diff options
Diffstat (limited to 'drivers/tc')
| -rw-r--r-- | drivers/tc/Makefile | 23 | ||||
| -rw-r--r-- | drivers/tc/lk201-map.c_shipped | 265 | ||||
| -rw-r--r-- | drivers/tc/lk201-map.map | 356 | ||||
| -rw-r--r-- | drivers/tc/lk201-remap.c | 172 | ||||
| -rw-r--r-- | drivers/tc/lk201.c | 441 | ||||
| -rw-r--r-- | drivers/tc/lk201.h | 125 | ||||
| -rw-r--r-- | drivers/tc/tc.c | 260 | ||||
| -rw-r--r-- | drivers/tc/zs.c | 2253 | ||||
| -rw-r--r-- | drivers/tc/zs.h | 405 |
9 files changed, 4300 insertions, 0 deletions
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) */ |
