patch-2.4.21 linux-2.4.21/arch/ia64/sn/io/sn2/sgi_io_init.c

• Lines: 231
• Date: 2003-06-13 07:51:31.000000000 -0700
• Orig file: linux-2.4.20/arch/ia64/sn/io/sn2/sgi_io_init.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/arch/ia64/sn/io/sn2/sgi_io_init.c linux-2.4.21/arch/ia64/sn/io/sn2/sgi_io_init.c
@@ -0,0 +1,230 @@
+/* $Id$
+ *
+ * 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) 1992 - 1997, 2000-2002 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/config.h>
+#include <linux/slab.h>
+#include <asm/sn/sgi.h>
+#include <asm/sn/io.h>
+#include <asm/sn/sn_cpuid.h>
+#include <asm/sn/klconfig.h>
+#include <asm/sn/sn_private.h>
+#include <asm/sn/pci/pciba.h>
+#include <linux/smp.h>
+
+extern void mlreset(void);
+extern int init_hcl(void);
+extern void klgraph_hack_init(void);
+extern void hubspc_init(void);
+extern void pciio_init(void);
+extern void pcibr_init(void);
+extern void xtalk_init(void);
+extern void xbow_init(void);
+extern void xbmon_init(void);
+extern void pciiox_init(void);
+extern void pic_init(void);
+extern void usrpci_init(void);
+extern void ioc3_init(void);
+extern void initialize_io(void);
+extern void klhwg_add_all_modules(devfs_handle_t);
+extern void klhwg_add_all_nodes(devfs_handle_t);
+
+void sn_mp_setup(void);
+extern devfs_handle_t hwgraph_root;
+extern void io_module_init(void);
+extern void pci_bus_cvlink_init(void);
+extern void temp_hack(void);
+
+extern int pci_bus_to_hcl_cvlink(void);
+
+/* #define DEBUG_IO_INIT 1 */
+#ifdef DEBUG_IO_INIT
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif /* DEBUG_IO_INIT */
+
+/*
+ * per_hub_init
+ *
+ * 	This code is executed once for each Hub chip.
+ */
+static void
+per_hub_init(cnodeid_t cnode)
+{
+	nasid_t		nasid;
+	nodepda_t	*npdap;
+	ii_icmr_u_t	ii_icmr;
+	ii_ibcr_u_t	ii_ibcr;
+
+	nasid = COMPACT_TO_NASID_NODEID(cnode);
+
+	ASSERT(nasid != INVALID_NASID);
+	ASSERT(NASID_TO_COMPACT_NODEID(nasid) == cnode);
+
+	npdap = NODEPDA(cnode);
+
+#ifdef BRINGUP2
+#if 0
+	while ((REMOTE_HUB_L(nasid, IIO_IFDR)) != 0x2d2d)
+		REMOTE_HUB_S(nasid, IIO_IFDR, 0xadad);
+#endif
+	printk("IIO_IFDR = 0x%x\n", REMOTE_HUB_L(nasid, IIO_IFDR));
+	REMOTE_HUB_S(nasid, IIO_IWEIM, 0x8000);
+#endif
+	/*
+	 * Set the total number of CRBs that can be used.
+	 */
+	ii_icmr.ii_icmr_regval= 0x0;
+	ii_icmr.ii_icmr_fld_s.i_c_cnt = 0xF;
+	REMOTE_HUB_S(nasid, IIO_ICMR, ii_icmr.ii_icmr_regval);
+
+	/*
+	 * Set the number of CRBs that both of the BTEs combined
+	 * can use minus 1.
+	 */
+	ii_ibcr.ii_ibcr_regval= 0x0;
+	ii_ibcr.ii_ibcr_fld_s.i_count = 0x8;
+	REMOTE_HUB_S(nasid, IIO_IBCR, ii_ibcr.ii_ibcr_regval);
+
+	/*
+	 * Set CRB timeout to be 10ms.
+	 */
+#ifdef BRINGUP2
+	REMOTE_HUB_S(nasid, IIO_ICTP, 0xffffff );
+	REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
+	REMOTE_HUB_S(nasid, IIO_IDBSS, 0x504);
+	REMOTE_HUB_S(nasid, SH_DEBUG_SELECT, 0x0002DF6D74CF2C70);
+#endif
+
+	/* Initialize error interrupts for this hub. */
+	hub_error_init(cnode);
+}
+
+/*
+ * This routine is responsible for the setup of all the IRIX hwgraph style
+ * stuff that's been pulled into linux.  It's called by sn_pci_find_bios which
+ * is called just before the generic Linux PCI layer does its probing (by 
+ * platform_pci_fixup aka sn_pci_fixup).
+ *
+ * It is very IMPORTANT that this call is only made by the Master CPU!
+ *
+ */
+
+void
+sgi_master_io_infr_init(void)
+{
+	int cnode;
+
+	/*
+	 * Do any early init stuff .. einit_tbl[] etc.
+	 */
+	init_hcl(); /* Sets up the hwgraph compatibility layer with devfs */
+
+	/*
+	 * initialize the Linux PCI to xwidget vertexes ..
+	 */
+	pci_bus_cvlink_init();
+
+#ifdef BRINGUP
+	/*
+	 * Hack to provide statically initialzed klgraph entries.
+	 */
+	DBG("--> sgi_master_io_infr_init: calling klgraph_hack_init()\n");
+	klgraph_hack_init();
+#endif /* BRINGUP */
+
+	/*
+	 * This is the Master CPU.  Emulate mlsetup and main.c in Irix.
+	 */
+	mlreset();
+
+	/*
+	 * allowboot() is called by kern/os/main.c in main()
+	 * Emulate allowboot() ...
+	 *   per_cpu_init() - only need per_hub_init()
+	 *   cpu_io_setup() - Nothing to do.
+	 * 
+	 */
+	sn_mp_setup();
+
+	for (cnode = 0; cnode < numnodes; cnode++) {
+		per_hub_init(cnode);
+	}
+
+	/* We can do headless hub cnodes here .. */
+
+	/*
+	 * io_init[] stuff.
+	 *
+	 * Get SGI IO Infrastructure drivers to init and register with 
+	 * each other etc.
+	 */
+
+	hubspc_init();
+	pciio_init();
+	pcibr_init();
+	pic_init();
+	xtalk_init();
+	xbow_init();
+	xbmon_init();
+	pciiox_init();
+	usrpci_init();
+	ioc3_init();
+
+	/*
+	 *
+	 * Our IO Infrastructure drivers are in place .. 
+	 * Initialize the whole IO Infrastructure .. xwidget/device probes.
+	 *
+	 */
+	initialize_io();
+	pci_bus_to_hcl_cvlink();
+
+#ifdef CONFIG_PCIBA
+	DBG("--> sgi_master_io_infr_init: calling pciba_init()\n");
+#ifndef BRINGUP2
+ 	pciba_init();
+#endif
+#endif
+}
+
+/*
+ * One-time setup for MP SN.
+ * Allocate per-node data, slurp prom klconfig information and
+ * convert it to hwgraph information.
+ */
+void
+sn_mp_setup(void)
+{
+	cpuid_t		cpu;
+
+	for (cpu = 0; cpu < smp_num_cpus; cpu++) {
+		/* Skip holes in CPU space */
+		if (cpu_enabled(cpu)) {
+			init_platform_pda(cpu);
+		}
+	}
+
+	/*
+	 * Initialize platform-dependent vertices in the hwgraph:
+	 *	module
+	 *	node
+	 *	cpu
+	 *	memory
+	 *	slot
+	 *	hub
+	 *	router
+	 *	xbow
+	 */
+
+	io_module_init(); /* Use to be called module_init() .. */
+	klhwg_add_all_modules(hwgraph_root);
+	klhwg_add_all_nodes(hwgraph_root);
+}