src/hw/usb-hid.c | 121 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 82 insertions(+), 39 deletions(-)
Reworked the change a bit to escalate memory errors allowing
usb.c:configure_usb_device() to free memory during device
initialisation.
Also removed some code duplication.
From f6a653b0fcac0359d598c342ed0a51b05d6ebe16 Mon Sep 17 00:00:00 2001
From: Daniel Khodabakhsh <d.khodabakhsh@gmail.com>
Date: Thu, 7 Nov 2024 10:34:47 -0800
Subject: [PATCH] Support multiple USB HID devices by storing them in a linked
list.
---
src/hw/usb-hid.c | 121 ++++++++++++++++++++++++++++++++---------------
1 file changed, 82 insertions(+), 39 deletions(-)
diff --git a/src/hw/usb-hid.c b/src/hw/usb-hid.c
index dec198ac..2350e121 100644
--- a/src/hw/usb-hid.c
+++ b/src/hw/usb-hid.c
@@ -1,20 +1,54 @@
// Code for handling USB Human Interface Devices (HID).
//
// Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2024 Daniel Khodabakhsh <d.khodabakhsh@gmail.com>
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "biosvar.h" // GET_GLOBAL
#include "config.h" // CONFIG_*
-#include "output.h" // dprintf
+#include "output.h" // dprintf, warn_noalloc
+#include "malloc.h" // malloc_fseg
#include "ps2port.h" // ATKBD_CMD_GETID
+#include "stacks.h" // mutex_lock, mutex_unlock
#include "usb.h" // usb_ctrlrequest
#include "usb-hid.h" // usb_keyboard_setup
#include "util.h" // process_key
-struct usb_pipe *keyboard_pipe VARFSEG;
-struct usb_pipe *mouse_pipe VARFSEG;
+struct pipe_node {
+ struct usb_pipe *pipe;
+ struct pipe_node *next;
+};
+
+struct mutex_s usb_hid_lock;
+
+struct pipe_node *keyboard_pipe_node VARFSEG = NULL;
+struct pipe_node *mouse_pipe_node VARFSEG = NULL;
+static int
+add_pipe_node(struct pipe_node **root_node
+ , struct usbdevice_s *usbdev
+ , struct usb_endpoint_descriptor *epdesc)
+{
+ struct usb_pipe *pipe = usb_alloc_pipe(usbdev, epdesc);
+ if (!pipe)
+ return -1;
+
+ struct pipe_node *new_root_node = malloc_fseg(sizeof(struct pipe_node));
+ if (!new_root_node) {
+ warn_noalloc();
+ return -1;
+ }
+
+ new_root_node->pipe = pipe;
+
+ mutex_lock(&usb_hid_lock);
+ new_root_node->next = *root_node;
+ *root_node = new_root_node;
+ mutex_unlock(&usb_hid_lock);
+
+ return 0;
+}
/****************************************************************
* Setup
@@ -64,9 +98,6 @@ usb_kbd_setup(struct usbdevice_s *usbdev
{
if (! CONFIG_USB_KEYBOARD)
return -1;
- if (keyboard_pipe)
- // XXX - this enables the first found keyboard (could be random)
- return -1;
if (epdesc->wMaxPacketSize < sizeof(struct keyevent)
|| epdesc->wMaxPacketSize > MAX_KBD_EVENT) {
@@ -76,19 +107,16 @@ usb_kbd_setup(struct usbdevice_s *usbdev
}
// Enable "boot" protocol.
- int ret = set_protocol(usbdev->defpipe, 0,
usbdev->iface->bInterfaceNumber);
- if (ret) {
+ if (set_protocol(usbdev->defpipe, 0, usbdev->iface->bInterfaceNumber)) {
dprintf(3, "Failed to set boot protocol\n");
return -1;
}
// Periodically send reports to enable key repeat.
- ret = set_idle(usbdev->defpipe, KEYREPEATMS);
- if (ret)
+ if (set_idle(usbdev->defpipe, KEYREPEATMS))
dprintf(3, "Warning: Failed to set key repeat rate\n");
- keyboard_pipe = usb_alloc_pipe(usbdev, epdesc);
- if (!keyboard_pipe)
+ if (add_pipe_node(&keyboard_pipe_node, usbdev, epdesc))
return -1;
dprintf(1, "USB keyboard initialized\n");
@@ -109,9 +137,6 @@ usb_mouse_setup(struct usbdevice_s *usbdev
{
if (! CONFIG_USB_MOUSE)
return -1;
- if (mouse_pipe)
- // XXX - this enables the first found mouse (could be random)
- return -1;
if (epdesc->wMaxPacketSize < sizeof(struct mouseevent)
|| epdesc->wMaxPacketSize > MAX_MOUSE_EVENT) {
@@ -121,12 +146,10 @@ usb_mouse_setup(struct usbdevice_s *usbdev
}
// Enable "boot" protocol.
- int ret = set_protocol(usbdev->defpipe, 0,
usbdev->iface->bInterfaceNumber);
- if (ret)
+ if (set_protocol(usbdev->defpipe, 0, usbdev->iface->bInterfaceNumber))
return -1;
- mouse_pipe = usb_alloc_pipe(usbdev, epdesc);
- if (!mouse_pipe)
+ if (add_pipe_node(&mouse_pipe_node, usbdev, epdesc))
return -1;
dprintf(1, "USB mouse initialized\n");
@@ -325,16 +348,20 @@ usb_check_key(void)
{
if (! CONFIG_USB_KEYBOARD)
return;
- struct usb_pipe *pipe = GET_GLOBAL(keyboard_pipe);
- if (!pipe)
- return;
- for (;;) {
- u8 data[MAX_KBD_EVENT];
- int ret = usb_poll_intr(pipe, data);
- if (ret)
- break;
- handle_key((void*)data);
+ for (struct pipe_node *node = GET_GLOBAL(keyboard_pipe_node);
node; node = GET_GLOBALFLAT(node->next)) {
+ struct usb_pipe *pipe = GET_GLOBALFLAT(node->pipe);
+
+ if (!pipe)
+ continue;
+
+ for (;;) {
+ u8 data[MAX_KBD_EVENT];
+ int ret = usb_poll_intr(pipe, data);
+ if (ret)
+ break;
+ handle_key((void*)data);
+ }
}
}
@@ -344,7 +371,13 @@ usb_kbd_active(void)
{
if (! CONFIG_USB_KEYBOARD)
return 0;
- return GET_GLOBAL(keyboard_pipe) != NULL;
+
+ for (struct pipe_node *node = GET_GLOBAL(keyboard_pipe_node);
node; node = GET_GLOBALFLAT(node->next)) {
+ if (GET_GLOBALFLAT(node->pipe))
+ return 1;
+ }
+
+ return 0;
}
// Handle a ps2 style keyboard command.
@@ -390,16 +423,20 @@ usb_check_mouse(void)
{
if (! CONFIG_USB_MOUSE)
return;
- struct usb_pipe *pipe = GET_GLOBAL(mouse_pipe);
- if (!pipe)
- return;
- for (;;) {
- u8 data[MAX_MOUSE_EVENT];
- int ret = usb_poll_intr(pipe, data);
- if (ret)
- break;
- handle_mouse((void*)data);
+ for (struct pipe_node *node = GET_GLOBAL(mouse_pipe_node); node;
node = GET_GLOBALFLAT(node->next)) {
+ struct usb_pipe *pipe = GET_GLOBALFLAT(node->pipe);
+
+ if (!pipe)
+ continue;
+
+ for (;;) {
+ u8 data[MAX_MOUSE_EVENT];
+ int ret = usb_poll_intr(pipe, data);
+ if (ret)
+ break;
+ handle_mouse((void*)data);
+ }
}
}
@@ -409,7 +446,13 @@ usb_mouse_active(void)
{
if (! CONFIG_USB_MOUSE)
return 0;
- return GET_GLOBAL(mouse_pipe) != NULL;
+
+ for (struct pipe_node *node = GET_GLOBAL(mouse_pipe_node); node;
node = GET_GLOBALFLAT(node->next)) {
+ if (GET_GLOBALFLAT(node->pipe))
+ return 1;
+ }
+
+ return 0;
}
// Handle a ps2 style mouse command.
--
2.46.0
On Sun, Oct 27, 2024 at 8:53 AM Daniel Khodabakhsh
<d.khodabakhsh@gmail.com> wrote:
>
> From 354935deae7cb79ee9a400222ed950314694194a Mon Sep 17 00:00:00 2001
> From: Daniel Khodabakhsh <d.khodabakhsh@gmail.com>
> Date: Sat, 26 Oct 2024 04:18:49 -0700
> Subject: [PATCH] Support multiple USB HID devices by storing them in a linked
> list.
>
> ---
> src/hw/usb-hid.c | 108 +++++++++++++++++++++++++++++++++--------------
> 1 file changed, 77 insertions(+), 31 deletions(-)
>
> diff --git a/src/hw/usb-hid.c b/src/hw/usb-hid.c
> index dec198ac..b7d5533e 100644
> --- a/src/hw/usb-hid.c
> +++ b/src/hw/usb-hid.c
> @@ -1,20 +1,44 @@
> // Code for handling USB Human Interface Devices (HID).
> //
> // Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net>
> +// Copyright (C) 2024 Daniel Khodabakhsh <d.khodabakhsh@gmail.com>
> //
> // This file may be distributed under the terms of the GNU LGPLv3 license.
>
> #include "biosvar.h" // GET_GLOBAL
> #include "config.h" // CONFIG_*
> -#include "output.h" // dprintf
> +#include "output.h" // dprintf, warn_noalloc
> +#include "malloc.h" // malloc_fseg
> #include "ps2port.h" // ATKBD_CMD_GETID
> +#include "stacks.h" // mutex_lock, mutex_unlock
> #include "usb.h" // usb_ctrlrequest
> #include "usb-hid.h" // usb_keyboard_setup
> #include "util.h" // process_key
>
> -struct usb_pipe *keyboard_pipe VARFSEG;
> -struct usb_pipe *mouse_pipe VARFSEG;
> +struct pipe_node {
> + struct usb_pipe *pipe;
> + struct pipe_node *next;
> +};
> +
> +struct mutex_s usb_hid_lock;
> +
> +struct pipe_node *keyboard_pipe_node VARFSEG = NULL;
> +struct pipe_node *mouse_pipe_node VARFSEG = NULL;
>
> +static struct pipe_node*
> +add_pipe_node(struct pipe_node *old_root_node, struct usb_pipe *pipe)
> +{
> + struct pipe_node *new_root_node = malloc_fseg(sizeof(struct pipe_node));
> + if (!new_root_node) {
> + warn_noalloc();
> + return old_root_node;
> + }
> +
> + new_root_node->pipe = pipe;
> + new_root_node->next = old_root_node;
> +
> + return new_root_node;
> +}
>
> /****************************************************************
> * Setup
> @@ -64,9 +88,6 @@ usb_kbd_setup(struct usbdevice_s *usbdev
> {
> if (! CONFIG_USB_KEYBOARD)
> return -1;
> - if (keyboard_pipe)
> - // XXX - this enables the first found keyboard (could be random)
> - return -1;
>
> if (epdesc->wMaxPacketSize < sizeof(struct keyevent)
> || epdesc->wMaxPacketSize > MAX_KBD_EVENT) {
> @@ -87,10 +108,14 @@ usb_kbd_setup(struct usbdevice_s *usbdev
> if (ret)
> dprintf(3, "Warning: Failed to set key repeat rate\n");
>
> - keyboard_pipe = usb_alloc_pipe(usbdev, epdesc);
> + struct usb_pipe *keyboard_pipe = usb_alloc_pipe(usbdev, epdesc);
> if (!keyboard_pipe)
> return -1;
>
> + mutex_lock(&usb_hid_lock);
> + keyboard_pipe_node = add_pipe_node(keyboard_pipe_node, keyboard_pipe);
> + mutex_unlock(&usb_hid_lock);
> +
> dprintf(1, "USB keyboard initialized\n");
> return 0;
> }
> @@ -109,9 +134,6 @@ usb_mouse_setup(struct usbdevice_s *usbdev
> {
> if (! CONFIG_USB_MOUSE)
> return -1;
> - if (mouse_pipe)
> - // XXX - this enables the first found mouse (could be random)
> - return -1;
>
> if (epdesc->wMaxPacketSize < sizeof(struct mouseevent)
> || epdesc->wMaxPacketSize > MAX_MOUSE_EVENT) {
> @@ -125,10 +147,14 @@ usb_mouse_setup(struct usbdevice_s *usbdev
> if (ret)
> return -1;
>
> - mouse_pipe = usb_alloc_pipe(usbdev, epdesc);
> + struct usb_pipe *mouse_pipe = usb_alloc_pipe(usbdev, epdesc);
> if (!mouse_pipe)
> return -1;
>
> + mutex_lock(&usb_hid_lock);
> + mouse_pipe_node = add_pipe_node(mouse_pipe_node, mouse_pipe);
> + mutex_unlock(&usb_hid_lock);
> +
> dprintf(1, "USB mouse initialized\n");
> return 0;
> }
> @@ -325,16 +351,20 @@ usb_check_key(void)
> {
> if (! CONFIG_USB_KEYBOARD)
> return;
> - struct usb_pipe *pipe = GET_GLOBAL(keyboard_pipe);
> - if (!pipe)
> - return;
>
> - for (;;) {
> - u8 data[MAX_KBD_EVENT];
> - int ret = usb_poll_intr(pipe, data);
> - if (ret)
> - break;
> - handle_key((void*)data);
> + for (struct pipe_node *node = GET_GLOBAL(keyboard_pipe_node);
> node; node = GET_GLOBALFLAT(node->next)) {
> + struct usb_pipe *pipe = GET_GLOBALFLAT(node->pipe);
> +
> + if (!pipe)
> + continue;
> +
> + for (;;) {
> + u8 data[MAX_KBD_EVENT];
> + int ret = usb_poll_intr(pipe, data);
> + if (ret)
> + break;
> + handle_key((void*)data);
> + }
> }
> }
>
> @@ -344,7 +374,13 @@ usb_kbd_active(void)
> {
> if (! CONFIG_USB_KEYBOARD)
> return 0;
> - return GET_GLOBAL(keyboard_pipe) != NULL;
> +
> + for (struct pipe_node *node = GET_GLOBAL(keyboard_pipe_node);
> node; node = GET_GLOBALFLAT(node->next)) {
> + if (GET_GLOBALFLAT(node->pipe))
> + return 1;
> + }
> +
> + return 0;
> }
>
> // Handle a ps2 style keyboard command.
> @@ -390,16 +426,20 @@ usb_check_mouse(void)
> {
> if (! CONFIG_USB_MOUSE)
> return;
> - struct usb_pipe *pipe = GET_GLOBAL(mouse_pipe);
> - if (!pipe)
> - return;
>
> - for (;;) {
> - u8 data[MAX_MOUSE_EVENT];
> - int ret = usb_poll_intr(pipe, data);
> - if (ret)
> - break;
> - handle_mouse((void*)data);
> + for (struct pipe_node *node = GET_GLOBAL(mouse_pipe_node); node;
> node = GET_GLOBALFLAT(node->next)) {
> + struct usb_pipe *pipe = GET_GLOBALFLAT(node->pipe);
> +
> + if (!pipe)
> + continue;
> +
> + for (;;) {
> + u8 data[MAX_MOUSE_EVENT];
> + int ret = usb_poll_intr(pipe, data);
> + if (ret)
> + break;
> + handle_mouse((void*)data);
> + }
> }
> }
>
> @@ -409,7 +449,13 @@ usb_mouse_active(void)
> {
> if (! CONFIG_USB_MOUSE)
> return 0;
> - return GET_GLOBAL(mouse_pipe) != NULL;
> +
> + for (struct pipe_node *node = GET_GLOBAL(mouse_pipe_node); node;
> node = GET_GLOBALFLAT(node->next)) {
> + if (GET_GLOBALFLAT(node->pipe))
> + return 1;
> + }
> +
> + return 0;
> }
>
> // Handle a ps2 style mouse command.
> --
> 2.46.0
>
>
> On Sun, Oct 27, 2024 at 1:46 AM Daniel Khodabakhsh
> <d.khodabakhsh@gmail.com> wrote:
> >
> > This change allows the use of multiple USB HID keyboards and mice.
> > It's similar to the change by Stef van Os from this thread:
> >
> > https://mail.coreboot.org/hyperkitty/list/seabios@seabios.org/thread/O6Y4LUKPFZLNBBJUGKB6MUHG4LPCP3KB/
> >
> > however this new change uses the linked list approach instead of a fixed array.
> >
> > Tested on QEMU and an Asus KGPE-D16 with 2 keyboards and one mice
From f6a653b0fcac0359d598c342ed0a51b05d6ebe16 Mon Sep 17 00:00:00 2001
From: Daniel Khodabakhsh <d.khodabakhsh@gmail.com>
Date: Thu, 7 Nov 2024 10:34:47 -0800
Subject: [PATCH] Support multiple USB HID devices by storing them in a linked
list.
---
src/hw/usb-hid.c | 121 ++++++++++++++++++++++++++++++++---------------
1 file changed, 82 insertions(+), 39 deletions(-)
diff --git a/src/hw/usb-hid.c b/src/hw/usb-hid.c
index dec198ac..2350e121 100644
--- a/src/hw/usb-hid.c
+++ b/src/hw/usb-hid.c
@@ -1,20 +1,54 @@
// Code for handling USB Human Interface Devices (HID).
//
// Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net>
+// Copyright (C) 2024 Daniel Khodabakhsh <d.khodabakhsh@gmail.com>
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
#include "biosvar.h" // GET_GLOBAL
#include "config.h" // CONFIG_*
-#include "output.h" // dprintf
+#include "output.h" // dprintf, warn_noalloc
+#include "malloc.h" // malloc_fseg
#include "ps2port.h" // ATKBD_CMD_GETID
+#include "stacks.h" // mutex_lock, mutex_unlock
#include "usb.h" // usb_ctrlrequest
#include "usb-hid.h" // usb_keyboard_setup
#include "util.h" // process_key
-struct usb_pipe *keyboard_pipe VARFSEG;
-struct usb_pipe *mouse_pipe VARFSEG;
+struct pipe_node {
+ struct usb_pipe *pipe;
+ struct pipe_node *next;
+};
+
+struct mutex_s usb_hid_lock;
+
+struct pipe_node *keyboard_pipe_node VARFSEG = NULL;
+struct pipe_node *mouse_pipe_node VARFSEG = NULL;
+static int
+add_pipe_node(struct pipe_node **root_node
+ , struct usbdevice_s *usbdev
+ , struct usb_endpoint_descriptor *epdesc)
+{
+ struct usb_pipe *pipe = usb_alloc_pipe(usbdev, epdesc);
+ if (!pipe)
+ return -1;
+
+ struct pipe_node *new_root_node = malloc_fseg(sizeof(struct pipe_node));
+ if (!new_root_node) {
+ warn_noalloc();
+ return -1;
+ }
+
+ new_root_node->pipe = pipe;
+
+ mutex_lock(&usb_hid_lock);
+ new_root_node->next = *root_node;
+ *root_node = new_root_node;
+ mutex_unlock(&usb_hid_lock);
+
+ return 0;
+}
/****************************************************************
* Setup
@@ -64,9 +98,6 @@ usb_kbd_setup(struct usbdevice_s *usbdev
{
if (! CONFIG_USB_KEYBOARD)
return -1;
- if (keyboard_pipe)
- // XXX - this enables the first found keyboard (could be random)
- return -1;
if (epdesc->wMaxPacketSize < sizeof(struct keyevent)
|| epdesc->wMaxPacketSize > MAX_KBD_EVENT) {
@@ -76,19 +107,16 @@ usb_kbd_setup(struct usbdevice_s *usbdev
}
// Enable "boot" protocol.
- int ret = set_protocol(usbdev->defpipe, 0, usbdev->iface->bInterfaceNumber);
- if (ret) {
+ if (set_protocol(usbdev->defpipe, 0, usbdev->iface->bInterfaceNumber)) {
dprintf(3, "Failed to set boot protocol\n");
return -1;
}
// Periodically send reports to enable key repeat.
- ret = set_idle(usbdev->defpipe, KEYREPEATMS);
- if (ret)
+ if (set_idle(usbdev->defpipe, KEYREPEATMS))
dprintf(3, "Warning: Failed to set key repeat rate\n");
- keyboard_pipe = usb_alloc_pipe(usbdev, epdesc);
- if (!keyboard_pipe)
+ if (add_pipe_node(&keyboard_pipe_node, usbdev, epdesc))
return -1;
dprintf(1, "USB keyboard initialized\n");
@@ -109,9 +137,6 @@ usb_mouse_setup(struct usbdevice_s *usbdev
{
if (! CONFIG_USB_MOUSE)
return -1;
- if (mouse_pipe)
- // XXX - this enables the first found mouse (could be random)
- return -1;
if (epdesc->wMaxPacketSize < sizeof(struct mouseevent)
|| epdesc->wMaxPacketSize > MAX_MOUSE_EVENT) {
@@ -121,12 +146,10 @@ usb_mouse_setup(struct usbdevice_s *usbdev
}
// Enable "boot" protocol.
- int ret = set_protocol(usbdev->defpipe, 0, usbdev->iface->bInterfaceNumber);
- if (ret)
+ if (set_protocol(usbdev->defpipe, 0, usbdev->iface->bInterfaceNumber))
return -1;
- mouse_pipe = usb_alloc_pipe(usbdev, epdesc);
- if (!mouse_pipe)
+ if (add_pipe_node(&mouse_pipe_node, usbdev, epdesc))
return -1;
dprintf(1, "USB mouse initialized\n");
@@ -325,16 +348,20 @@ usb_check_key(void)
{
if (! CONFIG_USB_KEYBOARD)
return;
- struct usb_pipe *pipe = GET_GLOBAL(keyboard_pipe);
- if (!pipe)
- return;
- for (;;) {
- u8 data[MAX_KBD_EVENT];
- int ret = usb_poll_intr(pipe, data);
- if (ret)
- break;
- handle_key((void*)data);
+ for (struct pipe_node *node = GET_GLOBAL(keyboard_pipe_node); node; node = GET_GLOBALFLAT(node->next)) {
+ struct usb_pipe *pipe = GET_GLOBALFLAT(node->pipe);
+
+ if (!pipe)
+ continue;
+
+ for (;;) {
+ u8 data[MAX_KBD_EVENT];
+ int ret = usb_poll_intr(pipe, data);
+ if (ret)
+ break;
+ handle_key((void*)data);
+ }
}
}
@@ -344,7 +371,13 @@ usb_kbd_active(void)
{
if (! CONFIG_USB_KEYBOARD)
return 0;
- return GET_GLOBAL(keyboard_pipe) != NULL;
+
+ for (struct pipe_node *node = GET_GLOBAL(keyboard_pipe_node); node; node = GET_GLOBALFLAT(node->next)) {
+ if (GET_GLOBALFLAT(node->pipe))
+ return 1;
+ }
+
+ return 0;
}
// Handle a ps2 style keyboard command.
@@ -390,16 +423,20 @@ usb_check_mouse(void)
{
if (! CONFIG_USB_MOUSE)
return;
- struct usb_pipe *pipe = GET_GLOBAL(mouse_pipe);
- if (!pipe)
- return;
- for (;;) {
- u8 data[MAX_MOUSE_EVENT];
- int ret = usb_poll_intr(pipe, data);
- if (ret)
- break;
- handle_mouse((void*)data);
+ for (struct pipe_node *node = GET_GLOBAL(mouse_pipe_node); node; node = GET_GLOBALFLAT(node->next)) {
+ struct usb_pipe *pipe = GET_GLOBALFLAT(node->pipe);
+
+ if (!pipe)
+ continue;
+
+ for (;;) {
+ u8 data[MAX_MOUSE_EVENT];
+ int ret = usb_poll_intr(pipe, data);
+ if (ret)
+ break;
+ handle_mouse((void*)data);
+ }
}
}
@@ -409,7 +446,13 @@ usb_mouse_active(void)
{
if (! CONFIG_USB_MOUSE)
return 0;
- return GET_GLOBAL(mouse_pipe) != NULL;
+
+ for (struct pipe_node *node = GET_GLOBAL(mouse_pipe_node); node; node = GET_GLOBALFLAT(node->next)) {
+ if (GET_GLOBALFLAT(node->pipe))
+ return 1;
+ }
+
+ return 0;
}
// Handle a ps2 style mouse command.
--
2.46.0
_______________________________________________
SeaBIOS mailing list -- seabios@seabios.org
To unsubscribe send an email to seabios-leave@seabios.org
Hi,
> +struct pipe_node {
> + struct usb_pipe *pipe;
> + struct pipe_node *next;
> +};
seabios has a linked list implementation (see src/list.h).
Please use that instead of rolling your own.
Otherwise the patch looks sane on a quick glance.
take care,
Gerd
_______________________________________________
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Hi Gerd, Thanks for the reviews! > > seabios has a linked list implementation (see src/list.h). > Please use that instead of rolling your own. > > Otherwise the patch looks sane on a quick glance. > Thanks for this suggestion as well. I tried it out but I'm having trouble getting it to work. My SeaBIOS hangs after the splash screen. I believe it's due to how the hlist_for_each_entry macro retrieves the node container via the inner macro call to container_of. Since the containers are in FSEG (so they can be used during runtime) I believe they need to be retrieved with GET_GLOBAL (like I do in the previous patches' for loops). I attached the hlist version as 0001-Use-hlists-to-track-USB-HID-devices.patch Is it necessary to use hlist? Linked lists are simple enough and I'm not using the double-linked list nature of hlist. I made a few more tweaks to the original linked list approach as 0001-Support-multiple-USB-HID-devices-3.patch Cheers, - Daniel K. _______________________________________________ SeaBIOS mailing list -- seabios@seabios.org To unsubscribe send an email to seabios-leave@seabios.org
On Wed, Nov 13, 2024 at 11:14:28AM +0000, Daniel Khodabakhsh wrote: > Hi Gerd, > > Thanks for the reviews! > > > > > seabios has a linked list implementation (see src/list.h). > > Please use that instead of rolling your own. > > > > Otherwise the patch looks sane on a quick glance. > > > > Thanks for this suggestion as well. I tried it out but I'm having > trouble getting it to work. My SeaBIOS hangs after the splash screen. > I believe it's due to how the hlist_for_each_entry macro retrieves the > node container via the inner macro call to container_of. Since the > containers are in FSEG (so they can be used during runtime) I believe > they need to be retrieved with GET_GLOBAL (like I do in the previous > patches' for loops). I attached the hlist version as > 0001-Use-hlists-to-track-USB-HID-devices.patch > > Is it necessary to use hlist? Linked lists are simple enough and I'm > not using the double-linked list nature of hlist. Given that there isn't much list management to do here (the patch never removes anything from the lists) I'd say it's ok to an exception in this case. Kevin? take care, Gerd _______________________________________________ SeaBIOS mailing list -- seabios@seabios.org To unsubscribe send an email to seabios-leave@seabios.org
On Thu, Nov 14, 2024 at 02:54:38PM +0100, Gerd Hoffmann wrote: > On Wed, Nov 13, 2024 at 11:14:28AM +0000, Daniel Khodabakhsh wrote: > > Hi Gerd, > > > > Thanks for the reviews! > > > > > > > > seabios has a linked list implementation (see src/list.h). > > > Please use that instead of rolling your own. > > > > > > Otherwise the patch looks sane on a quick glance. > > > > > > > Thanks for this suggestion as well. I tried it out but I'm having > > trouble getting it to work. My SeaBIOS hangs after the splash screen. > > I believe it's due to how the hlist_for_each_entry macro retrieves the > > node container via the inner macro call to container_of. Since the > > containers are in FSEG (so they can be used during runtime) I believe > > they need to be retrieved with GET_GLOBAL (like I do in the previous > > patches' for loops). I attached the hlist version as > > 0001-Use-hlists-to-track-USB-HID-devices.patch > > > > Is it necessary to use hlist? Linked lists are simple enough and I'm > > not using the double-linked list nature of hlist. > > Given that there isn't much list management to do here (the patch never > removes anything from the lists) I'd say it's ok to an exception in > this case. > > Kevin? Yeah - probably best to "open code" linked lists if they are needed in 16bit mode. Cheers, -Kevin _______________________________________________ SeaBIOS mailing list -- seabios@seabios.org To unsubscribe send an email to seabios-leave@seabios.org
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