[PATCH] USB: net2282 and net2280 software compatibility
Below is a patch to gadgets/net2280.[ch] which adds support for the
net2282 controller. The original code was kindly provided by PLX
Technology, I just merged it with the current net2280 driver in the
kernel. Tested on 2.6.15.6, but only with 2282. I did the merge, so
that the behaviour for the 2280 is unaffected (except for short delays
for extra checks).
Signed-off-by: G. Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Support for net2282 in net2280 driver.
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index d80f718..363b2ad 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -69,11 +69,11 @@
often need board-specific hooks.
config USB_GADGET_NET2280
- boolean "NetChip 2280"
+ boolean "NetChip 228x"
depends on PCI
select USB_GADGET_DUALSPEED
help
- NetChip 2280 is a PCI based USB peripheral controller which
+ NetChip 2280 / 2282 is a PCI based USB peripheral controller which
supports both full and high speed USB 2.0 data transfers.
It has six configurable endpoints, as well as endpoint zero
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index fb73dc1..7682c07 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -26,6 +26,8 @@
* Copyright (C) 2003 David Brownell
* Copyright (C) 2003-2005 PLX Technology, Inc.
*
+ * Modified Seth Levy 2005 PLX Technology, Inc. to provide compatibility with 2282 chip
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
@@ -71,8 +73,8 @@
#include <asm/unaligned.h>
-#define DRIVER_DESC "PLX NET2280 USB Peripheral Controller"
-#define DRIVER_VERSION "2005 Feb 03"
+#define DRIVER_DESC "PLX NET228x USB Peripheral Controller"
+#define DRIVER_VERSION "2005 Sept 27"
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
#define EP_DONTUSE 13 /* nonzero */
@@ -118,7 +120,7 @@
/* enable_suspend -- When enabled, the driver will respond to
* USB suspend requests by powering down the NET2280. Otherwise,
* USB suspend requests will be ignored. This is acceptible for
- * self-powered devices, and helps avoid some quirks.
+ * self-powered devices
*/
static int enable_suspend = 0;
@@ -223,6 +225,11 @@
ep->is_in = (tmp & USB_DIR_IN) != 0;
if (!ep->is_in)
writel ((1 << SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
+ else if (dev->pdev->device != 0x2280) {
+ /* Added for 2282, Don't use nak packets on an in endpoint, this was ignored on 2280 */
+ writel ((1 << CLEAR_NAK_OUT_PACKETS)
+ | (1 << CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
+ }
writel (tmp, &ep->regs->ep_cfg);
@@ -232,8 +239,9 @@
writel (tmp, &dev->regs->pciirqenb0);
tmp = (1 << DATA_PACKET_RECEIVED_INTERRUPT_ENABLE)
- | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE)
- | readl (&ep->regs->ep_irqenb);
+ | (1 << DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE);
+ if (dev->pdev->device == 0x2280)
+ tmp |= readl (&ep->regs->ep_irqenb);
writel (tmp, &ep->regs->ep_irqenb);
} else { /* dma, per-request */
tmp = (1 << (8 + ep->num)); /* completion */
@@ -314,10 +322,18 @@
/* init to our chosen defaults, notably so that we NAK OUT
* packets until the driver queues a read (+note erratum 0112)
*/
- tmp = (1 << SET_NAK_OUT_PACKETS_MODE)
+ if (!ep->is_in || ep->dev->pdev->device == 0x2280) {
+ tmp = (1 << SET_NAK_OUT_PACKETS_MODE)
| (1 << SET_NAK_OUT_PACKETS)
| (1 << CLEAR_EP_HIDE_STATUS_PHASE)
| (1 << CLEAR_INTERRUPT_MODE);
+ } else {
+ /* added for 2282 */
+ tmp = (1 << CLEAR_NAK_OUT_PACKETS_MODE)
+ | (1 << CLEAR_NAK_OUT_PACKETS)
+ | (1 << CLEAR_EP_HIDE_STATUS_PHASE)
+ | (1 << CLEAR_INTERRUPT_MODE);
+ }
if (ep->num != 0) {
tmp |= (1 << CLEAR_ENDPOINT_TOGGLE)
@@ -326,14 +342,18 @@
writel (tmp, &ep->regs->ep_rsp);
/* scrub most status bits, and flush any fifo state */
- writel ( (1 << TIMEOUT)
+ if (ep->dev->pdev->device == 0x2280)
+ tmp = (1 << FIFO_OVERFLOW)
+ | (1 << FIFO_UNDERFLOW);
+ else
+ tmp = 0;
+
+ writel (tmp | (1 << TIMEOUT)
| (1 << USB_STALL_SENT)
| (1 << USB_IN_NAK_SENT)
| (1 << USB_IN_ACK_RCVD)
| (1 << USB_OUT_PING_NAK_SENT)
| (1 << USB_OUT_ACK_SENT)
- | (1 << FIFO_OVERFLOW)
- | (1 << FIFO_UNDERFLOW)
| (1 << FIFO_FLUSH)
| (1 << SHORT_PACKET_OUT_DONE_INTERRUPT)
| (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)
@@ -718,7 +738,7 @@
*/
if (ep->is_in)
dmacount |= (1 << DMA_DIRECTION);
- else if ((dmacount % ep->ep.maxpacket) != 0)
+ if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0) || ep->dev->pdev->device != 0x2280)
dmacount |= (1 << END_OF_CHAIN);
req->valid = valid;
@@ -760,9 +780,12 @@
static void start_queue (struct net2280_ep *ep, u32 dmactl, u32 td_dma)
{
struct net2280_dma_regs __iomem *dma = ep->dma;
+ unsigned int tmp = (1 << VALID_BIT) | (ep->is_in << DMA_DIRECTION);
- writel ((1 << VALID_BIT) | (ep->is_in << DMA_DIRECTION),
- &dma->dmacount);
+ if (ep->dev->pdev->device != 0x2280)
+ tmp |= (1 << END_OF_CHAIN);
+
+ writel (tmp, &dma->dmacount);
writel (readl (&dma->dmastat), &dma->dmastat);
writel (td_dma, &dma->dmadesc);
@@ -2110,7 +2133,11 @@
VDEBUG (ep->dev, "%s ack ep_stat %08x, req %p\n",
ep->ep.name, t, req ? &req->req : 0);
#endif
- writel (t & ~(1 << NAK_OUT_PACKETS), &ep->regs->ep_stat);
+ if (!ep->is_in || ep->dev->pdev->device == 0x2280)
+ writel (t & ~(1 << NAK_OUT_PACKETS), &ep->regs->ep_stat);
+ else
+ /* Added for 2282 */
+ writel (t, &ep->regs->ep_stat);
/* for ep0, monitor token irqs to catch data stage length errors
* and to synchronize on status.
@@ -2337,7 +2364,7 @@
u32 raw [2];
struct usb_ctrlrequest r;
} u;
- int tmp = 0;
+ int tmp;
struct net2280_request *req;
if (dev->gadget.speed == USB_SPEED_UNKNOWN) {
@@ -2364,14 +2391,19 @@
}
ep->stopped = 0;
dev->protocol_stall = 0;
- writel ( (1 << TIMEOUT)
+
+ if (ep->dev->pdev->device == 0x2280)
+ tmp = (1 << FIFO_OVERFLOW)
+ | (1 << FIFO_UNDERFLOW);
+ else
+ tmp = 0;
+
+ writel (tmp | (1 << TIMEOUT)
| (1 << USB_STALL_SENT)
| (1 << USB_IN_NAK_SENT)
| (1 << USB_IN_ACK_RCVD)
| (1 << USB_OUT_PING_NAK_SENT)
| (1 << USB_OUT_ACK_SENT)
- | (1 << FIFO_OVERFLOW)
- | (1 << FIFO_UNDERFLOW)
| (1 << SHORT_PACKET_OUT_DONE_INTERRUPT)
| (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)
| (1 << DATA_PACKET_RECEIVED_INTERRUPT)
@@ -2385,6 +2417,8 @@
cpu_to_le32s (&u.raw [0]);
cpu_to_le32s (&u.raw [1]);
+ tmp = 0;
+
#define w_value le16_to_cpup (&u.r.wValue)
#define w_index le16_to_cpup (&u.r.wIndex)
#define w_length le16_to_cpup (&u.r.wLength)
@@ -2594,10 +2628,17 @@
writel (stat, &dev->regs->irqstat1);
/* some status we can just ignore */
- stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
- | (1 << SUSPEND_REQUEST_INTERRUPT)
- | (1 << RESUME_INTERRUPT)
- | (1 << SOF_INTERRUPT));
+ if (dev->pdev->device == 0x2280)
+ stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
+ | (1 << SUSPEND_REQUEST_INTERRUPT)
+ | (1 << RESUME_INTERRUPT)
+ | (1 << SOF_INTERRUPT));
+ else
+ stat &= ~((1 << CONTROL_STATUS_INTERRUPT)
+ | (1 << RESUME_INTERRUPT)
+ | (1 << SOF_DOWN_INTERRUPT)
+ | (1 << SOF_INTERRUPT));
+
if (!stat)
return;
// DEBUG (dev, "irqstat1 %08x\n", stat);
@@ -2939,6 +2980,13 @@
.device = 0x2280,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
+}, {
+ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
+ .class_mask = ~0,
+ .vendor = 0x17cc,
+ .device = 0x2282,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
}, { /* end: all zeroes */ }
};
diff --git a/drivers/usb/gadget/net2280.h b/drivers/usb/gadget/net2280.h
index fff4509..e195abe 100644
--- a/drivers/usb/gadget/net2280.h
+++ b/drivers/usb/gadget/net2280.h
@@ -179,6 +179,7 @@
#define PCI_TARGET_ABORT_RECEIVED_INTERRUPT 19
#define PCI_RETRY_ABORT_INTERRUPT 17
#define PCI_MASTER_CYCLE_DONE_INTERRUPT 16
+#define SOF_DOWN_INTERRUPT 14
#define GPIO_INTERRUPT 13
#define DMA_D_INTERRUPT 12
#define DMA_C_INTERRUPT 11
@@ -346,6 +347,7 @@
#define DMA_ENABLE 1
#define DMA_ADDRESS_HOLD 0
u32 dmastat;
+#define DMA_ABORT_DONE_INTERRUPT 27
#define DMA_SCATTER_GATHER_DONE_INTERRUPT 25
#define DMA_TRANSACTION_DONE_INTERRUPT 24
#define DMA_ABORT 1
