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usb: gadget: net2280: add USB2380 support 

The PLX USB2380 is a PCIe version of the NET2280 and behaves more like the
USB338x but without the USB3.0 superspeed support.

This was tested with g_ether, g_serial, g_mass_storage on a Gateworks
Ventana GW2383.

Cc: Justin DeFields <justindefields@gmail.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Tim Harvey 2016-05-23 06:58:41 -07:00 committed by Felipe Balbi
parent d8877fc7e7
commit 5185c91385
3 changed files with 34 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/gadget/udc/Kconfig
View File

@ -312,7 +312,7 @@ config USB_NET2272_DMA
If unsure, say "N" here. The driver works fine in PIO mode.
config USB_NET2280
tristate "NetChip 228x / PLX USB338x"
tristate "NetChip NET228x / PLX USB3x8x"
depends on PCI
help
NetChip 2280 / 2282 is a PCI based USB peripheral controller which
@ -322,6 +322,8 @@ config USB_NET2280
(for control transfers) and several endpoints with dedicated
functions.
PLX 2380 is a PCIe version of the PLX 2380.
PLX 3380 / 3382 is a PCIe based USB peripheral controller which
supports full, high speed USB 2.0 and super speed USB 3.0
data transfers.

51
drivers/usb/gadget/udc/net2280.c
View File

@ -211,7 +211,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
goto print_err;
}
if (dev->quirks & PLX_SUPERSPEED) {
if (dev->quirks & PLX_PCIE) {
if ((desc->bEndpointAddress & 0x0f) >= 0x0c) {
ret = -EDOM;
goto print_err;
@ -245,7 +245,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
/* set type, direction, address; reset fifo counters */
writel(BIT(FIFO_FLUSH), &ep->regs->ep_stat);
if ((dev->quirks & PLX_SUPERSPEED) && dev->enhanced_mode) {
if ((dev->quirks & PLX_PCIE) && dev->enhanced_mode) {
tmp = readl(&ep->cfg->ep_cfg);
/* If USB ep number doesn't match hardware ep number */
if ((tmp & 0xf) != usb_endpoint_num(desc)) {
@ -316,7 +316,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
BIT(CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
}
if (dev->quirks & PLX_SUPERSPEED)
if (dev->quirks & PLX_PCIE)
ep_clear_seqnum(ep);
writel(tmp, &ep->cfg->ep_cfg);
@ -527,7 +527,7 @@ static int net2280_disable(struct usb_ep *_ep)
spin_lock_irqsave(&ep->dev->lock, flags);
nuke(ep);
if (ep->dev->quirks & PLX_SUPERSPEED)
if (ep->dev->quirks & PLX_PCIE)
ep_reset_338x(ep->dev->regs, ep);
else
ep_reset_228x(ep->dev->regs, ep);
@ -862,7 +862,7 @@ static void start_queue(struct net2280_ep *ep, u32 dmactl, u32 td_dma)
writel(readl(&dma->dmastat), &dma->dmastat);
writel(td_dma, &dma->dmadesc);
if (ep->dev->quirks & PLX_SUPERSPEED)
if (ep->dev->quirks & PLX_PCIE)
dmactl |= BIT(DMA_REQUEST_OUTSTANDING);
writel(dmactl, &dma->dmactl);
@ -1046,7 +1046,7 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
/* kickstart this i/o queue? */
if (list_empty(&ep->queue) && !ep->stopped &&
!((dev->quirks & PLX_SUPERSPEED) && ep->dma &&
!((dev->quirks & PLX_PCIE) && ep->dma &&
(readl(&ep->regs->ep_rsp) & BIT(CLEAR_ENDPOINT_HALT)))) {
/* use DMA if the endpoint supports it, else pio */
@ -1169,7 +1169,7 @@ static void scan_dma_completions(struct net2280_ep *ep)
break;
} else if (!ep->is_in &&
(req->req.length % ep->ep.maxpacket) &&
!(ep->dev->quirks & PLX_SUPERSPEED)) {
!(ep->dev->quirks & PLX_PCIE)) {
tmp = readl(&ep->regs->ep_stat);
/* AVOID TROUBLE HERE by not issuing short reads from
@ -1367,7 +1367,7 @@ net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
ep->wedged = 1;
} else {
clear_halt(ep);
if (ep->dev->quirks & PLX_SUPERSPEED &&
if (ep->dev->quirks & PLX_PCIE &&
!list_empty(&ep->queue) && ep->td_dma)
restart_dma(ep);
ep->wedged = 0;
@ -2394,7 +2394,7 @@ static int net2280_start(struct usb_gadget *_gadget,
*/
net2280_led_active(dev, 1);
if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched)
if ((dev->quirks & PLX_PCIE) && !dev->bug7734_patched)
defect7374_enable_data_eps_zero(dev);
ep0_start(dev);
@ -3063,7 +3063,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
}
ep->stopped = 0;
dev->protocol_stall = 0;
if (!(dev->quirks & PLX_SUPERSPEED)) {
if (!(dev->quirks & PLX_PCIE)) {
if (ep->dev->quirks & PLX_2280)
tmp = BIT(FIFO_OVERFLOW) |
BIT(FIFO_UNDERFLOW);
@ -3090,7 +3090,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
cpu_to_le32s(&u.raw[0]);
cpu_to_le32s(&u.raw[1]);
if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched)
if ((dev->quirks & PLX_PCIE) && !dev->bug7734_patched)
defect7374_workaround(dev, u.r);
tmp = 0;
@ -3173,7 +3173,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
} else {
ep_vdbg(dev, "%s clear halt\n", e->ep.name);
clear_halt(e);
if ((ep->dev->quirks & PLX_SUPERSPEED) &&
if ((ep->dev->quirks & PLX_PCIE) &&
!list_empty(&e->queue) && e->td_dma)
restart_dma(e);
}
@ -3195,7 +3195,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
if (e->ep.name == ep0name)
goto do_stall;
set_halt(e);
if ((dev->quirks & PLX_SUPERSPEED) && e->dma)
if ((dev->quirks & PLX_PCIE) && e->dma)
abort_dma(e);
allow_status(ep);
ep_vdbg(dev, "%s set halt\n", ep->ep.name);
@ -3234,7 +3234,7 @@ do_stall:
#undef w_length
next_endpoints:
if ((dev->quirks & PLX_SUPERSPEED) && dev->enhanced_mode) {
if ((dev->quirks & PLX_PCIE) && dev->enhanced_mode) {
u32 mask = (BIT(ENDPOINT_0_INTERRUPT) |
USB3380_IRQSTAT0_EP_INTR_MASK_IN |
USB3380_IRQSTAT0_EP_INTR_MASK_OUT);
@ -3399,7 +3399,7 @@ __acquires(dev->lock)
writel(tmp, &dma->dmastat);
/* dma sync*/
if (dev->quirks & PLX_SUPERSPEED) {
if (dev->quirks & PLX_PCIE) {
u32 r_dmacount = readl(&dma->dmacount);
if (!ep->is_in && (r_dmacount & 0x00FFFFFF) &&
(tmp & BIT(DMA_TRANSACTION_DONE_INTERRUPT)))
@ -3468,7 +3468,7 @@ static irqreturn_t net2280_irq(int irq, void *_dev)
/* control requests and PIO */
handle_stat0_irqs(dev, readl(&dev->regs->irqstat0));
if (dev->quirks & PLX_SUPERSPEED) {
if (dev->quirks & PLX_PCIE) {
/* re-enable interrupt to trigger any possible new interrupt */
u32 pciirqenb1 = readl(&dev->regs->pciirqenb1);
writel(pciirqenb1 & 0x7FFFFFFF, &dev->regs->pciirqenb1);
@ -3513,7 +3513,7 @@ static void net2280_remove(struct pci_dev *pdev)
}
if (dev->got_irq)
free_irq(pdev->irq, dev);
if (dev->quirks & PLX_SUPERSPEED)
if (dev->quirks & PLX_PCIE)
pci_disable_msi(pdev);
if (dev->regs)
iounmap(dev->regs);
@ -3593,7 +3593,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
dev->dep = (struct net2280_dep_regs __iomem *) (base + 0x0200);
dev->epregs = (struct net2280_ep_regs __iomem *) (base + 0x0300);
if (dev->quirks & PLX_SUPERSPEED) {
if (dev->quirks & PLX_PCIE) {
u32 fsmvalue;
u32 usbstat;
dev->usb_ext = (struct usb338x_usb_ext_regs __iomem *)
@ -3637,7 +3637,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto done;
}
if (dev->quirks & PLX_SUPERSPEED)
if (dev->quirks & PLX_PCIE)
if (pci_enable_msi(pdev))
ep_err(dev, "Failed to enable MSI mode\n");
@ -3755,10 +3755,19 @@ static const struct pci_device_id pci_ids[] = { {
.class = PCI_CLASS_SERIAL_USB_DEVICE,
.class_mask = ~0,
.vendor = PCI_VENDOR_ID_PLX,
.device = 0x2380,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = PLX_PCIE,
},
{
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
.class_mask = ~0,
.vendor = PCI_VENDOR_ID_PLX,
.device = 0x3380,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = PLX_SUPERSPEED,
.driver_data = PLX_PCIE | PLX_SUPERSPEED,
},
{
.class = PCI_CLASS_SERIAL_USB_DEVICE,
@ -3767,7 +3776,7 @@ static const struct pci_device_id pci_ids[] = { {
.device = 0x3382,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = PLX_SUPERSPEED,
.driver_data = PLX_PCIE | PLX_SUPERSPEED,
},
{ /* end: all zeroes */ }
};

1
drivers/usb/gadget/udc/net2280.h
View File

@ -47,6 +47,7 @@ set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value)
#define PLX_LEGACY BIT(0)
#define PLX_2280 BIT(1)
#define PLX_SUPERSPEED BIT(2)
#define PLX_PCIE BIT(3)
#define REG_DIAG 0x0
#define RETRY_COUNTER 16