Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/ieee1394/cmp.c b/drivers/ieee1394/cmp.c
new file mode 100644
index 0000000..69aed26
--- /dev/null
+++ b/drivers/ieee1394/cmp.c
@@ -0,0 +1,311 @@
+/* -*- c-basic-offset: 8 -*-
+ *
+ * cmp.c - Connection Management Procedures
+ * Copyright (C) 2001 Kristian Høgsberg
+ *
+ * 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);