patch-2.4.22 linux-2.4.22/arch/ia64/sn/io/platform_init/sgi_io_init.c
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- Lines: 110
- Date:
2003-08-25 04:44:39.000000000 -0700
- Orig file:
linux-2.4.21/arch/ia64/sn/io/platform_init/sgi_io_init.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/arch/ia64/sn/io/platform_init/sgi_io_init.c linux-2.4.22/arch/ia64/sn/io/platform_init/sgi_io_init.c
@@ -0,0 +1,109 @@
+/*
+ * 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, 2000-2003 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/pda.h>
+#include <linux/smp.h>
+
+extern int init_hcl(void);
+
+/*
+ * per_hub_init
+ *
+ * This code is executed once for each Hub chip.
+ */
+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;
+ ii_ilcsr_u_t ii_ilcsr;
+
+ nasid = COMPACT_TO_NASID_NODEID(cnode);
+
+ ASSERT(nasid != INVALID_NASID);
+ ASSERT(NASID_TO_COMPACT_NODEID(nasid) == cnode);
+
+ npdap = NODEPDA(cnode);
+
+ /* Disable the request and reply errors. */
+ REMOTE_HUB_S(nasid, IIO_IWEIM, 0xC000);
+
+ /*
+ * 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;
+ if (enable_shub_wars_1_1() ) {
+ // Set bit one of ICMR to prevent II from sending interrupt for II bug.
+ ii_icmr.ii_icmr_regval |= 0x1;
+ }
+ 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_ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(nasid, IIO_LLP_CSR);
+ if (ii_ilcsr.ii_ilcsr_fld_s.i_llp_stat & LNK_STAT_WORKING) {
+ ii_ibcr.ii_ibcr_fld_s.i_count = 0x8;
+ } else {
+ /*
+ * if the LLP is down, there is no attached I/O, so
+ * give BTE all the CRBs.
+ */
+ ii_ibcr.ii_ibcr_fld_s.i_count = 0x14;
+ }
+ REMOTE_HUB_S(nasid, IIO_IBCR, ii_ibcr.ii_ibcr_regval);
+
+ /*
+ * Set CRB timeout to be 10ms.
+ */
+ REMOTE_HUB_S(nasid, IIO_ICTP, 0xffffff );
+ REMOTE_HUB_S(nasid, IIO_ICTO, 0xff);
+
+ /* 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)
+{
+ extern void irix_io_init(void);
+
+ init_hcl(); /* Sets up the hwgraph compatibility layer with devfs */
+ irix_io_init(); /* Do IRIX Compatibility IO Init */
+
+#ifdef CONFIG_KDB
+ {
+ extern void kdba_io_init(void);
+ kdba_io_init();
+ }
+#endif
+
+}
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