Initial import

1 files changed, 153 insertions, 0 deletions

diff --git a/drivers/misc/sgi-gru/grulib.h b/drivers/misc/sgi-gru/grulib.h
new file mode 100644
index 000000000..e77d1b1f9
--- /dev/null
+++ b/drivers/misc/sgi-gru/grulib.h
@@ -0,0 +1,153 @@
+/*
+ *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation; either version 2.1 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#ifndef __GRULIB_H__
+#define __GRULIB_H__
+
+#define GRU_BASENAME		"gru"
+#define GRU_FULLNAME		"/dev/gru"
+#define GRU_IOCTL_NUM 		 'G'
+
+/*
+ * Maximum number of GRU segments that a user can have open
+ * ZZZ temp - set high for testing. Revisit.
+ */
+#define GRU_MAX_OPEN_CONTEXTS		32
+
+/* Set Number of Request Blocks */
+#define GRU_CREATE_CONTEXT		_IOWR(GRU_IOCTL_NUM, 1, void *)
+
+/*  Set Context Options */
+#define GRU_SET_CONTEXT_OPTION		_IOWR(GRU_IOCTL_NUM, 4, void *)
+
+/* Fetch exception detail */
+#define GRU_USER_GET_EXCEPTION_DETAIL	_IOWR(GRU_IOCTL_NUM, 6, void *)
+
+/* For user call_os handling - normally a TLB fault */
+#define GRU_USER_CALL_OS		_IOWR(GRU_IOCTL_NUM, 8, void *)
+
+/* For user unload context */
+#define GRU_USER_UNLOAD_CONTEXT		_IOWR(GRU_IOCTL_NUM, 9, void *)
+
+/* For dumpping GRU chiplet state */
+#define GRU_DUMP_CHIPLET_STATE		_IOWR(GRU_IOCTL_NUM, 11, void *)
+
+/* For getting gseg statistics */
+#define GRU_GET_GSEG_STATISTICS		_IOWR(GRU_IOCTL_NUM, 12, void *)
+
+/* For user TLB flushing (primarily for tests) */
+#define GRU_USER_FLUSH_TLB		_IOWR(GRU_IOCTL_NUM, 50, void *)
+
+/* Get some config options (primarily for tests & emulator) */
+#define GRU_GET_CONFIG_INFO		_IOWR(GRU_IOCTL_NUM, 51, void *)
+
+/* Various kernel self-tests */
+#define GRU_KTEST			_IOWR(GRU_IOCTL_NUM, 52, void *)
+
+#define CONTEXT_WINDOW_BYTES(th)        (GRU_GSEG_PAGESIZE * (th))
+#define THREAD_POINTER(p, th)		(p + GRU_GSEG_PAGESIZE * (th))
+#define GSEG_START(cb)			((void *)((unsigned long)(cb) & ~(GRU_GSEG_PAGESIZE - 1)))
+
+struct gru_get_gseg_statistics_req {
+	unsigned long			gseg;
+	struct gru_gseg_statistics	stats;
+};
+
+/*
+ * Structure used to pass TLB flush parameters to the driver
+ */
+struct gru_create_context_req {
+	unsigned long		gseg;
+	unsigned int		data_segment_bytes;
+	unsigned int		control_blocks;
+	unsigned int		maximum_thread_count;
+	unsigned int		options;
+	unsigned char		tlb_preload_count;
+};
+
+/*
+ * Structure used to pass unload context parameters to the driver
+ */
+struct gru_unload_context_req {
+	unsigned long	gseg;
+};
+
+/*
+ * Structure used to set context options
+ */
+enum {sco_gseg_owner, sco_cch_req_slice, sco_blade_chiplet};
+struct gru_set_context_option_req {
+	unsigned long	gseg;
+	int		op;
+	int		val0;
+	long		val1;
+};
+
+/*
+ * Structure used to pass TLB flush parameters to the driver
+ */
+struct gru_flush_tlb_req {
+	unsigned long	gseg;
+	unsigned long	vaddr;
+	size_t		len;
+};
+
+/*
+ * Structure used to pass TLB flush parameters to the driver
+ */
+enum {dcs_pid, dcs_gid};
+struct gru_dump_chiplet_state_req {
+	unsigned int	op;
+	unsigned int	gid;
+	int		ctxnum;
+	char		data_opt;
+	char		lock_cch;
+	char		flush_cbrs;
+	char		fill[10];
+	pid_t		pid;
+	void		*buf;
+	size_t		buflen;
+	/* ---- output --- */
+	unsigned int	num_contexts;
+};
+
+#define GRU_DUMP_MAGIC	0x3474ab6c
+struct gru_dump_context_header {
+	unsigned int	magic;
+	unsigned int	gid;
+	unsigned char	ctxnum;
+	unsigned char	cbrcnt;
+	unsigned char	dsrcnt;
+	pid_t		pid;
+	unsigned long	vaddr;
+	int		cch_locked;
+	unsigned long	data[0];
+};
+
+/*
+ * GRU configuration info (temp - for testing)
+ */
+struct gru_config_info {
+	int		cpus;
+	int		blades;
+	int		nodes;
+	int		chiplets;
+	int		fill[16];
+};
+
+#endif /* __GRULIB_H__ */