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Date: Tue, 20 May 2014 18:30:12 +0200
From: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To: balbi@...com, gregkh@...uxfoundation.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
joe@...ches.com, auttamchandani@...icube.com,
stern@...land.harvard.edu
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Subject: [PATCH 10/10] usb: gadget: net2280: Use quirks instead of pci id
Use of quirks improve readability and will be easier to add new devices
to this driver.
Suggested-by: Alan Stern <stern@...land.harvard.edu>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
---
drivers/usb/gadget/net2280.c | 83 +++++++++++++++++++++++---------------------
drivers/usb/gadget/net2280.h | 6 ++++
2 files changed, 49 insertions(+), 40 deletions(-)
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 9ced9ff..ce8bc86 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -147,7 +147,7 @@ static inline void enable_pciirqenb(struct net2280_ep *ep)
{
u32 tmp = readl(&ep->dev->regs->pciirqenb0);
- if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (ep->dev->quirks & PLX_LEGACY)
tmp |= BIT(ep->num);
else
tmp |= BIT(ep_bit[ep->num]);
@@ -177,7 +177,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
if ((desc->bEndpointAddress & 0x0f) == EP_DONTUSE)
return -EDOM;
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX) {
+ if (dev->quirks & PLX_SUPERSPEED) {
if ((desc->bEndpointAddress & 0x0f) >= 0x0c)
return -EDOM;
ep->is_in = !!usb_endpoint_dir_in(desc);
@@ -187,8 +187,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
/* sanity check ep-e/ep-f since their fifos are small */
max = usb_endpoint_maxp(desc) & 0x1fff;
- if (ep->num > 4 && max > 64 &&
- (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY))
+ if (ep->num > 4 && max > 64 && (dev->quirks & PLX_LEGACY))
return -ERANGE;
spin_lock_irqsave(&dev->lock, flags);
@@ -233,7 +232,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
}
ep->is_iso = (tmp == USB_ENDPOINT_XFER_ISOC);
/* Enable this endpoint */
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY) {
+ if (dev->quirks & PLX_LEGACY) {
tmp <<= ENDPOINT_TYPE;
tmp |= desc->bEndpointAddress;
/* default full fifo lines */
@@ -263,7 +262,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
/* for OUT transfers, block the rx fifo until a read is posted */
if (!ep->is_in)
writel(BIT(SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
- else if (dev->pdev->device != 0x2280) {
+ else if (!(dev->quirks & PLX_2280)) {
/* Added for 2282, Don't use nak packets on an in endpoint,
* this was ignored on 2280
*/
@@ -279,7 +278,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
tmp = BIT(DATA_PACKET_RECEIVED_INTERRUPT_ENABLE) |
BIT(DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE);
- if (dev->pdev->device == 0x2280)
+ if (dev->quirks & PLX_2280)
tmp |= readl(&ep->regs->ep_irqenb);
writel(tmp, &ep->regs->ep_irqenb);
} else { /* dma, per-request */
@@ -361,7 +360,7 @@ static void ep_reset_228x(struct net2280_regs __iomem *regs,
/* init to our chosen defaults, notably so that we NAK OUT
* packets until the driver queues a read (+note erratum 0112)
*/
- if (!ep->is_in || ep->dev->pdev->device == 0x2280) {
+ if (!ep->is_in || (ep->dev->quirks & PLX_2280)) {
tmp = BIT(SET_NAK_OUT_PACKETS_MODE) |
BIT(SET_NAK_OUT_PACKETS) |
BIT(CLEAR_EP_HIDE_STATUS_PHASE) |
@@ -381,7 +380,7 @@ static void ep_reset_228x(struct net2280_regs __iomem *regs,
writel(tmp, &ep->regs->ep_rsp);
/* scrub most status bits, and flush any fifo state */
- if (ep->dev->pdev->device == 0x2280)
+ if (ep->dev->quirks & PLX_2280)
tmp = BIT(FIFO_OVERFLOW) |
BIT(FIFO_UNDERFLOW);
else
@@ -468,7 +467,7 @@ static int net2280_disable(struct usb_ep *_ep)
spin_lock_irqsave(&ep->dev->lock, flags);
nuke(ep);
- if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (ep->dev->quirks & PLX_SUPERSPEED)
ep_reset_338x(ep->dev->regs, ep);
else
ep_reset_228x(ep->dev->regs, ep);
@@ -742,7 +741,7 @@ static void fill_dma_desc(struct net2280_ep *ep,
if (ep->is_in)
dmacount |= BIT(DMA_DIRECTION);
if ((!ep->is_in && (dmacount % ep->ep.maxpacket) != 0) ||
- ep->dev->pdev->device != 0x2280)
+ !(ep->dev->quirks & PLX_2280))
dmacount |= BIT(END_OF_CHAIN);
req->valid = valid;
@@ -786,14 +785,14 @@ static void start_queue(struct net2280_ep *ep, u32 dmactl, u32 td_dma)
struct net2280_dma_regs __iomem *dma = ep->dma;
unsigned int tmp = BIT(VALID_BIT) | (ep->is_in << DMA_DIRECTION);
- if (ep->dev->pdev->device != 0x2280)
+ if (!(ep->dev->quirks & PLX_2280))
tmp |= BIT(END_OF_CHAIN);
writel(tmp, &dma->dmacount);
writel(readl(&dma->dmastat), &dma->dmastat);
writel(td_dma, &dma->dmadesc);
- if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (ep->dev->quirks & PLX_SUPERSPEED)
dmactl |= BIT(DMA_REQUEST_OUTSTANDING);
writel(dmactl, &dma->dmactl);
@@ -989,7 +988,7 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
/* DMA request while EP halted */
if (ep->dma &&
(readl(&ep->regs->ep_rsp) & BIT(CLEAR_ENDPOINT_HALT)) &&
- (dev->pdev->vendor == PCI_VENDOR_ID_PLX)) {
+ (dev->quirks & PLX_SUPERSPEED)) {
int valid = 1;
if (ep->is_in) {
int expect;
@@ -1120,7 +1119,7 @@ static void scan_dma_completions(struct net2280_ep *ep)
} else if (!ep->is_in &&
(req->req.length % ep->ep.maxpacket) != 0) {
tmp = readl(&ep->regs->ep_stat);
- if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (ep->dev->quirks & PLX_SUPERSPEED)
return dma_done(ep, req, tmp, 0);
/* AVOID TROUBLE HERE by not issuing short reads from
@@ -1231,7 +1230,7 @@ static void abort_dma_338x(struct net2280_ep *ep)
static void abort_dma(struct net2280_ep *ep)
{
- if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (ep->dev->quirks & PLX_LEGACY)
return abort_dma_228x(ep);
return abort_dma_338x(ep);
}
@@ -1389,7 +1388,7 @@ net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
ep->wedged = 1;
} else {
clear_halt(ep);
- if (ep->dev->pdev->vendor == PCI_VENDOR_ID_PLX &&
+ if (ep->dev->quirks & PLX_SUPERSPEED &&
!list_empty(&ep->queue) && ep->td_dma)
restart_dma(ep);
ep->wedged = 0;
@@ -2087,7 +2086,7 @@ static void usb_reset_338x(struct net2280 *dev)
static void usb_reset(struct net2280 *dev)
{
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (dev->quirks & PLX_LEGACY)
return usb_reset_228x(dev);
return usb_reset_338x(dev);
}
@@ -2243,7 +2242,7 @@ static void usb_reinit_338x(struct net2280 *dev)
static void usb_reinit(struct net2280 *dev)
{
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (dev->quirks & PLX_LEGACY)
return usb_reinit_228x(dev);
return usb_reinit_338x(dev);
}
@@ -2341,7 +2340,7 @@ static void ep0_start_338x(struct net2280 *dev)
static void ep0_start(struct net2280 *dev)
{
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (dev->quirks & PLX_LEGACY)
return ep0_start_228x(dev);
return ep0_start_338x(dev);
}
@@ -2385,7 +2384,7 @@ static int net2280_start(struct usb_gadget *_gadget,
goto err_func;
/* Enable force-full-speed testing mode, if desired */
- if (full_speed && dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (full_speed && (dev->quirks & PLX_LEGACY))
writel(BIT(FORCE_FULL_SPEED_MODE), &dev->usb->xcvrdiag);
/* ... then enable host detection and ep0; and we're ready
@@ -2393,7 +2392,7 @@ static int net2280_start(struct usb_gadget *_gadget,
*/
net2280_led_active(dev, 1);
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (dev->quirks & PLX_SUPERSPEED)
defect7374_enable_data_eps_zero(dev);
ep0_start(dev);
@@ -2455,7 +2454,7 @@ static int net2280_stop(struct usb_gadget *_gadget,
net2280_led_active(dev, 0);
/* Disable full-speed test mode */
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (dev->quirks & PLX_LEGACY)
writel(0, &dev->usb->xcvrdiag);
device_remove_file(&dev->pdev->dev, &dev_attr_function);
@@ -2493,7 +2492,7 @@ static void handle_ep_small(struct net2280_ep *ep)
ep_vdbg(ep->dev, "%s ack ep_stat %08x, req %p\n",
ep->ep.name, t, req ? &req->req : 0);
#endif
- if (!ep->is_in || ep->dev->pdev->device == 0x2280)
+ if (!ep->is_in || (ep->dev->quirks & PLX_2280))
writel(t & ~BIT(NAK_OUT_PACKETS), &ep->regs->ep_stat);
else
/* Added for 2282 */
@@ -3102,10 +3101,10 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
}
ep->stopped = 0;
dev->protocol_stall = 0;
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (dev->quirks & PLX_SUPERSPEED)
ep->is_halt = 0;
else{
- if (ep->dev->pdev->device == 0x2280)
+ if (ep->dev->quirks & PLX_2280)
tmp = BIT(FIFO_OVERFLOW) |
BIT(FIFO_UNDERFLOW);
else
@@ -3131,7 +3130,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
cpu_to_le32s(&u.raw[0]);
cpu_to_le32s(&u.raw[1]);
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (dev->quirks & PLX_SUPERSPEED)
defect7374_workaround(dev, u.r);
tmp = 0;
@@ -3214,8 +3213,7 @@ 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->pdev->vendor ==
- PCI_VENDOR_ID_PLX &&
+ if ((ep->dev->quirks & PLX_SUPERSPEED) &&
!list_empty(&e->queue) && e->td_dma)
restart_dma(e);
}
@@ -3237,7 +3235,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
if (e->ep.name == ep0name)
goto do_stall;
set_halt(e);
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX && e->dma)
+ if ((dev->quirks & PLX_SUPERSPEED) && e->dma)
abort_dma(e);
allow_status(ep);
ep_vdbg(dev, "%s set halt\n", ep->ep.name);
@@ -3365,7 +3363,7 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
writel(stat, &dev->regs->irqstat1);
/* some status we can just ignore */
- if (dev->pdev->device == 0x2280)
+ if (dev->quirks & PLX_2280)
stat &= ~(BIT(CONTROL_STATUS_INTERRUPT) |
BIT(SUSPEND_REQUEST_INTERRUPT) |
BIT(RESUME_INTERRUPT) |
@@ -3403,7 +3401,7 @@ static void handle_stat1_irqs(struct net2280 *dev, u32 stat)
writel(tmp, &dma->dmastat);
/* dma sync*/
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX) {
+ if (dev->quirks & PLX_SUPERSPEED) {
u32 r_dmacount = readl(&dma->dmacount);
if (!ep->is_in && (r_dmacount & 0x00FFFFFF) &&
(tmp & BIT(DMA_TRANSACTION_DONE_INTERRUPT)))
@@ -3486,7 +3484,7 @@ static irqreturn_t net2280_irq(int irq, void *_dev)
struct net2280 *dev = _dev;
/* shared interrupt, not ours */
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY &&
+ if ((dev->quirks & PLX_LEGACY) &&
(!(readl(&dev->regs->irqstat0) & BIT(INTA_ASSERTED))))
return IRQ_NONE;
@@ -3498,7 +3496,7 @@ static irqreturn_t net2280_irq(int irq, void *_dev)
/* control requests and PIO */
handle_stat0_irqs(dev, readl(&dev->regs->irqstat0));
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX) {
+ if (dev->quirks & PLX_SUPERSPEED) {
/* re-enable interrupt to trigger any possible new interrupt */
u32 pciirqenb1 = readl(&dev->regs->pciirqenb1);
writel(pciirqenb1 & 0x7FFFFFFF, &dev->regs->pciirqenb1);
@@ -3543,7 +3541,7 @@ static void net2280_remove(struct pci_dev *pdev)
}
if (dev->got_irq)
free_irq(pdev->irq, dev);
- if (use_msi && dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (use_msi && dev->quirks & PLX_SUPERSPEED)
pci_disable_msi(pdev);
if (dev->regs)
iounmap(dev->regs);
@@ -3580,9 +3578,10 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
pci_set_drvdata(pdev, dev);
spin_lock_init(&dev->lock);
+ dev->quirks = id->driver_data;
dev->pdev = pdev;
dev->gadget.ops = &net2280_ops;
- dev->gadget.max_speed = (dev->pdev->vendor == PCI_VENDOR_ID_PLX) ?
+ dev->gadget.max_speed = (dev->quirks & PLX_SUPERSPEED) ?
USB_SPEED_SUPER : USB_SPEED_HIGH;
/* the "gadget" abstracts/virtualizes the controller */
@@ -3625,7 +3624,7 @@ 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->pdev->vendor == PCI_VENDOR_ID_PLX) {
+ if (dev->quirks & PLX_SUPERSPEED) {
u32 fsmvalue;
u32 usbstat;
dev->usb_ext = (struct usb338x_usb_ext_regs __iomem *)
@@ -3668,7 +3667,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto done;
}
- if (use_msi && dev->pdev->vendor == PCI_VENDOR_ID_PLX)
+ if (use_msi && (dev->quirks & PLX_SUPERSPEED))
if (pci_enable_msi(pdev))
ep_err(dev, "Failed to enable MSI mode\n");
@@ -3707,7 +3706,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
/* enable lower-overhead pci memory bursts during DMA */
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (dev->quirks & PLX_LEGACY)
writel(BIT(DMA_MEMORY_WRITE_AND_INVALIDATE_ENABLE) |
/*
* 256 write retries may not be enough...
@@ -3763,7 +3762,7 @@ static void net2280_shutdown(struct pci_dev *pdev)
writel(0, &dev->usb->usbctl);
/* Disable full-speed test mode */
- if (dev->pdev->vendor == PCI_VENDOR_ID_PLX_LEGACY)
+ if (dev->quirks & PLX_LEGACY)
writel(0, &dev->usb->xcvrdiag);
}
@@ -3777,6 +3776,7 @@ static const struct pci_device_id pci_ids[] = { {
.device = 0x2280,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
+ .driver_data = PLX_LEGACY | PLX_2280,
}, {
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
.class_mask = ~0,
@@ -3784,6 +3784,7 @@ static const struct pci_device_id pci_ids[] = { {
.device = 0x2282,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
+ .driver_data = PLX_LEGACY,
},
{
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
@@ -3792,6 +3793,7 @@ static const struct pci_device_id pci_ids[] = { {
.device = 0x3380,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
+ .driver_data = PLX_SUPERSPEED,
},
{
.class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
@@ -3800,6 +3802,7 @@ static const struct pci_device_id pci_ids[] = { {
.device = 0x3382,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
+ .driver_data = PLX_SUPERSPEED,
},
{ /* end: all zeroes */ }
};
diff --git a/drivers/usb/gadget/net2280.h b/drivers/usb/gadget/net2280.h
index dc9ca1d..03f1524 100644
--- a/drivers/usb/gadget/net2280.h
+++ b/drivers/usb/gadget/net2280.h
@@ -44,6 +44,10 @@ set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value)
#define PCI_VENDOR_ID_PLX_LEGACY 0x17cc
+#define PLX_LEGACY BIT(0)
+#define PLX_2280 BIT(1)
+#define PLX_SUPERSPEED BIT(2)
+
#define REG_DIAG 0x0
#define RETRY_COUNTER 16
#define FORCE_PCI_SERR 11
@@ -166,6 +170,8 @@ struct net2280 {
u16 chiprev;
int enhanced_mode;
int n_ep;
+ kernel_ulong_t quirks;
+
/* pci state used to access those endpoints */
struct pci_dev *pdev;
--
2.0.0.rc2
--
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