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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/mips/dec/tc.c
Initial import
Diffstat (limited to 'arch/mips/dec/tc.c')
-rw-r--r--arch/mips/dec/tc.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/arch/mips/dec/tc.c b/arch/mips/dec/tc.c
new file mode 100644
index 000000000..732027c79
--- /dev/null
+++ b/arch/mips/dec/tc.c
@@ -0,0 +1,95 @@
+/*
+ * TURBOchannel architecture calls.
+ *
+ * Copyright (c) Harald Koerfgen, 1998
+ * Copyright (c) 2001, 2003, 2005, 2006 Maciej W. Rozycki
+ * Copyright (c) 2005 James Simmons
+ *
+ * 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.
+ */
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/tc.h>
+#include <linux/types.h>
+
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <asm/paccess.h>
+
+#include <asm/dec/interrupts.h>
+#include <asm/dec/prom.h>
+#include <asm/dec/system.h>
+
+/*
+ * Protected read byte from TURBOchannel slot space.
+ */
+int tc_preadb(u8 *valp, void __iomem *addr)
+{
+ return get_dbe(*valp, (u8 *)addr);
+}
+
+/*
+ * Get TURBOchannel bus information as specified by the spec, plus
+ * the slot space base address and the number of slots.
+ */
+int __init tc_bus_get_info(struct tc_bus *tbus)
+{
+ if (!dec_tc_bus)
+ return -ENXIO;
+
+ memcpy(&tbus->info, rex_gettcinfo(), sizeof(tbus->info));
+ tbus->slot_base = CPHYSADDR((long)rex_slot_address(0));
+
+ switch (mips_machtype) {
+ case MACH_DS5000_200:
+ tbus->num_tcslots = 7;
+ break;
+ case MACH_DS5000_2X0:
+ case MACH_DS5900:
+ tbus->ext_slot_base = 0x20000000;
+ tbus->ext_slot_size = 0x20000000;
+ /* fall through */
+ case MACH_DS5000_1XX:
+ tbus->num_tcslots = 3;
+ break;
+ case MACH_DS5000_XX:
+ tbus->num_tcslots = 2;
+ default:
+ break;
+ }
+ return 0;
+}
+
+/*
+ * Get the IRQ for the specified slot.
+ */
+void __init tc_device_get_irq(struct tc_dev *tdev)
+{
+ switch (tdev->slot) {
+ case 0:
+ tdev->interrupt = dec_interrupt[DEC_IRQ_TC0];
+ break;
+ case 1:
+ tdev->interrupt = dec_interrupt[DEC_IRQ_TC1];
+ break;
+ case 2:
+ tdev->interrupt = dec_interrupt[DEC_IRQ_TC2];
+ break;
+ /*
+ * Yuck! DS5000/200 onboard devices
+ */
+ case 5:
+ tdev->interrupt = dec_interrupt[DEC_IRQ_TC5];
+ break;
+ case 6:
+ tdev->interrupt = dec_interrupt[DEC_IRQ_TC6];
+ break;
+ default:
+ tdev->interrupt = -1;
+ break;
+ }
+}