patch-2.4.19 linux-2.4.19/arch/ia64/sn/io/sn2/pcibr/pcibr_hints.c

• Lines: 205
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/ia64/sn/io/sn2/pcibr/pcibr_hints.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/ia64/sn/io/sn2/pcibr/pcibr_hints.c linux-2.4.19/arch/ia64/sn/io/sn2/pcibr/pcibr_hints.c
@@ -0,0 +1,204 @@
+/*
+ *
+ * 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) 2001-2002 Silicon Graphics, Inc. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <asm/sn/sgi.h>
+#include <asm/sn/sn_cpuid.h>
+#include <asm/sn/addrs.h>
+#include <asm/sn/arch.h>
+#include <asm/sn/iograph.h>
+#include <asm/sn/invent.h>
+#include <asm/sn/hcl.h>
+#include <asm/sn/labelcl.h>
+#include <asm/sn/xtalk/xwidget.h>
+#include <asm/sn/pci/bridge.h>
+#include <asm/sn/pci/pciio.h>
+#include <asm/sn/pci/pcibr.h>
+#include <asm/sn/pci/pcibr_private.h>
+#include <asm/sn/pci/pci_defs.h>
+#include <asm/sn/prio.h>
+#include <asm/sn/xtalk/xbow.h>
+#include <asm/sn/ioc3.h>
+#include <asm/sn/eeprom.h>
+#include <asm/sn/io.h>
+#include <asm/sn/sn_private.h>
+
+pcibr_hints_t           pcibr_hints_get(devfs_handle_t, int);
+void                    pcibr_hints_fix_rrbs(devfs_handle_t);
+void                    pcibr_hints_dualslot(devfs_handle_t, pciio_slot_t, pciio_slot_t);
+void			pcibr_hints_intr_bits(devfs_handle_t, pcibr_intr_bits_f *);
+void                    pcibr_set_rrb_callback(devfs_handle_t, rrb_alloc_funct_t);
+void                    pcibr_hints_handsoff(devfs_handle_t);
+void                    pcibr_hints_subdevs(devfs_handle_t, pciio_slot_t, uint64_t);
+
+pcibr_hints_t
+pcibr_hints_get(devfs_handle_t xconn_vhdl, int alloc)
+{
+    arbitrary_info_t        ainfo = 0;
+    graph_error_t	    rv;
+    pcibr_hints_t           hint;
+
+    rv = hwgraph_info_get_LBL(xconn_vhdl, INFO_LBL_PCIBR_HINTS, &ainfo);
+
+    if (alloc && (rv != GRAPH_SUCCESS)) {
+
+	NEW(hint);
+	hint->rrb_alloc_funct = NULL;
+	hint->ph_intr_bits = NULL;
+	rv = hwgraph_info_add_LBL(xconn_vhdl, 
+				  INFO_LBL_PCIBR_HINTS, 	
+				  (arbitrary_info_t) hint);
+	if (rv != GRAPH_SUCCESS)
+	    goto abnormal_exit;
+
+	rv = hwgraph_info_get_LBL(xconn_vhdl, INFO_LBL_PCIBR_HINTS, &ainfo);
+	
+	if (rv != GRAPH_SUCCESS)
+	    goto abnormal_exit;
+
+	if (ainfo != (arbitrary_info_t) hint)
+	    goto abnormal_exit;
+    }
+    return (pcibr_hints_t) ainfo;
+
+abnormal_exit:
+#ifdef LATER
+    printf("SHOULD NOT BE HERE\n");
+#endif
+    DEL(hint);
+    return(NULL);
+
+}
+
+void
+pcibr_hints_fix_some_rrbs(devfs_handle_t xconn_vhdl, unsigned mask)
+{
+    pcibr_hints_t           hint = pcibr_hints_get(xconn_vhdl, 1);
+
+    if (hint)
+	hint->ph_rrb_fixed = mask;
+#if DEBUG
+    else
+	printk("pcibr_hints_fix_rrbs: pcibr_hints_get failed at\n"
+		"\t%p\n", xconn_vhdl);
+#endif
+}
+
+void
+pcibr_hints_fix_rrbs(devfs_handle_t xconn_vhdl)
+{
+    pcibr_hints_fix_some_rrbs(xconn_vhdl, 0xFF);
+}
+
+void
+pcibr_hints_dualslot(devfs_handle_t xconn_vhdl,
+		     pciio_slot_t host,
+		     pciio_slot_t guest)
+{
+    pcibr_hints_t           hint = pcibr_hints_get(xconn_vhdl, 1);
+
+    if (hint)
+	hint->ph_host_slot[guest] = host + 1;
+#if DEBUG
+    else
+	printk("pcibr_hints_dualslot: pcibr_hints_get failed at\n"
+		"\t%p\n", xconn_vhdl);
+#endif
+}
+
+void
+pcibr_hints_intr_bits(devfs_handle_t xconn_vhdl,
+		      pcibr_intr_bits_f *xxx_intr_bits)
+{
+    pcibr_hints_t           hint = pcibr_hints_get(xconn_vhdl, 1);
+
+    if (hint)
+	hint->ph_intr_bits = xxx_intr_bits;
+#if DEBUG
+    else
+	printk("pcibr_hints_intr_bits: pcibr_hints_get failed at\n"
+	       "\t%p\n", xconn_vhdl);
+#endif
+}
+
+void
+pcibr_set_rrb_callback(devfs_handle_t xconn_vhdl, rrb_alloc_funct_t rrb_alloc_funct)
+{
+    pcibr_hints_t           hint = pcibr_hints_get(xconn_vhdl, 1);
+
+    if (hint)
+	hint->rrb_alloc_funct = rrb_alloc_funct;
+}
+
+void
+pcibr_hints_handsoff(devfs_handle_t xconn_vhdl)
+{
+    pcibr_hints_t           hint = pcibr_hints_get(xconn_vhdl, 1);
+
+    if (hint)
+	hint->ph_hands_off = 1;
+#if DEBUG
+    else
+	printk("pcibr_hints_handsoff: pcibr_hints_get failed at\n"
+		"\t%p\n", xconn_vhdl);
+#endif
+}
+
+void
+pcibr_hints_subdevs(devfs_handle_t xconn_vhdl,
+		    pciio_slot_t slot,
+		    uint64_t subdevs)
+{
+    arbitrary_info_t        ainfo = 0;
+    char                    sdname[16];
+    devfs_handle_t            pconn_vhdl = GRAPH_VERTEX_NONE;
+
+    sprintf(sdname, "pci/%d", slot);
+    (void) hwgraph_path_add(xconn_vhdl, sdname, &pconn_vhdl);
+    if (pconn_vhdl == GRAPH_VERTEX_NONE) {
+#if DEBUG
+	printk("pcibr_hints_subdevs: hwgraph_path_create failed at\n"
+		"\t%p (seeking %s)\n", xconn_vhdl, sdname);
+#endif
+	return;
+    }
+    hwgraph_info_get_LBL(pconn_vhdl, INFO_LBL_SUBDEVS, &ainfo);
+    if (ainfo == 0) {
+	uint64_t                *subdevp;
+
+	NEW(subdevp);
+	if (!subdevp) {
+#if DEBUG
+	    printk("pcibr_hints_subdevs: subdev ptr alloc failed at\n"
+		    "\t%p\n", pconn_vhdl);
+#endif
+	    return;
+	}
+	*subdevp = subdevs;
+	hwgraph_info_add_LBL(pconn_vhdl, INFO_LBL_SUBDEVS, (arbitrary_info_t) subdevp);
+	hwgraph_info_get_LBL(pconn_vhdl, INFO_LBL_SUBDEVS, &ainfo);
+	if (ainfo == (arbitrary_info_t) subdevp)
+	    return;
+	DEL(subdevp);
+	if (ainfo == (arbitrary_info_t) NULL) {
+#if DEBUG
+	    printk("pcibr_hints_subdevs: null subdevs ptr at\n"
+		    "\t%p\n", pconn_vhdl);
+#endif
+	    return;
+	}
+#if DEBUG
+	printk("pcibr_subdevs_get: dup subdev add_LBL at\n"
+		"\t%p\n", pconn_vhdl);
+#endif
+    }
+    *(uint64_t *) ainfo = subdevs;
+}