From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/gpu/drm/xen/xen_drm_front.c | 121 ++++++++++++++++-----------------------
1 files changed, 50 insertions(+), 71 deletions(-)
diff --git a/kernel/drivers/gpu/drm/xen/xen_drm_front.c b/kernel/drivers/gpu/drm/xen/xen_drm_front.c
index 1f6c914..8ea9154 100644
--- a/kernel/drivers/gpu/drm/xen/xen_drm_front.c
+++ b/kernel/drivers/gpu/drm/xen/xen_drm_front.c
@@ -8,17 +8,23 @@
* Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
*/
-#include <drm/drmP.h>
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_crtc_helper.h>
-#include <drm/drm_gem.h>
-
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
#include <linux/of_device.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_file.h>
+#include <drm/drm_gem.h>
#include <xen/platform_pci.h>
#include <xen/xen.h>
#include <xen/xenbus.h>
+#include <xen/xen-front-pgdir-shbuf.h>
#include <xen/interface/io/displif.h>
#include "xen_drm_front.h"
@@ -26,28 +32,20 @@
#include "xen_drm_front_evtchnl.h"
#include "xen_drm_front_gem.h"
#include "xen_drm_front_kms.h"
-#include "xen_drm_front_shbuf.h"
struct xen_drm_front_dbuf {
struct list_head list;
u64 dbuf_cookie;
u64 fb_cookie;
- struct xen_drm_front_shbuf *shbuf;
+
+ struct xen_front_pgdir_shbuf shbuf;
};
-static int dbuf_add_to_list(struct xen_drm_front_info *front_info,
- struct xen_drm_front_shbuf *shbuf, u64 dbuf_cookie)
+static void dbuf_add_to_list(struct xen_drm_front_info *front_info,
+ struct xen_drm_front_dbuf *dbuf, u64 dbuf_cookie)
{
- struct xen_drm_front_dbuf *dbuf;
-
- dbuf = kzalloc(sizeof(*dbuf), GFP_KERNEL);
- if (!dbuf)
- return -ENOMEM;
-
dbuf->dbuf_cookie = dbuf_cookie;
- dbuf->shbuf = shbuf;
list_add(&dbuf->list, &front_info->dbuf_list);
- return 0;
}
static struct xen_drm_front_dbuf *dbuf_get(struct list_head *dbuf_list,
@@ -62,15 +60,6 @@
return NULL;
}
-static void dbuf_flush_fb(struct list_head *dbuf_list, u64 fb_cookie)
-{
- struct xen_drm_front_dbuf *buf, *q;
-
- list_for_each_entry_safe(buf, q, dbuf_list, list)
- if (buf->fb_cookie == fb_cookie)
- xen_drm_front_shbuf_flush(buf->shbuf);
-}
-
static void dbuf_free(struct list_head *dbuf_list, u64 dbuf_cookie)
{
struct xen_drm_front_dbuf *buf, *q;
@@ -78,8 +67,8 @@
list_for_each_entry_safe(buf, q, dbuf_list, list)
if (buf->dbuf_cookie == dbuf_cookie) {
list_del(&buf->list);
- xen_drm_front_shbuf_unmap(buf->shbuf);
- xen_drm_front_shbuf_free(buf->shbuf);
+ xen_front_pgdir_shbuf_unmap(&buf->shbuf);
+ xen_front_pgdir_shbuf_free(&buf->shbuf);
kfree(buf);
break;
}
@@ -91,8 +80,8 @@
list_for_each_entry_safe(buf, q, dbuf_list, list) {
list_del(&buf->list);
- xen_drm_front_shbuf_unmap(buf->shbuf);
- xen_drm_front_shbuf_free(buf->shbuf);
+ xen_front_pgdir_shbuf_unmap(&buf->shbuf);
+ xen_front_pgdir_shbuf_free(&buf->shbuf);
kfree(buf);
}
}
@@ -168,12 +157,13 @@
int xen_drm_front_dbuf_create(struct xen_drm_front_info *front_info,
u64 dbuf_cookie, u32 width, u32 height,
- u32 bpp, u64 size, struct page **pages)
+ u32 bpp, u64 size, u32 offset,
+ struct page **pages)
{
struct xen_drm_front_evtchnl *evtchnl;
- struct xen_drm_front_shbuf *shbuf;
+ struct xen_drm_front_dbuf *dbuf;
struct xendispl_req *req;
- struct xen_drm_front_shbuf_cfg buf_cfg;
+ struct xen_front_pgdir_shbuf_cfg buf_cfg;
unsigned long flags;
int ret;
@@ -181,29 +171,31 @@
if (unlikely(!evtchnl))
return -EIO;
+ dbuf = kzalloc(sizeof(*dbuf), GFP_KERNEL);
+ if (!dbuf)
+ return -ENOMEM;
+
+ dbuf_add_to_list(front_info, dbuf, dbuf_cookie);
+
memset(&buf_cfg, 0, sizeof(buf_cfg));
buf_cfg.xb_dev = front_info->xb_dev;
+ buf_cfg.num_pages = DIV_ROUND_UP(size, PAGE_SIZE);
buf_cfg.pages = pages;
- buf_cfg.size = size;
+ buf_cfg.pgdir = &dbuf->shbuf;
buf_cfg.be_alloc = front_info->cfg.be_alloc;
- shbuf = xen_drm_front_shbuf_alloc(&buf_cfg);
- if (IS_ERR(shbuf))
- return PTR_ERR(shbuf);
-
- ret = dbuf_add_to_list(front_info, shbuf, dbuf_cookie);
- if (ret < 0) {
- xen_drm_front_shbuf_free(shbuf);
- return ret;
- }
+ ret = xen_front_pgdir_shbuf_alloc(&buf_cfg);
+ if (ret < 0)
+ goto fail_shbuf_alloc;
mutex_lock(&evtchnl->u.req.req_io_lock);
spin_lock_irqsave(&front_info->io_lock, flags);
req = be_prepare_req(evtchnl, XENDISPL_OP_DBUF_CREATE);
req->op.dbuf_create.gref_directory =
- xen_drm_front_shbuf_get_dir_start(shbuf);
+ xen_front_pgdir_shbuf_get_dir_start(&dbuf->shbuf);
req->op.dbuf_create.buffer_sz = size;
+ req->op.dbuf_create.data_ofs = offset;
req->op.dbuf_create.dbuf_cookie = dbuf_cookie;
req->op.dbuf_create.width = width;
req->op.dbuf_create.height = height;
@@ -221,7 +213,7 @@
if (ret < 0)
goto fail;
- ret = xen_drm_front_shbuf_map(shbuf);
+ ret = xen_front_pgdir_shbuf_map(&dbuf->shbuf);
if (ret < 0)
goto fail;
@@ -230,6 +222,7 @@
fail:
mutex_unlock(&evtchnl->u.req.req_io_lock);
+fail_shbuf_alloc:
dbuf_free(&front_info->dbuf_list, dbuf_cookie);
return ret;
}
@@ -358,7 +351,6 @@
if (unlikely(conn_idx >= front_info->num_evt_pairs))
return -EINVAL;
- dbuf_flush_fb(&front_info->dbuf_list, fb_cookie);
evtchnl = &front_info->evt_pairs[conn_idx].req;
mutex_lock(&evtchnl->u.req.req_io_lock);
@@ -418,7 +410,7 @@
ret = xen_drm_front_dbuf_create(drm_info->front_info,
xen_drm_front_dbuf_to_cookie(obj),
args->width, args->height, args->bpp,
- args->size,
+ args->size, 0,
xen_drm_front_gem_get_pages(obj));
if (ret)
goto fail_backend;
@@ -429,7 +421,7 @@
goto fail_handle;
/* Drop reference from allocate - handle holds it now */
- drm_gem_object_put_unlocked(obj);
+ drm_gem_object_put(obj);
return 0;
fail_handle:
@@ -437,7 +429,7 @@
xen_drm_front_dbuf_to_cookie(obj));
fail_backend:
/* drop reference from allocate */
- drm_gem_object_put_unlocked(obj);
+ drm_gem_object_put(obj);
fail:
DRM_ERROR("Failed to create dumb buffer: %d\n", ret);
return ret;
@@ -470,9 +462,6 @@
drm_atomic_helper_shutdown(dev);
drm_mode_config_cleanup(dev);
- drm_dev_fini(dev);
- kfree(dev);
-
if (front_info->cfg.be_alloc)
xenbus_switch_state(front_info->xb_dev,
XenbusStateInitialising);
@@ -500,15 +489,12 @@
};
static struct drm_driver xen_drm_driver = {
- .driver_features = DRIVER_GEM | DRIVER_MODESET |
- DRIVER_PRIME | DRIVER_ATOMIC,
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.release = xen_drm_drv_release,
.gem_vm_ops = &xen_drm_drv_vm_ops,
.gem_free_object_unlocked = xen_drm_drv_free_object_unlocked,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
- .gem_prime_import = drm_gem_prime_import,
- .gem_prime_export = drm_gem_prime_export,
.gem_prime_import_sg_table = xen_drm_front_gem_import_sg_table,
.gem_prime_get_sg_table = xen_drm_front_gem_get_sg_table,
.gem_prime_vmap = xen_drm_front_gem_prime_vmap,
@@ -545,7 +531,7 @@
drm_dev = drm_dev_alloc(&xen_drm_driver, dev);
if (IS_ERR(drm_dev)) {
ret = PTR_ERR(drm_dev);
- goto fail;
+ goto fail_dev;
}
drm_info->drm_dev = drm_dev;
@@ -574,8 +560,11 @@
fail_modeset:
drm_kms_helper_poll_fini(drm_dev);
drm_mode_config_cleanup(drm_dev);
-fail:
+ drm_dev_put(drm_dev);
+fail_dev:
kfree(drm_info);
+ front_info->drm_info = NULL;
+fail:
return ret;
}
@@ -597,6 +586,7 @@
drm_kms_helper_poll_fini(dev);
drm_dev_unplug(dev);
+ drm_dev_put(dev);
front_info->drm_info = NULL;
@@ -661,9 +651,7 @@
switch (backend_state) {
case XenbusStateReconfiguring:
- /* fall through */
case XenbusStateReconfigured:
- /* fall through */
case XenbusStateInitialised:
break;
@@ -713,7 +701,6 @@
break;
case XenbusStateUnknown:
- /* fall through */
case XenbusStateClosed:
if (xb_dev->state == XenbusStateClosed)
break;
@@ -730,17 +717,9 @@
struct device *dev = &xb_dev->dev;
int ret;
- /*
- * The device is not spawn from a device tree, so arch_setup_dma_ops
- * is not called, thus leaving the device with dummy DMA ops.
- * This makes the device return error on PRIME buffer import, which
- * is not correct: to fix this call of_dma_configure() with a NULL
- * node to set default DMA ops.
- */
- dev->coherent_dma_mask = DMA_BIT_MASK(32);
- ret = of_dma_configure(dev, NULL, true);
+ ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (ret < 0) {
- DRM_ERROR("Cannot setup DMA ops, ret %d", ret);
+ DRM_ERROR("Cannot setup DMA mask, ret %d", ret);
return ret;
}
--
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