Hi,
I'm sending firmware to usb device with this code:
But it`s falling because the request firmware call didn't put my
firmware in a DMA capable area. That's my guess.
So how to request firmware in DMA capable area?
Thanks
Lucas
[ 30.330081] ------------[ cut here ]------------
[ 30.334782] WARNING: CPU: 1 PID: 557 at
/media/workspace/linux/drivers/usb/core/hcd.c:1586
usb_hcd_map_urb_for_dma+0x4f4/0x634
[ 30.346362] transfer buffer not dma capable
[ 30.350623] Modules linked in: usb_bridge_boot(+) bnep hci_uart btbcm
serdev bluetooth ecdh_generic 8021q garp stp llc bcm2835_codec(C)
brcmfmac vc4 brcmutil v4l6
[ 30.406130] CPU: 1 PID: 557 Comm: systemd-udevd Tainted: G
C 4.19.108-v7l+ #1
[ 30.414691] Hardware name: BCM2835
[ 30.418148] [<c0212c6c>] (unwind_backtrace) from [<c020d490>]
(show_stack+0x20/0x24)
[ 30.426009] [<c020d490>] (show_stack) from [<c09c1ac0>]
(dump_stack+0xd8/0x11c)
[ 30.433428] [<c09c1ac0>] (dump_stack) from [<c0222138>]
(__warn+0xf0/0x108)
[ 30.440492] [<c0222138>] (__warn) from [<c02221a8>]
(warn_slowpath_fmt+0x58/0x74)
[ 30.448087] [<c02221a8>] (warn_slowpath_fmt) from [<c079df38>]
(usb_hcd_map_urb_for_dma+0x4f4/0x634)
[ 30.457357] [<c079df38>] (usb_hcd_map_urb_for_dma) from [<c079e518>]
(usb_hcd_submit_urb+0x4a0/0x968)
[ 30.466714] [<c079e518>] (usb_hcd_submit_urb) from [<c079fbfc>]
(usb_submit_urb+0x354/0x504)
[ 30.475277] [<c079fbfc>] (usb_submit_urb) from [<c07a0430>]
(usb_start_wait_urb+0x6c/0xf0)
[ 30.483663] [<c07a0430>] (usb_start_wait_urb) from [<c07a0588>]
(usb_control_msg+0xd4/0x12c)
[ 30.492232] [<c07a0588>] (usb_control_msg) from [<bf984270>]
(clbrd_probe+0x240/0x43c [usb_bridge_boot])
[ 30.502135] [<bf984270>] (clbrd_probe [usb_bridge_boot]) from
[<c07a4f64>] (usb_probe_interface+0xec/0x278)
[ 30.512287] [<c07a4f64>] (usb_probe_interface) from [<c071a4d8>]
(really_probe+0x1e8/0x2d0)
[ 30.520762] [<c071a4d8>] (really_probe) from [<c071a794>]
(driver_probe_device+0x70/0x184)
[ 30.529149] [<c071a794>] (driver_probe_device) from [<c071a998>]
(__driver_attach+0xf0/0xf4)
[ 30.537712] [<c071a998>] (__driver_attach) from [<c07183f4>]
(bus_for_each_dev+0x84/0xc4)
[ 30.546011] [<c07183f4>] (bus_for_each_dev) from [<c0719ddc>]
(driver_attach+0x2c/0x30)
[ 30.554133] [<c0719ddc>] (driver_attach) from [<c07197bc>]
(bus_add_driver+0x19c/0x220)
[ 30.562254] [<c07197bc>] (bus_add_driver) from [<c071b184>]
(driver_register+0x84/0x118)
[ 30.570464] [<c071b184>] (driver_register) from [<c07a3d84>]
(usb_register_driver+0x80/0x144)
[ 30.579117] [<c07a3d84>] (usb_register_driver) from [<bf989030>]
(clbrd_driver_init+0x30/0x1000 [usb_bridge_boot])
[ 30.589889] [<bf989030>] (clbrd_driver_init [usb_bridge_boot]) from
[<c0203138>] (do_one_initcall+0x50/0x214)
[ 30.600218] [<c0203138>] (do_one_initcall) from [<c02bdcb8>]
(do_init_module+0x74/0x224)
[ 30.608429] [<c02bdcb8>] (do_init_module) from [<c02bcce8>]
(load_module+0x202c/0x25dc)
[ 30.616552] [<c02bcce8>] (load_module) from [<c02bd4d8>]
(sys_finit_module+0xbc/0xe8)
[ 30.624497] [<c02bd4d8>] (sys_finit_module) from [<c02011a4>]
(__sys_trace_return+0x0/0x1c)
[ 30.632969] Exception stack(0xdafdffa8 to 0xdafdfff0)
[ 30.638091] ffa0: fda1c800 01e30b08 00000006
b6d8f8e0 00000000 b6d903f4
[ 30.646388] ffc0: fda1c800 01e30b08 00000000 0000017b 01e5c418
0057f1dc 01e5d0c8 00000000
[ 30.654684] ffe0: bea80180 bea80170 b6d869d8 b6e76af0
[ 30.659823] ---[ end trace fa96d8b137009b49 ]---
static int fx3_ram_write(struct usb_device *udev, u32 *buf, u32
ramAddress, size_t len)
{
size_t index = 0, size;
int ret;
while(len > 0) {
size = (len > MAX_WRITE_SIZE) ? MAX_WRITE_SIZE : len;
ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0xA0, 0x40,
ramAddress & 0xFFFF, ramAddress >> 16,
&buf[index], size, VENDORCMD_TIMEOUT);
if (ret != size) {
ret = (ret < 0) ? ret : -EIO;
dev_err(&udev->dev, "Error: Vendor write to FX3 RAM failed:
%d\n", ret);
return ret;
}
ramAddress += size;
index += size;
len -= size;
}
return 0;
}
static int clbrd_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct device *dev = &intf->dev;
struct usb_device *udev = interface_to_usbdev(intf);
const struct firmware *firmware;
struct fx3_img *img;
struct fx3_sector *sector;
int ret;
dev_info(&intf->dev, "%s\n", __func__);
ret = request_firmware(&firmware, FW_NAME, dev);
if (ret)
dev_err(dev, "request_firmware failed '%s' = %d (check
files)\n", FW_NAME, ret);
img = (struct fx3_img*)firmware->data;
print_img_header(dev, img);
sector = (struct fx3_sector*)img->sectors;
while ((u8*)sector < firmware->data + firmware->size) {
dev_dbg(&intf->dev, "0x%.4x 0x%.4x\n", sector->dLength ,
sector->dAddress);
if (sector->dLength == 0) {
ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
0xA0, 0x40,
(sector->dAddress & 0xFFFF),
(sector->dAddress >> 16),
NULL, 0, VENDORCMD_TIMEOUT);
if (ret < 0)
dev_err(dev, "Fail to write last sector: %d\n", ret);
break;
}
ret = fx3_ram_write(udev, sector->dData, sector->dAddress,
sector->dLength * 4);
if (ret < 0)
dev_err(dev, "Fail to write sector: %d\n", ret);
sector += sizeof(sector->dLength) + sizeof(sector->dAddress) +
(sector->dLength * 4);
}
release_firmware(firmware);
return ret;
}
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