BTE_LEN_BITS) - 1)
#define BTE_MAX_XFER (BTE_LEN_MASK << L1_CACHE_SHIFT)
#define BTES_PER_NODE (is_shub2() ? 4 : 2)
#define MAX_BTES_PER_NODE 4
#define BTE2OFF_CTRL 0
#define BTE2OFF_SRC (SH2_BT_ENG_SRC_ADDR_0 - SH2_BT_ENG_CSR_0)
#define BTE2OFF_DEST (SH2_BT_ENG_DEST_ADDR_0 - SH2_BT_ENG_CSR_0)
#define BTE2OFF_NOTIFY (SH2_BT_ENG_NOTIF_ADDR_0 - SH2_BT_ENG_CSR_0)
#define BTE_BASE_ADDR(interface) \
(is_shub2() ? (interface == 0) ? SH2_BT_ENG_CSR_0 : \
(interface == 1) ? SH2_BT_ENG_CSR_1 : \
(interface == 2) ? SH2_BT_ENG_CSR_2 : \
SH2_BT_ENG_CSR_3 \
: (interface == 0) ? IIO_IBLS0 : IIO_IBLS1)
#define BTE_SOURCE_ADDR(base) \
(is_shub2() ? base + (BTE2OFF_SRC/8) \
: base + (BTEOFF_SRC/8))
#define BTE_DEST_ADDR(base) \
(is_shub2() ? base + (BTE2OFF_DEST/8) \
: base + (BTEOFF_DEST/8))
#define BTE_CTRL_ADDR(base) \
(is_shub2() ? base + (BTE2OFF_CTRL/8) \
: base + (BTEOFF_CTRL/8))
#define BTE_NOTIF_ADDR(base) \
(is_shub2() ? base + (BTE2OFF_NOTIFY/8) \
: base + (BTEOFF_NOTIFY/8))
#define BTE_NOTIFY IBCT_NOTIFY
#define BTE_NORMAL BTE_NOTIFY
#define BTE_ZERO_FILL (BTE_NOTIFY | IBCT_ZFIL_MODE)
#define BTE_WACQUIRE 0x4000
#define BTE_USE_DEST (BTE_WACQUIRE << 1)
#define BTE_USE_ANY (BTE_USE_DEST << 1)
#define BTE_VALID_MODE(x) ((x) & (IBCT_NOTIFY | IBCT_ZFIL_MODE))
#define BTE_ACTIVE (IBLS_BUSY | IBLS_ERROR)
#define BTE_WORD_AVAILABLE (IBLS_BUSY << 1)
#define BTE_WORD_BUSY (~BTE_WORD_AVAILABLE)
#define BTE_LNSTAT_LOAD(_bte) \
HUB_L(_bte->bte_base_addr)
#define BTE_LNSTAT_STORE(_bte, _x) \
HUB_S(_bte->bte_base_addr, (_x))
#define BTE_SRC_STORE(_bte, _x) \
({ \
u64 __addr = ((_x) & ~AS_MASK); \
if (is_shub2()) \
__addr = SH2_TIO_PHYS_TO_DMA(__addr); \
HUB_S(_bte->bte_source_addr, __addr); \
})
#define BTE_DEST_STORE(_bte, _x) \
({ \
u64 __addr = ((_x) & ~AS_MASK); \
if (is_shub2()) \
__addr = SH2_TIO_PHYS_TO_DMA(__addr); \
HUB_S(_bte->bte_destination_addr, __addr); \
})
#define BTE_CTRL_STORE(_bte, _x) \
HUB_S(_bte->bte_control_addr, (_x))
#define BTE_NOTIF_STORE(_bte, _x) \
({ \
u64 __addr = ia64_tpa((_x) & ~AS_MASK); \
if (is_shub2()) \
__addr = SH2_TIO_PHYS_TO_DMA(__addr); \
HUB_S(_bte->bte_notify_addr, __addr); \
})
#define BTE_START_TRANSFER(_bte, _len, _mode) \
is_shub2() ? BTE_CTRL_STORE(_bte, IBLS_BUSY | (_mode << 24) | _len) \
: BTE_LNSTAT_STORE(_bte, _len); \
BTE_CTRL_STORE(_bte, _mode)
#define BTEFAIL_OFFSET 1
typedef enum {
BTE_SUCCESS,
BTEFAIL_DIR,
BTEFAIL_POISON,
BTEFAIL_WERR,
BTEFAIL_ACCESS,
BTEFAIL_PWERR,
BTEFAIL_PRERR,
BTEFAIL_TOUT,
BTEFAIL_XTERR,
BTEFAIL_NOTAVAIL,
} bte_result_t;
#define BTEFAIL_SH2_RESP_SHORT 0x1
#define BTEFAIL_SH2_RESP_LONG 0x2
#define BTEFAIL_SH2_RESP_DSP 0x4
#define BTEFAIL_SH2_RESP_ACCESS 0x8
#define BTEFAIL_SH2_CRB_TO 0x10
#define BTEFAIL_SH2_NACK_LIMIT 0x20
#define BTEFAIL_SH2_ALL 0x3F
#define BTE_ERR_BITS 0x3FUL
#define BTE_ERR_SHIFT 36
#define BTE_ERR_MASK (BTE_ERR_BITS << BTE_ERR_SHIFT)
#define BTE_ERROR_RETRY(value) \
(is_shub2() ? (value != BTEFAIL_SH2_CRB_TO) \
: (value != BTEFAIL_TOUT))
#define BTE_SHUB2_ERROR(_status) \
((_status & BTE_ERR_MASK) \
? (((_status >> BTE_ERR_SHIFT) & BTE_ERR_BITS) | IBLS_ERROR) \
: _status)
#define BTE_GET_ERROR_STATUS(_status) \
(BTE_SHUB2_ERROR(_status) & ~IBLS_ERROR)
#define BTE_VALID_SH2_ERROR(value) \
((value >= BTEFAIL_SH2_RESP_SHORT) && (value <= BTEFAIL_SH2_ALL))
struct bteinfo_s {
volatile u64 notify ____cacheline_aligned;
u64 *bte_base_addr ____cacheline_aligned;
u64 *bte_source_addr;
u64 *bte_destination_addr;
u64 *bte_control_addr;
u64 *bte_notify_addr;
spinlock_t spinlock;
cnodeid_t bte_cnode;
int bte_error_count;
int bte_num;
int cleanup_active;
volatile bte_result_t bh_error;
volatile u64 *most_rcnt_na;
struct bteinfo_s *btes_to_try[MAX_BTES_PER_NODE];
};
extern bte_result_t bte_copy(u64, u64, u64, u64, void *);
extern bte_result_t bte_unaligned_copy(u64, u64, u64, u64);
extern void bte_error_handler(unsigned long);
#define bte_zero(dest, len, mode, notification) \
bte_copy(0, dest, len, ((mode) | BTE_ZERO_FILL), notification)
#define BTE_UNALIGNED_COPY(src, dest, len, mode) \
(((len & (L1_CACHE_BYTES - 1)) || \
(src & (L1_CACHE_BYTES - 1)) || \
(dest & (L1_CACHE_BYTES - 1))) ? \
bte_unaligned_copy(src, dest, len, mode) : \
bte_copy(src, dest, len, mode, NULL))
#endif
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