Module: wine Branch: master Commit: c9003fab66dbe5311c81ab9198612d746f28f013 URL: https://source.winehq.org/git/wine.git/?a=commit;h=c9003fab66dbe5311c81ab919...
Author: Rémi Bernon rbernon@codeweavers.com Date: Fri Oct 8 10:01:25 2021 +0200
winebus.sys: Queue HID reports instead of overwritting the last one.
If the hidclass.sys read requests aren't done fast enough.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=51824 Signed-off-by: Rémi Bernon rbernon@codeweavers.com Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/winebus.sys/main.c | 100 ++++++++++++++++++------------------------------ 1 file changed, 38 insertions(+), 62 deletions(-)
diff --git a/dlls/winebus.sys/main.c b/dlls/winebus.sys/main.c index 57a751655cc..16192977bef 100644 --- a/dlls/winebus.sys/main.c +++ b/dlls/winebus.sys/main.c @@ -54,6 +54,13 @@ static DEVICE_OBJECT *bus_fdo;
static HANDLE driver_key;
+struct hid_report +{ + struct list entry; + ULONG length; + BYTE buffer[1]; +}; + enum device_state { DEVICE_STATE_STOPPED, @@ -77,10 +84,7 @@ struct device_extension HIDP_DEVICE_DESC collection_desc;
BYTE *last_reports[256]; - BYTE *last_report; - DWORD last_report_size; - BOOL last_report_read; - DWORD buffer_size; + struct list reports; IRP *pending_read;
struct unix_device *unix_device; @@ -307,11 +311,8 @@ static DEVICE_OBJECT *bus_create_hid_device(struct device_desc *desc, struct uni ext->device = device; ext->desc = *desc; ext->index = get_device_index(desc); - ext->last_report = NULL; - ext->last_report_size = 0; - ext->last_report_read = TRUE; - ext->buffer_size = 0; ext->unix_device = unix_device; + list_init(&ext->reports);
InitializeCriticalSection(&ext->cs); ext->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": cs"); @@ -397,63 +398,43 @@ static DWORD check_bus_option(const WCHAR *option, DWORD default_value) return default_value; }
-static NTSTATUS deliver_last_report(struct device_extension *ext, DWORD buffer_length, BYTE* buffer, ULONG_PTR *out_length) +static BOOL deliver_next_report(struct device_extension *ext, IRP *irp) { - if (buffer_length < ext->last_report_size) - { - *out_length = 0; - return STATUS_BUFFER_TOO_SMALL; - } - else - { - if (ext->last_report) - memcpy(buffer, ext->last_report, ext->last_report_size); - *out_length = ext->last_report_size; - return STATUS_SUCCESS; - } + struct hid_report *report; + struct list *entry; + + if (!(entry = list_head(&ext->reports))) return FALSE; + report = LIST_ENTRY(entry, struct hid_report, entry); + list_remove(&report->entry); + + memcpy(irp->UserBuffer, report->buffer, report->length); + irp->IoStatus.Information = report->length; + irp->IoStatus.Status = STATUS_SUCCESS; + + RtlFreeHeap(GetProcessHeap(), 0, report); + return TRUE; }
-static void process_hid_report(DEVICE_OBJECT *device, BYTE *report, DWORD length) +static void process_hid_report(DEVICE_OBJECT *device, BYTE *report_buf, DWORD report_len) { struct device_extension *ext = (struct device_extension *)device->DeviceExtension; - IO_STACK_LOCATION *stack; - ULONG buffer_len; + ULONG size = offsetof(struct hid_report, buffer[report_len]); + struct hid_report *report; IRP *irp;
- if (!length || !report) - return; + if (!(report = RtlAllocateHeap(GetProcessHeap(), 0, size))) return; + memcpy(report->buffer, report_buf, report_len); + report->length = report_len;
RtlEnterCriticalSection(&ext->cs); - if (length > ext->buffer_size) - { - RtlFreeHeap(GetProcessHeap(), 0, ext->last_report); - ext->last_report = RtlAllocateHeap(GetProcessHeap(), 0, length); - if (!ext->last_report) - { - ERR_(hid_report)("Failed to alloc last report\n"); - ext->buffer_size = 0; - ext->last_report_size = 0; - ext->last_report_read = TRUE; - RtlLeaveCriticalSection(&ext->cs); - return; - } - else - ext->buffer_size = length; - } - - memcpy(ext->last_report, report, length); - ext->last_report_size = length; - ext->last_report_read = FALSE; + list_add_tail(&ext->reports, &report->entry);
- if (!ext->collection_desc.ReportIDs[0].ReportID) memcpy(ext->last_reports[0], report, length); - else memcpy(ext->last_reports[report[0]], report, length); + if (!ext->collection_desc.ReportIDs[0].ReportID) memcpy(ext->last_reports[0], report_buf, report_len); + else memcpy(ext->last_reports[report_buf[0]], report_buf, report_len);
if ((irp = pop_pending_read(ext))) { - stack = IoGetCurrentIrpStackLocation(irp); - buffer_len = stack->Parameters.DeviceIoControl.OutputBufferLength; - irp->IoStatus.Status = deliver_last_report(ext, buffer_len, irp->UserBuffer, &irp->IoStatus.Information); - ext->last_report_read = TRUE; + deliver_next_report(ext, irp); IoCompleteRequest(irp, IO_NO_INCREMENT); } RtlLeaveCriticalSection(&ext->cs); @@ -819,6 +800,7 @@ static NTSTATUS pdo_pnp_dispatch(DEVICE_OBJECT *device, IRP *irp) struct device_extension *ext = device->DeviceExtension; NTSTATUS status = irp->IoStatus.Status; IO_STACK_LOCATION *irpsp = IoGetCurrentIrpStackLocation(irp); + struct hid_report *report, *next; HIDP_REPORT_IDS *reports; ULONG i, size;
@@ -885,11 +867,12 @@ static NTSTATUS pdo_pnp_dispatch(DEVICE_OBJECT *device, IRP *irp) ext->cs.DebugInfo->Spare[0] = 0; DeleteCriticalSection(&ext->cs);
- RtlFreeHeap(GetProcessHeap(), 0, ext->last_report); - irp->IoStatus.Status = STATUS_SUCCESS; IoCompleteRequest(irp, IO_NO_INCREMENT);
+ LIST_FOR_EACH_ENTRY_SAFE(report, next, &ext->reports, struct hid_report, entry) + RtlFreeHeap(GetProcessHeap(), 0, report); + reports = ext->collection_desc.ReportIDs; for (i = 0; i < ext->collection_desc.ReportIDsLength; ++i) { @@ -1046,14 +1029,7 @@ static NTSTATUS WINAPI hid_internal_dispatch(DEVICE_OBJECT *device, IRP *irp) } case IOCTL_HID_READ_REPORT: { - TRACE_(hid_report)("IOCTL_HID_READ_REPORT\n"); - if (!ext->last_report_read) - { - irp->IoStatus.Status = deliver_last_report(ext, - buffer_len, irp->UserBuffer, &irp->IoStatus.Information); - ext->last_report_read = TRUE; - } - else + if (!deliver_next_report(ext, irp)) { /* hidclass.sys should guarantee this */ assert(!ext->pending_read);