Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/tc/Makefile b/drivers/tc/Makefile
new file mode 100644
index 0000000..83b5bd7
--- /dev/null
+++ b/drivers/tc/Makefile
@@ -0,0 +1,23 @@
+#
+# Makefile for the linux kernel.
+#
+
+# Object file lists.
+
+obj-$(CONFIG_TC) += tc.o
+obj-$(CONFIG_ZS) += zs.o
+obj-$(CONFIG_VT) += lk201.o lk201-map.o lk201-remap.o
+
+$(obj)/lk201-map.o: $(obj)/lk201-map.c
+
+# Uncomment if you're changing the keymap and have an appropriate
+# loadkeys version for the map. By default, we'll use the shipped
+# versions.
+# GENERATE_KEYMAP := 1
+
+ifdef GENERATE_KEYMAP
+
+$(obj)/lk201-map.c: $(obj)/%.c: $(src)/%.map
+ loadkeys --mktable $< > $@
+
+endif
diff --git a/drivers/tc/lk201-map.c_shipped b/drivers/tc/lk201-map.c_shipped
new file mode 100644
index 0000000..a9df8f5
--- /dev/null
+++ b/drivers/tc/lk201-map.c_shipped
@@ -0,0 +1,265 @@
+
+/* Do not edit this file! It was automatically generated by */
+/* loadkeys --mktable defkeymap.map > defkeymap.c */
+
+#include <linux/types.h>
+#include <linux/keyboard.h>
+#include <linux/kd.h>
+
+u_short plain_map[NR_KEYS] = {
+ 0xf200, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104, 0xf105, 0xf106,
+ 0xf107, 0xf108, 0xf109, 0xf10a, 0xf10b, 0xf10c, 0xf10d, 0xf11b,
+ 0xf11c, 0xf110, 0xf111, 0xf112, 0xf113, 0xf060, 0xf031, 0xf032,
+ 0xf033, 0xf034, 0xf035, 0xf036, 0xf037, 0xf038, 0xf039, 0xf030,
+ 0xf02d, 0xf03d, 0xf07f, 0xf114, 0xf115, 0xf116, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf009, 0xfb71, 0xfb77, 0xfb65, 0xfb72, 0xfb74,
+ 0xfb79, 0xfb75, 0xfb69, 0xfb6f, 0xfb70, 0xf05b, 0xf05d, 0xf201,
+ 0xf117, 0xf118, 0xf119, 0xf307, 0xf308, 0xf309, 0xf30b, 0xf702,
+ 0xf207, 0xfb61, 0xfb73, 0xfb64, 0xfb66, 0xfb67, 0xfb68, 0xfb6a,
+ 0xfb6b, 0xfb6c, 0xf03b, 0xf027, 0xf05c, 0xf603, 0xf304, 0xf305,
+ 0xf306, 0xf200, 0xf700, 0xf03e, 0xfb7a, 0xfb78, 0xfb63, 0xfb76,
+ 0xfb62, 0xfb6e, 0xfb6d, 0xf02c, 0xf02e, 0xf02f, 0xf200, 0xf601,
+ 0xf600, 0xf602, 0xf301, 0xf302, 0xf303, 0xf30e, 0xf200, 0xf703,
+ 0xf020, 0xf200, 0xf200, 0xf300, 0xf310, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+};
+
+static u_short shift_map[NR_KEYS] = {
+ 0xf200, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104, 0xf105, 0xf106,
+ 0xf107, 0xf108, 0xf109, 0xf10a, 0xf10b, 0xf10c, 0xf10d, 0xf203,
+ 0xf11c, 0xf110, 0xf111, 0xf112, 0xf113, 0xf07e, 0xf021, 0xf040,
+ 0xf023, 0xf024, 0xf025, 0xf05e, 0xf026, 0xf02a, 0xf028, 0xf029,
+ 0xf05f, 0xf02b, 0xf07f, 0xf114, 0xf115, 0xf116, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf009, 0xfb51, 0xfb57, 0xfb45, 0xfb52, 0xfb54,
+ 0xfb59, 0xfb55, 0xfb49, 0xfb4f, 0xfb50, 0xf07b, 0xf07d, 0xf201,
+ 0xf117, 0xf20b, 0xf20a, 0xf307, 0xf308, 0xf309, 0xf30b, 0xf702,
+ 0xf207, 0xfb41, 0xfb53, 0xfb44, 0xfb46, 0xfb47, 0xfb48, 0xfb4a,
+ 0xfb4b, 0xfb4c, 0xf03a, 0xf022, 0xf07c, 0xf603, 0xf304, 0xf305,
+ 0xf306, 0xf200, 0xf700, 0xf03c, 0xfb5a, 0xfb58, 0xfb43, 0xfb56,
+ 0xfb42, 0xfb4e, 0xfb4d, 0xf03c, 0xf03e, 0xf03f, 0xf200, 0xf601,
+ 0xf600, 0xf602, 0xf301, 0xf302, 0xf303, 0xf30e, 0xf200, 0xf703,
+ 0xf020, 0xf200, 0xf200, 0xf300, 0xf310, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+};
+
+static u_short altgr_map[NR_KEYS] = {
+ 0xf200, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104, 0xf105, 0xf106,
+ 0xf107, 0xf108, 0xf109, 0xf10a, 0xf10b, 0xf10c, 0xf10d, 0xf202,
+ 0xf11c, 0xf110, 0xf111, 0xf112, 0xf113, 0xf200, 0xf200, 0xf040,
+ 0xf200, 0xf024, 0xf200, 0xf200, 0xf07b, 0xf05b, 0xf05d, 0xf07d,
+ 0xf05c, 0xf200, 0xf200, 0xf114, 0xf115, 0xf116, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xfb71, 0xfb77, 0xf918, 0xfb72, 0xfb74,
+ 0xfb79, 0xfb75, 0xfb69, 0xfb6f, 0xfb70, 0xf200, 0xf07e, 0xf201,
+ 0xf117, 0xf118, 0xf119, 0xf911, 0xf912, 0xf913, 0xf30b, 0xf702,
+ 0xf207, 0xf914, 0xfb73, 0xf917, 0xf919, 0xfb67, 0xfb68, 0xfb6a,
+ 0xfb6b, 0xfb6c, 0xf200, 0xf200, 0xf200, 0xf603, 0xf90e, 0xf90f,
+ 0xf910, 0xf200, 0xf700, 0xf200, 0xfb7a, 0xfb78, 0xf916, 0xfb76,
+ 0xf915, 0xfb6e, 0xfb6d, 0xf200, 0xf200, 0xf200, 0xf200, 0xf601,
+ 0xf600, 0xf602, 0xf90b, 0xf90c, 0xf90d, 0xf30e, 0xf200, 0xf703,
+ 0xf200, 0xf200, 0xf200, 0xf90a, 0xf310, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+};
+
+static u_short ctrl_map[NR_KEYS] = {
+ 0xf200, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104, 0xf105, 0xf106,
+ 0xf107, 0xf108, 0xf109, 0xf10a, 0xf10b, 0xf10c, 0xf10d, 0xf204,
+ 0xf11c, 0xf110, 0xf111, 0xf112, 0xf113, 0xf81b, 0xf200, 0xf000,
+ 0xf01b, 0xf01c, 0xf01d, 0xf01e, 0xf01f, 0xf07f, 0xf200, 0xf200,
+ 0xf01f, 0xf200, 0xf008, 0xf114, 0xf115, 0xf116, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf011, 0xf017, 0xf005, 0xf012, 0xf014,
+ 0xf019, 0xf015, 0xf009, 0xf00f, 0xf010, 0xf01b, 0xf01d, 0xf201,
+ 0xf117, 0xf118, 0xf119, 0xf307, 0xf308, 0xf309, 0xf30b, 0xf702,
+ 0xf207, 0xf001, 0xf013, 0xf004, 0xf006, 0xf007, 0xf008, 0xf00a,
+ 0xf00b, 0xf00c, 0xf200, 0xf007, 0xf01c, 0xf603, 0xf304, 0xf305,
+ 0xf306, 0xf200, 0xf700, 0xf200, 0xf01a, 0xf018, 0xf003, 0xf016,
+ 0xf002, 0xf00e, 0xf00d, 0xf200, 0xf20e, 0xf07f, 0xf200, 0xf601,
+ 0xf600, 0xf602, 0xf301, 0xf302, 0xf303, 0xf30e, 0xf200, 0xf703,
+ 0xf000, 0xf200, 0xf200, 0xf300, 0xf310, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+};
+
+static u_short shift_ctrl_map[NR_KEYS] = {
+ 0xf200, 0xf100, 0xf101, 0xf102, 0xf103, 0xf104, 0xf105, 0xf106,
+ 0xf107, 0xf108, 0xf109, 0xf10a, 0xf10b, 0xf10c, 0xf10d, 0xf200,
+ 0xf11c, 0xf110, 0xf111, 0xf112, 0xf113, 0xf200, 0xf200, 0xf000,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf01f, 0xf200, 0xf200, 0xf114, 0xf115, 0xf116, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf011, 0xf017, 0xf005, 0xf012, 0xf014,
+ 0xf019, 0xf015, 0xf009, 0xf00f, 0xf010, 0xf200, 0xf200, 0xf201,
+ 0xf117, 0xf118, 0xf119, 0xf307, 0xf308, 0xf309, 0xf30b, 0xf702,
+ 0xf207, 0xf001, 0xf013, 0xf004, 0xf006, 0xf007, 0xf008, 0xf00a,
+ 0xf00b, 0xf00c, 0xf200, 0xf200, 0xf200, 0xf603, 0xf304, 0xf305,
+ 0xf306, 0xf200, 0xf700, 0xf200, 0xf01a, 0xf018, 0xf003, 0xf016,
+ 0xf002, 0xf00e, 0xf00d, 0xf200, 0xf200, 0xf200, 0xf200, 0xf601,
+ 0xf600, 0xf602, 0xf301, 0xf302, 0xf303, 0xf30e, 0xf200, 0xf703,
+ 0xf200, 0xf200, 0xf200, 0xf300, 0xf310, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+};
+
+static u_short alt_map[NR_KEYS] = {
+ 0xf200, 0xf500, 0xf501, 0xf502, 0xf503, 0xf504, 0xf505, 0xf506,
+ 0xf507, 0xf508, 0xf509, 0xf50a, 0xf50b, 0xf50c, 0xf50d, 0xf200,
+ 0xf11c, 0xf510, 0xf511, 0xf512, 0xf513, 0xf01b, 0xf831, 0xf832,
+ 0xf833, 0xf834, 0xf835, 0xf836, 0xf837, 0xf838, 0xf839, 0xf830,
+ 0xf82d, 0xf83d, 0xf87f, 0xf114, 0xf115, 0xf116, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf809, 0xf871, 0xf877, 0xf865, 0xf872, 0xf874,
+ 0xf879, 0xf875, 0xf869, 0xf86f, 0xf870, 0xf85b, 0xf85d, 0xf80d,
+ 0xf117, 0xf118, 0xf119, 0xf907, 0xf908, 0xf909, 0xf30b, 0xf702,
+ 0xf207, 0xf861, 0xf873, 0xf864, 0xf866, 0xf867, 0xf868, 0xf86a,
+ 0xf86b, 0xf86c, 0xf83b, 0xf827, 0xf85c, 0xf603, 0xf904, 0xf905,
+ 0xf906, 0xf200, 0xf700, 0xf200, 0xf87a, 0xf878, 0xf863, 0xf876,
+ 0xf862, 0xf86e, 0xf86d, 0xf82c, 0xf82e, 0xf82f, 0xf200, 0xf210,
+ 0xf600, 0xf211, 0xf901, 0xf902, 0xf903, 0xf30e, 0xf200, 0xf703,
+ 0xf820, 0xf200, 0xf200, 0xf900, 0xf310, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+};
+
+static u_short ctrl_alt_map[NR_KEYS] = {
+ 0xf200, 0xf500, 0xf501, 0xf502, 0xf503, 0xf504, 0xf505, 0xf506,
+ 0xf507, 0xf508, 0xf509, 0xf50a, 0xf50b, 0xf50c, 0xf50d, 0xf200,
+ 0xf11c, 0xf510, 0xf511, 0xf512, 0xf513, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf114, 0xf115, 0xf20c, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf811, 0xf817, 0xf805, 0xf812, 0xf814,
+ 0xf819, 0xf815, 0xf809, 0xf80f, 0xf810, 0xf200, 0xf200, 0xf201,
+ 0xf117, 0xf118, 0xf119, 0xf307, 0xf308, 0xf309, 0xf30b, 0xf702,
+ 0xf207, 0xf801, 0xf813, 0xf804, 0xf806, 0xf807, 0xf808, 0xf80a,
+ 0xf80b, 0xf80c, 0xf200, 0xf200, 0xf200, 0xf603, 0xf304, 0xf305,
+ 0xf306, 0xf200, 0xf700, 0xf200, 0xf81a, 0xf818, 0xf803, 0xf816,
+ 0xf802, 0xf80e, 0xf80d, 0xf200, 0xf200, 0xf200, 0xf200, 0xf601,
+ 0xf600, 0xf602, 0xf301, 0xf302, 0xf303, 0xf30e, 0xf200, 0xf703,
+ 0xf200, 0xf200, 0xf200, 0xf300, 0xf20c, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+ 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200, 0xf200,
+};
+
+ushort *key_maps[MAX_NR_KEYMAPS] = {
+ plain_map, shift_map, altgr_map, 0,
+ ctrl_map, shift_ctrl_map, 0, 0,
+ alt_map, 0, 0, 0,
+ ctrl_alt_map, 0
+};
+
+unsigned int keymap_count = 7;
+
+
+/*
+ * Philosophy: most people do not define more strings, but they who do
+ * often want quite a lot of string space. So, we statically allocate
+ * the default and allocate dynamically in chunks of 512 bytes.
+ */
+
+char func_buf[] = {
+ '\033', '[', '[', 'A', 0,
+ '\033', '[', '[', 'B', 0,
+ '\033', '[', '[', 'C', 0,
+ '\033', '[', '[', 'D', 0,
+ '\033', '[', '[', 'E', 0,
+ '\033', '[', '1', '7', '~', 0,
+ '\033', '[', '1', '8', '~', 0,
+ '\033', '[', '1', '9', '~', 0,
+ '\033', '[', '2', '0', '~', 0,
+ '\033', '[', '2', '1', '~', 0,
+ '\033', '[', '2', '3', '~', 0,
+ '\033', '[', '2', '4', '~', 0,
+ '\033', '[', '2', '5', '~', 0,
+ '\033', '[', '2', '6', '~', 0,
+ '\033', '[', '2', '8', '~', 0,
+ '\033', '[', '2', '9', '~', 0,
+ '\033', '[', '3', '1', '~', 0,
+ '\033', '[', '3', '2', '~', 0,
+ '\033', '[', '3', '3', '~', 0,
+ '\033', '[', '3', '4', '~', 0,
+ '\033', '[', '1', '~', 0,
+ '\033', '[', '2', '~', 0,
+ '\033', '[', '3', '~', 0,
+ '\033', '[', '4', '~', 0,
+ '\033', '[', '5', '~', 0,
+ '\033', '[', '6', '~', 0,
+ '\033', '[', 'M', 0,
+ '\033', '[', 'P', 0,
+};
+
+
+char *funcbufptr = func_buf;
+int funcbufsize = sizeof(func_buf);
+int funcbufleft = 0; /* space left */
+
+char *func_table[MAX_NR_FUNC] = {
+ func_buf + 0,
+ func_buf + 5,
+ func_buf + 10,
+ func_buf + 15,
+ func_buf + 20,
+ func_buf + 25,
+ func_buf + 31,
+ func_buf + 37,
+ func_buf + 43,
+ func_buf + 49,
+ func_buf + 55,
+ func_buf + 61,
+ func_buf + 67,
+ func_buf + 73,
+ func_buf + 79,
+ func_buf + 85,
+ func_buf + 91,
+ func_buf + 97,
+ func_buf + 103,
+ func_buf + 109,
+ func_buf + 115,
+ func_buf + 120,
+ func_buf + 125,
+ func_buf + 130,
+ func_buf + 135,
+ func_buf + 140,
+ func_buf + 145,
+ 0,
+ 0,
+ func_buf + 149,
+ 0,
+};
+
+struct kbdiacr accent_table[MAX_DIACR] = {
+ {'`', 'A', 'À'}, {'`', 'a', 'à'},
+ {'\'', 'A', 'Á'}, {'\'', 'a', 'á'},
+ {'^', 'A', 'Â'}, {'^', 'a', 'â'},
+ {'~', 'A', 'Ã'}, {'~', 'a', 'ã'},
+ {'"', 'A', 'Ä'}, {'"', 'a', 'ä'},
+ {'O', 'A', 'Å'}, {'o', 'a', 'å'},
+ {'0', 'A', 'Å'}, {'0', 'a', 'å'},
+ {'A', 'A', 'Å'}, {'a', 'a', 'å'},
+ {'A', 'E', 'Æ'}, {'a', 'e', 'æ'},
+ {',', 'C', 'Ç'}, {',', 'c', 'ç'},
+ {'`', 'E', 'È'}, {'`', 'e', 'è'},
+ {'\'', 'E', 'É'}, {'\'', 'e', 'é'},
+ {'^', 'E', 'Ê'}, {'^', 'e', 'ê'},
+ {'"', 'E', 'Ë'}, {'"', 'e', 'ë'},
+ {'`', 'I', 'Ì'}, {'`', 'i', 'ì'},
+ {'\'', 'I', 'Í'}, {'\'', 'i', 'í'},
+ {'^', 'I', 'Î'}, {'^', 'i', 'î'},
+ {'"', 'I', 'Ï'}, {'"', 'i', 'ï'},
+ {'-', 'D', 'Ð'}, {'-', 'd', 'ð'},
+ {'~', 'N', 'Ñ'}, {'~', 'n', 'ñ'},
+ {'`', 'O', 'Ò'}, {'`', 'o', 'ò'},
+ {'\'', 'O', 'Ó'}, {'\'', 'o', 'ó'},
+ {'^', 'O', 'Ô'}, {'^', 'o', 'ô'},
+ {'~', 'O', 'Õ'}, {'~', 'o', 'õ'},
+ {'"', 'O', 'Ö'}, {'"', 'o', 'ö'},
+ {'/', 'O', 'Ø'}, {'/', 'o', 'ø'},
+ {'`', 'U', 'Ù'}, {'`', 'u', 'ù'},
+ {'\'', 'U', 'Ú'}, {'\'', 'u', 'ú'},
+ {'^', 'U', 'Û'}, {'^', 'u', 'û'},
+ {'"', 'U', 'Ü'}, {'"', 'u', 'ü'},
+ {'\'', 'Y', 'Ý'}, {'\'', 'y', 'ý'},
+ {'T', 'H', 'Þ'}, {'t', 'h', 'þ'},
+ {'s', 's', 'ß'}, {'"', 'y', 'ÿ'},
+ {'s', 'z', 'ß'}, {'i', 'j', 'ÿ'},
+};
+
+unsigned int accent_table_size = 68;
diff --git a/drivers/tc/lk201-map.map b/drivers/tc/lk201-map.map
new file mode 100644
index 0000000..2c636b4
--- /dev/null
+++ b/drivers/tc/lk201-map.map
@@ -0,0 +1,356 @@
+# Default kernel keymap. This uses 7 modifier combinations.
+keymaps 0-2,4-5,8,12
+# Change the above line into
+# keymaps 0-2,4-6,8,12
+# in case you want the entries
+# altgr control keycode 83 = Boot
+# altgr control keycode 111 = Boot
+# below.
+#
+# In fact AltGr is used very little, and one more keymap can
+# be saved by mapping AltGr to Alt (and adapting a few entries):
+# keycode 100 = Alt
+#
+keycode 0x15 = grave tilde
+ alt keycode 0x15 = Escape
+ control keycode 0x15 = Meta_Escape
+keycode 0x16 = one exclam
+ alt keycode 0x16 = Meta_one
+keycode 0x17 = two at at
+ control keycode 0x17 = nul
+ shift control keycode 0x17 = nul
+ alt keycode 0x17 = Meta_two
+keycode 0x18 = three numbersign
+ control keycode 0x18 = Escape
+ alt keycode 0x18 = Meta_three
+keycode 0x19 = four dollar dollar
+ control keycode 0x19 = Control_backslash
+ alt keycode 0x19 = Meta_four
+keycode 0x1a = five percent
+ control keycode 0x1a = Control_bracketright
+ alt keycode 0x1a = Meta_five
+keycode 0x1b = six asciicircum
+ control keycode 0x1b = Control_asciicircum
+ alt keycode 0x1b = Meta_six
+keycode 0x1c = seven ampersand braceleft
+ control keycode 0x1c = Control_underscore
+ alt keycode 0x1c = Meta_seven
+keycode 0x1d = eight asterisk bracketleft
+ control keycode 0x1d = Delete
+ alt keycode 0x1d = Meta_eight
+keycode 0x1e = nine parenleft bracketright
+ alt keycode 0x1e = Meta_nine
+keycode 0x1f = zero parenright braceright
+ alt keycode 0x1f = Meta_zero
+keycode 0x20 = minus underscore backslash
+ control keycode 0x20 = Control_underscore
+ shift control keycode 0x20 = Control_underscore
+ alt keycode 0x20 = Meta_minus
+keycode 0x21 = equal plus
+ alt keycode 0x21 = Meta_equal
+keycode 0x22 = Delete Delete
+ control keycode 0x22 = BackSpace
+ alt keycode 0x22 = Meta_Delete
+keycode 0x2a = Tab Tab
+ alt keycode 0x2a = Meta_Tab
+keycode 0x2b = q
+keycode 0x2c = w
+keycode 0x2d = e
+ altgr keycode 0x2d = Hex_E
+keycode 0x2e = r
+keycode 0x2f = t
+keycode 0x30 = y
+keycode 0x31 = u
+keycode 0x32 = i
+keycode 0x33 = o
+keycode 0x34 = p
+keycode 0x35 = bracketleft braceleft
+ control keycode 0x35 = Escape
+ alt keycode 0x35 = Meta_bracketleft
+keycode 0x36 = bracketright braceright asciitilde
+ control keycode 0x36 = Control_bracketright
+ alt keycode 0x36 = Meta_bracketright
+keycode 0x37 = Return
+ alt keycode 0x37 = Meta_Control_m
+keycode 0x3f = Control
+keycode 0x41 = a
+ altgr keycode 0x41 = Hex_A
+keycode 0x42 = s
+keycode 0x43 = d
+ altgr keycode 0x43 = Hex_D
+keycode 0x44 = f
+ altgr keycode 0x44 = Hex_F
+keycode 0x45 = g
+keycode 0x46 = h
+keycode 0x47 = j
+keycode 0x48 = k
+keycode 0x49 = l
+keycode 0x4a = semicolon colon
+ alt keycode 0x4a = Meta_semicolon
+keycode 0x4b = apostrophe quotedbl
+ control keycode 0x4b = Control_g
+ alt keycode 0x4b = Meta_apostrophe
+# keycode 41 = grave asciitilde
+# control keycode 41 = nul
+# alt keycode 41 = Meta_grave
+keycode 0x52 = Shift
+keycode 0x4c = backslash bar
+ control keycode 0x4c = Control_backslash
+ alt keycode 0x4c = Meta_backslash
+keycode 0x53 = greater less
+keycode 0x54 = z
+keycode 0x55 = x
+keycode 0x56 = c
+ altgr keycode 0x56 = Hex_C
+keycode 0x57 = v
+keycode 0x58 = b
+ altgr keycode 0x58 = Hex_B
+keycode 0x59 = n
+keycode 0x5a = m
+keycode 0x5b = comma less
+ alt keycode 0x5b = Meta_comma
+keycode 0x5c = period greater
+ control keycode 0x5c = Compose
+ alt keycode 0x5c = Meta_period
+keycode 0x5d = slash question
+ control keycode 0x5d = Delete
+ alt keycode 0x5d = Meta_slash
+
+keycode 0x67 = Alt
+keycode 0x68 = space space
+ control keycode 0x68 = nul
+ alt keycode 0x68 = Meta_space
+keycode 0x40 = Caps_Lock
+keycode 0x01 = F1
+ control keycode 0x01 = F1
+ alt keycode 0x01 = Console_1
+ control alt keycode 0x01 = Console_1
+keycode 0x02 = F2
+ control keycode 0x02 = F2
+ alt keycode 0x02 = Console_2
+ control alt keycode 0x02 = Console_2
+keycode 0x03 = F3
+ control keycode 0x03 = F3
+ alt keycode 0x03 = Console_3
+ control alt keycode 0x03 = Console_3
+keycode 0x04 = F4
+ control keycode 0x04 = F4
+ alt keycode 0x04 = Console_4
+ control alt keycode 0x04 = Console_4
+keycode 0x05 = F5
+ control keycode 0x05 = F5
+ alt keycode 0x05 = Console_5
+ control alt keycode 0x05 = Console_5
+keycode 0x06 = F6
+ control keycode 0x06 = F6
+ alt keycode 0x06 = Console_6
+ control alt keycode 0x06 = Console_6
+keycode 0x07 = F7
+ control keycode 0x07 = F7
+ alt keycode 0x07 = Console_7
+ control alt keycode 0x07 = Console_7
+keycode 0x08 = F8
+ control keycode 0x08 = F8
+ alt keycode 0x08 = Console_8
+ control alt keycode 0x08 = Console_8
+keycode 0x09 = F9
+ control keycode 0x09 = F9
+ alt keycode 0x09 = Console_9
+ control alt keycode 0x09 = Console_9
+keycode 0x0a = F10
+ control keycode 0x0a = F10
+ alt keycode 0x0a = Console_10
+ control alt keycode 0x0a = Console_10
+keycode 0x0b = F11
+ control keycode 0x0b = F11
+ alt keycode 0x0b = Console_11
+ control alt keycode 0x0b = Console_11
+keycode 0x0c = F12
+ control keycode 0x0c = F12
+ alt keycode 0x0c = Console_12
+ control alt keycode 0x0c = Console_12
+keycode 0x0d = F13
+ control keycode 0x0d = F13
+ alt keycode 0x0d = Console_13
+ control alt keycode 0x0d = Console_13
+keycode 0x0e = F14
+ control keycode 0x0e = F14
+ alt keycode 0x0e = Console_14
+ control alt keycode 0x0e = Console_14
+
+keycode 0x11 = F17
+ control keycode 0x11 = F17
+ alt keycode 0x11 = Console_17
+ control alt keycode 0x11 = Console_17
+keycode 0x12 = F18
+ control keycode 0x12 = F18
+ alt keycode 0x12 = Console_18
+ control alt keycode 0x12 = Console_18
+keycode 0x13 = F19
+ control keycode 0x13 = F19
+ alt keycode 0x13 = Console_19
+ control alt keycode 0x13 = Console_19
+keycode 0x14 = F20
+ control keycode 0x14 = F20
+ alt keycode 0x14 = Console_20
+ control alt keycode 0x14 = Console_20
+
+
+keycode 0x3b = KP_7
+ alt keycode 0x3b = Ascii_7
+ altgr keycode 0x3b = Hex_7
+keycode 0x3c = KP_8
+ alt keycode 0x3c = Ascii_8
+ altgr keycode 0x3c = Hex_8
+keycode 0x3d = KP_9
+ alt keycode 0x3d = Ascii_9
+ altgr keycode 0x3d = Hex_9
+keycode 0x3e = KP_Subtract
+keycode 0x4e = KP_4
+ alt keycode 0x4e = Ascii_4
+ altgr keycode 0x4e = Hex_4
+keycode 0x4f = KP_5
+ alt keycode 0x4f = Ascii_5
+ altgr keycode 0x4f = Hex_5
+keycode 0x50 = KP_6
+ alt keycode 0x50 = Ascii_6
+ altgr keycode 0x50 = Hex_6
+keycode 0x62 = KP_1
+ alt keycode 0x62 = Ascii_1
+ altgr keycode 0x62 = Hex_1
+keycode 0x63 = KP_2
+ alt keycode 0x63 = Ascii_2
+ altgr keycode 0x63 = Hex_2
+keycode 0x64 = KP_3
+ alt keycode 0x64 = Ascii_3
+ altgr keycode 0x64 = Hex_3
+keycode 0x6b = KP_0
+ alt keycode 0x6b = Ascii_0
+ altgr keycode 0x6b = Hex_0
+keycode 0x6c = KP_Period
+# altgr control keycode 0x6c = Boot
+ control alt keycode 0x6c = Boot
+keycode 0x65 = KP_Enter
+
+keycode 0x3f = Control
+
+# keycode 100 = AltGr
+
+keycode 0x23 = Find
+keycode 0x4d = Up
+keycode 0x39 = Prior
+ shift keycode 0x39 = Scroll_Backward
+keycode 0x5f = Left
+ alt keycode 0x5f = Decr_Console
+keycode 0x61 = Right
+ alt keycode 0x61 = Incr_Console
+keycode 0x38 = Select
+keycode 0x60 = Down
+keycode 0x3a = Next
+ shift keycode 0x3a = Scroll_Forward
+keycode 0x24 = Insert
+keycode 0x25 = Remove
+# altgr control keycode 0x25 = Boot
+ control alt keycode 0x25 = Boot
+
+keycode 0x0f = Help Show_Memory Show_Registers
+ control keycode 0x0f = Show_State
+
+keycode 0x10 = Do
+
+string F1 = "\033[[A"
+string F2 = "\033[[B"
+string F3 = "\033[[C"
+string F4 = "\033[[D"
+string F5 = "\033[[E"
+string F6 = "\033[17~"
+string F7 = "\033[18~"
+string F8 = "\033[19~"
+string F9 = "\033[20~"
+string F10 = "\033[21~"
+string F11 = "\033[23~"
+string F12 = "\033[24~"
+string F13 = "\033[25~"
+string F14 = "\033[26~"
+string F15 = "\033[28~"
+string F16 = "\033[29~"
+string F17 = "\033[31~"
+string F18 = "\033[32~"
+string F19 = "\033[33~"
+string F20 = "\033[34~"
+string Find = "\033[1~"
+string Insert = "\033[2~"
+string Remove = "\033[3~"
+string Select = "\033[4~"
+string Prior = "\033[5~"
+string Next = "\033[6~"
+string Macro = "\033[M"
+string Pause = "\033[P"
+compose '`' 'A' to 'À'
+compose '`' 'a' to 'à'
+compose '\'' 'A' to 'Á'
+compose '\'' 'a' to 'á'
+compose '^' 'A' to 'Â'
+compose '^' 'a' to 'â'
+compose '~' 'A' to 'Ã'
+compose '~' 'a' to 'ã'
+compose '"' 'A' to 'Ä'
+compose '"' 'a' to 'ä'
+compose 'O' 'A' to 'Å'
+compose 'o' 'a' to 'å'
+compose '0' 'A' to 'Å'
+compose '0' 'a' to 'å'
+compose 'A' 'A' to 'Å'
+compose 'a' 'a' to 'å'
+compose 'A' 'E' to 'Æ'
+compose 'a' 'e' to 'æ'
+compose ',' 'C' to 'Ç'
+compose ',' 'c' to 'ç'
+compose '`' 'E' to 'È'
+compose '`' 'e' to 'è'
+compose '\'' 'E' to 'É'
+compose '\'' 'e' to 'é'
+compose '^' 'E' to 'Ê'
+compose '^' 'e' to 'ê'
+compose '"' 'E' to 'Ë'
+compose '"' 'e' to 'ë'
+compose '`' 'I' to 'Ì'
+compose '`' 'i' to 'ì'
+compose '\'' 'I' to 'Í'
+compose '\'' 'i' to 'í'
+compose '^' 'I' to 'Î'
+compose '^' 'i' to 'î'
+compose '"' 'I' to 'Ï'
+compose '"' 'i' to 'ï'
+compose '-' 'D' to 'Ð'
+compose '-' 'd' to 'ð'
+compose '~' 'N' to 'Ñ'
+compose '~' 'n' to 'ñ'
+compose '`' 'O' to 'Ò'
+compose '`' 'o' to 'ò'
+compose '\'' 'O' to 'Ó'
+compose '\'' 'o' to 'ó'
+compose '^' 'O' to 'Ô'
+compose '^' 'o' to 'ô'
+compose '~' 'O' to 'Õ'
+compose '~' 'o' to 'õ'
+compose '"' 'O' to 'Ö'
+compose '"' 'o' to 'ö'
+compose '/' 'O' to 'Ø'
+compose '/' 'o' to 'ø'
+compose '`' 'U' to 'Ù'
+compose '`' 'u' to 'ù'
+compose '\'' 'U' to 'Ú'
+compose '\'' 'u' to 'ú'
+compose '^' 'U' to 'Û'
+compose '^' 'u' to 'û'
+compose '"' 'U' to 'Ü'
+compose '"' 'u' to 'ü'
+compose '\'' 'Y' to 'Ý'
+compose '\'' 'y' to 'ý'
+compose 'T' 'H' to 'Þ'
+compose 't' 'h' to 'þ'
+compose 's' 's' to 'ß'
+compose '"' 'y' to 'ÿ'
+compose 's' 'z' to 'ß'
+compose 'i' 'j' to 'ÿ'
diff --git a/drivers/tc/lk201-remap.c b/drivers/tc/lk201-remap.c
new file mode 100644
index 0000000..d39098c
--- /dev/null
+++ b/drivers/tc/lk201-remap.c
@@ -0,0 +1,172 @@
+/*
+ * Keyboard mappings for DEC LK201/401/501 keyboards
+ *
+ * 17.05.99 Michael Engel (engel@unix-ag.org)
+ *
+ * DEC US keyboards generate keycodes in the range 0x55 - 0xfb
+ *
+ * This conflicts with Linux scancode conventions which define
+ * 0x00-0x7f as "normal" and 0x80-0xff as "shifted" scancodes, so we
+ * have to remap the keycodes to 0x00-0x7f with the scancodeRemap
+ * array. The generated scancode is simply the number of the key counted
+ * from the left upper to the right lower corner of the keyboard ...
+ *
+ * These scancodes are then being remapped (I hope ;-)) with the
+ * lk501*map[] arrays which define scancode -> Linux code mapping
+ *
+ * Oh man is this horrible ;-)
+ *
+ * Scancodes with dual labels exist for keyboards as follows:
+ *
+ * code: left label / right label
+ *
+ * 0x73: LKx01, LK421 / LK443, LK444
+ * 0x74: LKx01, LK421 / LK443, LK444
+ * 0x7c: LKx01, LK421 / LK443, LK444
+ * 0x8a: LKx01, LK421 / LK443, LK444
+ * 0x8b: LKx01, LK421 / LK443, LK444
+ * 0x8c: LKx01, LK421 / LK443, LK444
+ * 0x8d: LKx01, LK421 / LK443, LK444
+ * 0x8e: LKx01, LK421 / LK443, LK444
+ * 0x8f: LKx01, LK421 / LK443, LK444
+ * 0x9c: LKx01, LK421 / LK443, LK444
+ * 0xa1: LKx01, LK421 / LK443, LK444
+ * 0xa2: LKx01, LK421 / LK443, LK444
+ * 0xa3: LKx01, LK421 / LK443, LK444
+ * 0xa4: LKx01, LK421 / LK443, LK444
+ * 0xad: LK421 / LK443, LK444
+ * 0xc9: LKx01, LK421, LK443 / LK444
+ * 0xf7: LKx01, LK443 / LK444
+ */
+
+unsigned char scancodeRemap[256] = {
+/* ----- */
+/* 0 */ 0, 0, 0, 0,
+/* ----- */
+/* 4 */ 0, 0, 0, 0,
+/* ----- */
+/* 8 */ 0, 0, 0, 0,
+/* ----- */
+/* c */ 0, 0, 0, 0,
+/* ----- */
+/* 10 */ 0, 0, 0, 0,
+/* ----- */
+/* 14 */ 0, 0, 0, 0,
+/* ----- */
+/* 18 */ 0, 0, 0, 0,
+/* ----- */
+/* 1c */ 0, 0, 0, 0,
+/* ----- */
+/* 20 */ 0, 0, 0, 0,
+/* ----- */
+/* 24 */ 0, 0, 0, 0,
+/* ----- */
+/* 28 */ 0, 0, 0, 0,
+/* ----- */
+/* 2c */ 0, 0, 0, 0,
+/* ----- */
+/* 30 */ 0, 0, 0, 0,
+/* ----- */
+/* 34 */ 0, 0, 0, 0,
+/* ----- */
+/* 38 */ 0, 0, 0, 0,
+/* ----- */
+/* 3c */ 0, 0, 0, 0,
+/* ----- */
+/* 40 */ 0, 0, 0, 0,
+/* ----- */
+/* 44 */ 0, 0, 0, 0,
+/* ----- */
+/* 48 */ 0, 0, 0, 0,
+/* ----- */
+/* 4c */ 0, 0, 0, 0,
+/* ----- */
+/* 50 */ 0, 0, 0, 0,
+/* ----- ESC F1 F2 */
+/* 54 */ 0, 0, 0x01, 0x02,
+/* ----- F3 F4 F5 */
+/* 58 */ 0x03, 0x04, 0x05, 0,
+/* ----- */
+/* 5c */ 0, 0, 0, 0,
+/* ----- */
+/* 60 */ 0, 0, 0, 0,
+/* ----- F6 F7 F8 F9 */
+/* 64 */ 0x06, 0x07, 0x08, 0x09,
+/* ----- F10 */
+/* 68 */ 0x0a, 0, 0, 0,
+/* ----- */
+/* 6c */ 0, 0, 0, 0,
+/* ----- F11 F12 F13/PRNT SCRN */
+/* 70 */ 0, 0x0b, 0x0c, 0x0d,
+/* ----- F14/SCRL LCK */
+/* 74 */ 0x0e, 0, 0, 0,
+/* ----- */
+/* 78 */ 0, 0, 0, 0,
+/* ----- HELP/PAUSE DO */
+/* 7c */ 0x0f, 0x10, 0, 0,
+/* ----- F17 F18 F19 F20 */
+/* 80 */ 0x11, 0x12, 0x13, 0x14,
+/* ----- */
+/* 84 */ 0, 0, 0, 0,
+/* ----- FIND/INSERT INSERT/HOME */
+/* 88 */ 0, 0, 0x23, 0x24,
+/* ----- REMOVE/PG UP SELECT/DELETE PREVIOUS/END NEXT/PG DN */
+/* 8c */ 0x25, 0x38, 0x39, 0x3a,
+/* ----- KP 0 */
+/* 90 */ 0, 0, 0x6b, 0,
+/* ----- KP . KP ENTER KP 1 KP 2 */
+/* 94 */ 0x6c, 0x65, 0x62, 0x63,
+/* ----- KP 3 KP 4 KP 5 KP 6 */
+/* 98 */ 0x64, 0x4e, 0x4f, 0x50,
+/* ----- KP ,/KP + KP 7 KP 8 KP 9 */
+/* 9c */ 0x51, 0x3b, 0x3c, 0x3d,
+/* ----- KP - KP F1/NUM LCK KP F2/KP / KP F3/KP * */
+/* a0 */ 0x3e, 0x26, 0x27, 0x28,
+/* ----- KP F4/KP - LEFT */
+/* a4 */ 0x29, 0, 0, 0x5f,
+/* ----- RIGHT DOWN UP SHIFT Rt */
+/* a8 */ 0x61, 0x60, 0x4d, 0x5e,
+/* ----- ALT COMP Rt/CTRL Rt SHIFT CONTROL */
+/* ac */ 0, 0, 0x52, 0x3f,
+/* ----- CAPS COMPOSE ALT Rt */
+/* b0 */ 0x40, 0x67, 0, 0,
+/* ----- */
+/* b4 */ 0, 0, 0, 0,
+/* ----- */
+/* b8 */ 0, 0, 0, 0,
+/* ----- BKSP RET TAB ` */
+/* bc */ 0x22, 0x37, 0x2a, 0x15,
+/* ----- 1 q a z */
+/* c0 */ 0x16, 0x2b, 0x41, 0x54,
+/* ----- 2 w s */
+/* c4 */ 0, 0x17, 0x2c, 0x42,
+/* ----- x </\\ 3 */
+/* c8 */ 0x55, 0x53, 0, 0x18,
+/* ----- e d c */
+/* cc */ 0x2d, 0x43, 0x56, 0,
+/* ----- 4 r f v */
+/* d0 */ 0x19, 0x2e, 0x44, 0x57,
+/* ----- SPACE 5 t */
+/* d4 */ 0x68, 0, 0x1a, 0x2f,
+/* ----- g b 6 */
+/* d8 */ 0x45, 0x58, 0, 0x1b,
+/* ----- y h n */
+/* dc */ 0x30, 0x46, 0x59, 0,
+/* ----- 7 u j m */
+/* e0 */ 0x1c, 0x31, 0x47, 0x5a,
+/* ----- 8 i k */
+/* e4 */ 0, 0x1d, 0x32, 0x48,
+/* ----- , 9 o */
+/* e8 */ 0x5b, 0, 0x1e, 0x33,
+/* ----- l . 0 */
+/* ec */ 0x49, 0x5c, 0, 0x1f,
+/* ----- p ; / */
+/* f0 */ 0x34, 0, 0x4a, 0x5d,
+/* ----- = ] \\/\' */
+/* f4 */ 0, 0x21, 0x36, 0x4c,
+/* ----- - [ \' */
+/* f8 */ 0, 0x20, 0x35, 0x4b,
+/* ----- */
+/* fc */ 0, 0, 0, 0,
+};
+
diff --git a/drivers/tc/lk201.c b/drivers/tc/lk201.c
new file mode 100644
index 0000000..cf10d5c
--- /dev/null
+++ b/drivers/tc/lk201.c
@@ -0,0 +1,441 @@
+/*
+ *
+ * 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) 1999-2002 Harald Koerfgen <hkoerfg@web.de>
+ * Copyright (C) 2001, 2002, 2003, 2004 Maciej W. Rozycki
+ */
+
+#include <linux/config.h>
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/kbd_ll.h>
+#include <linux/kbd_kern.h>
+#include <linux/vt_kern.h>
+
+#include <asm/keyboard.h>
+#include <asm/dec/tc.h>
+#include <asm/dec/machtype.h>
+#include <asm/dec/serial.h>
+
+#include "lk201.h"
+
+/*
+ * Only handle DECstations that have an LK201 interface.
+ * Maxine uses LK501 at the Access.Bus and various DECsystems
+ * have no keyboard interface at all.
+ */
+#define LK_IFACE (mips_machtype == MACH_DS23100 || \
+ mips_machtype == MACH_DS5000_200 || \
+ mips_machtype == MACH_DS5000_1XX || \
+ mips_machtype == MACH_DS5000_2X0)
+/*
+ * These use the Z8530 SCC. Others use the DZ11.
+ */
+#define LK_IFACE_ZS (mips_machtype == MACH_DS5000_1XX || \
+ mips_machtype == MACH_DS5000_2X0)
+
+/* Simple translation table for the SysRq keys */
+
+#ifdef CONFIG_MAGIC_SYSRQ
+/*
+ * Actually no translation at all, at least until we figure out
+ * how to define SysRq for LK201 and friends. --macro
+ */
+unsigned char lk201_sysrq_xlate[128];
+unsigned char *kbd_sysrq_xlate = lk201_sysrq_xlate;
+
+unsigned char kbd_sysrq_key = -1;
+#endif
+
+#define KEYB_LINE 3
+
+static int __init lk201_init(void *);
+static void __init lk201_info(void *);
+static void lk201_rx_char(unsigned char, unsigned char);
+
+static struct dec_serial_hook lk201_hook = {
+ .init_channel = lk201_init,
+ .init_info = lk201_info,
+ .rx_char = NULL,
+ .poll_rx_char = NULL,
+ .poll_tx_char = NULL,
+ .cflags = B4800 | CS8 | CSTOPB | CLOCAL,
+};
+
+/*
+ * This is used during keyboard initialisation
+ */
+static unsigned char lk201_reset_string[] = {
+ LK_CMD_SET_DEFAULTS,
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 1),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 2),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 3),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 4),
+ LK_CMD_MODE(LK_MODE_DOWN_UP, 5),
+ LK_CMD_MODE(LK_MODE_DOWN_UP, 6),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 7),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 8),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 9),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 10),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 11),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 12),
+ LK_CMD_MODE(LK_MODE_DOWN, 13),
+ LK_CMD_MODE(LK_MODE_RPT_DOWN, 14),
+ LK_CMD_DIS_KEYCLK,
+ LK_CMD_ENB_BELL, LK_PARAM_VOLUME(4),
+};
+
+static void *lk201_handle;
+
+static int lk201_send(unsigned char ch)
+{
+ if (lk201_hook.poll_tx_char(lk201_handle, ch)) {
+ printk(KERN_ERR "lk201: transmit timeout\n");
+ return -EIO;
+ }
+ return 0;
+}
+
+static inline int lk201_get_id(void)
+{
+ return lk201_send(LK_CMD_REQ_ID);
+}
+
+static int lk201_reset(void)
+{
+ int i, r;
+
+ for (i = 0; i < sizeof(lk201_reset_string); i++) {
+ r = lk201_send(lk201_reset_string[i]);
+ if (r < 0)
+ return r;
+ }
+ return 0;
+}
+
+static void lk201_report(unsigned char id[6])
+{
+ char *report = "lk201: keyboard attached, ";
+
+ switch (id[2]) {
+ case LK_STAT_PWRUP_OK:
+ printk(KERN_INFO "%sself-test OK\n", report);
+ break;
+ case LK_STAT_PWRUP_KDOWN:
+ /* The keyboard will resend the power-up ID
+ after all keys are released, so we don't
+ bother handling the error specially. Still
+ there may be a short-circuit inside.
+ */
+ printk(KERN_ERR "%skey down (stuck?), code: 0x%02x\n",
+ report, id[3]);
+ break;
+ case LK_STAT_PWRUP_ERROR:
+ printk(KERN_ERR "%sself-test failure\n", report);
+ break;
+ default:
+ printk(KERN_ERR "%sunknown error: 0x%02x\n",
+ report, id[2]);
+ }
+}
+
+static void lk201_id(unsigned char id[6])
+{
+ /*
+ * Report whether there is an LK201 or an LK401
+ * The LK401 has ALT keys...
+ */
+ switch (id[4]) {
+ case 1:
+ printk(KERN_INFO "lk201: LK201 detected\n");
+ break;
+ case 2:
+ printk(KERN_INFO "lk201: LK401 detected\n");
+ break;
+ case 3:
+ printk(KERN_INFO "lk201: LK443 detected\n");
+ break;
+ case 4:
+ printk(KERN_INFO "lk201: LK421 detected\n");
+ break;
+ default:
+ printk(KERN_WARNING
+ "lk201: unknown keyboard detected, ID %d\n", id[4]);
+ printk(KERN_WARNING "lk201: ... please report to "
+ "<linux-mips@linux-mips.org>\n");
+ }
+}
+
+#define DEFAULT_KEYB_REP_DELAY (250/5) /* [5ms] */
+#define DEFAULT_KEYB_REP_RATE 30 /* [cps] */
+
+static struct kbd_repeat kbdrate = {
+ DEFAULT_KEYB_REP_DELAY,
+ DEFAULT_KEYB_REP_RATE
+};
+
+static void parse_kbd_rate(struct kbd_repeat *r)
+{
+ if (r->delay <= 0)
+ r->delay = kbdrate.delay;
+ if (r->rate <= 0)
+ r->rate = kbdrate.rate;
+
+ if (r->delay < 5)
+ r->delay = 5;
+ if (r->delay > 630)
+ r->delay = 630;
+ if (r->rate < 12)
+ r->rate = 12;
+ if (r->rate > 127)
+ r->rate = 127;
+ if (r->rate == 125)
+ r->rate = 124;
+}
+
+static int write_kbd_rate(struct kbd_repeat *rep)
+{
+ int delay, rate;
+ int i;
+
+ delay = rep->delay / 5;
+ rate = rep->rate;
+ for (i = 0; i < 4; i++) {
+ if (lk201_hook.poll_tx_char(lk201_handle,
+ LK_CMD_RPT_RATE(i)))
+ return 1;
+ if (lk201_hook.poll_tx_char(lk201_handle,
+ LK_PARAM_DELAY(delay)))
+ return 1;
+ if (lk201_hook.poll_tx_char(lk201_handle,
+ LK_PARAM_RATE(rate)))
+ return 1;
+ }
+ return 0;
+}
+
+static int lk201_kbd_rate(struct kbd_repeat *rep)
+{
+ if (rep == NULL)
+ return -EINVAL;
+
+ parse_kbd_rate(rep);
+
+ if (write_kbd_rate(rep)) {
+ memcpy(rep, &kbdrate, sizeof(struct kbd_repeat));
+ return -EIO;
+ }
+
+ memcpy(&kbdrate, rep, sizeof(struct kbd_repeat));
+
+ return 0;
+}
+
+static void lk201_kd_mksound(unsigned int hz, unsigned int ticks)
+{
+ if (!ticks)
+ return;
+
+ /*
+ * Can't set frequency and we "approximate"
+ * duration by volume. ;-)
+ */
+ ticks /= HZ / 32;
+ if (ticks > 7)
+ ticks = 7;
+ ticks = 7 - ticks;
+
+ if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_ENB_BELL))
+ return;
+ if (lk201_hook.poll_tx_char(lk201_handle, LK_PARAM_VOLUME(ticks)))
+ return;
+ if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_BELL))
+ return;
+}
+
+void kbd_leds(unsigned char leds)
+{
+ unsigned char l = 0;
+
+ if (!lk201_handle) /* FIXME */
+ return;
+
+ /* FIXME -- Only Hold and Lock LEDs for now. --macro */
+ if (leds & LED_SCR)
+ l |= LK_LED_HOLD;
+ if (leds & LED_CAP)
+ l |= LK_LED_LOCK;
+
+ if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_LEDS_ON))
+ return;
+ if (lk201_hook.poll_tx_char(lk201_handle, LK_PARAM_LED_MASK(l)))
+ return;
+ if (lk201_hook.poll_tx_char(lk201_handle, LK_CMD_LEDS_OFF))
+ return;
+ if (lk201_hook.poll_tx_char(lk201_handle, LK_PARAM_LED_MASK(~l)))
+ return;
+}
+
+int kbd_setkeycode(unsigned int scancode, unsigned int keycode)
+{
+ return -EINVAL;
+}
+
+int kbd_getkeycode(unsigned int scancode)
+{
+ return -EINVAL;
+}
+
+int kbd_translate(unsigned char scancode, unsigned char *keycode,
+ char raw_mode)
+{
+ *keycode = scancode;
+ return 1;
+}
+
+char kbd_unexpected_up(unsigned char keycode)
+{
+ return 0x80;
+}
+
+static void lk201_rx_char(unsigned char ch, unsigned char fl)
+{
+ static unsigned char id[6];
+ static int id_i;
+
+ static int shift_state = 0;
+ static int prev_scancode;
+ unsigned char c = scancodeRemap[ch];
+
+ if (fl != TTY_NORMAL && fl != TTY_OVERRUN) {
+ printk(KERN_ERR "lk201: keyboard receive error: 0x%02x\n", fl);
+ return;
+ }
+
+ /* Assume this is a power-up ID. */
+ if (ch == LK_STAT_PWRUP_ID && !id_i) {
+ id[id_i++] = ch;
+ return;
+ }
+
+ /* Handle the power-up sequence. */
+ if (id_i) {
+ id[id_i++] = ch;
+ if (id_i == 4) {
+ /* OK, the power-up concluded. */
+ lk201_report(id);
+ if (id[2] == LK_STAT_PWRUP_OK)
+ lk201_get_id();
+ else {
+ id_i = 0;
+ printk(KERN_ERR "lk201: keyboard power-up "
+ "error, skipping initialization\n");
+ }
+ } else if (id_i == 6) {
+ /* We got the ID; report it and start operation. */
+ id_i = 0;
+ lk201_id(id);
+ lk201_reset();
+ }
+ return;
+ }
+
+ /* Everything else is a scancode/status response. */
+ id_i = 0;
+ switch (ch) {
+ case LK_STAT_RESUME_ERR:
+ case LK_STAT_ERROR:
+ case LK_STAT_INHIBIT_ACK:
+ case LK_STAT_TEST_ACK:
+ case LK_STAT_MODE_KEYDOWN:
+ case LK_STAT_MODE_ACK:
+ break;
+ case LK_KEY_LOCK:
+ shift_state ^= LK_LOCK;
+ handle_scancode(c, (shift_state & LK_LOCK) ? 1 : 0);
+ break;
+ case LK_KEY_SHIFT:
+ shift_state ^= LK_SHIFT;
+ handle_scancode(c, (shift_state & LK_SHIFT) ? 1 : 0);
+ break;
+ case LK_KEY_CTRL:
+ shift_state ^= LK_CTRL;
+ handle_scancode(c, (shift_state & LK_CTRL) ? 1 : 0);
+ break;
+ case LK_KEY_COMP:
+ shift_state ^= LK_COMP;
+ handle_scancode(c, (shift_state & LK_COMP) ? 1 : 0);
+ break;
+ case LK_KEY_RELEASE:
+ if (shift_state & LK_SHIFT)
+ handle_scancode(scancodeRemap[LK_KEY_SHIFT], 0);
+ if (shift_state & LK_CTRL)
+ handle_scancode(scancodeRemap[LK_KEY_CTRL], 0);
+ if (shift_state & LK_COMP)
+ handle_scancode(scancodeRemap[LK_KEY_COMP], 0);
+ if (shift_state & LK_LOCK)
+ handle_scancode(scancodeRemap[LK_KEY_LOCK], 0);
+ shift_state = 0;
+ break;
+ case LK_KEY_REPEAT:
+ handle_scancode(prev_scancode, 1);
+ break;
+ default:
+ prev_scancode = c;
+ handle_scancode(c, 1);
+ break;
+ }
+ tasklet_schedule(&keyboard_tasklet);
+}
+
+static void __init lk201_info(void *handle)
+{
+}
+
+static int __init lk201_init(void *handle)
+{
+ /* First install handlers. */
+ lk201_handle = handle;
+ kbd_rate = lk201_kbd_rate;
+ kd_mksound = lk201_kd_mksound;
+
+ lk201_hook.rx_char = lk201_rx_char;
+
+ /* Then just issue a reset -- the handlers will do the rest. */
+ lk201_send(LK_CMD_POWER_UP);
+
+ return 0;
+}
+
+void __init kbd_init_hw(void)
+{
+ /* Maxine uses LK501 at the Access.Bus. */
+ if (!LK_IFACE)
+ return;
+
+ printk(KERN_INFO "lk201: DECstation LK keyboard driver v0.05.\n");
+
+ if (LK_IFACE_ZS) {
+ /*
+ * kbd_init_hw() is being called before
+ * rs_init() so just register the kbd hook
+ * and let zs_init do the rest :-)
+ */
+ if (!register_dec_serial_hook(KEYB_LINE, &lk201_hook))
+ unregister_dec_serial_hook(KEYB_LINE);
+ } else {
+ /*
+ * TODO: modify dz.c to allow similar hooks
+ * for LK201 handling on DS2100, DS3100, and DS5000/200
+ */
+ printk(KERN_ERR "lk201: support for DZ11 not yet ready.\n");
+ }
+}
diff --git a/drivers/tc/lk201.h b/drivers/tc/lk201.h
new file mode 100644
index 0000000..99f3203
--- /dev/null
+++ b/drivers/tc/lk201.h
@@ -0,0 +1,125 @@
+/*
+ * Commands to the keyboard processor
+ */
+
+#define LK_PARAM 0x80 /* start/end parameter list */
+
+#define LK_CMD_RESUME 0x8b /* resume transmission to the host */
+#define LK_CMD_INHIBIT 0x89 /* stop transmission to the host */
+#define LK_CMD_LEDS_ON 0x13 /* light LEDs */
+ /* 1st param: led bitmask */
+#define LK_CMD_LEDS_OFF 0x11 /* turn off LEDs */
+ /* 1st param: led bitmask */
+#define LK_CMD_DIS_KEYCLK 0x99 /* disable the keyclick */
+#define LK_CMD_ENB_KEYCLK 0x1b /* enable the keyclick */
+ /* 1st param: volume */
+#define LK_CMD_DIS_CTLCLK 0xb9 /* disable the Ctrl keyclick */
+#define LK_CMD_ENB_CTLCLK 0xbb /* enable the Ctrl keyclick */
+#define LK_CMD_SOUND_CLK 0x9f /* emit a keyclick */
+#define LK_CMD_DIS_BELL 0xa1 /* disable the bell */
+#define LK_CMD_ENB_BELL 0x23 /* enable the bell */
+ /* 1st param: volume */
+#define LK_CMD_BELL 0xa7 /* emit a bell */
+#define LK_CMD_TMP_NORPT 0xd1 /* disable typematic */
+ /* for the currently pressed key */
+#define LK_CMD_ENB_RPT 0xe3 /* enable typematic */
+ /* for RPT_DOWN groups */
+#define LK_CMD_DIS_RPT 0xe1 /* disable typematic */
+ /* for RPT_DOWN groups */
+#define LK_CMD_RPT_TO_DOWN 0xd9 /* set RPT_DOWN groups to DOWN */
+#define LK_CMD_REQ_ID 0xab /* request the keyboard ID */
+#define LK_CMD_POWER_UP 0xfd /* init power-up sequence */
+#define LK_CMD_TEST_MODE 0xcb /* enter the factory test mode */
+#define LK_CMD_TEST_EXIT 0x80 /* exit the factory test mode */
+#define LK_CMD_SET_DEFAULTS 0xd3 /* set power-up defaults */
+
+#define LK_CMD_MODE(m,div) (LK_PARAM|(((div)&0xf)<<3)|(((m)&0x3)<<1))
+ /* select the repeat mode */
+ /* for the selected key group */
+#define LK_CMD_MODE_AR(m,div) ((((div)&0xf)<<3)|(((m)&0x3)<<1))
+ /* select the repeat mode */
+ /* and the repeat register */
+ /* for the selected key group */
+ /* 1st param: register number */
+#define LK_CMD_RPT_RATE(r) (0x78|(((r)&0x3)<<1))
+ /* set the delay and repeat rate */
+ /* for the selected repeat register */
+ /* 1st param: initial delay */
+ /* 2nd param: repeat rate */
+
+/* there are 4 leds, represent them in the low 4 bits of a byte */
+#define LK_PARAM_LED_MASK(ledbmap) (LK_PARAM|((ledbmap)&0xf))
+#define LK_LED_WAIT 0x1 /* Wait LED */
+#define LK_LED_COMP 0x2 /* Compose LED */
+#define LK_LED_LOCK 0x4 /* Lock LED */
+#define LK_LED_HOLD 0x8 /* Hold Screen LED */
+
+/* max volume is 0, lowest is 0x7 */
+#define LK_PARAM_VOLUME(v) (LK_PARAM|((v)&0x7))
+
+/* mode set command details, div is a key group number */
+#define LK_MODE_DOWN 0x0 /* make only */
+#define LK_MODE_RPT_DOWN 0x1 /* make and typematic */
+#define LK_MODE_DOWN_UP 0x3 /* make and release */
+
+/* there are 4 repeat registers */
+#define LK_PARAM_AR(r) (LK_PARAM|((v)&0x3))
+
+/*
+ * Mappings between key groups and keycodes are as follows:
+ *
+ * 1: 0xbf - 0xff -- alphanumeric,
+ * 2: 0x91 - 0xa5 -- numeric keypad,
+ * 3: 0xbc -- Backspace,
+ * 4: 0xbd - 0xbe -- Tab, Return,
+ * 5: 0xb0 - 0xb2 -- Lock, Compose Character,
+ * 6: 0xad - 0xaf -- Ctrl, Shift,
+ * 7: 0xa6 - 0xa8 -- Left Arrow, Right Arrow,
+ * 8: 0xa9 - 0xac -- Up Arrow, Down Arrow, Right Shift,
+ * 9: 0x88 - 0x90 -- editor keypad,
+ * 10: 0x56 - 0x62 -- F1 - F5,
+ * 11: 0x63 - 0x6e -- F6 - F10,
+ * 12: 0x6f - 0x7a -- F11 - F14,
+ * 13: 0x7b - 0x7d -- Help, Do,
+ * 14: 0x7e - 0x87 -- F17 - F20.
+ *
+ * Notes:
+ * 1. Codes in the 0x00 - 0x40 range are reserved.
+ * 2. The assignment of the 0x41 - 0x55 range is undiscovered, probably 10.
+ */
+
+/* delay is 5 - 630 ms; 0x00 and 0x7f are reserved */
+#define LK_PARAM_DELAY(t) ((t)&0x7f)
+
+/* rate is 12 - 127 Hz; 0x00 - 0x0b and 0x7d (power-up!) are reserved */
+#define LK_PARAM_RATE(r) (LK_PARAM|((r)&0x7f))
+
+#define LK_SHIFT 1<<0
+#define LK_CTRL 1<<1
+#define LK_LOCK 1<<2
+#define LK_COMP 1<<3
+
+#define LK_KEY_SHIFT 0xae
+#define LK_KEY_CTRL 0xaf
+#define LK_KEY_LOCK 0xb0
+#define LK_KEY_COMP 0xb1
+
+#define LK_KEY_RELEASE 0xb3 /* all keys released */
+#define LK_KEY_REPEAT 0xb4 /* repeat the last key */
+
+/* status responses */
+#define LK_STAT_RESUME_ERR 0xb5 /* keystrokes lost while inhibited */
+#define LK_STAT_ERROR 0xb6 /* an invalid command received */
+#define LK_STAT_INHIBIT_ACK 0xb7 /* transmission inhibited */
+#define LK_STAT_TEST_ACK 0xb8 /* the factory test mode entered */
+#define LK_STAT_MODE_KEYDOWN 0xb9 /* a key is down on a change */
+ /* to the DOWN_UP mode; */
+ /* the keycode follows */
+#define LK_STAT_MODE_ACK 0xba /* the mode command succeeded */
+
+#define LK_STAT_PWRUP_ID 0x01 /* the power-up response start mark */
+#define LK_STAT_PWRUP_OK 0x00 /* the power-up self test OK */
+#define LK_STAT_PWRUP_KDOWN 0x3d /* a key was down during the test */
+#define LK_STAT_PWRUP_ERROR 0x3e /* keyboard self test failure */
+
+extern unsigned char scancodeRemap[256];
diff --git a/drivers/tc/tc.c b/drivers/tc/tc.c
new file mode 100644
index 0000000..a89ef4d
--- /dev/null
+++ b/drivers/tc/tc.c
@@ -0,0 +1,260 @@
+/*
+ * tc-init: We assume the TURBOchannel to be up and running so
+ * just probe for Modules and fill in the global data structure
+ * tc_bus.
+ *
+ * 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) Harald Koerfgen, 1998
+ * Copyright (c) 2001, 2003 Maciej W. Rozycki
+ */
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <asm/addrspace.h>
+#include <asm/errno.h>
+#include <asm/dec/machtype.h>
+#include <asm/dec/prom.h>
+#include <asm/dec/tcinfo.h>
+#include <asm/dec/tcmodule.h>
+#include <asm/dec/interrupts.h>
+#include <asm/paccess.h>
+#include <asm/ptrace.h>
+
+#define TC_DEBUG
+
+MODULE_LICENSE("GPL");
+slot_info tc_bus[MAX_SLOT];
+static int num_tcslots;
+static tcinfo *info;
+
+unsigned long system_base;
+
+/*
+ * Interface to the world. Read comment in include/asm-mips/tc.h.
+ */
+
+int search_tc_card(const char *name)
+{
+ int slot;
+ slot_info *sip;
+
+ for (slot = 0; slot < num_tcslots; slot++) {
+ sip = &tc_bus[slot];
+ if ((sip->flags & FREE) &&
+ (strncmp(sip->name, name, strlen(name)) == 0)) {
+ return slot;
+ }
+ }
+
+ return -ENODEV;
+}
+
+void claim_tc_card(int slot)
+{
+ if (tc_bus[slot].flags & IN_USE) {
+ printk("claim_tc_card: attempting to claim a card already in use\n");
+ return;
+ }
+ tc_bus[slot].flags &= ~FREE;
+ tc_bus[slot].flags |= IN_USE;
+}
+
+void release_tc_card(int slot)
+{
+ if (tc_bus[slot].flags & FREE) {
+ printk("release_tc_card: "
+ "attempting to release a card already free\n");
+ return;
+ }
+ tc_bus[slot].flags &= ~IN_USE;
+ tc_bus[slot].flags |= FREE;
+}
+
+unsigned long get_tc_base_addr(int slot)
+{
+ return tc_bus[slot].base_addr;
+}
+
+unsigned long get_tc_irq_nr(int slot)
+{
+ return tc_bus[slot].interrupt;
+}
+
+unsigned long get_tc_speed(void)
+{
+ return 100000 * (10000 / (unsigned long)info->clk_period);
+}
+
+/*
+ * Probing for TURBOchannel modules
+ */
+static void __init tc_probe(unsigned long startaddr, unsigned long size,
+ int slots)
+{
+ int i, slot, err;
+ long offset;
+ unsigned char pattern[4];
+ unsigned char *module;
+
+ for (slot = 0; slot < slots; slot++) {
+ module = (char *)(startaddr + slot * size);
+
+ offset = OLDCARD;
+
+ err = 0;
+ err |= get_dbe(pattern[0], module + OLDCARD + TC_PATTERN0);
+ err |= get_dbe(pattern[1], module + OLDCARD + TC_PATTERN1);
+ err |= get_dbe(pattern[2], module + OLDCARD + TC_PATTERN2);
+ err |= get_dbe(pattern[3], module + OLDCARD + TC_PATTERN3);
+ if (err)
+ continue;
+
+ if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
+ pattern[2] != 0xaa || pattern[3] != 0xff) {
+ offset = NEWCARD;
+
+ err = 0;
+ err |= get_dbe(pattern[0], module + TC_PATTERN0);
+ err |= get_dbe(pattern[1], module + TC_PATTERN1);
+ err |= get_dbe(pattern[2], module + TC_PATTERN2);
+ err |= get_dbe(pattern[3], module + TC_PATTERN3);
+ if (err)
+ continue;
+ }
+
+ if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
+ pattern[2] != 0xaa || pattern[3] != 0xff)
+ continue;
+
+ tc_bus[slot].base_addr = (unsigned long)module;
+ for(i = 0; i < 8; i++) {
+ tc_bus[slot].firmware[i] =
+ module[TC_FIRM_VER + offset + 4 * i];
+ tc_bus[slot].vendor[i] =
+ module[TC_VENDOR + offset + 4 * i];
+ tc_bus[slot].name[i] =
+ module[TC_MODULE + offset + 4 * i];
+ }
+ tc_bus[slot].firmware[8] = 0;
+ tc_bus[slot].vendor[8] = 0;
+ tc_bus[slot].name[8] = 0;
+ /*
+ * Looks unneccesary, but we may change
+ * TC? in the future
+ */
+ switch (slot) {
+ case 0:
+ tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC0];
+ break;
+ case 1:
+ tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC1];
+ break;
+ case 2:
+ tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC2];
+ break;
+ /*
+ * Yuck! DS5000/200 onboard devices
+ */
+ case 5:
+ tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC5];
+ break;
+ case 6:
+ tc_bus[slot].interrupt = dec_interrupt[DEC_IRQ_TC6];
+ break;
+ default:
+ tc_bus[slot].interrupt = -1;
+ break;
+ }
+ }
+}
+
+/*
+ * the main entry
+ */
+void __init tc_init(void)
+{
+ int tc_clock;
+ int i;
+ unsigned long slot0addr;
+ unsigned long slot_size;
+
+ if (!TURBOCHANNEL)
+ return;
+
+ for (i = 0; i < MAX_SLOT; i++) {
+ tc_bus[i].base_addr = 0;
+ tc_bus[i].name[0] = 0;
+ tc_bus[i].vendor[0] = 0;
+ tc_bus[i].firmware[0] = 0;
+ tc_bus[i].interrupt = -1;
+ tc_bus[i].flags = FREE;
+ }
+
+ info = (tcinfo *) rex_gettcinfo();
+ slot0addr = (unsigned long)KSEG1ADDR(rex_slot_address(0));
+
+ switch (mips_machtype) {
+ case MACH_DS5000_200:
+ num_tcslots = 7;
+ break;
+ case MACH_DS5000_1XX:
+ case MACH_DS5000_2X0:
+ case MACH_DS5900:
+ num_tcslots = 3;
+ break;
+ case MACH_DS5000_XX:
+ default:
+ num_tcslots = 2;
+ break;
+ }
+
+ tc_clock = 10000 / info->clk_period;
+
+ if (TURBOCHANNEL && info->slot_size && slot0addr) {
+ printk("TURBOchannel rev. %1d at %2d.%1d MHz ", info->revision,
+ tc_clock / 10, tc_clock % 10);
+ printk("(with%s parity)\n", info->parity ? "" : "out");
+
+ slot_size = info->slot_size << 20;
+
+ tc_probe(slot0addr, slot_size, num_tcslots);
+
+ /*
+ * All TURBOchannel DECstations have the onboard devices
+ * where the (num_tcslots + 0 or 1 on DS5k/xx) Option Module
+ * would be.
+ */
+ if(mips_machtype == MACH_DS5000_XX)
+ i = 1;
+ else
+ i = 0;
+
+ system_base = slot0addr + slot_size * (num_tcslots + i);
+
+#ifdef TC_DEBUG
+ for (i = 0; i < num_tcslots; i++)
+ if (tc_bus[i].base_addr) {
+ printk(" slot %d: ", i);
+ printk("%s %s %s\n", tc_bus[i].vendor,
+ tc_bus[i].name, tc_bus[i].firmware);
+ }
+#endif
+ ioport_resource.end = KSEG2 - 1;
+ }
+}
+
+subsys_initcall(tc_init);
+
+EXPORT_SYMBOL(search_tc_card);
+EXPORT_SYMBOL(claim_tc_card);
+EXPORT_SYMBOL(release_tc_card);
+EXPORT_SYMBOL(get_tc_base_addr);
+EXPORT_SYMBOL(get_tc_irq_nr);
+EXPORT_SYMBOL(get_tc_speed);
+EXPORT_SYMBOL(system_base);
diff --git a/drivers/tc/zs.c b/drivers/tc/zs.c
new file mode 100644
index 0000000..4382ee6
--- /dev/null
+++ b/drivers/tc/zs.c
@@ -0,0 +1,2253 @@
+/*
+ * decserial.c: Serial port driver for IOASIC DECstations.
+ *
+ * Derived from drivers/sbus/char/sunserial.c by Paul Mackerras.
+ * Derived from drivers/macintosh/macserial.c by Harald Koerfgen.
+ *
+ * DECstation changes
+ * Copyright (C) 1998-2000 Harald Koerfgen
+ * Copyright (C) 2000, 2001, 2002, 2003, 2004 Maciej W. Rozycki
+ *
+ * For the rest of the code the original Copyright applies:
+ * Copyright (C) 1996 Paul Mackerras (Paul.Mackerras@cs.anu.edu.au)
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ *
+ *
+ * Note: for IOASIC systems the wiring is as follows:
+ *
+ * mouse/keyboard:
+ * DIN-7 MJ-4 signal SCC
+ * 2 1 TxD <- A.TxD
+ * 3 4 RxD -> A.RxD
+ *
+ * EIA-232/EIA-423:
+ * DB-25 MMJ-6 signal SCC
+ * 2 2 TxD <- B.TxD
+ * 3 5 RxD -> B.RxD
+ * 4 RTS <- ~A.RTS
+ * 5 CTS -> ~B.CTS
+ * 6 6 DSR -> ~A.SYNC
+ * 8 CD -> ~B.DCD
+ * 12 DSRS(DCE) -> ~A.CTS (*)
+ * 15 TxC -> B.TxC
+ * 17 RxC -> B.RxC
+ * 20 1 DTR <- ~A.DTR
+ * 22 RI -> ~A.DCD
+ * 23 DSRS(DTE) <- ~B.RTS
+ *
+ * (*) EIA-232 defines the signal at this pin to be SCD, while DSRS(DCE)
+ * is shared with DSRS(DTE) at pin 23.
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#ifdef CONFIG_SERIAL_DEC_CONSOLE
+#include <linux/console.h>
+#endif
+
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/bootinfo.h>
+#include <asm/dec/serial.h>
+
+#ifdef CONFIG_MACH_DECSTATION
+#include <asm/dec/interrupts.h>
+#include <asm/dec/machtype.h>
+#include <asm/dec/tc.h>
+#include <asm/dec/ioasic_addrs.h>
+#endif
+#ifdef CONFIG_KGDB
+#include <asm/kgdb.h>
+#endif
+#ifdef CONFIG_MAGIC_SYSRQ
+#include <linux/sysrq.h>
+#endif
+
+#include "zs.h"
+
+/*
+ * It would be nice to dynamically allocate everything that
+ * depends on NUM_SERIAL, so we could support any number of
+ * Z8530s, but for now...
+ */
+#define NUM_SERIAL 2 /* Max number of ZS chips supported */
+#define NUM_CHANNELS (NUM_SERIAL * 2) /* 2 channels per chip */
+#define CHANNEL_A_NR (zs_parms->channel_a_offset > zs_parms->channel_b_offset)
+ /* Number of channel A in the chip */
+#define ZS_CHAN_IO_SIZE 8
+#define ZS_CLOCK 7372800 /* Z8530 RTxC input clock rate */
+
+#define RECOVERY_DELAY udelay(2)
+
+struct zs_parms {
+ unsigned long scc0;
+ unsigned long scc1;
+ int channel_a_offset;
+ int channel_b_offset;
+ int irq0;
+ int irq1;
+ int clock;
+};
+
+static struct zs_parms *zs_parms;
+
+#ifdef CONFIG_MACH_DECSTATION
+static struct zs_parms ds_parms = {
+ scc0 : IOASIC_SCC0,
+ scc1 : IOASIC_SCC1,
+ channel_a_offset : 1,
+ channel_b_offset : 9,
+ irq0 : -1,
+ irq1 : -1,
+ clock : ZS_CLOCK
+};
+#endif
+
+#ifdef CONFIG_MACH_DECSTATION
+#define DS_BUS_PRESENT (IOASIC)
+#else
+#define DS_BUS_PRESENT 0
+#endif
+
+#define BUS_PRESENT (DS_BUS_PRESENT)
+
+struct dec_zschannel zs_channels[NUM_CHANNELS];
+struct dec_serial zs_soft[NUM_CHANNELS];
+int zs_channels_found;
+struct dec_serial *zs_chain; /* list of all channels */
+
+struct tty_struct zs_ttys[NUM_CHANNELS];
+
+#ifdef CONFIG_SERIAL_DEC_CONSOLE
+static struct console sercons;
+#endif
+#if defined(CONFIG_SERIAL_DEC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) && \
+ !defined(MODULE)
+static unsigned long break_pressed; /* break, really ... */
+#endif
+
+static unsigned char zs_init_regs[16] __initdata = {
+ 0, /* write 0 */
+ 0, /* write 1 */
+ 0, /* write 2 */
+ 0, /* write 3 */
+ (X16CLK), /* write 4 */
+ 0, /* write 5 */
+ 0, 0, 0, /* write 6, 7, 8 */
+ (MIE | DLC | NV), /* write 9 */
+ (NRZ), /* write 10 */
+ (TCBR | RCBR), /* write 11 */
+ 0, 0, /* BRG time constant, write 12 + 13 */
+ (BRSRC | BRENABL), /* write 14 */
+ 0 /* write 15 */
+};
+
+DECLARE_TASK_QUEUE(tq_zs_serial);
+
+static struct tty_driver *serial_driver;
+
+/* serial subtype definitions */
+#define SERIAL_TYPE_NORMAL 1
+
+/* number of characters left in xmit buffer before we ask for more */
+#define WAKEUP_CHARS 256
+
+/*
+ * Debugging.
+ */
+#undef SERIAL_DEBUG_OPEN
+#undef SERIAL_DEBUG_FLOW
+#undef SERIAL_DEBUG_THROTTLE
+#undef SERIAL_PARANOIA_CHECK
+
+#undef ZS_DEBUG_REGS
+
+#ifdef SERIAL_DEBUG_THROTTLE
+#define _tty_name(tty,buf) tty_name(tty,buf)
+#endif
+
+#define RS_STROBE_TIME 10
+#define RS_ISR_PASS_LIMIT 256
+
+#define _INLINE_ inline
+
+static void probe_sccs(void);
+static void change_speed(struct dec_serial *info);
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout);
+
+/*
+ * tmp_buf is used as a temporary buffer by serial_write. We need to
+ * lock it in case the copy_from_user blocks while swapping in a page,
+ * and some other program tries to do a serial write at the same time.
+ * Since the lock will only come under contention when the system is
+ * swapping and available memory is low, it makes sense to share one
+ * buffer across all the serial ports, since it significantly saves
+ * memory if large numbers of serial ports are open.
+ */
+static unsigned char tmp_buf[4096]; /* This is cheating */
+static DECLARE_MUTEX(tmp_buf_sem);
+
+static inline int serial_paranoia_check(struct dec_serial *info,
+ char *name, const char *routine)
+{
+#ifdef SERIAL_PARANOIA_CHECK
+ static const char *badmagic =
+ "Warning: bad magic number for serial struct %s in %s\n";
+ static const char *badinfo =
+ "Warning: null mac_serial for %s in %s\n";
+
+ if (!info) {
+ printk(badinfo, name, routine);
+ return 1;
+ }
+ if (info->magic != SERIAL_MAGIC) {
+ printk(badmagic, name, routine);
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+/*
+ * This is used to figure out the divisor speeds and the timeouts
+ */
+static int baud_table[] = {
+ 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+ 9600, 19200, 38400, 57600, 115200, 0 };
+
+/*
+ * Reading and writing Z8530 registers.
+ */
+static inline unsigned char read_zsreg(struct dec_zschannel *channel,
+ unsigned char reg)
+{
+ unsigned char retval;
+
+ if (reg != 0) {
+ *channel->control = reg & 0xf;
+ fast_iob(); RECOVERY_DELAY;
+ }
+ retval = *channel->control;
+ RECOVERY_DELAY;
+ return retval;
+}
+
+static inline void write_zsreg(struct dec_zschannel *channel,
+ unsigned char reg, unsigned char value)
+{
+ if (reg != 0) {
+ *channel->control = reg & 0xf;
+ fast_iob(); RECOVERY_DELAY;
+ }
+ *channel->control = value;
+ fast_iob(); RECOVERY_DELAY;
+ return;
+}
+
+static inline unsigned char read_zsdata(struct dec_zschannel *channel)
+{
+ unsigned char retval;
+
+ retval = *channel->data;
+ RECOVERY_DELAY;
+ return retval;
+}
+
+static inline void write_zsdata(struct dec_zschannel *channel,
+ unsigned char value)
+{
+ *channel->data = value;
+ fast_iob(); RECOVERY_DELAY;
+ return;
+}
+
+static inline void load_zsregs(struct dec_zschannel *channel,
+ unsigned char *regs)
+{
+/* ZS_CLEARERR(channel);
+ ZS_CLEARFIFO(channel); */
+ /* Load 'em up */
+ write_zsreg(channel, R3, regs[R3] & ~RxENABLE);
+ write_zsreg(channel, R5, regs[R5] & ~TxENAB);
+ write_zsreg(channel, R4, regs[R4]);
+ write_zsreg(channel, R9, regs[R9]);
+ write_zsreg(channel, R1, regs[R1]);
+ write_zsreg(channel, R2, regs[R2]);
+ write_zsreg(channel, R10, regs[R10]);
+ write_zsreg(channel, R11, regs[R11]);
+ write_zsreg(channel, R12, regs[R12]);
+ write_zsreg(channel, R13, regs[R13]);
+ write_zsreg(channel, R14, regs[R14]);
+ write_zsreg(channel, R15, regs[R15]);
+ write_zsreg(channel, R3, regs[R3]);
+ write_zsreg(channel, R5, regs[R5]);
+ return;
+}
+
+/* Sets or clears DTR/RTS on the requested line */
+static inline void zs_rtsdtr(struct dec_serial *info, int which, int set)
+{
+ unsigned long flags;
+
+
+ save_flags(flags); cli();
+ if (info->zs_channel != info->zs_chan_a) {
+ if (set) {
+ info->zs_chan_a->curregs[5] |= (which & (RTS | DTR));
+ } else {
+ info->zs_chan_a->curregs[5] &= ~(which & (RTS | DTR));
+ }
+ write_zsreg(info->zs_chan_a, 5, info->zs_chan_a->curregs[5]);
+ }
+ restore_flags(flags);
+}
+
+/* Utility routines for the Zilog */
+static inline int get_zsbaud(struct dec_serial *ss)
+{
+ struct dec_zschannel *channel = ss->zs_channel;
+ int brg;
+
+ /* The baud rate is split up between two 8-bit registers in
+ * what is termed 'BRG time constant' format in my docs for
+ * the chip, it is a function of the clk rate the chip is
+ * receiving which happens to be constant.
+ */
+ brg = (read_zsreg(channel, 13) << 8);
+ brg |= read_zsreg(channel, 12);
+ return BRG_TO_BPS(brg, (zs_parms->clock/(ss->clk_divisor)));
+}
+
+/* On receive, this clears errors and the receiver interrupts */
+static inline void rs_recv_clear(struct dec_zschannel *zsc)
+{
+ write_zsreg(zsc, 0, ERR_RES);
+ write_zsreg(zsc, 0, RES_H_IUS); /* XXX this is unnecessary */
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * Here starts the interrupt handling routines. All of the following
+ * subroutines are declared as inline and are folded into
+ * rs_interrupt(). They were separated out for readability's sake.
+ *
+ * - Ted Ts'o (tytso@mit.edu), 7-Mar-93
+ * -----------------------------------------------------------------------
+ */
+
+/*
+ * This routine is used by the interrupt handler to schedule
+ * processing in the software interrupt portion of the driver.
+ */
+static _INLINE_ void rs_sched_event(struct dec_serial *info,
+ int event)
+{
+ info->event |= 1 << event;
+ queue_task(&info->tqueue, &tq_zs_serial);
+ mark_bh(SERIAL_BH);
+}
+
+static _INLINE_ void receive_chars(struct dec_serial *info,
+ struct pt_regs *regs)
+{
+ struct tty_struct *tty = info->tty;
+ unsigned char ch, stat, flag;
+
+ while ((read_zsreg(info->zs_channel, R0) & Rx_CH_AV) != 0) {
+
+ stat = read_zsreg(info->zs_channel, R1);
+ ch = read_zsdata(info->zs_channel);
+
+ if (!tty && (!info->hook || !info->hook->rx_char))
+ continue;
+
+ flag = TTY_NORMAL;
+ if (info->tty_break) {
+ info->tty_break = 0;
+ flag = TTY_BREAK;
+ if (info->flags & ZILOG_SAK)
+ do_SAK(tty);
+ /* Ignore the null char got when BREAK is removed. */
+ if (ch == 0)
+ continue;
+ } else {
+ if (stat & Rx_OVR) {
+ flag = TTY_OVERRUN;
+ } else if (stat & FRM_ERR) {
+ flag = TTY_FRAME;
+ } else if (stat & PAR_ERR) {
+ flag = TTY_PARITY;
+ }
+ if (flag != TTY_NORMAL)
+ /* reset the error indication */
+ write_zsreg(info->zs_channel, R0, ERR_RES);
+ }
+
+#if defined(CONFIG_SERIAL_DEC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) && \
+ !defined(MODULE)
+ if (break_pressed && info->line == sercons.index) {
+ /* Ignore the null char got when BREAK is removed. */
+ if (ch == 0)
+ continue;
+ if (time_before(jiffies, break_pressed + HZ * 5)) {
+ handle_sysrq(ch, regs, NULL);
+ break_pressed = 0;
+ continue;
+ }
+ break_pressed = 0;
+ }
+#endif
+
+ if (info->hook && info->hook->rx_char) {
+ (*info->hook->rx_char)(ch, flag);
+ return;
+ }
+
+ tty_insert_flip_char(tty, ch, flag);
+ }
+ if (tty)
+ tty_flip_buffer_push(tty);
+}
+
+static void transmit_chars(struct dec_serial *info)
+{
+ if ((read_zsreg(info->zs_channel, R0) & Tx_BUF_EMP) == 0)
+ return;
+ info->tx_active = 0;
+
+ if (info->x_char) {
+ /* Send next char */
+ write_zsdata(info->zs_channel, info->x_char);
+ info->x_char = 0;
+ info->tx_active = 1;
+ return;
+ }
+
+ if ((info->xmit_cnt <= 0) || (info->tty && info->tty->stopped)
+ || info->tx_stopped) {
+ write_zsreg(info->zs_channel, R0, RES_Tx_P);
+ return;
+ }
+ /* Send char */
+ write_zsdata(info->zs_channel, info->xmit_buf[info->xmit_tail++]);
+ info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+ info->xmit_cnt--;
+ info->tx_active = 1;
+
+ if (info->xmit_cnt < WAKEUP_CHARS)
+ rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
+}
+
+static _INLINE_ void status_handle(struct dec_serial *info)
+{
+ unsigned char stat;
+
+ /* Get status from Read Register 0 */
+ stat = read_zsreg(info->zs_channel, R0);
+
+ if ((stat & BRK_ABRT) && !(info->read_reg_zero & BRK_ABRT)) {
+#if defined(CONFIG_SERIAL_DEC_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) && \
+ !defined(MODULE)
+ if (info->line == sercons.index) {
+ if (!break_pressed)
+ break_pressed = jiffies;
+ } else
+#endif
+ info->tty_break = 1;
+ }
+
+ if (info->zs_channel != info->zs_chan_a) {
+
+ /* Check for DCD transitions */
+ if (info->tty && !C_CLOCAL(info->tty) &&
+ ((stat ^ info->read_reg_zero) & DCD) != 0 ) {
+ if (stat & DCD) {
+ wake_up_interruptible(&info->open_wait);
+ } else {
+ tty_hangup(info->tty);
+ }
+ }
+
+ /* Check for CTS transitions */
+ if (info->tty && C_CRTSCTS(info->tty)) {
+ if ((stat & CTS) != 0) {
+ if (info->tx_stopped) {
+ info->tx_stopped = 0;
+ if (!info->tx_active)
+ transmit_chars(info);
+ }
+ } else {
+ info->tx_stopped = 1;
+ }
+ }
+
+ }
+
+ /* Clear status condition... */
+ write_zsreg(info->zs_channel, R0, RES_EXT_INT);
+ info->read_reg_zero = stat;
+}
+
+/*
+ * This is the serial driver's generic interrupt routine
+ */
+void rs_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct dec_serial *info = (struct dec_serial *) dev_id;
+ unsigned char zs_intreg;
+ int shift;
+
+ /* NOTE: The read register 3, which holds the irq status,
+ * does so for both channels on each chip. Although
+ * the status value itself must be read from the A
+ * channel and is only valid when read from channel A.
+ * Yes... broken hardware...
+ */
+#define CHAN_IRQMASK (CHBRxIP | CHBTxIP | CHBEXT)
+
+ if (info->zs_chan_a == info->zs_channel)
+ shift = 3; /* Channel A */
+ else
+ shift = 0; /* Channel B */
+
+ for (;;) {
+ zs_intreg = read_zsreg(info->zs_chan_a, R3) >> shift;
+ if ((zs_intreg & CHAN_IRQMASK) == 0)
+ break;
+
+ if (zs_intreg & CHBRxIP) {
+ receive_chars(info, regs);
+ }
+ if (zs_intreg & CHBTxIP) {
+ transmit_chars(info);
+ }
+ if (zs_intreg & CHBEXT) {
+ status_handle(info);
+ }
+ }
+
+ /* Why do we need this ? */
+ write_zsreg(info->zs_channel, 0, RES_H_IUS);
+}
+
+#ifdef ZS_DEBUG_REGS
+void zs_dump (void) {
+ int i, j;
+ for (i = 0; i < zs_channels_found; i++) {
+ struct dec_zschannel *ch = &zs_channels[i];
+ if ((long)ch->control == UNI_IO_BASE+UNI_SCC1A_CTRL) {
+ for (j = 0; j < 15; j++) {
+ printk("W%d = 0x%x\t",
+ j, (int)ch->curregs[j]);
+ }
+ for (j = 0; j < 15; j++) {
+ printk("R%d = 0x%x\t",
+ j, (int)read_zsreg(ch,j));
+ }
+ printk("\n\n");
+ }
+ }
+}
+#endif
+
+/*
+ * -------------------------------------------------------------------
+ * Here ends the serial interrupt routines.
+ * -------------------------------------------------------------------
+ */
+
+/*
+ * ------------------------------------------------------------
+ * rs_stop() and rs_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * ------------------------------------------------------------
+ */
+static void rs_stop(struct tty_struct *tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_stop"))
+ return;
+
+#if 1
+ save_flags(flags); cli();
+ if (info->zs_channel->curregs[5] & TxENAB) {
+ info->zs_channel->curregs[5] &= ~TxENAB;
+ write_zsreg(info->zs_channel, 5, info->zs_channel->curregs[5]);
+ }
+ restore_flags(flags);
+#endif
+}
+
+static void rs_start(struct tty_struct *tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_start"))
+ return;
+
+ save_flags(flags); cli();
+#if 1
+ if (info->xmit_cnt && info->xmit_buf && !(info->zs_channel->curregs[5] & TxENAB)) {
+ info->zs_channel->curregs[5] |= TxENAB;
+ write_zsreg(info->zs_channel, 5, info->zs_channel->curregs[5]);
+ }
+#else
+ if (info->xmit_cnt && info->xmit_buf && !info->tx_active) {
+ transmit_chars(info);
+ }
+#endif
+ restore_flags(flags);
+}
+
+/*
+ * This routine is used to handle the "bottom half" processing for the
+ * serial driver, known also the "software interrupt" processing.
+ * This processing is done at the kernel interrupt level, after the
+ * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This
+ * is where time-consuming activities which can not be done in the
+ * interrupt driver proper are done; the interrupt driver schedules
+ * them using rs_sched_event(), and they get done here.
+ */
+static void do_serial_bh(void)
+{
+ run_task_queue(&tq_zs_serial);
+}
+
+static void do_softint(void *private_)
+{
+ struct dec_serial *info = (struct dec_serial *) private_;
+ struct tty_struct *tty;
+
+ tty = info->tty;
+ if (!tty)
+ return;
+
+ if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
+ tty_wakeup(tty);
+ }
+}
+
+int zs_startup(struct dec_serial * info)
+{
+ unsigned long flags;
+
+ if (info->flags & ZILOG_INITIALIZED)
+ return 0;
+
+ if (!info->xmit_buf) {
+ info->xmit_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL);
+ if (!info->xmit_buf)
+ return -ENOMEM;
+ }
+
+ save_flags(flags); cli();
+
+#ifdef SERIAL_DEBUG_OPEN
+ printk("starting up ttyS%d (irq %d)...", info->line, info->irq);
+#endif
+
+ /*
+ * Clear the receive FIFO.
+ */
+ ZS_CLEARFIFO(info->zs_channel);
+ info->xmit_fifo_size = 1;
+
+ /*
+ * Clear the interrupt registers.
+ */
+ write_zsreg(info->zs_channel, R0, ERR_RES);
+ write_zsreg(info->zs_channel, R0, RES_H_IUS);
+
+ /*
+ * Set the speed of the serial port
+ */
+ change_speed(info);
+
+ /*
+ * Turn on RTS and DTR.
+ */
+ zs_rtsdtr(info, RTS | DTR, 1);
+
+ /*
+ * Finally, enable sequencing and interrupts
+ */
+ info->zs_channel->curregs[R1] &= ~RxINT_MASK;
+ info->zs_channel->curregs[R1] |= (RxINT_ALL | TxINT_ENAB |
+ EXT_INT_ENAB);
+ info->zs_channel->curregs[R3] |= RxENABLE;
+ info->zs_channel->curregs[R5] |= TxENAB;
+ info->zs_channel->curregs[R15] |= (DCDIE | CTSIE | TxUIE | BRKIE);
+ write_zsreg(info->zs_channel, R1, info->zs_channel->curregs[R1]);
+ write_zsreg(info->zs_channel, R3, info->zs_channel->curregs[R3]);
+ write_zsreg(info->zs_channel, R5, info->zs_channel->curregs[R5]);
+ write_zsreg(info->zs_channel, R15, info->zs_channel->curregs[R15]);
+
+ /*
+ * And clear the interrupt registers again for luck.
+ */
+ write_zsreg(info->zs_channel, R0, ERR_RES);
+ write_zsreg(info->zs_channel, R0, RES_H_IUS);
+
+ /* Save the current value of RR0 */
+ info->read_reg_zero = read_zsreg(info->zs_channel, R0);
+
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+
+ info->flags |= ZILOG_INITIALIZED;
+ restore_flags(flags);
+ return 0;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void shutdown(struct dec_serial * info)
+{
+ unsigned long flags;
+
+ if (!(info->flags & ZILOG_INITIALIZED))
+ return;
+
+#ifdef SERIAL_DEBUG_OPEN
+ printk("Shutting down serial port %d (irq %d)....", info->line,
+ info->irq);
+#endif
+
+ save_flags(flags); cli(); /* Disable interrupts */
+
+ if (info->xmit_buf) {
+ free_page((unsigned long) info->xmit_buf);
+ info->xmit_buf = 0;
+ }
+
+ info->zs_channel->curregs[1] = 0;
+ write_zsreg(info->zs_channel, 1, info->zs_channel->curregs[1]); /* no interrupts */
+
+ info->zs_channel->curregs[3] &= ~RxENABLE;
+ write_zsreg(info->zs_channel, 3, info->zs_channel->curregs[3]);
+
+ info->zs_channel->curregs[5] &= ~TxENAB;
+ write_zsreg(info->zs_channel, 5, info->zs_channel->curregs[5]);
+ if (!info->tty || C_HUPCL(info->tty)) {
+ zs_rtsdtr(info, RTS | DTR, 0);
+ }
+
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags &= ~ZILOG_INITIALIZED;
+ restore_flags(flags);
+}
+
+/*
+ * This routine is called to set the UART divisor registers to match
+ * the specified baud rate for a serial port.
+ */
+static void change_speed(struct dec_serial *info)
+{
+ unsigned cflag;
+ int i;
+ int brg, bits;
+ unsigned long flags;
+
+ if (!info->hook) {
+ if (!info->tty || !info->tty->termios)
+ return;
+ cflag = info->tty->termios->c_cflag;
+ if (!info->port)
+ return;
+ } else {
+ cflag = info->hook->cflags;
+ }
+
+ i = cflag & CBAUD;
+ if (i & CBAUDEX) {
+ i &= ~CBAUDEX;
+ if (i < 1 || i > 2) {
+ if (!info->hook)
+ info->tty->termios->c_cflag &= ~CBAUDEX;
+ else
+ info->hook->cflags &= ~CBAUDEX;
+ } else
+ i += 15;
+ }
+
+ save_flags(flags); cli();
+ info->zs_baud = baud_table[i];
+ if (info->zs_baud) {
+ brg = BPS_TO_BRG(info->zs_baud, zs_parms->clock/info->clk_divisor);
+ info->zs_channel->curregs[12] = (brg & 255);
+ info->zs_channel->curregs[13] = ((brg >> 8) & 255);
+ zs_rtsdtr(info, DTR, 1);
+ } else {
+ zs_rtsdtr(info, RTS | DTR, 0);
+ return;
+ }
+
+ /* byte size and parity */
+ info->zs_channel->curregs[3] &= ~RxNBITS_MASK;
+ info->zs_channel->curregs[5] &= ~TxNBITS_MASK;
+ switch (cflag & CSIZE) {
+ case CS5:
+ bits = 7;
+ info->zs_channel->curregs[3] |= Rx5;
+ info->zs_channel->curregs[5] |= Tx5;
+ break;
+ case CS6:
+ bits = 8;
+ info->zs_channel->curregs[3] |= Rx6;
+ info->zs_channel->curregs[5] |= Tx6;
+ break;
+ case CS7:
+ bits = 9;
+ info->zs_channel->curregs[3] |= Rx7;
+ info->zs_channel->curregs[5] |= Tx7;
+ break;
+ case CS8:
+ default: /* defaults to 8 bits */
+ bits = 10;
+ info->zs_channel->curregs[3] |= Rx8;
+ info->zs_channel->curregs[5] |= Tx8;
+ break;
+ }
+
+ info->timeout = ((info->xmit_fifo_size*HZ*bits) / info->zs_baud);
+ info->timeout += HZ/50; /* Add .02 seconds of slop */
+
+ info->zs_channel->curregs[4] &= ~(SB_MASK | PAR_ENA | PAR_EVEN);
+ if (cflag & CSTOPB) {
+ info->zs_channel->curregs[4] |= SB2;
+ } else {
+ info->zs_channel->curregs[4] |= SB1;
+ }
+ if (cflag & PARENB) {
+ info->zs_channel->curregs[4] |= PAR_ENA;
+ }
+ if (!(cflag & PARODD)) {
+ info->zs_channel->curregs[4] |= PAR_EVEN;
+ }
+
+ if (!(cflag & CLOCAL)) {
+ if (!(info->zs_channel->curregs[15] & DCDIE))
+ info->read_reg_zero = read_zsreg(info->zs_channel, 0);
+ info->zs_channel->curregs[15] |= DCDIE;
+ } else
+ info->zs_channel->curregs[15] &= ~DCDIE;
+ if (cflag & CRTSCTS) {
+ info->zs_channel->curregs[15] |= CTSIE;
+ if ((read_zsreg(info->zs_channel, 0) & CTS) == 0)
+ info->tx_stopped = 1;
+ } else {
+ info->zs_channel->curregs[15] &= ~CTSIE;
+ info->tx_stopped = 0;
+ }
+
+ /* Load up the new values */
+ load_zsregs(info->zs_channel, info->zs_channel->curregs);
+
+ restore_flags(flags);
+}
+
+static void rs_flush_chars(struct tty_struct *tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
+ return;
+
+ if (info->xmit_cnt <= 0 || tty->stopped || info->tx_stopped ||
+ !info->xmit_buf)
+ return;
+
+ /* Enable transmitter */
+ save_flags(flags); cli();
+ transmit_chars(info);
+ restore_flags(flags);
+}
+
+static int rs_write(struct tty_struct * tty,
+ const unsigned char *buf, int count)
+{
+ int c, total = 0;
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_write"))
+ return 0;
+
+ if (!tty || !info->xmit_buf)
+ return 0;
+
+ save_flags(flags);
+ while (1) {
+ cli();
+ c = min(count, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ if (c <= 0)
+ break;
+
+ if (from_user) {
+ down(&tmp_buf_sem);
+ copy_from_user(tmp_buf, buf, c);
+ c = min(c, min(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
+ up(&tmp_buf_sem);
+ } else
+ memcpy(info->xmit_buf + info->xmit_head, buf, c);
+ info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
+ info->xmit_cnt += c;
+ restore_flags(flags);
+ buf += c;
+ count -= c;
+ total += c;
+ }
+
+ if (info->xmit_cnt && !tty->stopped && !info->tx_stopped
+ && !info->tx_active)
+ transmit_chars(info);
+ restore_flags(flags);
+ return total;
+}
+
+static int rs_write_room(struct tty_struct *tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ int ret;
+
+ if (serial_paranoia_check(info, tty->name, "rs_write_room"))
+ return 0;
+ ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
+ if (ret < 0)
+ ret = 0;
+ return ret;
+}
+
+static int rs_chars_in_buffer(struct tty_struct *tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+
+ if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
+ return 0;
+ return info->xmit_cnt;
+}
+
+static void rs_flush_buffer(struct tty_struct *tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+
+ if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
+ return;
+ cli();
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+ sti();
+ tty_wakeup(tty);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_throttle()
+ *
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ * ------------------------------------------------------------
+ */
+static void rs_throttle(struct tty_struct * tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ unsigned long flags;
+
+#ifdef SERIAL_DEBUG_THROTTLE
+ char buf[64];
+
+ printk("throttle %s: %d....\n", _tty_name(tty, buf),
+ tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->name, "rs_throttle"))
+ return;
+
+ if (I_IXOFF(tty)) {
+ save_flags(flags); cli();
+ info->x_char = STOP_CHAR(tty);
+ if (!info->tx_active)
+ transmit_chars(info);
+ restore_flags(flags);
+ }
+
+ if (C_CRTSCTS(tty)) {
+ zs_rtsdtr(info, RTS, 0);
+ }
+}
+
+static void rs_unthrottle(struct tty_struct * tty)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ unsigned long flags;
+
+#ifdef SERIAL_DEBUG_THROTTLE
+ char buf[64];
+
+ printk("unthrottle %s: %d....\n", _tty_name(tty, buf),
+ tty->ldisc.chars_in_buffer(tty));
+#endif
+
+ if (serial_paranoia_check(info, tty->name, "rs_unthrottle"))
+ return;
+
+ if (I_IXOFF(tty)) {
+ save_flags(flags); cli();
+ if (info->x_char)
+ info->x_char = 0;
+ else {
+ info->x_char = START_CHAR(tty);
+ if (!info->tx_active)
+ transmit_chars(info);
+ }
+ restore_flags(flags);
+ }
+
+ if (C_CRTSCTS(tty)) {
+ zs_rtsdtr(info, RTS, 1);
+ }
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_ioctl() and friends
+ * ------------------------------------------------------------
+ */
+
+static int get_serial_info(struct dec_serial * info,
+ struct serial_struct * retinfo)
+{
+ struct serial_struct tmp;
+
+ if (!retinfo)
+ return -EFAULT;
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.type = info->type;
+ tmp.line = info->line;
+ tmp.port = info->port;
+ tmp.irq = info->irq;
+ tmp.flags = info->flags;
+ tmp.baud_base = info->baud_base;
+ tmp.close_delay = info->close_delay;
+ tmp.closing_wait = info->closing_wait;
+ tmp.custom_divisor = info->custom_divisor;
+ return copy_to_user(retinfo,&tmp,sizeof(*retinfo)) ? -EFAULT : 0;
+}
+
+static int set_serial_info(struct dec_serial * info,
+ struct serial_struct * new_info)
+{
+ struct serial_struct new_serial;
+ struct dec_serial old_info;
+ int retval = 0;
+
+ if (!new_info)
+ return -EFAULT;
+ copy_from_user(&new_serial,new_info,sizeof(new_serial));
+ old_info = *info;
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ if ((new_serial.baud_base != info->baud_base) ||
+ (new_serial.type != info->type) ||
+ (new_serial.close_delay != info->close_delay) ||
+ ((new_serial.flags & ~ZILOG_USR_MASK) !=
+ (info->flags & ~ZILOG_USR_MASK)))
+ return -EPERM;
+ info->flags = ((info->flags & ~ZILOG_USR_MASK) |
+ (new_serial.flags & ZILOG_USR_MASK));
+ info->custom_divisor = new_serial.custom_divisor;
+ goto check_and_exit;
+ }
+
+ if (info->count > 1)
+ return -EBUSY;
+
+ /*
+ * OK, past this point, all the error checking has been done.
+ * At this point, we start making changes.....
+ */
+
+ info->baud_base = new_serial.baud_base;
+ info->flags = ((info->flags & ~ZILOG_FLAGS) |
+ (new_serial.flags & ZILOG_FLAGS));
+ info->type = new_serial.type;
+ info->close_delay = new_serial.close_delay;
+ info->closing_wait = new_serial.closing_wait;
+
+check_and_exit:
+ retval = zs_startup(info);
+ return retval;
+}
+
+/*
+ * get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ * is emptied. On bus types like RS485, the transmitter must
+ * release the bus after transmitting. This must be done when
+ * the transmit shift register is empty, not be done when the
+ * transmit holding register is empty. This functionality
+ * allows an RS485 driver to be written in user space.
+ */
+static int get_lsr_info(struct dec_serial * info, unsigned int *value)
+{
+ unsigned char status;
+
+ cli();
+ status = read_zsreg(info->zs_channel, 0);
+ sti();
+ put_user(status,value);
+ return 0;
+}
+
+static int rs_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ struct dec_serial * info = (struct dec_serial *)tty->driver_data;
+ unsigned char control, status_a, status_b;
+ unsigned int result;
+
+ if (info->hook)
+ return -ENODEV;
+
+ if (serial_paranoia_check(info, tty->name, __FUNCTION__))
+ return -ENODEV;
+
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ if (info->zs_channel == info->zs_chan_a)
+ result = 0;
+ else {
+ cli();
+ control = info->zs_chan_a->curregs[5];
+ status_a = read_zsreg(info->zs_chan_a, 0);
+ status_b = read_zsreg(info->zs_channel, 0);
+ sti();
+ result = ((control & RTS) ? TIOCM_RTS: 0)
+ | ((control & DTR) ? TIOCM_DTR: 0)
+ | ((status_b & DCD) ? TIOCM_CAR: 0)
+ | ((status_a & DCD) ? TIOCM_RNG: 0)
+ | ((status_a & SYNC_HUNT) ? TIOCM_DSR: 0)
+ | ((status_b & CTS) ? TIOCM_CTS: 0);
+ }
+ return result;
+}
+
+static int rs_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ struct dec_serial * info = (struct dec_serial *)tty->driver_data;
+ int error;
+ unsigned int arg, bits;
+
+ if (info->hook)
+ return -ENODEV;
+
+ if (serial_paranoia_check(info, tty->name, __FUNCTION__))
+ return -ENODEV;
+
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+
+ if (info->zs_channel == info->zs_chan_a)
+ return 0;
+
+ get_user(arg, value);
+ cli();
+ if (set & TIOCM_RTS)
+ info->zs_chan_a->curregs[5] |= RTS;
+ if (set & TIOCM_DTR)
+ info->zs_chan_a->curregs[5] |= DTR;
+ if (clear & TIOCM_RTS)
+ info->zs_chan_a->curregs[5] &= ~RTS;
+ if (clear & TIOCM_DTR)
+ info->zs_chan_a->curregs[5] &= ~DTR;
+ write_zsreg(info->zs_chan_a, 5, info->zs_chan_a->curregs[5]);
+ sti();
+ return 0;
+}
+
+/*
+ * rs_break - turn transmit break condition on/off
+ */
+static void rs_break(struct tty_struct *tty, int break_state)
+{
+ struct dec_serial *info = (struct dec_serial *) tty->driver_data;
+ unsigned long flags;
+
+ if (serial_paranoia_check(info, tty->name, "rs_break"))
+ return;
+ if (!info->port)
+ return;
+
+ save_flags(flags); cli();
+ if (break_state == -1)
+ info->zs_channel->curregs[5] |= SND_BRK;
+ else
+ info->zs_channel->curregs[5] &= ~SND_BRK;
+ write_zsreg(info->zs_channel, 5, info->zs_channel->curregs[5]);
+ restore_flags(flags);
+}
+
+static int rs_ioctl(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ int error;
+ struct dec_serial * info = (struct dec_serial *)tty->driver_data;
+
+ if (info->hook)
+ return -ENODEV;
+
+ if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
+ return -ENODEV;
+
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+ (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGWILD) &&
+ (cmd != TIOCSERSWILD) && (cmd != TIOCSERGSTRUCT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))
+ return -EIO;
+ }
+
+ switch (cmd) {
+ case TIOCGSERIAL:
+ if (!access_ok(VERIFY_WRITE, (void *)arg,
+ sizeof(struct serial_struct)))
+ return -EFAULT;
+ return get_serial_info(info, (struct serial_struct *)arg);
+
+ case TIOCSSERIAL:
+ return set_serial_info(info, (struct serial_struct *)arg);
+
+ case TIOCSERGETLSR: /* Get line status register */
+ if (!access_ok(VERIFY_WRITE, (void *)arg,
+ sizeof(unsigned int)))
+ return -EFAULT;
+ return get_lsr_info(info, (unsigned int *)arg);
+
+ case TIOCSERGSTRUCT:
+ if (!access_ok(VERIFY_WRITE, (void *)arg,
+ sizeof(struct dec_serial)))
+ return -EFAULT;
+ copy_from_user((struct dec_serial *)arg, info,
+ sizeof(struct dec_serial));
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+ return 0;
+}
+
+static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ struct dec_serial *info = (struct dec_serial *)tty->driver_data;
+ int was_stopped;
+
+ if (tty->termios->c_cflag == old_termios->c_cflag)
+ return;
+ was_stopped = info->tx_stopped;
+
+ change_speed(info);
+
+ if (was_stopped && !info->tx_stopped)
+ rs_start(tty);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_close()
+ *
+ * This routine is called when the serial port gets closed.
+ * Wait for the last remaining data to be sent.
+ * ------------------------------------------------------------
+ */
+static void rs_close(struct tty_struct *tty, struct file * filp)
+{
+ struct dec_serial * info = (struct dec_serial *)tty->driver_data;
+ unsigned long flags;
+
+ if (!info || serial_paranoia_check(info, tty->name, "rs_close"))
+ return;
+
+ save_flags(flags); cli();
+
+ if (tty_hung_up_p(filp)) {
+ restore_flags(flags);
+ return;
+ }
+
+#ifdef SERIAL_DEBUG_OPEN
+ printk("rs_close ttyS%d, count = %d\n", info->line, info->count);
+#endif
+ if ((tty->count == 1) && (info->count != 1)) {
+ /*
+ * Uh, oh. tty->count is 1, which means that the tty
+ * structure will be freed. Info->count should always
+ * be one in these conditions. If it's greater than
+ * one, we've got real problems, since it means the
+ * serial port won't be shutdown.
+ */
+ printk("rs_close: bad serial port count; tty->count is 1, "
+ "info->count is %d\n", info->count);
+ info->count = 1;
+ }
+ if (--info->count < 0) {
+ printk("rs_close: bad serial port count for ttyS%d: %d\n",
+ info->line, info->count);
+ info->count = 0;
+ }
+ if (info->count) {
+ restore_flags(flags);
+ return;
+ }
+ info->flags |= ZILOG_CLOSING;
+ /*
+ * Now we wait for the transmit buffer to clear; and we notify
+ * the line discipline to only process XON/XOFF characters.
+ */
+ tty->closing = 1;
+ if (info->closing_wait != ZILOG_CLOSING_WAIT_NONE)
+ tty_wait_until_sent(tty, info->closing_wait);
+ /*
+ * At this point we stop accepting input. To do this, we
+ * disable the receiver and receive interrupts.
+ */
+ info->zs_channel->curregs[3] &= ~RxENABLE;
+ write_zsreg(info->zs_channel, 3, info->zs_channel->curregs[3]);
+ info->zs_channel->curregs[1] = 0; /* disable any rx ints */
+ write_zsreg(info->zs_channel, 1, info->zs_channel->curregs[1]);
+ ZS_CLEARFIFO(info->zs_channel);
+ if (info->flags & ZILOG_INITIALIZED) {
+ /*
+ * Before we drop DTR, make sure the SCC transmitter
+ * has completely drained.
+ */
+ rs_wait_until_sent(tty, info->timeout);
+ }
+
+ shutdown(info);
+ if (tty->driver->flush_buffer)
+ tty->driver->flush_buffer(tty);
+ tty_ldisc_flush(tty);
+ tty->closing = 0;
+ info->event = 0;
+ info->tty = 0;
+ if (info->blocked_open) {
+ if (info->close_delay) {
+ msleep_interruptible(jiffies_to_msecs(info->close_delay));
+ }
+ wake_up_interruptible(&info->open_wait);
+ }
+ info->flags &= ~(ZILOG_NORMAL_ACTIVE|ZILOG_CLOSING);
+ wake_up_interruptible(&info->close_wait);
+ restore_flags(flags);
+}
+
+/*
+ * rs_wait_until_sent() --- wait until the transmitter is empty
+ */
+static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+ struct dec_serial *info = (struct dec_serial *) tty->driver_data;
+ unsigned long orig_jiffies;
+ int char_time;
+
+ if (serial_paranoia_check(info, tty->name, "rs_wait_until_sent"))
+ return;
+
+ orig_jiffies = jiffies;
+ /*
+ * Set the check interval to be 1/5 of the estimated time to
+ * send a single character, and make it at least 1. The check
+ * interval should also be less than the timeout.
+ */
+ char_time = (info->timeout - HZ/50) / info->xmit_fifo_size;
+ char_time = char_time / 5;
+ if (char_time == 0)
+ char_time = 1;
+ if (timeout)
+ char_time = min(char_time, timeout);
+ while ((read_zsreg(info->zs_channel, 1) & Tx_BUF_EMP) == 0) {
+ msleep_interruptible(jiffies_to_msecs(char_time));
+ if (signal_pending(current))
+ break;
+ if (timeout && time_after(jiffies, orig_jiffies + timeout))
+ break;
+ }
+ current->state = TASK_RUNNING;
+}
+
+/*
+ * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
+ */
+void rs_hangup(struct tty_struct *tty)
+{
+ struct dec_serial * info = (struct dec_serial *)tty->driver_data;
+
+ if (serial_paranoia_check(info, tty->name, "rs_hangup"))
+ return;
+
+ rs_flush_buffer(tty);
+ shutdown(info);
+ info->event = 0;
+ info->count = 0;
+ info->flags &= ~ZILOG_NORMAL_ACTIVE;
+ info->tty = 0;
+ wake_up_interruptible(&info->open_wait);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_open() and friends
+ * ------------------------------------------------------------
+ */
+static int block_til_ready(struct tty_struct *tty, struct file * filp,
+ struct dec_serial *info)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ int retval;
+ int do_clocal = 0;
+
+ /*
+ * If the device is in the middle of being closed, then block
+ * until it's done, and then try again.
+ */
+ if (info->flags & ZILOG_CLOSING) {
+ interruptible_sleep_on(&info->close_wait);
+#ifdef SERIAL_DO_RESTART
+ return ((info->flags & ZILOG_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS);
+#else
+ return -EAGAIN;
+#endif
+ }
+
+ /*
+ * If non-blocking mode is set, or the port is not enabled,
+ * then make the check up front and then exit.
+ */
+ if ((filp->f_flags & O_NONBLOCK) ||
+ (tty->flags & (1 << TTY_IO_ERROR))) {
+ info->flags |= ZILOG_NORMAL_ACTIVE;
+ return 0;
+ }
+
+ if (tty->termios->c_cflag & CLOCAL)
+ do_clocal = 1;
+
+ /*
+ * Block waiting for the carrier detect and the line to become
+ * free (i.e., not in use by the callout). While we are in
+ * this loop, info->count is dropped by one, so that
+ * rs_close() knows when to free things. We restore it upon
+ * exit, either normal or abnormal.
+ */
+ retval = 0;
+ add_wait_queue(&info->open_wait, &wait);
+#ifdef SERIAL_DEBUG_OPEN
+ printk("block_til_ready before block: ttyS%d, count = %d\n",
+ info->line, info->count);
+#endif
+ cli();
+ if (!tty_hung_up_p(filp))
+ info->count--;
+ sti();
+ info->blocked_open++;
+ while (1) {
+ cli();
+ if (tty->termios->c_cflag & CBAUD)
+ zs_rtsdtr(info, RTS | DTR, 1);
+ sti();
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (tty_hung_up_p(filp) ||
+ !(info->flags & ZILOG_INITIALIZED)) {
+#ifdef SERIAL_DO_RESTART
+ if (info->flags & ZILOG_HUP_NOTIFY)
+ retval = -EAGAIN;
+ else
+ retval = -ERESTARTSYS;
+#else
+ retval = -EAGAIN;
+#endif
+ break;
+ }
+ if (!(info->flags & ZILOG_CLOSING) &&
+ (do_clocal || (read_zsreg(info->zs_channel, 0) & DCD)))
+ break;
+ if (signal_pending(current)) {
+ retval = -ERESTARTSYS;
+ break;
+ }
+#ifdef SERIAL_DEBUG_OPEN
+ printk("block_til_ready blocking: ttyS%d, count = %d\n",
+ info->line, info->count);
+#endif
+ schedule();
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&info->open_wait, &wait);
+ if (!tty_hung_up_p(filp))
+ info->count++;
+ info->blocked_open--;
+#ifdef SERIAL_DEBUG_OPEN
+ printk("block_til_ready after blocking: ttyS%d, count = %d\n",
+ info->line, info->count);
+#endif
+ if (retval)
+ return retval;
+ info->flags |= ZILOG_NORMAL_ACTIVE;
+ return 0;
+}
+
+/*
+ * This routine is called whenever a serial port is opened. It
+ * enables interrupts for a serial port, linking in its ZILOG structure into
+ * the IRQ chain. It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+int rs_open(struct tty_struct *tty, struct file * filp)
+{
+ struct dec_serial *info;
+ int retval, line;
+
+ line = tty->index;
+ if ((line < 0) || (line >= zs_channels_found))
+ return -ENODEV;
+ info = zs_soft + line;
+
+ if (info->hook)
+ return -ENODEV;
+
+ if (serial_paranoia_check(info, tty->name, "rs_open"))
+ return -ENODEV;
+#ifdef SERIAL_DEBUG_OPEN
+ printk("rs_open %s, count = %d\n", tty->name, info->count);
+#endif
+
+ info->count++;
+ tty->driver_data = info;
+ info->tty = tty;
+
+ /*
+ * If the port is the middle of closing, bail out now
+ */
+ if (tty_hung_up_p(filp) ||
+ (info->flags & ZILOG_CLOSING)) {
+ if (info->flags & ZILOG_CLOSING)
+ interruptible_sleep_on(&info->close_wait);
+#ifdef SERIAL_DO_RESTART
+ return ((info->flags & ZILOG_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS);
+#else
+ return -EAGAIN;
+#endif
+ }
+
+ /*
+ * Start up serial port
+ */
+ retval = zs_startup(info);
+ if (retval)
+ return retval;
+
+ retval = block_til_ready(tty, filp, info);
+ if (retval) {
+#ifdef SERIAL_DEBUG_OPEN
+ printk("rs_open returning after block_til_ready with %d\n",
+ retval);
+#endif
+ return retval;
+ }
+
+#ifdef CONFIG_SERIAL_DEC_CONSOLE
+ if (sercons.cflag && sercons.index == line) {
+ tty->termios->c_cflag = sercons.cflag;
+ sercons.cflag = 0;
+ change_speed(info);
+ }
+#endif
+
+#ifdef SERIAL_DEBUG_OPEN
+ printk("rs_open %s successful...", tty->name);
+#endif
+/* tty->low_latency = 1; */
+ return 0;
+}
+
+/* Finally, routines used to initialize the serial driver. */
+
+static void __init show_serial_version(void)
+{
+ printk("DECstation Z8530 serial driver version 0.09\n");
+}
+
+/* Initialize Z8530s zs_channels
+ */
+
+static void __init probe_sccs(void)
+{
+ struct dec_serial **pp;
+ int i, n, n_chips = 0, n_channels, chip, channel;
+ unsigned long flags;
+
+ /*
+ * did we get here by accident?
+ */
+ if(!BUS_PRESENT) {
+ printk("Not on JUNKIO machine, skipping probe_sccs\n");
+ return;
+ }
+
+ /*
+ * When serial console is activated, tc_init has not been called yet
+ * and system_base is undefined. Unfortunately we have to hardcode
+ * system_base for this case :-(. HK
+ */
+ switch(mips_machtype) {
+#ifdef CONFIG_MACH_DECSTATION
+ case MACH_DS5000_2X0:
+ case MACH_DS5900:
+ system_base = KSEG1ADDR(0x1f800000);
+ n_chips = 2;
+ zs_parms = &ds_parms;
+ zs_parms->irq0 = dec_interrupt[DEC_IRQ_SCC0];
+ zs_parms->irq1 = dec_interrupt[DEC_IRQ_SCC1];
+ break;
+ case MACH_DS5000_1XX:
+ system_base = KSEG1ADDR(0x1c000000);
+ n_chips = 2;
+ zs_parms = &ds_parms;
+ zs_parms->irq0 = dec_interrupt[DEC_IRQ_SCC0];
+ zs_parms->irq1 = dec_interrupt[DEC_IRQ_SCC1];
+ break;
+ case MACH_DS5000_XX:
+ system_base = KSEG1ADDR(0x1c000000);
+ n_chips = 1;
+ zs_parms = &ds_parms;
+ zs_parms->irq0 = dec_interrupt[DEC_IRQ_SCC0];
+ break;
+#endif
+ default:
+ panic("zs: unsupported bus");
+ }
+ if (!zs_parms)
+ panic("zs: uninitialized parms");
+
+ pp = &zs_chain;
+
+ n_channels = 0;
+
+ for (chip = 0; chip < n_chips; chip++) {
+ for (channel = 0; channel <= 1; channel++) {
+ /*
+ * The sccs reside on the high byte of the 16 bit IOBUS
+ */
+ zs_channels[n_channels].control =
+ (volatile unsigned char *)system_base +
+ (0 == chip ? zs_parms->scc0 : zs_parms->scc1) +
+ (0 == channel ? zs_parms->channel_a_offset :
+ zs_parms->channel_b_offset);
+ zs_channels[n_channels].data =
+ zs_channels[n_channels].control + 4;
+
+#ifndef CONFIG_SERIAL_DEC_CONSOLE
+ /*
+ * We're called early and memory managment isn't up, yet.
+ * Thus check_region would fail.
+ */
+ if (!request_region((unsigned long)
+ zs_channels[n_channels].control,
+ ZS_CHAN_IO_SIZE, "SCC"))
+ panic("SCC I/O region is not free");
+#endif
+ zs_soft[n_channels].zs_channel = &zs_channels[n_channels];
+ /* HACK alert! */
+ if (!(chip & 1))
+ zs_soft[n_channels].irq = zs_parms->irq0;
+ else
+ zs_soft[n_channels].irq = zs_parms->irq1;
+
+ /*
+ * Identification of channel A. Location of channel A
+ * inside chip depends on mapping of internal address
+ * the chip decodes channels by.
+ * CHANNEL_A_NR returns either 0 (in case of
+ * DECstations) or 1 (in case of Baget).
+ */
+ if (CHANNEL_A_NR == channel)
+ zs_soft[n_channels].zs_chan_a =
+ &zs_channels[n_channels+1-2*CHANNEL_A_NR];
+ else
+ zs_soft[n_channels].zs_chan_a =
+ &zs_channels[n_channels];
+
+ *pp = &zs_soft[n_channels];
+ pp = &zs_soft[n_channels].zs_next;
+ n_channels++;
+ }
+ }
+
+ *pp = 0;
+ zs_channels_found = n_channels;
+
+ for (n = 0; n < zs_channels_found; n++) {
+ for (i = 0; i < 16; i++) {
+ zs_soft[n].zs_channel->curregs[i] = zs_init_regs[i];
+ }
+ }
+
+ save_and_cli(flags);
+ for (n = 0; n < zs_channels_found; n++) {
+ if (n % 2 == 0) {
+ write_zsreg(zs_soft[n].zs_chan_a, R9, FHWRES);
+ udelay(10);
+ write_zsreg(zs_soft[n].zs_chan_a, R9, 0);
+ }
+ load_zsregs(zs_soft[n].zs_channel,
+ zs_soft[n].zs_channel->curregs);
+ }
+ restore_flags(flags);
+}
+
+static struct tty_operations serial_ops = {
+ .open = rs_open,
+ .close = rs_close,
+ .write = rs_write,
+ .flush_chars = rs_flush_chars,
+ .write_room = rs_write_room,
+ .chars_in_buffer = rs_chars_in_buffer,
+ .flush_buffer = rs_flush_buffer,
+ .ioctl = rs_ioctl,
+ .throttle = rs_throttle,
+ .unthrottle = rs_unthrottle,
+ .set_termios = rs_set_termios,
+ .stop = rs_stop,
+ .start = rs_start,
+ .hangup = rs_hangup,
+ .break_ctl = rs_break,
+ .wait_until_sent = rs_wait_until_sent,
+ .tiocmget = rs_tiocmget,
+ .tiocmset = rs_tiocmset,
+};
+
+/* zs_init inits the driver */
+int __init zs_init(void)
+{
+ int channel, i;
+ struct dec_serial *info;
+
+ if(!BUS_PRESENT)
+ return -ENODEV;
+
+ /* Setup base handler, and timer table. */
+ init_bh(SERIAL_BH, do_serial_bh);
+
+ /* Find out how many Z8530 SCCs we have */
+ if (zs_chain == 0)
+ probe_sccs();
+ serial_driver = alloc_tty_driver(zs_channels_found);
+ if (!serial_driver)
+ return -ENOMEM;
+
+ show_serial_version();
+
+ /* Initialize the tty_driver structure */
+ /* Not all of this is exactly right for us. */
+
+ serial_driver->owner = THIS_MODULE;
+ serial_driver->devfs_name = "tts/";
+ serial_driver->name = "ttyS";
+ serial_driver->major = TTY_MAJOR;
+ serial_driver->minor_start = 64;
+ serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ serial_driver->subtype = SERIAL_TYPE_NORMAL;
+ serial_driver->init_termios = tty_std_termios;
+ serial_driver->init_termios.c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+ tty_set_operations(serial_driver, &serial_ops);
+
+ if (tty_register_driver(serial_driver))
+ panic("Couldn't register serial driver");
+
+ for (info = zs_chain, i = 0; info; info = info->zs_next, i++) {
+
+ /* Needed before interrupts are enabled. */
+ info->tty = 0;
+ info->x_char = 0;
+
+ if (info->hook && info->hook->init_info) {
+ (*info->hook->init_info)(info);
+ continue;
+ }
+
+ info->magic = SERIAL_MAGIC;
+ info->port = (int) info->zs_channel->control;
+ info->line = i;
+ info->custom_divisor = 16;
+ info->close_delay = 50;
+ info->closing_wait = 3000;
+ info->event = 0;
+ info->count = 0;
+ info->blocked_open = 0;
+ info->tqueue.routine = do_softint;
+ info->tqueue.data = info;
+ init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->close_wait);
+ printk("ttyS%02d at 0x%08x (irq = %d) is a Z85C30 SCC\n",
+ info->line, info->port, info->irq);
+ tty_register_device(serial_driver, info->line, NULL);
+
+ }
+
+ for (channel = 0; channel < zs_channels_found; ++channel) {
+ zs_soft[channel].clk_divisor = 16;
+ zs_soft[channel].zs_baud = get_zsbaud(&zs_soft[channel]);
+
+ if (request_irq(zs_soft[channel].irq, rs_interrupt, SA_SHIRQ,
+ "scc", &zs_soft[channel]))
+ printk(KERN_ERR "decserial: can't get irq %d\n",
+ zs_soft[channel].irq);
+
+ if (zs_soft[channel].hook) {
+ zs_startup(&zs_soft[channel]);
+ if (zs_soft[channel].hook->init_channel)
+ (*zs_soft[channel].hook->init_channel)
+ (&zs_soft[channel]);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * polling I/O routines
+ */
+static int
+zs_poll_tx_char(void *handle, unsigned char ch)
+{
+ struct dec_serial *info = handle;
+ struct dec_zschannel *chan = info->zs_channel;
+ int ret;
+
+ if(chan) {
+ int loops = 10000;
+
+ while (loops && !(read_zsreg(chan, 0) & Tx_BUF_EMP))
+ loops--;
+
+ if (loops) {
+ write_zsdata(chan, ch);
+ ret = 0;
+ } else
+ ret = -EAGAIN;
+
+ return ret;
+ } else
+ return -ENODEV;
+}
+
+static int
+zs_poll_rx_char(void *handle)
+{
+ struct dec_serial *info = handle;
+ struct dec_zschannel *chan = info->zs_channel;
+ int ret;
+
+ if(chan) {
+ int loops = 10000;
+
+ while (loops && !(read_zsreg(chan, 0) & Rx_CH_AV))
+ loops--;
+
+ if (loops)
+ ret = read_zsdata(chan);
+ else
+ ret = -EAGAIN;
+
+ return ret;
+ } else
+ return -ENODEV;
+}
+
+int register_zs_hook(unsigned int channel, struct dec_serial_hook *hook)
+{
+ struct dec_serial *info = &zs_soft[channel];
+
+ if (info->hook) {
+ printk("%s: line %d has already a hook registered\n",
+ __FUNCTION__, channel);
+
+ return 0;
+ } else {
+ hook->poll_rx_char = zs_poll_rx_char;
+ hook->poll_tx_char = zs_poll_tx_char;
+ info->hook = hook;
+
+ return 1;
+ }
+}
+
+int unregister_zs_hook(unsigned int channel)
+{
+ struct dec_serial *info = &zs_soft[channel];
+
+ if (info->hook) {
+ info->hook = NULL;
+ return 1;
+ } else {
+ printk("%s: trying to unregister hook on line %d,"
+ " but none is registered\n", __FUNCTION__, channel);
+ return 0;
+ }
+}
+
+/*
+ * ------------------------------------------------------------
+ * Serial console driver
+ * ------------------------------------------------------------
+ */
+#ifdef CONFIG_SERIAL_DEC_CONSOLE
+
+
+/*
+ * Print a string to the serial port trying not to disturb
+ * any possible real use of the port...
+ */
+static void serial_console_write(struct console *co, const char *s,
+ unsigned count)
+{
+ struct dec_serial *info;
+ int i;
+
+ info = zs_soft + co->index;
+
+ for (i = 0; i < count; i++, s++) {
+ if(*s == '\n')
+ zs_poll_tx_char(info, '\r');
+ zs_poll_tx_char(info, *s);
+ }
+}
+
+static struct tty_driver *serial_console_device(struct console *c, int *index)
+{
+ *index = c->index;
+ return serial_driver;
+}
+
+/*
+ * Setup initial baud/bits/parity. We do two things here:
+ * - construct a cflag setting for the first rs_open()
+ * - initialize the serial port
+ * Return non-zero if we didn't find a serial port.
+ */
+static int __init serial_console_setup(struct console *co, char *options)
+{
+ struct dec_serial *info;
+ int baud = 9600;
+ int bits = 8;
+ int parity = 'n';
+ int cflag = CREAD | HUPCL | CLOCAL;
+ int clk_divisor = 16;
+ int brg;
+ char *s;
+ unsigned long flags;
+
+ if(!BUS_PRESENT)
+ return -ENODEV;
+
+ info = zs_soft + co->index;
+
+ if (zs_chain == 0)
+ probe_sccs();
+
+ info->is_cons = 1;
+
+ if (options) {
+ baud = simple_strtoul(options, NULL, 10);
+ s = options;
+ while(*s >= '0' && *s <= '9')
+ s++;
+ if (*s)
+ parity = *s++;
+ if (*s)
+ bits = *s - '0';
+ }
+
+ /*
+ * Now construct a cflag setting.
+ */
+ switch(baud) {
+ case 1200:
+ cflag |= B1200;
+ break;
+ case 2400:
+ cflag |= B2400;
+ break;
+ case 4800:
+ cflag |= B4800;
+ break;
+ case 19200:
+ cflag |= B19200;
+ break;
+ case 38400:
+ cflag |= B38400;
+ break;
+ case 57600:
+ cflag |= B57600;
+ break;
+ case 115200:
+ cflag |= B115200;
+ break;
+ case 9600:
+ default:
+ cflag |= B9600;
+ /*
+ * Set this to a sane value to prevent a divide error.
+ */
+ baud = 9600;
+ break;
+ }
+ switch(bits) {
+ case 7:
+ cflag |= CS7;
+ break;
+ default:
+ case 8:
+ cflag |= CS8;
+ break;
+ }
+ switch(parity) {
+ case 'o': case 'O':
+ cflag |= PARODD;
+ break;
+ case 'e': case 'E':
+ cflag |= PARENB;
+ break;
+ }
+ co->cflag = cflag;
+
+ save_and_cli(flags);
+
+ /*
+ * Set up the baud rate generator.
+ */
+ brg = BPS_TO_BRG(baud, zs_parms->clock / clk_divisor);
+ info->zs_channel->curregs[R12] = (brg & 255);
+ info->zs_channel->curregs[R13] = ((brg >> 8) & 255);
+
+ /*
+ * Set byte size and parity.
+ */
+ if (bits == 7) {
+ info->zs_channel->curregs[R3] |= Rx7;
+ info->zs_channel->curregs[R5] |= Tx7;
+ } else {
+ info->zs_channel->curregs[R3] |= Rx8;
+ info->zs_channel->curregs[R5] |= Tx8;
+ }
+ if (cflag & PARENB) {
+ info->zs_channel->curregs[R4] |= PAR_ENA;
+ }
+ if (!(cflag & PARODD)) {
+ info->zs_channel->curregs[R4] |= PAR_EVEN;
+ }
+ info->zs_channel->curregs[R4] |= SB1;
+
+ /*
+ * Turn on RTS and DTR.
+ */
+ zs_rtsdtr(info, RTS | DTR, 1);
+
+ /*
+ * Finally, enable sequencing.
+ */
+ info->zs_channel->curregs[R3] |= RxENABLE;
+ info->zs_channel->curregs[R5] |= TxENAB;
+
+ /*
+ * Clear the interrupt registers.
+ */
+ write_zsreg(info->zs_channel, R0, ERR_RES);
+ write_zsreg(info->zs_channel, R0, RES_H_IUS);
+
+ /*
+ * Load up the new values.
+ */
+ load_zsregs(info->zs_channel, info->zs_channel->curregs);
+
+ /* Save the current value of RR0 */
+ info->read_reg_zero = read_zsreg(info->zs_channel, R0);
+
+ zs_soft[co->index].clk_divisor = clk_divisor;
+ zs_soft[co->index].zs_baud = get_zsbaud(&zs_soft[co->index]);
+
+ restore_flags(flags);
+
+ return 0;
+}
+
+static struct console sercons = {
+ .name = "ttyS",
+ .write = serial_console_write,
+ .device = serial_console_device,
+ .setup = serial_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+};
+
+/*
+ * Register console.
+ */
+void __init zs_serial_console_init(void)
+{
+ register_console(&sercons);
+}
+#endif /* ifdef CONFIG_SERIAL_DEC_CONSOLE */
+
+#ifdef CONFIG_KGDB
+struct dec_zschannel *zs_kgdbchan;
+static unsigned char scc_inittab[] = {
+ 9, 0x80, /* reset A side (CHRA) */
+ 13, 0, /* set baud rate divisor */
+ 12, 1,
+ 14, 1, /* baud rate gen enable, src=rtxc (BRENABL) */
+ 11, 0x50, /* clocks = br gen (RCBR | TCBR) */
+ 5, 0x6a, /* tx 8 bits, assert RTS (Tx8 | TxENAB | RTS) */
+ 4, 0x44, /* x16 clock, 1 stop (SB1 | X16CLK)*/
+ 3, 0xc1, /* rx enable, 8 bits (RxENABLE | Rx8)*/
+};
+
+/* These are for receiving and sending characters under the kgdb
+ * source level kernel debugger.
+ */
+void putDebugChar(char kgdb_char)
+{
+ struct dec_zschannel *chan = zs_kgdbchan;
+ while ((read_zsreg(chan, 0) & Tx_BUF_EMP) == 0)
+ RECOVERY_DELAY;
+ write_zsdata(chan, kgdb_char);
+}
+char getDebugChar(void)
+{
+ struct dec_zschannel *chan = zs_kgdbchan;
+ while((read_zsreg(chan, 0) & Rx_CH_AV) == 0)
+ eieio(); /*barrier();*/
+ return read_zsdata(chan);
+}
+void kgdb_interruptible(int yes)
+{
+ struct dec_zschannel *chan = zs_kgdbchan;
+ int one, nine;
+ nine = read_zsreg(chan, 9);
+ if (yes == 1) {
+ one = EXT_INT_ENAB|RxINT_ALL;
+ nine |= MIE;
+ printk("turning serial ints on\n");
+ } else {
+ one = RxINT_DISAB;
+ nine &= ~MIE;
+ printk("turning serial ints off\n");
+ }
+ write_zsreg(chan, 1, one);
+ write_zsreg(chan, 9, nine);
+}
+
+static int kgdbhook_init_channel(void *handle)
+{
+ return 0;
+}
+
+static void kgdbhook_init_info(void *handle)
+{
+}
+
+static void kgdbhook_rx_char(void *handle, unsigned char ch, unsigned char fl)
+{
+ struct dec_serial *info = handle;
+
+ if (fl != TTY_NORMAL)
+ return;
+ if (ch == 0x03 || ch == '$')
+ breakpoint();
+}
+
+/* This sets up the serial port we're using, and turns on
+ * interrupts for that channel, so kgdb is usable once we're done.
+ */
+static inline void kgdb_chaninit(struct dec_zschannel *ms, int intson, int bps)
+{
+ int brg;
+ int i, x;
+ volatile char *sccc = ms->control;
+ brg = BPS_TO_BRG(bps, zs_parms->clock/16);
+ printk("setting bps on kgdb line to %d [brg=%x]\n", bps, brg);
+ for (i = 20000; i != 0; --i) {
+ x = *sccc; eieio();
+ }
+ for (i = 0; i < sizeof(scc_inittab); ++i) {
+ write_zsreg(ms, scc_inittab[i], scc_inittab[i+1]);
+ i++;
+ }
+}
+/* This is called at boot time to prime the kgdb serial debugging
+ * serial line. The 'tty_num' argument is 0 for /dev/ttya and 1
+ * for /dev/ttyb which is determined in setup_arch() from the
+ * boot command line flags.
+ */
+struct dec_serial_hook zs_kgdbhook = {
+ .init_channel = kgdbhook_init_channel,
+ .init_info = kgdbhook_init_info,
+ .rx_char = kgdbhook_rx_char,
+ .cflags = B38400 | CS8 | CLOCAL,
+}
+
+void __init zs_kgdb_hook(int tty_num)
+{
+ /* Find out how many Z8530 SCCs we have */
+ if (zs_chain == 0)
+ probe_sccs();
+ zs_soft[tty_num].zs_channel = &zs_channels[tty_num];
+ zs_kgdbchan = zs_soft[tty_num].zs_channel;
+ zs_soft[tty_num].change_needed = 0;
+ zs_soft[tty_num].clk_divisor = 16;
+ zs_soft[tty_num].zs_baud = 38400;
+ zs_soft[tty_num].hook = &zs_kgdbhook; /* This runs kgdb */
+ /* Turn on transmitter/receiver at 8-bits/char */
+ kgdb_chaninit(zs_soft[tty_num].zs_channel, 1, 38400);
+ printk("KGDB: on channel %d initialized\n", tty_num);
+ set_debug_traps(); /* init stub */
+}
+#endif /* ifdef CONFIG_KGDB */
+
+
diff --git a/drivers/tc/zs.h b/drivers/tc/zs.h
new file mode 100644
index 0000000..c52edff
--- /dev/null
+++ b/drivers/tc/zs.h
@@ -0,0 +1,405 @@
+/*
+ * drivers/tc/zs.h: Definitions for the DECstation Z85C30 serial driver.
+ *
+ * Adapted from drivers/sbus/char/sunserial.h by Paul Mackerras.
+ * Adapted from drivers/macintosh/macserial.h by Harald Koerfgen.
+ *
+ * Copyright (C) 1996 Paul Mackerras (Paul.Mackerras@cs.anu.edu.au)
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 2004 Maciej W. Rozycki
+ */
+#ifndef _DECSERIAL_H
+#define _DECSERIAL_H
+
+#include <asm/dec/serial.h>
+
+#define NUM_ZSREGS 16
+
+struct serial_struct {
+ int type;
+ int line;
+ int port;
+ int irq;
+ int flags;
+ int xmit_fifo_size;
+ int custom_divisor;
+ int baud_base;
+ unsigned short close_delay;
+ char reserved_char[2];
+ int hub6;
+ unsigned short closing_wait; /* time to wait before closing */
+ unsigned short closing_wait2; /* no longer used... */
+ int reserved[4];
+};
+
+/*
+ * For the close wait times, 0 means wait forever for serial port to
+ * flush its output. 65535 means don't wait at all.
+ */
+#define ZILOG_CLOSING_WAIT_INF 0
+#define ZILOG_CLOSING_WAIT_NONE 65535
+
+/*
+ * Definitions for ZILOG_struct (and serial_struct) flags field
+ */
+#define ZILOG_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes
+ on the callout port */
+#define ZILOG_FOURPORT 0x0002 /* Set OU1, OUT2 per AST Fourport settings */
+#define ZILOG_SAK 0x0004 /* Secure Attention Key (Orange book) */
+#define ZILOG_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
+
+#define ZILOG_SPD_MASK 0x0030
+#define ZILOG_SPD_HI 0x0010 /* Use 56000 instead of 38400 bps */
+
+#define ZILOG_SPD_VHI 0x0020 /* Use 115200 instead of 38400 bps */
+#define ZILOG_SPD_CUST 0x0030 /* Use user-specified divisor */
+
+#define ZILOG_SKIP_TEST 0x0040 /* Skip UART test during autoconfiguration */
+#define ZILOG_AUTO_IRQ 0x0080 /* Do automatic IRQ during autoconfiguration */
+#define ZILOG_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
+#define ZILOG_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
+#define ZILOG_CALLOUT_NOHUP 0x0400 /* Don't do hangups for cua device */
+
+#define ZILOG_FLAGS 0x0FFF /* Possible legal ZILOG flags */
+#define ZILOG_USR_MASK 0x0430 /* Legal flags that non-privileged
+ * users can set or reset */
+
+/* Internal flags used only by kernel/chr_drv/serial.c */
+#define ZILOG_INITIALIZED 0x80000000 /* Serial port was initialized */
+#define ZILOG_CALLOUT_ACTIVE 0x40000000 /* Call out device is active */
+#define ZILOG_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
+#define ZILOG_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
+#define ZILOG_CLOSING 0x08000000 /* Serial port is closing */
+#define ZILOG_CTS_FLOW 0x04000000 /* Do CTS flow control */
+#define ZILOG_CHECK_CD 0x02000000 /* i.e., CLOCAL */
+
+/* Software state per channel */
+
+#ifdef __KERNEL__
+/*
+ * This is our internal structure for each serial port's state.
+ *
+ * Many fields are paralleled by the structure used by the serial_struct
+ * structure.
+ *
+ * For definitions of the flags field, see tty.h
+ */
+
+struct dec_zschannel {
+ volatile unsigned char *control;
+ volatile unsigned char *data;
+
+ /* Current write register values */
+ unsigned char curregs[NUM_ZSREGS];
+};
+
+struct dec_serial {
+ struct dec_serial *zs_next; /* For IRQ servicing chain. */
+ struct dec_zschannel *zs_channel; /* Channel registers. */
+ struct dec_zschannel *zs_chan_a; /* A side registers. */
+ unsigned char read_reg_zero;
+
+ struct dec_serial_hook *hook; /* Hook on this channel. */
+ int tty_break; /* Set on BREAK condition. */
+ int is_cons; /* Is this our console. */
+ int tx_active; /* Char is being xmitted. */
+ int tx_stopped; /* Output is suspended. */
+
+ /*
+ * We need to know the current clock divisor
+ * to read the bps rate the chip has currently loaded.
+ */
+ int clk_divisor; /* May be 1, 16, 32, or 64. */
+ int zs_baud;
+
+ char change_needed;
+
+ int magic;
+ int baud_base;
+ int port;
+ int irq;
+ int flags; /* Defined in tty.h. */
+ int type; /* UART type. */
+ struct tty_struct *tty;
+ int read_status_mask;
+ int ignore_status_mask;
+ int timeout;
+ int xmit_fifo_size;
+ int custom_divisor;
+ int x_char; /* XON/XOFF character. */
+ int close_delay;
+ unsigned short closing_wait;
+ unsigned short closing_wait2;
+ unsigned long event;
+ unsigned long last_active;
+ int line;
+ int count; /* # of fds on device. */
+ int blocked_open; /* # of blocked opens. */
+ unsigned char *xmit_buf;
+ int xmit_head;
+ int xmit_tail;
+ int xmit_cnt;
+ struct tq_struct tqueue;
+ struct tq_struct tqueue_hangup;
+ wait_queue_head_t open_wait;
+ wait_queue_head_t close_wait;
+};
+
+
+#define SERIAL_MAGIC 0x5301
+
+/*
+ * The size of the serial xmit buffer is 1 page, or 4096 bytes
+ */
+#define SERIAL_XMIT_SIZE 4096
+
+/*
+ * Events are used to schedule things to happen at timer-interrupt
+ * time, instead of at rs interrupt time.
+ */
+#define RS_EVENT_WRITE_WAKEUP 0
+
+#endif /* __KERNEL__ */
+
+/* Conversion routines to/from brg time constants from/to bits
+ * per second.
+ */
+#define BRG_TO_BPS(brg, freq) ((freq) / 2 / ((brg) + 2))
+#define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
+
+/* The Zilog register set */
+
+#define FLAG 0x7e
+
+/* Write Register 0 */
+#define R0 0 /* Register selects */
+#define R1 1
+#define R2 2
+#define R3 3
+#define R4 4
+#define R5 5
+#define R6 6
+#define R7 7
+#define R8 8
+#define R9 9
+#define R10 10
+#define R11 11
+#define R12 12
+#define R13 13
+#define R14 14
+#define R15 15
+
+#define NULLCODE 0 /* Null Code */
+#define POINT_HIGH 0x8 /* Select upper half of registers */
+#define RES_EXT_INT 0x10 /* Reset Ext. Status Interrupts */
+#define SEND_ABORT 0x18 /* HDLC Abort */
+#define RES_RxINT_FC 0x20 /* Reset RxINT on First Character */
+#define RES_Tx_P 0x28 /* Reset TxINT Pending */
+#define ERR_RES 0x30 /* Error Reset */
+#define RES_H_IUS 0x38 /* Reset highest IUS */
+
+#define RES_Rx_CRC 0x40 /* Reset Rx CRC Checker */
+#define RES_Tx_CRC 0x80 /* Reset Tx CRC Checker */
+#define RES_EOM_L 0xC0 /* Reset EOM latch */
+
+/* Write Register 1 */
+
+#define EXT_INT_ENAB 0x1 /* Ext Int Enable */
+#define TxINT_ENAB 0x2 /* Tx Int Enable */
+#define PAR_SPEC 0x4 /* Parity is special condition */
+
+#define RxINT_DISAB 0 /* Rx Int Disable */
+#define RxINT_FCERR 0x8 /* Rx Int on First Character Only or Error */
+#define RxINT_ALL 0x10 /* Int on all Rx Characters or error */
+#define RxINT_ERR 0x18 /* Int on error only */
+#define RxINT_MASK 0x18
+
+#define WT_RDY_RT 0x20 /* Wait/Ready on R/T */
+#define WT_FN_RDYFN 0x40 /* Wait/FN/Ready FN */
+#define WT_RDY_ENAB 0x80 /* Wait/Ready Enable */
+
+/* Write Register #2 (Interrupt Vector) */
+
+/* Write Register 3 */
+
+#define RxENABLE 0x1 /* Rx Enable */
+#define SYNC_L_INH 0x2 /* Sync Character Load Inhibit */
+#define ADD_SM 0x4 /* Address Search Mode (SDLC) */
+#define RxCRC_ENAB 0x8 /* Rx CRC Enable */
+#define ENT_HM 0x10 /* Enter Hunt Mode */
+#define AUTO_ENAB 0x20 /* Auto Enables */
+#define Rx5 0x0 /* Rx 5 Bits/Character */
+#define Rx7 0x40 /* Rx 7 Bits/Character */
+#define Rx6 0x80 /* Rx 6 Bits/Character */
+#define Rx8 0xc0 /* Rx 8 Bits/Character */
+#define RxNBITS_MASK 0xc0
+
+/* Write Register 4 */
+
+#define PAR_ENA 0x1 /* Parity Enable */
+#define PAR_EVEN 0x2 /* Parity Even/Odd* */
+
+#define SYNC_ENAB 0 /* Sync Modes Enable */
+#define SB1 0x4 /* 1 stop bit/char */
+#define SB15 0x8 /* 1.5 stop bits/char */
+#define SB2 0xc /* 2 stop bits/char */
+#define SB_MASK 0xc
+
+#define MONSYNC 0 /* 8 Bit Sync character */
+#define BISYNC 0x10 /* 16 bit sync character */
+#define SDLC 0x20 /* SDLC Mode (01111110 Sync Flag) */
+#define EXTSYNC 0x30 /* External Sync Mode */
+
+#define X1CLK 0x0 /* x1 clock mode */
+#define X16CLK 0x40 /* x16 clock mode */
+#define X32CLK 0x80 /* x32 clock mode */
+#define X64CLK 0xC0 /* x64 clock mode */
+#define XCLK_MASK 0xC0
+
+/* Write Register 5 */
+
+#define TxCRC_ENAB 0x1 /* Tx CRC Enable */
+#define RTS 0x2 /* RTS */
+#define SDLC_CRC 0x4 /* SDLC/CRC-16 */
+#define TxENAB 0x8 /* Tx Enable */
+#define SND_BRK 0x10 /* Send Break */
+#define Tx5 0x0 /* Tx 5 bits (or less)/character */
+#define Tx7 0x20 /* Tx 7 bits/character */
+#define Tx6 0x40 /* Tx 6 bits/character */
+#define Tx8 0x60 /* Tx 8 bits/character */
+#define TxNBITS_MASK 0x60
+#define DTR 0x80 /* DTR */
+
+/* Write Register 6 (Sync bits 0-7/SDLC Address Field) */
+
+/* Write Register 7 (Sync bits 8-15/SDLC 01111110) */
+
+/* Write Register 8 (transmit buffer) */
+
+/* Write Register 9 (Master interrupt control) */
+#define VIS 1 /* Vector Includes Status */
+#define NV 2 /* No Vector */
+#define DLC 4 /* Disable Lower Chain */
+#define MIE 8 /* Master Interrupt Enable */
+#define STATHI 0x10 /* Status high */
+#define SOFTACK 0x20 /* Software Interrupt Acknowledge */
+#define NORESET 0 /* No reset on write to R9 */
+#define CHRB 0x40 /* Reset channel B */
+#define CHRA 0x80 /* Reset channel A */
+#define FHWRES 0xc0 /* Force hardware reset */
+
+/* Write Register 10 (misc control bits) */
+#define BIT6 1 /* 6 bit/8bit sync */
+#define LOOPMODE 2 /* SDLC Loop mode */
+#define ABUNDER 4 /* Abort/flag on SDLC xmit underrun */
+#define MARKIDLE 8 /* Mark/flag on idle */
+#define GAOP 0x10 /* Go active on poll */
+#define NRZ 0 /* NRZ mode */
+#define NRZI 0x20 /* NRZI mode */
+#define FM1 0x40 /* FM1 (transition = 1) */
+#define FM0 0x60 /* FM0 (transition = 0) */
+#define CRCPS 0x80 /* CRC Preset I/O */
+
+/* Write Register 11 (Clock Mode control) */
+#define TRxCXT 0 /* TRxC = Xtal output */
+#define TRxCTC 1 /* TRxC = Transmit clock */
+#define TRxCBR 2 /* TRxC = BR Generator Output */
+#define TRxCDP 3 /* TRxC = DPLL output */
+#define TRxCOI 4 /* TRxC O/I */
+#define TCRTxCP 0 /* Transmit clock = RTxC pin */
+#define TCTRxCP 8 /* Transmit clock = TRxC pin */
+#define TCBR 0x10 /* Transmit clock = BR Generator output */
+#define TCDPLL 0x18 /* Transmit clock = DPLL output */
+#define RCRTxCP 0 /* Receive clock = RTxC pin */
+#define RCTRxCP 0x20 /* Receive clock = TRxC pin */
+#define RCBR 0x40 /* Receive clock = BR Generator output */
+#define RCDPLL 0x60 /* Receive clock = DPLL output */
+#define RTxCX 0x80 /* RTxC Xtal/No Xtal */
+
+/* Write Register 12 (lower byte of baud rate generator time constant) */
+
+/* Write Register 13 (upper byte of baud rate generator time constant) */
+
+/* Write Register 14 (Misc control bits) */
+#define BRENABL 1 /* Baud rate generator enable */
+#define BRSRC 2 /* Baud rate generator source */
+#define DTRREQ 4 /* DTR/Request function */
+#define AUTOECHO 8 /* Auto Echo */
+#define LOOPBAK 0x10 /* Local loopback */
+#define SEARCH 0x20 /* Enter search mode */
+#define RMC 0x40 /* Reset missing clock */
+#define DISDPLL 0x60 /* Disable DPLL */
+#define SSBR 0x80 /* Set DPLL source = BR generator */
+#define SSRTxC 0xa0 /* Set DPLL source = RTxC */
+#define SFMM 0xc0 /* Set FM mode */
+#define SNRZI 0xe0 /* Set NRZI mode */
+
+/* Write Register 15 (external/status interrupt control) */
+#define ZCIE 2 /* Zero count IE */
+#define DCDIE 8 /* DCD IE */
+#define SYNCIE 0x10 /* Sync/hunt IE */
+#define CTSIE 0x20 /* CTS IE */
+#define TxUIE 0x40 /* Tx Underrun/EOM IE */
+#define BRKIE 0x80 /* Break/Abort IE */
+
+
+/* Read Register 0 */
+#define Rx_CH_AV 0x1 /* Rx Character Available */
+#define ZCOUNT 0x2 /* Zero count */
+#define Tx_BUF_EMP 0x4 /* Tx Buffer empty */
+#define DCD 0x8 /* DCD */
+#define SYNC_HUNT 0x10 /* Sync/hunt */
+#define CTS 0x20 /* CTS */
+#define TxEOM 0x40 /* Tx underrun */
+#define BRK_ABRT 0x80 /* Break/Abort */
+
+/* Read Register 1 */
+#define ALL_SNT 0x1 /* All sent */
+/* Residue Data for 8 Rx bits/char programmed */
+#define RES3 0x8 /* 0/3 */
+#define RES4 0x4 /* 0/4 */
+#define RES5 0xc /* 0/5 */
+#define RES6 0x2 /* 0/6 */
+#define RES7 0xa /* 0/7 */
+#define RES8 0x6 /* 0/8 */
+#define RES18 0xe /* 1/8 */
+#define RES28 0x0 /* 2/8 */
+/* Special Rx Condition Interrupts */
+#define PAR_ERR 0x10 /* Parity error */
+#define Rx_OVR 0x20 /* Rx Overrun Error */
+#define FRM_ERR 0x40 /* CRC/Framing Error */
+#define END_FR 0x80 /* End of Frame (SDLC) */
+
+/* Read Register 2 (channel b only) - Interrupt vector */
+
+/* Read Register 3 (interrupt pending register) ch a only */
+#define CHBEXT 0x1 /* Channel B Ext/Stat IP */
+#define CHBTxIP 0x2 /* Channel B Tx IP */
+#define CHBRxIP 0x4 /* Channel B Rx IP */
+#define CHAEXT 0x8 /* Channel A Ext/Stat IP */
+#define CHATxIP 0x10 /* Channel A Tx IP */
+#define CHARxIP 0x20 /* Channel A Rx IP */
+
+/* Read Register 8 (receive data register) */
+
+/* Read Register 10 (misc status bits) */
+#define ONLOOP 2 /* On loop */
+#define LOOPSEND 0x10 /* Loop sending */
+#define CLK2MIS 0x40 /* Two clocks missing */
+#define CLK1MIS 0x80 /* One clock missing */
+
+/* Read Register 12 (lower byte of baud rate generator constant) */
+
+/* Read Register 13 (upper byte of baud rate generator constant) */
+
+/* Read Register 15 (value of WR 15) */
+
+/* Misc macros */
+#define ZS_CLEARERR(channel) (write_zsreg(channel, 0, ERR_RES))
+#define ZS_CLEARFIFO(channel) do { volatile unsigned char garbage; \
+ garbage = read_zsdata(channel); \
+ garbage = read_zsdata(channel); \
+ garbage = read_zsdata(channel); \
+ } while(0)
+
+#endif /* !(_DECSERIAL_H) */