| Message ID | 20200424101410.2364219-4-vkoul@kernel.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | usb: xhci: Add support for Renesas USB controllers | expand |
On 24.4.2020 13.14, Vinod Koul wrote: > Some rensas controller like uPD720201 and uPD720202 need firmware to be > loaded. Add these devices in table and invoke renesas firmware loader > functions to check and load the firmware into device memory when > required. > > Signed-off-by: Vinod Koul <vkoul@kernel.org> > --- > drivers/usb/host/xhci-pci.c | 28 ++++++++++++++++++++++++++++ > drivers/usb/host/xhci.h | 1 + > 2 files changed, 29 insertions(+) > > diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c > index b6c2f5c530e3..f26cf072836d 100644 > --- a/drivers/usb/host/xhci-pci.c > +++ b/drivers/usb/host/xhci-pci.c > @@ -15,6 +15,7 @@ > > #include "xhci.h" > #include "xhci-trace.h" > +#include "xhci-pci.h" > > #define SSIC_PORT_NUM 2 > #define SSIC_PORT_CFG2 0x880c > @@ -319,6 +320,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd) > return xhci_pci_reinit(xhci, pdev); > } > > +static bool renesas_device; hmm, we shouldn't need this > + > /* > * We need to register our own PCI probe function (instead of the USB core's > * function) in order to create a second roothub under xHCI. > @@ -328,6 +331,16 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) > int retval; > struct xhci_hcd *xhci; > struct usb_hcd *hcd; > + struct xhci_driver_data *driver_data; > + > + renesas_device = false; > + driver_data = (struct xhci_driver_data *)id->driver_data; > + if (driver_data && driver_data->quirks & XHCI_RENESAS_FW_QUIRK) { > + retval = renesas_xhci_check_request_fw(dev, id); > + if (retval) > + return retval; > + renesas_device = true; > + } > > /* Prevent runtime suspending between USB-2 and USB-3 initialization */ > pm_runtime_get_noresume(&dev->dev); > @@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev) > { > struct xhci_hcd *xhci; > > + if (renesas_device) > + renesas_xhci_pci_exit(dev); > + Ah, I see, what we really should do is make sure the quirks in the driver data get added to xhci->quirks, and then just check for the correct quirk in xhci_pci_remove. if (xhci->quirks & XHCI_RENESAS_FW_QUIRK) renesas_xhci_pci_exit(dev); Heikki Krogerus did some work on this a long time ago, below code is based on his work. It needs to be added: diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index f26cf072836d..5ae4fc10fc31 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -88,8 +88,16 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) { - struct pci_dev *pdev = to_pci_dev(dev); + struct pci_dev *pdev = to_pci_dev(dev); + struct xhci_driver_data *driver_data; + const struct pci_device_id *id; + id = pci_match_id(pdev->driver->id_table, pdev); + + if (id && id->driver_data) { + driver_data = (struct xhci_driver_data *)id->driver_data; + xhci->quirks |= driver_data->quirks; + } /* Look for vendor-specific quirks */ if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK || -Mathias
On 29-04-20, 16:53, Mathias Nyman wrote: > On 24.4.2020 13.14, Vinod Koul wrote: > > Some rensas controller like uPD720201 and uPD720202 need firmware to be > > loaded. Add these devices in table and invoke renesas firmware loader > > functions to check and load the firmware into device memory when > > required. > > > > Signed-off-by: Vinod Koul <vkoul@kernel.org> > > --- > > drivers/usb/host/xhci-pci.c | 28 ++++++++++++++++++++++++++++ > > drivers/usb/host/xhci.h | 1 + > > 2 files changed, 29 insertions(+) > > > > diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c > > index b6c2f5c530e3..f26cf072836d 100644 > > --- a/drivers/usb/host/xhci-pci.c > > +++ b/drivers/usb/host/xhci-pci.c > > @@ -15,6 +15,7 @@ > > > > #include "xhci.h" > > #include "xhci-trace.h" > > +#include "xhci-pci.h" > > > > #define SSIC_PORT_NUM 2 > > #define SSIC_PORT_CFG2 0x880c > > @@ -319,6 +320,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd) > > return xhci_pci_reinit(xhci, pdev); > > } > > > > +static bool renesas_device; > > hmm, we shouldn't need this > > > + > > /* > > * We need to register our own PCI probe function (instead of the USB core's > > * function) in order to create a second roothub under xHCI. > > @@ -328,6 +331,16 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) > > int retval; > > struct xhci_hcd *xhci; > > struct usb_hcd *hcd; > > + struct xhci_driver_data *driver_data; > > + > > + renesas_device = false; > > + driver_data = (struct xhci_driver_data *)id->driver_data; > > + if (driver_data && driver_data->quirks & XHCI_RENESAS_FW_QUIRK) { > > + retval = renesas_xhci_check_request_fw(dev, id); > > + if (retval) > > + return retval; > > + renesas_device = true; > > + } > > > > /* Prevent runtime suspending between USB-2 and USB-3 initialization */ > > pm_runtime_get_noresume(&dev->dev); > > @@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev) > > { > > struct xhci_hcd *xhci; > > > > + if (renesas_device) > > + renesas_xhci_pci_exit(dev); > > + > > Ah, I see, what we really should do is make sure the quirks in the driver data get > added to xhci->quirks, and then just check for the correct quirk in xhci_pci_remove. Ah sure that does sound better, I will update this as well and send an update with these changes > > if (xhci->quirks & XHCI_RENESAS_FW_QUIRK) > renesas_xhci_pci_exit(dev); > > > Heikki Krogerus did some work on this a long time ago, below code is based on his > work. It needs to be added: > diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c > index f26cf072836d..5ae4fc10fc31 100644 > --- a/drivers/usb/host/xhci-pci.c > +++ b/drivers/usb/host/xhci-pci.c > @@ -88,8 +88,16 @@ static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) > > static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) > { > - struct pci_dev *pdev = to_pci_dev(dev); > + struct pci_dev *pdev = to_pci_dev(dev); > + struct xhci_driver_data *driver_data; > + const struct pci_device_id *id; > > + id = pci_match_id(pdev->driver->id_table, pdev); > + > + if (id && id->driver_data) { > + driver_data = (struct xhci_driver_data *)id->driver_data; > + xhci->quirks |= driver_data->quirks; > + } > /* Look for vendor-specific quirks */ > if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && > (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK || > > > -Mathias
On 29-04-20, 19:58, Vinod Koul wrote: > On 29-04-20, 16:53, Mathias Nyman wrote: > > On 24.4.2020 13.14, Vinod Koul wrote: > > > /* Prevent runtime suspending between USB-2 and USB-3 initialization */ > > > pm_runtime_get_noresume(&dev->dev); > > > @@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev) > > > { > > > struct xhci_hcd *xhci; > > > > > > + if (renesas_device) > > > + renesas_xhci_pci_exit(dev); > > > + > > > > Ah, I see, what we really should do is make sure the quirks in the driver data get > > added to xhci->quirks, and then just check for the correct quirk in xhci_pci_remove. > > Ah sure that does sound better, I will update this as well and send an > update with these changes This works for me.. But I have kept the code as in the xhci_pci_probe(), ofcourse removed bool renesas_device. the xhci is not valid before invoking renesas_xhci_check_request_fw(). Is there another way to get xhci from dev without calling usb_hcd_pci_probe(). xhci = hcd_to_xhci(hcd) doesn't seem to work before that!
On 30.4.2020 9.20, Vinod Koul wrote: > On 29-04-20, 19:58, Vinod Koul wrote: >> On 29-04-20, 16:53, Mathias Nyman wrote: >>> On 24.4.2020 13.14, Vinod Koul wrote: > >>>> /* Prevent runtime suspending between USB-2 and USB-3 initialization */ >>>> pm_runtime_get_noresume(&dev->dev); >>>> @@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev) >>>> { >>>> struct xhci_hcd *xhci; >>>> >>>> + if (renesas_device) >>>> + renesas_xhci_pci_exit(dev); >>>> + >>> >>> Ah, I see, what we really should do is make sure the quirks in the driver data get >>> added to xhci->quirks, and then just check for the correct quirk in xhci_pci_remove. >> >> Ah sure that does sound better, I will update this as well and send an >> update with these changes > > This works for me.. But I have kept the code as in the xhci_pci_probe(), > ofcourse removed bool renesas_device. That's fine, xhci is just hcd->hcd_priv, and it doesn't exists before usb_hcd_pci_probe() is called usb_hcd_pci_probe() usb_create_hcd() hcd = kzalloc(sizeof(*hcd) + driver->hcd_priv_size, GFP_KERNEL); -Mathias
On 30-04-20, 11:16, Mathias Nyman wrote: > On 30.4.2020 9.20, Vinod Koul wrote: > > On 29-04-20, 19:58, Vinod Koul wrote: > >> On 29-04-20, 16:53, Mathias Nyman wrote: > >>> On 24.4.2020 13.14, Vinod Koul wrote: > > > >>>> /* Prevent runtime suspending between USB-2 and USB-3 initialization */ > >>>> pm_runtime_get_noresume(&dev->dev); > >>>> @@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev) > >>>> { > >>>> struct xhci_hcd *xhci; > >>>> > >>>> + if (renesas_device) > >>>> + renesas_xhci_pci_exit(dev); > >>>> + > >>> > >>> Ah, I see, what we really should do is make sure the quirks in the driver data get > >>> added to xhci->quirks, and then just check for the correct quirk in xhci_pci_remove. > >> > >> Ah sure that does sound better, I will update this as well and send an > >> update with these changes > > > > This works for me.. But I have kept the code as in the xhci_pci_probe(), > > ofcourse removed bool renesas_device. > > That's fine, xhci is just hcd->hcd_priv, and it doesn't exists before > usb_hcd_pci_probe() is called > > usb_hcd_pci_probe() > usb_create_hcd() > hcd = kzalloc(sizeof(*hcd) + driver->hcd_priv_size, GFP_KERNEL); Right, thanks for confirming
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index b6c2f5c530e3..f26cf072836d 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -15,6 +15,7 @@ #include "xhci.h" #include "xhci-trace.h" +#include "xhci-pci.h" #define SSIC_PORT_NUM 2 #define SSIC_PORT_CFG2 0x880c @@ -319,6 +320,8 @@ static int xhci_pci_setup(struct usb_hcd *hcd) return xhci_pci_reinit(xhci, pdev); } +static bool renesas_device; + /* * We need to register our own PCI probe function (instead of the USB core's * function) in order to create a second roothub under xHCI. @@ -328,6 +331,16 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) int retval; struct xhci_hcd *xhci; struct usb_hcd *hcd; + struct xhci_driver_data *driver_data; + + renesas_device = false; + driver_data = (struct xhci_driver_data *)id->driver_data; + if (driver_data && driver_data->quirks & XHCI_RENESAS_FW_QUIRK) { + retval = renesas_xhci_check_request_fw(dev, id); + if (retval) + return retval; + renesas_device = true; + } /* Prevent runtime suspending between USB-2 and USB-3 initialization */ pm_runtime_get_noresume(&dev->dev); @@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev) { struct xhci_hcd *xhci; + if (renesas_device) + renesas_xhci_pci_exit(dev); + xhci = hcd_to_xhci(pci_get_drvdata(dev)); xhci->xhc_state |= XHCI_STATE_REMOVING; @@ -540,14 +556,26 @@ static void xhci_pci_shutdown(struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ +static const struct xhci_driver_data reneses_data = { + .quirks = XHCI_RENESAS_FW_QUIRK, + .firmware = "renesas_usb_fw.mem", +}; + /* PCI driver selection metadata; PCI hotplugging uses this */ static const struct pci_device_id pci_ids[] = { + { PCI_DEVICE(0x1912, 0x0014), + .driver_data = (unsigned long)&reneses_data, + }, + { PCI_DEVICE(0x1912, 0x0015), + .driver_data = (unsigned long)&reneses_data, + }, /* handle any USB 3.0 xHCI controller */ { PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0), }, { /* end: all zeroes */ } }; MODULE_DEVICE_TABLE(pci, pci_ids); +MODULE_FIRMWARE("renesas_usb_fw.mem"); /* pci driver glue; this is a "new style" PCI driver module */ static struct pci_driver xhci_pci_driver = { diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 3289bb516201..4047363c7423 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1873,6 +1873,7 @@ struct xhci_hcd { #define XHCI_DEFAULT_PM_RUNTIME_ALLOW BIT_ULL(33) #define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(34) #define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35) +#define XHCI_RENESAS_FW_QUIRK BIT_ULL(36) unsigned int num_active_eps; unsigned int limit_active_eps;
Some rensas controller like uPD720201 and uPD720202 need firmware to be loaded. Add these devices in table and invoke renesas firmware loader functions to check and load the firmware into device memory when required. Signed-off-by: Vinod Koul <vkoul@kernel.org> --- drivers/usb/host/xhci-pci.c | 28 ++++++++++++++++++++++++++++ drivers/usb/host/xhci.h | 1 + 2 files changed, 29 insertions(+)