diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/vas.h')
| -rw-r--r-- | arch/powerpc/platforms/powernv/vas.h | 93 |
1 files changed, 52 insertions, 41 deletions
diff --git a/arch/powerpc/platforms/powernv/vas.h b/arch/powerpc/platforms/powernv/vas.h index 38dee5d50f31..ae0100fd35bb 100644 --- a/arch/powerpc/platforms/powernv/vas.h +++ b/arch/powerpc/platforms/powernv/vas.h @@ -13,6 +13,8 @@ #include <linux/idr.h> #include <asm/vas.h> #include <linux/io.h> +#include <linux/dcache.h> +#include <linux/mutex.h> /* * Overview of Virtual Accelerator Switchboard (VAS). @@ -106,8 +108,8 @@ * * TODO: Needs tuning for per-process credits */ -#define VAS_WCREDS_MIN 16 -#define VAS_WCREDS_MAX ((64 << 10) - 1) +#define VAS_RX_WCREDS_MAX ((64 << 10) - 1) +#define VAS_TX_WCREDS_MAX ((4 << 10) - 1) #define VAS_WCREDS_DEFAULT (1 << 10) /* @@ -259,6 +261,16 @@ #define VAS_NX_UTIL_ADDER PPC_BITMASK(32, 63) /* + * VREG(x): + * Expand a register's short name (eg: LPID) into two parameters: + * - the register's short name in string form ("LPID"), and + * - the name of the macro (eg: VAS_LPID_OFFSET), defining the + * register's offset in the window context + */ +#define VREG_SFX(n, s) __stringify(n), VAS_##n##s +#define VREG(r) VREG_SFX(r, _OFFSET) + +/* * Local Notify Scope Control Register. (Receive windows only). */ enum vas_notify_scope { @@ -307,6 +319,9 @@ struct vas_instance { struct mutex mutex; struct vas_window *rxwin[VAS_COP_TYPE_MAX]; struct vas_window *windows[VAS_WINDOWS_PER_CHIP]; + + char *dbgname; + struct dentry *dbgdir; }; /* @@ -322,6 +337,10 @@ struct vas_window { void *hvwc_map; /* HV window context */ void *uwc_map; /* OS/User window context */ pid_t pid; /* Linux process id of owner */ + int wcreds_max; /* Window credits */ + + char *dbgname; + struct dentry *dbgdir; /* Fields applicable only to send windows */ void *paste_kaddr; @@ -383,45 +402,23 @@ struct vas_winctx { enum vas_notify_after_count notify_after_count; }; -extern struct vas_instance *find_vas_instance(int vasid); +extern struct mutex vas_mutex; -/* - * VREG(x): - * Expand a register's short name (eg: LPID) into two parameters: - * - the register's short name in string form ("LPID"), and - * - the name of the macro (eg: VAS_LPID_OFFSET), defining the - * register's offset in the window context - */ -#define VREG_SFX(n, s) __stringify(n), VAS_##n##s -#define VREG(r) VREG_SFX(r, _OFFSET) - -#ifdef vas_debug -static inline void dump_rx_win_attr(struct vas_rx_win_attr *attr) -{ - pr_err("fault %d, notify %d, intr %d early %d\n", - attr->fault_win, attr->notify_disable, - attr->intr_disable, attr->notify_early); - - pr_err("rx_fifo_size %d, max value %d\n", - attr->rx_fifo_size, VAS_RX_FIFO_SIZE_MAX); -} +extern struct vas_instance *find_vas_instance(int vasid); +extern void vas_init_dbgdir(void); +extern void vas_instance_init_dbgdir(struct vas_instance *vinst); +extern void vas_window_init_dbgdir(struct vas_window *win); +extern void vas_window_free_dbgdir(struct vas_window *win); static inline void vas_log_write(struct vas_window *win, char *name, void *regptr, u64 val) { if (val) - pr_err("%swin #%d: %s reg %p, val 0x%016llx\n", + pr_debug("%swin #%d: %s reg %p, val 0x%016llx\n", win->tx_win ? "Tx" : "Rx", win->winid, name, regptr, val); } -#else /* vas_debug */ - -#define vas_log_write(win, name, reg, val) -#define dump_rx_win_attr(attr) - -#endif /* vas_debug */ - static inline void write_uwc_reg(struct vas_window *win, char *name, s32 reg, u64 val) { @@ -450,18 +447,32 @@ static inline u64 read_hvwc_reg(struct vas_window *win, return in_be64(win->hvwc_map+reg); } -#ifdef vas_debug - -static void print_fifo_msg_count(struct vas_window *txwin) +/* + * Encode/decode the Partition Send Window ID (PSWID) for a window in + * a way that we can uniquely identify any window in the system. i.e. + * we should be able to locate the 'struct vas_window' given the PSWID. + * + * Bits Usage + * 0:7 VAS id (8 bits) + * 8:15 Unused, 0 (3 bits) + * 16:31 Window id (16 bits) + */ +static inline u32 encode_pswid(int vasid, int winid) { - uint64_t read_hvwc_reg(struct vas_window *w, char *n, uint64_t o); - pr_devel("Winid %d, Msg count %llu\n", txwin->winid, - (uint64_t)read_hvwc_reg(txwin, VREG(LRFIFO_PUSH))); -} -#else /* vas_debug */ + u32 pswid = 0; -#define print_fifo_msg_count(window) + pswid |= vasid << (31 - 7); + pswid |= winid; -#endif /* vas_debug */ + return pswid; +} + +static inline void decode_pswid(u32 pswid, int *vasid, int *winid) +{ + if (vasid) + *vasid = pswid >> (31 - 7) & 0xFF; + if (winid) + *winid = pswid & 0xFFFF; +} #endif /* _VAS_H */ |