Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/scjody/ieee1394

drivers/ieee1394/amdtp.h

-/* -*- c-basic-offset: 8 -*- */
-
-#ifndef __AMDTP_H
-#define __AMDTP_H
-
-#include <asm/types.h>
-#include "ieee1394-ioctl.h"
-
-/* The userspace interface for the Audio & Music Data Transmission
- * Protocol driver is really simple. First, open /dev/amdtp, use the
- * ioctl to configure format, rate, dimension and either plug or
- * channel, then start writing samples.
- *
- * The formats supported by the driver are listed below.
- * AMDTP_FORMAT_RAW corresponds to the AM824 raw format, which can
- * carry any number of channels, so use this if you're streaming
- * multichannel audio.  The AMDTP_FORMAT_IEC958_PCM corresponds to the
- * AM824 IEC958 encapsulation without the IEC958 data bit set, using
- * AMDTP_FORMAT_IEC958_AC3 will transmit the samples with the data bit
- * set, suitable for transmitting compressed AC-3 audio.
- *
- * The rate field specifies the transmission rate; supported values
- * are 32000, 44100, 48000, 88200, 96000, 176400 and 192000.
- *
- * The dimension field specifies the dimension of the signal, that is,
- * the number of audio channels.  Only AMDTP_FORMAT_RAW supports
- * settings greater than 2.
- *
- * The mode field specifies which transmission mode to use. The AMDTP
- * specifies two different transmission modes: blocking and
- * non-blocking.  The blocking transmission mode always send a fixed
- * number of samples, typically 8, 16 or 32.  To exactly match the
- * transmission rate, the driver alternates between sending empty and
- * non-empty packets.  In non-blocking mode, the driver transmits as
- * small packets as possible.  For example, for a transmission rate of
- * 44100Hz, the driver should send 5 41/80 samples in every cycle, but
- * this is not possible so instead the driver alternates between
- * sending 5 and 6 samples.
- *
- * The last thing to specify is either the isochronous channel to use
- * or the output plug to connect to.  If you know what channel the
- * destination device will listen on, you can specify the channel
- * directly and use the AMDTP_IOC_CHANNEL ioctl.  However, if the
- * destination device chooses the channel and uses the IEC61883-1 plug
- * mechanism, you can specify an output plug to connect to.  The
- * driver will pick up the channel number from the plug once the
- * destination device locks the output plug control register.  In this
- * case set the plug field and use the AMDTP_IOC_PLUG ioctl.
- *
- * Having configured the interface, the driver now accepts writes of
- * regular 16 bit signed little endian samples, with the channels
- * interleaved.  For example, 4 channels would look like:
- *
- *   | sample 0                                      | sample 1    ...
- *   | ch. 0     | ch. 1     | ch. 2     | ch. 3     | ch. 0     | ...
- *   | lsb | msb | lsb | msb | lsb | msb | lsb | msb | lsb | msb | ...
- *
- */
-
-enum {
-	AMDTP_FORMAT_RAW,
-	AMDTP_FORMAT_IEC958_PCM,
-	AMDTP_FORMAT_IEC958_AC3
-};
-
-enum {
-	AMDTP_MODE_BLOCKING,
-	AMDTP_MODE_NON_BLOCKING,
-};
-
-enum {
-	AMDTP_INPUT_LE16,
-	AMDTP_INPUT_BE16,
-};
-
-struct amdtp_ioctl {
-	__u32 format;
-	__u32 rate;
-	__u32 dimension;
-	__u32 mode;
-	union { __u32 channel; __u32 plug; } u;
-};
-
-#endif /* __AMDTP_H */

drivers/ieee1394/cmp.c

-/* -*- c-basic-offset: 8 -*-
- *
- * cmp.c - Connection Management Procedures
- * Copyright (C) 2001 Kristian Hgsberg
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- */
-
-/* TODO
- * ----
- *
- * - Implement IEC61883-1 output plugs and connection management.
- *   This should probably be part of the general subsystem, as it could
- *   be shared with dv1394.
- *
- * - Add IEC61883 unit directory when loading this module.  This
- *   requires a run-time changeable config rom.
- */
-
-#include <linux/module.h>
-#include <linux/list.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/wait.h>
-#include <linux/interrupt.h>
-
-#include "hosts.h"
-#include "highlevel.h"
-#include "ieee1394.h"
-#include "ieee1394_core.h"
-#include "cmp.h"
-
-struct plug {
-	union {
-		struct cmp_pcr pcr;
-		quadlet_t quadlet;
-	} u;
-	void (*update)(struct cmp_pcr *plug, void *data);
-	void *data;
-};
-
-struct cmp_host {
-	struct hpsb_host *host;
-
-	union {
-		struct cmp_mpr ompr;
-		quadlet_t ompr_quadlet;
-	} u;
-	struct plug opcr[2];
-
-	union {
-		struct cmp_mpr impr;
-		quadlet_t impr_quadlet;
-	} v;
-	struct plug ipcr[2];
-};
-
-enum {
-	CMP_P2P_CONNECTION,
-	CMP_BC_CONNECTION
-};
-
-#define CSR_PCR_MAP      0x900
-#define CSR_PCR_MAP_END  0x9fc
-
-static struct hpsb_highlevel cmp_highlevel;
-
-static void cmp_add_host(struct hpsb_host *host);
-static void cmp_host_reset(struct hpsb_host *host);
-static int pcr_read(struct hpsb_host *host, int nodeid, quadlet_t *buf,
-		    u64 addr, size_t length, u16 flags);
-static int pcr_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
-		    u64 addr, quadlet_t data, quadlet_t arg, int extcode, u16 flags);
-
-static struct hpsb_highlevel cmp_highlevel = {
-	.name =		"cmp",
-	.add_host =	cmp_add_host,
-	.host_reset =	cmp_host_reset,
-};
-
-static struct hpsb_address_ops pcr_ops = {
-	.read =	pcr_read,
-	.lock =	pcr_lock,
-};
-
-
-struct cmp_pcr *
-cmp_register_opcr(struct hpsb_host *host, int opcr_number, int payload,
-		  void (*update)(struct cmp_pcr *pcr, void *data),
-		  void *data)
-{
-	struct cmp_host *ch;
-	struct plug *plug;
-
-	ch = hpsb_get_hostinfo(&cmp_highlevel, host);
-
-	if (opcr_number >= ch->u.ompr.nplugs ||
-	    ch->opcr[opcr_number].update != NULL)
-		return NULL;
-
-	plug = &ch->opcr[opcr_number];
-	plug->u.pcr.online = 1;
-	plug->u.pcr.bcast_count = 0;
-	plug->u.pcr.p2p_count = 0;
-	plug->u.pcr.overhead = 0;
-	plug->u.pcr.payload = payload;
-	plug->update = update;
-	plug->data = data;
-
-	return &plug->u.pcr;
-}
-
-void cmp_unregister_opcr(struct hpsb_host *host, struct cmp_pcr *opcr)
-{
-	struct cmp_host *ch;
-	struct plug *plug;
-
-	ch = hpsb_get_hostinfo(&cmp_highlevel, host);
-	plug = (struct plug *)opcr;
-	if (plug - ch->opcr >= ch->u.ompr.nplugs) BUG();
-
-	plug->u.pcr.online = 0;
-	plug->update = NULL;
-}
-
-static void reset_plugs(struct cmp_host *ch)
-{
-	int i;
-
-	ch->u.ompr.non_persistent_ext = 0xff;
-	for (i = 0; i < ch->u.ompr.nplugs; i++) {
-		ch->opcr[i].u.pcr.bcast_count = 0;
-		ch->opcr[i].u.pcr.p2p_count = 0;
-		ch->opcr[i].u.pcr.overhead = 0;
-	}
-}
-
-static void cmp_add_host(struct hpsb_host *host)
-{
-	struct cmp_host *ch = hpsb_create_hostinfo(&cmp_highlevel, host, sizeof (*ch));
-
-	if (ch == NULL) {
-		HPSB_ERR("Failed to allocate cmp_host");
-		return;
-	}
-
-	hpsb_register_addrspace(&cmp_highlevel, host, &pcr_ops,
-				CSR_REGISTER_BASE + CSR_PCR_MAP,
-				CSR_REGISTER_BASE + CSR_PCR_MAP_END);
-
-	ch->host = host;
-	ch->u.ompr.rate = IEEE1394_SPEED_100;
-	ch->u.ompr.bcast_channel_base = 63;
-	ch->u.ompr.nplugs = 2;
-
-	reset_plugs(ch);
-}
-
-static void cmp_host_reset(struct hpsb_host *host)
-{
-	struct cmp_host *ch;
-
-	ch = hpsb_get_hostinfo(&cmp_highlevel, host);
-	if (ch == NULL) {
-		HPSB_ERR("cmp: Tried to reset unknown host");
-		return;
-	}
-
-	reset_plugs(ch);
-}
-
-static int pcr_read(struct hpsb_host *host, int nodeid, quadlet_t *buf,
-		    u64 addr, size_t length, u16 flags)
-{
-	int csraddr = addr - CSR_REGISTER_BASE;
-	int plug;
-	struct cmp_host *ch;
-
-	if (length != 4)
-		return RCODE_TYPE_ERROR;
-
-	ch = hpsb_get_hostinfo(&cmp_highlevel, host);
-	if (csraddr == 0x900) {
-		*buf = cpu_to_be32(ch->u.ompr_quadlet);
-		return RCODE_COMPLETE;
-	}
-	else if (csraddr < 0x904 + ch->u.ompr.nplugs * 4) {
-		plug = (csraddr - 0x904) / 4;
-		*buf = cpu_to_be32(ch->opcr[plug].u.quadlet);
-		return RCODE_COMPLETE;
-	}
-	else if (csraddr < 0x980) {
-		return RCODE_ADDRESS_ERROR;
-	}
-	else if (csraddr == 0x980) {
-		*buf = cpu_to_be32(ch->v.impr_quadlet);
-		return RCODE_COMPLETE;
-	}
-	else if (csraddr < 0x984 + ch->v.impr.nplugs * 4) {
-		plug = (csraddr - 0x984) / 4;
-		*buf = cpu_to_be32(ch->ipcr[plug].u.quadlet);
-		return RCODE_COMPLETE;
-	}
-	else
-		return RCODE_ADDRESS_ERROR;
-}
-
-static int pcr_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
-		    u64 addr, quadlet_t data, quadlet_t arg, int extcode, u16 flags)
-{
-	int csraddr = addr - CSR_REGISTER_BASE;
-	int plug;
-	struct cmp_host *ch;
-
-	ch = hpsb_get_hostinfo(&cmp_highlevel, host);
-
-	if (extcode != EXTCODE_COMPARE_SWAP)
-		return RCODE_TYPE_ERROR;
-
-	if (csraddr == 0x900) {
-		/* FIXME: Ignore writes to bits 30-31 and 0-7 */
-		*store = cpu_to_be32(ch->u.ompr_quadlet);
-		if (arg == cpu_to_be32(ch->u.ompr_quadlet))
-			ch->u.ompr_quadlet = be32_to_cpu(data);
-
-		return RCODE_COMPLETE;
-	}
-	if (csraddr < 0x904 + ch->u.ompr.nplugs * 4) {
-		plug = (csraddr - 0x904) / 4;
-		*store = cpu_to_be32(ch->opcr[plug].u.quadlet);
-
-		if (arg == *store)
-			ch->opcr[plug].u.quadlet = be32_to_cpu(data);
-
-		if (be32_to_cpu(*store) != ch->opcr[plug].u.quadlet &&
-		    ch->opcr[plug].update != NULL)
-			ch->opcr[plug].update(&ch->opcr[plug].u.pcr,
-					      ch->opcr[plug].data);
-
-		return RCODE_COMPLETE;
-	}
-	else if (csraddr < 0x980) {
-		return RCODE_ADDRESS_ERROR;
-	}
-	else if (csraddr == 0x980) {
-		/* FIXME: Ignore writes to bits 24-31 and 0-7 */
-		*store = cpu_to_be32(ch->u.ompr_quadlet);
-		if (arg == cpu_to_be32(ch->u.ompr_quadlet))
-			ch->u.ompr_quadlet = be32_to_cpu(data);
-
-		return RCODE_COMPLETE;
-	}
-	else if (csraddr < 0x984 + ch->v.impr.nplugs * 4) {
-		plug = (csraddr - 0x984) / 4;
-		*store = cpu_to_be32(ch->ipcr[plug].u.quadlet);
-
-		if (arg == *store)
-			ch->ipcr[plug].u.quadlet = be32_to_cpu(data);
-
-		if (be32_to_cpu(*store) != ch->ipcr[plug].u.quadlet &&
-		    ch->ipcr[plug].update != NULL)
-			ch->ipcr[plug].update(&ch->ipcr[plug].u.pcr,
-					      ch->ipcr[plug].data);
-
-		return RCODE_COMPLETE;
-	}
-	else
-		return RCODE_ADDRESS_ERROR;
-}
-
-
-/* Module interface */
-
-MODULE_AUTHOR("Kristian Hogsberg <hogsberg@users.sf.net>");
-MODULE_DESCRIPTION("Connection Management Procedures (CMP)");
-MODULE_SUPPORTED_DEVICE("cmp");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(cmp_register_opcr);
-EXPORT_SYMBOL(cmp_unregister_opcr);
-
-static int __init cmp_init_module (void)
-{
-	hpsb_register_highlevel (&cmp_highlevel);
-
-	HPSB_INFO("Loaded CMP driver");
-
-	return 0;
-}
-
-static void __exit cmp_exit_module (void)
-{
-        hpsb_unregister_highlevel(&cmp_highlevel);
-
-	HPSB_INFO("Unloaded CMP driver");
-}
-
-module_init(cmp_init_module);
-module_exit(cmp_exit_module);

drivers/ieee1394/cmp.h

-#ifndef __CMP_H
-#define __CMP_H
-
-struct cmp_mpr {
-	u32 nplugs:5;
-	u32 reserved:3;
-	u32 persistent_ext:8;
-	u32 non_persistent_ext:8;
-	u32 bcast_channel_base:6;
-	u32 rate:2;
-} __attribute__((packed));
-
-struct cmp_pcr {
-	u32 payload:10;
-	u32 overhead:4;
-	u32 speed:2;
-	u32 channel:6;
-	u32 reserved:2;
-	u32 p2p_count:6;
-	u32 bcast_count:1;
-	u32 online:1;
-} __attribute__((packed));
-
-struct cmp_pcr *cmp_register_opcr(struct hpsb_host *host, int plug,
-				  int payload,
-				  void (*update)(struct cmp_pcr *plug,
-						 void *data),
-				  void *data);
-void cmp_unregister_opcr(struct hpsb_host *host, struct cmp_pcr *plug);
-
-#endif /* __CMP_H */