| Message ID | 20200302155528.19505-5-nsaenzjulienne@suse.de |
|---|---|
| State | New |
| Headers | show |
| Series | Raspberry Pi 4 VL805 firmware load support | expand |
On Mon, Mar 02, 2020 at 04:55:28PM +0100, Nicolas Saenz Julienne wrote: > On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be > loaded directly from an EEPROM or, if not present, by the SoC's > VideCore. Inform VideCore that VL805 was just reset. > > Also, as this creates a dependency between XHCI_PCI and VideoCore's, > reflect that on the firmware interface Kconfg. > > Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> > > --- > > Changes since v1: > - Make RASPBERRYPI_FIRMWARE dependent on this quirk to make sure it > gets compiled when needed. > > drivers/firmware/Kconfig | 1 + > drivers/usb/host/pci-quirks.c | 18 ++++++++++++++++++ > 2 files changed, 19 insertions(+) > > diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig > index ea869addc89b..40a468d712a5 100644 > --- a/drivers/firmware/Kconfig > +++ b/drivers/firmware/Kconfig > @@ -180,6 +180,7 @@ config ISCSI_IBFT > config RASPBERRYPI_FIRMWARE > tristate "Raspberry Pi Firmware Driver" > depends on BCM2835_MBOX > + default XHCI_PCI > help > This option enables support for communicating with the firmware on the > Raspberry Pi. > diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c > index beb2efa71341..aee2eaa3f0e1 100644 > --- a/drivers/usb/host/pci-quirks.c > +++ b/drivers/usb/host/pci-quirks.c > @@ -16,6 +16,9 @@ > #include <linux/export.h> > #include <linux/acpi.h> > #include <linux/dmi.h> > + > +#include <soc/bcm2835/raspberrypi-firmware.h> > + > #include "pci-quirks.h" > #include "xhci-ext-caps.h" > > @@ -1243,11 +1246,26 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) > > static void quirk_usb_early_handoff(struct pci_dev *pdev) > { > + int ret; > + > /* Skip Netlogic mips SoC's internal PCI USB controller. > * This device does not need/support EHCI/OHCI handoff > */ > if (pdev->vendor == 0x184e) /* vendor Netlogic */ > return; > + > + if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) { > + ret = rpi_firmware_init_vl805(pdev); > + if (ret) > + /* > + * Firmware might be outdated, or else, something > + * failed, keep going and hope for the best. > + */ > + dev_warn(&pdev->dev, > + "Failed to load VL805's firmware: %d\n", > + ret); {} please. Also, you might want to provide a better warning, something like: "Failed to load VL805's firmware, will continue to attempt to work, but bad things might happen, you should fix this..." or something to give people a chance to know what to do here. thanks, greg k-h
On Wed, 2020-03-04 at 10:05 +0100, Greg KH wrote: > On Mon, Mar 02, 2020 at 04:55:28PM +0100, Nicolas Saenz Julienne wrote: > > @@ -1243,11 +1246,26 @@ static void quirk_usb_handoff_xhci(struct pci_dev > > *pdev) > > > > static void quirk_usb_early_handoff(struct pci_dev *pdev) > > { > > + int ret; > > + > > /* Skip Netlogic mips SoC's internal PCI USB controller. > > * This device does not need/support EHCI/OHCI handoff > > */ > > if (pdev->vendor == 0x184e) /* vendor Netlogic */ > > return; > > + > > + if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) { > > + ret = rpi_firmware_init_vl805(pdev); > > + if (ret) > > + /* > > + * Firmware might be outdated, or else, something > > + * failed, keep going and hope for the best. > > + */ > > + dev_warn(&pdev->dev, > > + "Failed to load VL805's firmware: %d\n", > > + ret); > > {} please. > > Also, you might want to provide a better warning, something like: > "Failed to load VL805's firmware, will continue to attempt to > work, but bad things might happen, you should fix this..." > > or something to give people a chance to know what to do here. Noted Thanks, Nicolas
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index ea869addc89b..40a468d712a5 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -180,6 +180,7 @@ config ISCSI_IBFT config RASPBERRYPI_FIRMWARE tristate "Raspberry Pi Firmware Driver" depends on BCM2835_MBOX + default XHCI_PCI help This option enables support for communicating with the firmware on the Raspberry Pi. diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index beb2efa71341..aee2eaa3f0e1 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -16,6 +16,9 @@ #include <linux/export.h> #include <linux/acpi.h> #include <linux/dmi.h> + +#include <soc/bcm2835/raspberrypi-firmware.h> + #include "pci-quirks.h" #include "xhci-ext-caps.h" @@ -1243,11 +1246,26 @@ static void quirk_usb_handoff_xhci(struct pci_dev *pdev) static void quirk_usb_early_handoff(struct pci_dev *pdev) { + int ret; + /* Skip Netlogic mips SoC's internal PCI USB controller. * This device does not need/support EHCI/OHCI handoff */ if (pdev->vendor == 0x184e) /* vendor Netlogic */ return; + + if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) { + ret = rpi_firmware_init_vl805(pdev); + if (ret) + /* + * Firmware might be outdated, or else, something + * failed, keep going and hope for the best. + */ + dev_warn(&pdev->dev, + "Failed to load VL805's firmware: %d\n", + ret); + } + if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI && pdev->class != PCI_CLASS_SERIAL_USB_OHCI && pdev->class != PCI_CLASS_SERIAL_USB_EHCI &&
On the Raspberry Pi 4, after a PCI reset, VL805's firmware may either be loaded directly from an EEPROM or, if not present, by the SoC's VideCore. Inform VideCore that VL805 was just reset. Also, as this creates a dependency between XHCI_PCI and VideoCore's, reflect that on the firmware interface Kconfg. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> --- Changes since v1: - Make RASPBERRYPI_FIRMWARE dependent on this quirk to make sure it gets compiled when needed. drivers/firmware/Kconfig | 1 + drivers/usb/host/pci-quirks.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+)