diff options
author | Greg Howard <ghoward@sgi.com> | 2004-08-22 22:55:46 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-08-22 22:55:46 -0700 |
commit | 74dcabc28af9cfc64b547e88246eda9fdf9d38f0 (patch) | |
tree | 3e011c50772d523a19f3dc8cfb2118348a421402 /include | |
parent | c88eec7cb2db7bf948e4e8a94edbfe283914333a (diff) | |
download | history-74dcabc28af9cfc64b547e88246eda9fdf9d38f0.tar.gz |
[PATCH] Altix system controller communication driver
drivers/char/Kconfig
Make a config option for the SGI Altix system controller
communication driver.
drivers/char/Makefile
Add an object file target for the SGI Altix system controller
communication driver.
drivers/char/snsc.c
This file implements a driver that allows an application to
communicate with the SGI Altix system controller network. Most of
the heavy lifting is done in SAL in order to allow Linux run-time
applications to share the system controller link(s) with SAL
run-time services.
drivers/char/snsc.h
Macros and data types for the Altix system controller driver
(drivers/char/snsc.c).
drivers/serial/sn_console.c
Modify the SGI Altix console driver to share an interupt with the
system controller communication driver.
include/asm-ia64/sn/sn_sal.h
Provide an interface to the SAL runtime services that allow the
kernel or user applications to send/receive arbitary system
controller data.
Signed-off-by: Greg Howard <ghoward@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-ia64/sn/sn_sal.h | 142 |
1 files changed, 141 insertions, 1 deletions
diff --git a/include/asm-ia64/sn/sn_sal.h b/include/asm-ia64/sn/sn_sal.h index 5bd9b3335975a5..8f47f4f34f5a91 100644 --- a/include/asm-ia64/sn/sn_sal.h +++ b/include/asm-ia64/sn/sn_sal.h @@ -8,7 +8,7 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (c) 2000-2003 Silicon Graphics, Inc. All rights reserved. + * Copyright (c) 2000-2004 Silicon Graphics, Inc. All rights reserved. */ @@ -60,6 +60,7 @@ #define SN_SAL_SYSCTL_FRU_CAPTURE 0x0200003f #define SN_SAL_SYSCTL_IOBRICK_PCI_OP 0x02000042 // reentrant +#define SN_SAL_IROUTER_OP 0x02000043 /* * Service-specific constants @@ -86,6 +87,25 @@ #endif /* CONFIG_HOTPLUG_PCI_SGI */ /* + * IRouter (i.e. generalized system controller) operations + */ +#define SAL_IROUTER_OPEN 0 /* open a subchannel */ +#define SAL_IROUTER_CLOSE 1 /* close a subchannel */ +#define SAL_IROUTER_SEND 2 /* send part of an IRouter packet */ +#define SAL_IROUTER_RECV 3 /* receive part of an IRouter packet */ +#define SAL_IROUTER_INTR_STATUS 4 /* check the interrupt status for + * an open subchannel + */ +#define SAL_IROUTER_INTR_ON 5 /* enable an interrupt */ +#define SAL_IROUTER_INTR_OFF 6 /* disable an interrupt */ +#define SAL_IROUTER_INIT 7 /* initialize IRouter driver */ + +/* IRouter interrupt mask bits */ +#define SAL_IROUTER_INTR_XMIT SAL_CONSOLE_INTR_XMIT +#define SAL_IROUTER_INTR_RECV SAL_CONSOLE_INTR_RECV + + +/* * SN_SAL_GET_PARTITION_ADDR return constants */ #define SALRET_MORE_PASSES 1 @@ -704,4 +724,124 @@ ia64_sn_set_error_handling_features(const u64 *feature_bits) return rv.status; } + +/* + * Open a subchannel for sending arbitrary data to the system + * controller network via the system controller device associated with + * 'nasid'. Return the subchannel number or a negative error code. + */ +static inline int +ia64_sn_irtr_open(nasid_t nasid) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_OPEN, nasid, + 0, 0, 0, 0, 0); + return (int) rv.v0; +} + +/* + * Close system controller subchannel 'subch' previously opened on 'nasid'. + */ +static inline int +ia64_sn_irtr_close(nasid_t nasid, int subch) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_CLOSE, + (u64) nasid, (u64) subch, 0, 0, 0, 0); + return (int) rv.status; +} + +/* + * Read data from system controller associated with 'nasid' on + * subchannel 'subch'. The buffer to be filled is pointed to by + * 'buf', and its capacity is in the integer pointed to by 'len'. The + * referent of 'len' is set to the number of bytes read by the SAL + * call. The return value is either SALRET_OK (for bytes read) or + * SALRET_ERROR (for error or "no data available"). + */ +static inline int +ia64_sn_irtr_recv(nasid_t nasid, int subch, char *buf, int *len) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_RECV, + (u64) nasid, (u64) subch, (u64) buf, (u64) len, + 0, 0); + return (int) rv.status; +} + +/* + * Write data to the system controller network via the system + * controller associated with 'nasid' on suchannel 'subch'. The + * buffer to be written out is pointed to by 'buf', and 'len' is the + * number of bytes to be written. The return value is either the + * number of bytes written (which could be zero) or a negative error + * code. + */ +static inline int +ia64_sn_irtr_send(nasid_t nasid, int subch, char *buf, int len) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_SEND, + (u64) nasid, (u64) subch, (u64) buf, (u64) len, + 0, 0); + return (int) rv.v0; +} + +/* + * Check whether any interrupts are pending for the system controller + * associated with 'nasid' and its subchannel 'subch'. The return + * value is a mask of pending interrupts (SAL_IROUTER_INTR_XMIT and/or + * SAL_IROUTER_INTR_RECV). + */ +static inline int +ia64_sn_irtr_intr(nasid_t nasid, int subch) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_INTR_STATUS, + (u64) nasid, (u64) subch, 0, 0, 0, 0); + return (int) rv.v0; +} + +/* + * Enable the interrupt indicated by the intr parameter (either + * SAL_IROUTER_INTR_XMIT or SAL_IROUTER_INTR_RECV). + */ +static inline int +ia64_sn_irtr_intr_enable(nasid_t nasid, int subch, u64 intr) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_INTR_ON, + (u64) nasid, (u64) subch, intr, 0, 0, 0); + return (int) rv.v0; +} + +/* + * Disable the interrupt indicated by the intr parameter (either + * SAL_IROUTER_INTR_XMIT or SAL_IROUTER_INTR_RECV). + */ +static inline int +ia64_sn_irtr_intr_disable(nasid_t nasid, int subch, u64 intr) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_INTR_OFF, + (u64) nasid, (u64) subch, intr, 0, 0, 0); + return (int) rv.v0; +} + +/* + * Initialize the SAL components of the system controller + * communication driver; specifically pass in a sizable buffer that + * can be used for allocation of subchannel queues as new subchannels + * are opened. "buf" points to the buffer, and "len" specifies its + * length. + */ +static inline int +ia64_sn_irtr_init(nasid_t nasid, void *buf, int len) +{ + struct ia64_sal_retval rv; + SAL_CALL_REENTRANT(rv, SN_SAL_IROUTER_OP, SAL_IROUTER_INIT, + (u64) nasid, (u64) buf, (u64) len, 0, 0, 0); + return (int) rv.status; +} + #endif /* _ASM_IA64_SN_SN_SAL_H */ |