From 950ee4c8f094feecd3add994a2cf4fd335ca509b Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Sun, 19 Mar 2006 20:49:14 +0100 Subject: [PATCH 1/1] [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 Signed-off-by: Greg Kroah-Hartman Support for net2282 in net2280 driver. --- drivers/usb/gadget/Kconfig | 4 +- drivers/usb/gadget/net2280.c | 90 +++++++++++++++++++++++++++--------- drivers/usb/gadget/net2280.h | 2 + 3 files changed, 73 insertions(+), 23 deletions(-) diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index d80f71877d..363b2ad74a 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -69,11 +69,11 @@ choice 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 fb73dc1005..7682c07035 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 -#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 @@ module_param (fifo_mode, ushort, 0644); /* 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 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 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 @@ net2280_enable (struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc) 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 @@ static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep) /* 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 @@ static void ep_reset (struct net2280_regs __iomem *regs, struct net2280_ep *ep) 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 @@ fill_dma_desc (struct net2280_ep *ep, struct net2280_request *req, int valid) */ 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 inline void stop_dma (struct net2280_dma_regs __iomem *dma) 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 @@ static void handle_ep_small (struct net2280_ep *ep) 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 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat) 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 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat) } 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 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat) 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 @@ static void handle_stat1_irqs (struct net2280 *dev, u32 stat) 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 @@ static struct pci_device_id pci_ids [] = { { .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 fff4509cf3..e195abec8d 100644 --- a/drivers/usb/gadget/net2280.h +++ b/drivers/usb/gadget/net2280.h @@ -179,6 +179,7 @@ struct net2280_regs { #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 @@ struct net2280_dma_regs { /* [11.7] */ #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 -- 2.39.2