<
" System gvimrc file for Mac OS X
" Author:	Benji Fisher <benji@member.AMS.org>
" Last Change: Thu Mar 09 09:00 AM 2006 EST
"
" Define Mac-standard keyboard shortcuts.

" We don't change 'cpoptions' here, because it would not be set properly when
" a .vimrc file is found later.  Thus don't use line continuation and use
" <special> in mappings.

nnoremap <special> <D-n> :confirm enew<CR>
vmap <special> <D-n> <Esc><D-n>gv
imap <special> <D-n> <C-O><D-n>
cmap <special> <D-n> <C-C><D-n>
omap <special> <D-n> <Esc><D-n>

nnoremap <special> <D-o> :browse confirm e<CR>
vmap <special> <D-o> <Esc><D-o>gv
imap <special> <D-o> <C-O><D-o>
cmap <special> <D-o> <C-C><D-o>
omap <special> <D-o> <Esc><D-o>

nnoremap <silent> <special> <D-w> :if winheight(2) < 0 <Bar> confirm enew <Bar> else <Bar> confirm close <Bar> endif<CR>
vmap <special> <D-w> <Esc><D-w>gv
imap <special> <D-w> <C-O><D-w>
cmap <special> <D-w> <C-C><D-w>
omap <special> <D-w> <Esc><D-w>

nnoremap <silent> <special> <D-s> :if expand("%") == ""<Bar>browse confirm w<Bar> else<Bar>confirm w<Bar>endif<CR>
vmap <special> <D-s> <Esc><D-s>gv
imap <special> <D-s> <C-O><D-s>
cmap <special> <D-s> <C-C><D-s>
omap <special> <D-s> <Esc><D-s>

nnoremap <special> <D-S-s> :browse confirm saveas<CR>
vmap <special> <D-S-s> <Esc><D-s>gv
imap <special> <D-S-s> <C-O><D-s>
cmap <special> <D-S-s> <C-C><D-s>
omap <special> <D-S-s> <Esc><D-s>

" From the Edit menu of SimpleText:
nnoremap <special> <D-z> u
vmap <special> <D-z> <Esc><D-z>gv
imap <special> <D-z> <C-O><D-z>
cmap <special> <D-z> <C-C><D-z>
omap <special> <D-z> <Esc><D-z>

vnoremap <special> <D-x> "+x

vnoremap <special> <D-c> "+y

cnoremap <special> <D-c> <C-Y>

nnoremap <special> <D-v> "+gP
cnoremap <special> <D-v> <C-R>+
execute 'vnoremap <script> <special> <D-v>' paste#paste_cmd['v']
execute 'inoremap <script> <special> <D-v>' paste#paste_cmd['i']

nnoremap <silent> <special> <D-a> :if &slm != ""<Bar>exe ":norm gggH<C-O>G"<Bar> else<Bar>exe ":norm ggVG"<Bar>endif<CR>
vmap <special> <D-a> <Esc><D-a>
imap <special> <D-a> <Esc><D-a>
cmap <special> <D-a> <C-C><D-a>
omap <special> <D-a> <Esc><D-a>

nnoremap <special> <D-f> /
vmap <special> <D-f> <Esc><D-f>
imap <special> <D-f> <Esc><D-f>pre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .ges { font-weight: bold; font-style: italic } /* Generic.EmphStrong */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
/*
* This code is licenced under 
* the General Public Licence
* version 2
*
* Copyright Adrian McMenamin 2005, 2006, 2007
* <adrian@mcmen.demon.co.uk>
* Requires firmware (BSD licenced) available from:
* http://linuxdc.cvs.sourceforge.net/linuxdc/linux-sh-dc/sound/oss/aica/firmware/
* or the maintainer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
*/

#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/firmware.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/io.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include <sound/info.h>
#include <asm/dma.h>
#include <mach/sysasic.h>
#include "aica.h"

MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
MODULE_DESCRIPTION("Dreamcast AICA sound (pcm) driver");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Yamaha/SEGA, AICA}}");
MODULE_FIRMWARE("aica_firmware.bin");

/* module parameters */
#define CARD_NAME "AICA"
static int index = -1;
static char *id;
static bool enable = 1;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
module_param(enable, bool, 0644);
MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");

/* Simple platform device */
static struct platform_device *pd;
static struct resource aica_memory_space[2] = {
	{
	 .name = "AICA ARM CONTROL",
	 .start = ARM_RESET_REGISTER,
	 .flags = IORESOURCE_MEM,
	 .end = ARM_RESET_REGISTER + 3,
	 },
	{
	 .name = "AICA Sound RAM",
	 .start = SPU_MEMORY_BASE,
	 .flags = IORESOURCE_MEM,
	 .end = SPU_MEMORY_BASE + 0x200000 - 1,
	 },
};

/* SPU specific functions */
/* spu_write_wait - wait for G2-SH FIFO to clear */
static void spu_write_wait(void)
{
	int time_count;
	time_count = 0;
	while (1) {
		if (!(readl(G2_FIFO) & 0x11))
			break;
		/* To ensure hardware failure doesn't wedge kernel */
		time_count++;
		if (time_count > 0x10000) {
			snd_printk
			    ("WARNING: G2 FIFO appears to be blocked.\n");
			break;
		}
	}
}

/* spu_memset - write to memory in SPU address space */
static void spu_memset(u32 toi, u32 what, int length)
{
	int i;
	unsigned long flags;
	if (snd_BUG_ON(length % 4))
		return;
	for (i = 0; i < length; i++) {
		if (!(i % 8))
			spu_write_wait();
		local_irq_save(flags);
		writel(what, toi + SPU_MEMORY_BASE);
		local_irq_restore(flags);
		toi++;
	}
}

/* spu_memload - write to SPU address space */
static void spu_memload(u32 toi, void *from, int length)
{
	unsigned long flags;
	u32 *froml = from;
	u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi);
	int i;
	u32 val;
	length = DIV_ROUND_UP(length, 4);
	spu_write_wait();
	for (i = 0; i < length; i++) {
		if (!(i % 8))
			spu_write_wait();
		val = *froml;
		local_irq_save(flags);
		writel(val, to);
		local_irq_restore(flags);
		froml++;
		to++;
	}
}

/* spu_disable - set spu registers to stop sound output */
static void spu_disable(void)
{
	int i;
	unsigned long flags;
	u32 regval;
	spu_write_wait();
	regval = readl(ARM_RESET_REGISTER);
	regval |= 1;
	spu_write_wait();
	local_irq_save(flags);
	writel(regval, ARM_RESET_REGISTER);
	local_irq_restore(flags);
	for (i = 0; i < 64; i++) {
		spu_write_wait();
		regval = readl(SPU_REGISTER_BASE + (i * 0x80));
		regval = (regval & ~0x4000) | 0x8000;
		spu_write_wait();
		local_irq_save(flags);
		writel(regval, SPU_REGISTER_BASE + (i * 0x80));
		local_irq_restore(flags);
	}
}

/* spu_enable - set spu registers to enable sound output */
static void spu_enable(void)
{
	unsigned long flags;
	u32 regval = readl(ARM_RESET_REGISTER);
	regval &= ~1;
	spu_write_wait();
	local_irq_save(flags);
	writel(regval, ARM_RESET_REGISTER);
	local_irq_restore(flags);
}

/* 
 * Halt the sound processor, clear the memory,
 * load some default ARM7 code, and then restart ARM7
*/
static void spu_reset(void)
{
	unsigned long flags;
	spu_disable();
	spu_memset(0, 0, 0x200000 / 4);
	/* Put ARM7 in endless loop */
	local_irq_save(flags);
	__raw_writel(0xea000002, SPU_MEMORY_BASE);
	local_irq_restore(flags);
	spu_enable();
}

/* aica_chn_start - write to spu to start playback */
static void aica_chn_start(void)
{
	unsigned long flags;
	spu_write_wait();
	local_irq_save(flags);
	writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT);
	local_irq_restore(flags);
}

/* aica_chn_halt - write to spu to halt playback */
static void aica_chn_halt(void)
{
	unsigned long flags;
	spu_write_wait();
	local_irq_save(flags);
	writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT);
	local_irq_restore(flags);
}

/* ALSA code below */
static const struct snd_pcm_hardware snd_pcm_aica_playback_hw = {
	.info = (SNDRV_PCM_INFO_NONINTERLEAVED),
	.formats =
	    (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |
	     SNDRV_PCM_FMTBIT_IMA_ADPCM),
	.rates = SNDRV_PCM_RATE_8000_48000,
	.rate_min = 8000,
	.rate_max = 48000,
	.channels_min = 1,
	.channels_max = 2,
	.buffer_bytes_max = AICA_BUFFER_SIZE,
	.period_bytes_min = AICA_PERIOD_SIZE,
	.period_bytes_max = AICA_PERIOD_SIZE,
	.periods_min = AICA_PERIOD_NUMBER,
	.periods_max = AICA_PERIOD_NUMBER,
};

static int aica_dma_transfer(int channels, int buffer_size,
			     struct snd_pcm_substream *substream)
{
	int q, err