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openwrtv4/target/linux/generic/patches-4.4/160-usb-gadget-udc-net2280-add-usb2380-support.patch
Daniel Gimpelevich 993ad29359 kernel: Backport pending appended DTB handling patches 
Backport patches from upstream Linux kernel which are making the
kernel stores the appended dtb not in the same resisters as defined in
the UHI specification, use a separate variable on MIPS.

Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
[some modifications]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2016-09-12 22:36:55 +02:00

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From 5185c91385d73cdf79836eb8548e4726e43ae831 Mon Sep 17 00:00:00 2001
From: Tim Harvey <tharvey@gateworks.com>
Date: Mon, 23 May 2016 06:58:41 -0700
Subject: [PATCH] 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>
---
drivers/usb/gadget/udc/Kconfig | 4 +++-
drivers/usb/gadget/udc/net2280.c | 51 +++++++++++++++++++++++-----------------
drivers/usb/gadget/udc/net2280.h | 1 +
3 files changed, 34 insertions(+), 22 deletions(-)
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
@@ -298,7 +298,7 @@ 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
@@ -308,6 +308,8 @@ 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.
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
@@ -211,7 +211,7 @@ net2280_enable(struct usb_ep *_ep, const
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
/* 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
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
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_e
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
/* 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
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->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_gadg
*/
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 net
}
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 net
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 net
} 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 net
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,
/* 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_de
}
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
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
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_id
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
.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 << 8) | 0xfe),
@@ -3767,7 +3776,7 @@ static const struct pci_device_id pci_id
.device = 0x3382,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
- .driver_data = PLX_SUPERSPEED,
+ .driver_data = PLX_PCIE | PLX_SUPERSPEED,
},
{ /* end: all zeroes */ }
};
--- a/drivers/usb/gadget/udc/net2280.h
+++ b/drivers/usb/gadget/udc/net2280.h
@@ -47,6 +47,7 @@ set_idx_reg(struct net2280_regs __iomem
#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
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