[IA64-SGI] Bus driver for the CX port of SGI's TIO chip.

This patch is to provide CX port infrastructure for SGI TIO-based
h/w.   Also a 'core services' driver for SGI FPGA-based h/w.
                                                                                
Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

2 files changed, 74 insertions, 0 deletions

diff --git a/include/asm-ia64/sn/addrs.h b/include/asm-ia64/sn/addrs.h
index ae0bc99d573..960d626ee58 100644
--- a/include/asm-ia64/sn/addrs.h
+++ b/include/asm-ia64/sn/addrs.h
@@ -169,7 +169,10 @@
 #define TIO_BWIN_SIZE_BITS              30      /* big window size: 1G */
 #define NODE_SWIN_BASE(n, w)            ((w == 0) ? NODE_BWIN_BASE((n), SWIN0_BIGWIN) \
                 : RAW_NODE_SWIN_BASE(n, w))
+#define TIO_SWIN_BASE(n, w)             (TIO_IO_BASE(n) + \
+                                            ((u64) (w) << TIO_SWIN_SIZE_BITS))
 #define NODE_IO_BASE(n)                 (GLOBAL_MMR_SPACE | NASID_SPACE(n))
+#define TIO_IO_BASE(n)                  (UNCACHED | NASID_SPACE(n))
 #define BWIN_SIZE                       (1UL << BWIN_SIZE_BITS)
 #define NODE_BWIN_BASE0(n)              (NODE_IO_BASE(n) + BWIN_SIZE)
 #define NODE_BWIN_BASE(n, w)            (NODE_BWIN_BASE0(n) + ((u64) (w) << BWIN_SIZE_BITS))
diff --git a/include/asm-ia64/sn/tiocx.h b/include/asm-ia64/sn/tiocx.h
new file mode 100644
index 00000000000..c5447a50450
--- /dev/null
+++ b/include/asm-ia64/sn/tiocx.h
@@ -0,0 +1,71 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#ifndef _ASM_IA64_SN_TIO_TIOCX_H
+#define _ASM_IA64_SN_TIO_TIOCX_H
+
+#ifdef __KERNEL__
+
+struct cx_id_s {
+        unsigned int part_num;
+        unsigned int mfg_num;
+        int nasid;
+};
+
+struct cx_dev {
+        struct cx_id_s cx_id;
+        void *soft;                     /* driver specific */
+        struct hubdev_info *hubdev;
+        struct device dev;
+        struct cx_drv *driver;
+};
+
+struct cx_device_id {
+        unsigned int part_num;
+        unsigned int mfg_num;
+};
+
+struct cx_drv {
+        char *name;
+        const struct cx_device_id *id_table;
+        struct device_driver driver;
+        int (*probe) (struct cx_dev * dev, const struct cx_device_id * id);
+        int (*remove) (struct cx_dev * dev);
+};
+
+/* create DMA address by stripping AS bits */
+#define TIOCX_DMA_ADDR(a) (uint64_t)((uint64_t)(a) & 0xffffcfffffffffUL)
+
+#define TIOCX_TO_TIOCX_DMA_ADDR(a) (uint64_t)(((uint64_t)(a) & 0xfffffffff) |  \
+                                  ((((uint64_t)(a)) & 0xffffc000000000UL) <<2))
+
+#define TIO_CE_ASIC_PARTNUM 0xce00
+#define TIOCX_CORELET 3
+
+/* These are taken from tio_mmr_as.h */
+#define TIO_ICE_FRZ_CFG               TIO_MMR_ADDR_MOD(0x00000000b0008100UL)
+#define TIO_ICE_PMI_TX_CFG            TIO_MMR_ADDR_MOD(0x00000000b000b100UL)
+#define TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3 TIO_MMR_ADDR_MOD(0x00000000b000be18UL)
+#define TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3_CREDIT_CNT_MASK 0x000000000000000fUL
+
+#define to_cx_dev(n) container_of(n, struct cx_dev, dev)
+#define to_cx_driver(drv) container_of(drv, struct cx_drv, driver)
+
+extern struct sn_irq_info *tiocx_irq_alloc(nasid_t, int, int, nasid_t, int);
+extern void tiocx_irq_free(struct sn_irq_info *);
+extern int cx_device_unregister(struct cx_dev *);
+extern int cx_device_register(nasid_t, int, int, struct hubdev_info *);
+extern int cx_driver_unregister(struct cx_drv *);
+extern int cx_driver_register(struct cx_drv *);
+extern uint64_t tiocx_dma_addr(uint64_t addr);
+extern uint64_t tiocx_swin_base(int nasid);
+extern void tiocx_mmr_store(int nasid, uint64_t offset, uint64_t value);
+extern uint64_t tiocx_mmr_load(int nasid, uint64_t offset);
+
+#endif                          //  __KERNEL__
+#endif                          // _ASM_IA64_SN_TIO_TIOCX__