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[src/trunk]: src/sys/external/bsd/drm2/dist Rework drm_dp_mst_topology.c.
details: https://anonhg.NetBSD.org/src/rev/cbd62dbd73c4
branches: trunk
changeset: 834920:cbd62dbd73c4
user: riastradh <riastradh%NetBSD.org@localhost>
date: Mon Aug 27 06:56:02 2018 +0000
description:
Rework drm_dp_mst_topology.c.
- Need <linux/device.h> for dev_name.
- Need <linux/export.h> for EXPORT_*.
- Need <linux/module.h> for THIS_MODULE.
- Ifdef out debugfs stuff.
- Mark unused variables as such.
- Convert to drm waitqueue. (There's even a lock here already...)
- Initialize and destroy mutexes appropriately.
- Ifdef out of_node. Hope nobody needed it!
diffstat:
sys/external/bsd/drm2/dist/drm/drm_dp_mst_topology.c | 73 ++++++++++++-
sys/external/bsd/drm2/dist/include/drm/drm_dp_mst_helper.h | 7 +-
2 files changed, 68 insertions(+), 12 deletions(-)
diffs (273 lines):
diff -r 4c64d6e5d9b5 -r cbd62dbd73c4 sys/external/bsd/drm2/dist/drm/drm_dp_mst_topology.c
--- a/sys/external/bsd/drm2/dist/drm/drm_dp_mst_topology.c Mon Aug 27 06:55:52 2018 +0000
+++ b/sys/external/bsd/drm2/dist/drm/drm_dp_mst_topology.c Mon Aug 27 06:56:02 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: drm_dp_mst_topology.c,v 1.2 2018/08/27 04:58:19 riastradh Exp $ */
+/* $NetBSD: drm_dp_mst_topology.c,v 1.3 2018/08/27 06:56:02 riastradh Exp $ */
/*
* Copyright © 2014 Red Hat
@@ -23,7 +23,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: drm_dp_mst_topology.c,v 1.2 2018/08/27 04:58:19 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: drm_dp_mst_topology.c,v 1.3 2018/08/27 06:56:02 riastradh Exp $");
#include <linux/kernel.h>
#include <linux/delay.h>
@@ -32,6 +32,9 @@
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/i2c.h>
+#include <linux/device.h>
+#include <linux/export.h>
+#include <linux/module.h>
#include <drm/drm_dp_mst_helper.h>
#include <drm/drmP.h>
@@ -44,8 +47,10 @@
* protocol. The helpers contain a topology manager and bandwidth manager.
* The helpers encapsulate the sending and received of sideband msgs.
*/
+#if IS_ENABLED(CONFIG_DEBUG_FS)
static bool dump_dp_payload_table(struct drm_dp_mst_topology_mgr *mgr,
char *buf);
+#endif
static int test_calc_pbn_mode(void);
static void drm_dp_put_port(struct drm_dp_mst_port *port);
@@ -324,7 +329,7 @@
u8 *replybuf, u8 replybuflen, bool hdr)
{
int ret;
- u8 crc4;
+ u8 crc4 __unused; /* XXX Mistake? */
if (hdr) {
u8 hdrlen;
@@ -762,10 +767,16 @@
struct drm_dp_mst_topology_mgr *mgr = mstb->mgr;
int ret;
+#ifdef __NetBSD__
+ mutex_lock(&mstb->mgr->qlock);
+ DRM_TIMED_WAIT_UNTIL(ret, &mgr->tx_waitq, &mstb->mgr->qlock, 4*HZ,
+ check_txmsg_state(mgr, txmsg));
+#else
ret = wait_event_timeout(mgr->tx_waitq,
check_txmsg_state(mgr, txmsg),
(4 * HZ));
mutex_lock(&mstb->mgr->qlock);
+#endif
if (ret > 0) {
if (txmsg->state == DRM_DP_SIDEBAND_TX_TIMEOUT) {
ret = -EIO;
@@ -859,10 +870,16 @@
mstb->tx_slots[1] = NULL;
wake_tx = true;
}
+#ifdef __NetBSD__
+ if (wake_tx)
+ DRM_WAKEUP_ONE(&mstb->mgr->tx_waitq, &mstb->mgr->qlock);
+ mutex_unlock(&mstb->mgr->qlock);
+#else
mutex_unlock(&mstb->mgr->qlock);
if (wake_tx)
wake_up(&mstb->mgr->tx_waitq);
+#endif
kref_put(kref, drm_dp_free_mst_branch_device);
}
@@ -1027,7 +1044,7 @@
*/
static bool drm_dp_port_setup_pdt(struct drm_dp_mst_port *port)
{
- int ret;
+ int ret __unused;
u8 rad[6], lct;
bool send_link = false;
switch (port->pdt) {
@@ -1051,7 +1068,7 @@
static void drm_dp_check_mstb_guid(struct drm_dp_mst_branch *mstb, u8 *guid)
{
- int ret;
+ int ret __unused;
memcpy(mstb->guid, guid, 16);
@@ -1520,7 +1537,11 @@
if (txmsg->seqno != -1)
txmsg->dst->tx_slots[txmsg->seqno] = NULL;
txmsg->state = DRM_DP_SIDEBAND_TX_TIMEOUT;
+#ifdef __NetBSD__
+ DRM_WAKEUP_ONE(&mgr->tx_waitq, &mgr->qlock);
+#else
wake_up(&mgr->tx_waitq);
+#endif
}
if (list_empty(&mgr->tx_msg_downq)) {
mgr->tx_down_in_progress = false;
@@ -1556,7 +1577,7 @@
static void drm_dp_send_link_address(struct drm_dp_mst_topology_mgr *mgr,
struct drm_dp_mst_branch *mstb)
{
- int len;
+ int len __unused;
struct drm_dp_sideband_msg_tx *txmsg;
int ret;
@@ -1610,7 +1631,7 @@
struct drm_dp_mst_branch *mstb,
struct drm_dp_mst_port *port)
{
- int len;
+ int len __unused;
struct drm_dp_sideband_msg_tx *txmsg;
int ret;
@@ -1678,7 +1699,7 @@
{
struct drm_dp_sideband_msg_tx *txmsg;
struct drm_dp_mst_branch *mstb;
- int len, ret, port_num;
+ int len __unused, ret, port_num;
port = drm_dp_get_validated_port_ref(mgr, port);
if (!port)
@@ -1925,7 +1946,7 @@
struct drm_dp_mst_port *port,
int offset, int size, u8 *bytes)
{
- int len;
+ int len __unused;
int ret;
struct drm_dp_sideband_msg_tx *txmsg;
struct drm_dp_mst_branch *mstb;
@@ -2181,7 +2202,7 @@
{
int len;
u8 replyblock[32];
- int replylen, origlen, curreply;
+ int replylen, origlen __unused, curreply;
int ret;
struct drm_dp_sideband_msg_rx *msg;
int basereg = up ? DP_SIDEBAND_MSG_UP_REQ_BASE : DP_SIDEBAND_MSG_DOWN_REP_BASE;
@@ -2280,9 +2301,14 @@
mutex_lock(&mgr->qlock);
txmsg->state = DRM_DP_SIDEBAND_TX_RX;
mstb->tx_slots[slot] = NULL;
+#ifdef __NetBSD__
+ DRM_WAKEUP_ONE(&mstb->mgr->tx_waitq, &mstb->mgr->qlock);
+ mutex_unlock(&mgr->qlock);
+#else
mutex_unlock(&mgr->qlock);
wake_up(&mgr->tx_waitq);
+#endif
}
return ret;
}
@@ -2743,6 +2769,7 @@
queue_work(system_long_wq, &mgr->tx_work);
}
+#if IS_ENABLED(CONFIG_DEBUG_FS)
static void drm_dp_mst_dump_mstb(struct seq_file *m,
struct drm_dp_mst_branch *mstb)
{
@@ -2863,6 +2890,7 @@
}
EXPORT_SYMBOL(drm_dp_mst_dump_topology);
+#endif /* IS_ENABLED(CONFIG_DEBUG_FS) */
static void drm_dp_tx_work(struct work_struct *work)
{
@@ -2938,16 +2966,27 @@
int max_dpcd_transaction_bytes,
int max_payloads, int conn_base_id)
{
+#ifdef __NetBSD__
+ linux_mutex_init(&mgr->lock);
+ linux_mutex_init(&mgr->qlock);
+ linux_mutex_init(&mgr->payload_lock);
+ linux_mutex_init(&mgr->destroy_connector_lock);
+#else
mutex_init(&mgr->lock);
mutex_init(&mgr->qlock);
mutex_init(&mgr->payload_lock);
mutex_init(&mgr->destroy_connector_lock);
+#endif
INIT_LIST_HEAD(&mgr->tx_msg_downq);
INIT_LIST_HEAD(&mgr->destroy_connector_list);
INIT_WORK(&mgr->work, drm_dp_mst_link_probe_work);
INIT_WORK(&mgr->tx_work, drm_dp_tx_work);
INIT_WORK(&mgr->destroy_connector_work, drm_dp_destroy_connector_work);
+#ifdef __NetBSD__
+ DRM_INIT_WAITQUEUE(&mgr->tx_waitq, "dpmstwait");
+#else
init_waitqueue_head(&mgr->tx_waitq);
+#endif
mgr->dev = dev;
mgr->aux = aux;
mgr->max_dpcd_transaction_bytes = max_dpcd_transaction_bytes;
@@ -2981,6 +3020,18 @@
mutex_unlock(&mgr->payload_lock);
mgr->dev = NULL;
mgr->aux = NULL;
+#ifdef __NetBSD__
+ DRM_DESTROY_WAITQUEUE(&mgr->tx_waitq);
+ linux_mutex_destroy(&mgr->destroy_connector_lock);
+ linux_mutex_destroy(&mgr->payload_lock);
+ linux_mutex_destroy(&mgr->qlock);
+ linux_mutex_destroy(&mgr->lock);
+#else
+ mutex_destroy(&mgr->destroy_connector_lock);
+ mutex_destroy(&mgr->payload_lock);
+ mutex_destroy(&mgr->qlock);
+ mutex_destroy(&mgr->lock);
+#endif
}
EXPORT_SYMBOL(drm_dp_mst_topology_mgr_destroy);
@@ -3084,7 +3135,9 @@
aux->ddc.class = I2C_CLASS_DDC;
aux->ddc.owner = THIS_MODULE;
aux->ddc.dev.parent = aux->dev;
+#ifndef __NetBSD__ /* XXX of? */
aux->ddc.dev.of_node = aux->dev->of_node;
+#endif
strlcpy(aux->ddc.name, aux->name ? aux->name : dev_name(aux->dev),
sizeof(aux->ddc.name));
diff -r 4c64d6e5d9b5 -r cbd62dbd73c4 sys/external/bsd/drm2/dist/include/drm/drm_dp_mst_helper.h
--- a/sys/external/bsd/drm2/dist/include/drm/drm_dp_mst_helper.h Mon Aug 27 06:55:52 2018 +0000
+++ b/sys/external/bsd/drm2/dist/include/drm/drm_dp_mst_helper.h Mon Aug 27 06:56:02 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: drm_dp_mst_helper.h,v 1.5 2018/08/27 06:44:53 riastradh Exp $ */
+/* $NetBSD: drm_dp_mst_helper.h,v 1.6 2018/08/27 06:56:02 riastradh Exp $ */
/*
* Copyright © 2014 Red Hat.
@@ -29,6 +29,7 @@
#include <linux/mutex.h>
#include <linux/types.h>
#include <linux/workqueue.h>
+#include <drm/drmP.h>
#include <drm/drm_dp_helper.h>
struct drm_dp_mst_branch;
@@ -460,7 +461,9 @@
unsigned long payload_mask;
unsigned long vcpi_mask;
-#ifndef __NetBSD__
+#ifdef __NetBSD__
+ drm_waitqueue_t tx_waitq;
+#else
wait_queue_head_t tx_waitq;
#endif
struct work_struct work;
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