forked from luck/tmp_suning_uos_patched
usb: dwc3: core: split host address space
This fix prevents a problem with dwc3 and host mode where we were requesting the entire memory region in dwc3/core.c, thus preventing xhci-plat from ever ioremapping its own address space. Signed-off-by: Ido Shayevitz <idos@codeaurora.org> Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ido Shayevitz
Felipe Balbi
parent
ab5e59dbdb
commit
51249dca62
|
|
@ -410,7 +410,6 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
|
|||
struct device *dev = &pdev->dev;
|
||||
|
||||
int ret = -ENOMEM;
|
||||
int irq;
|
||||
|
||||
void __iomem *regs;
|
||||
void *mem;
|
||||
|
|
@ -425,15 +424,28 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
|
|||
dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
|
||||
dwc->mem = mem;
|
||||
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
||||
if (!res) {
|
||||
dev_err(dev, "missing resource\n");
|
||||
dev_err(dev, "missing IRQ\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
dwc->xhci_resources[1] = *res;
|
||||
|
||||
dwc->res = res;
|
||||
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!res) {
|
||||
dev_err(dev, "missing memory resource\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
dwc->xhci_resources[0] = *res;
|
||||
dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
|
||||
DWC3_XHCI_REGS_END;
|
||||
|
||||
res = devm_request_mem_region(dev, res->start, resource_size(res),
|
||||
/*
|
||||
* Request memory region but exclude xHCI regs,
|
||||
* since it will be requested by the xhci-plat driver.
|
||||
*/
|
||||
res = devm_request_mem_region(dev, res->start + DWC3_GLOBALS_REGS_START,
|
||||
resource_size(res) - DWC3_GLOBALS_REGS_START,
|
||||
dev_name(dev));
|
||||
if (!res) {
|
||||
dev_err(dev, "can't request mem region\n");
|
||||
|
|
@ -446,19 +458,12 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
|
|||
return -ENOMEM;
|
||||
}
|
||||
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (irq < 0) {
|
||||
dev_err(dev, "missing IRQ\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
spin_lock_init(&dwc->lock);
|
||||
platform_set_drvdata(pdev, dwc);
|
||||
|
||||
dwc->regs = regs;
|
||||
dwc->regs_size = resource_size(res);
|
||||
dwc->dev = dev;
|
||||
dwc->irq = irq;
|
||||
|
||||
if (!strncmp("super", maximum_speed, 5))
|
||||
dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
|
||||
|
|
|
|||
|
|
@ -52,6 +52,7 @@
|
|||
|
||||
/* Global constants */
|
||||
#define DWC3_ENDPOINTS_NUM 32
|
||||
#define DWC3_XHCI_RESOURCES_NUM 2
|
||||
|
||||
#define DWC3_EVENT_BUFFERS_SIZE PAGE_SIZE
|
||||
#define DWC3_EVENT_TYPE_MASK 0xfe
|
||||
|
|
@ -75,6 +76,16 @@
|
|||
#define DWC3_GSNPSID_MASK 0xffff0000
|
||||
#define DWC3_GSNPSREV_MASK 0xffff
|
||||
|
||||
/* DWC3 registers memory space boundries */
|
||||
#define DWC3_XHCI_REGS_START 0x0
|
||||
#define DWC3_XHCI_REGS_END 0x7fff
|
||||
#define DWC3_GLOBALS_REGS_START 0xc100
|
||||
#define DWC3_GLOBALS_REGS_END 0xc6ff
|
||||
#define DWC3_DEVICE_REGS_START 0xc700
|
||||
#define DWC3_DEVICE_REGS_END 0xcbff
|
||||
#define DWC3_OTG_REGS_START 0xcc00
|
||||
#define DWC3_OTG_REGS_END 0xccff
|
||||
|
||||
/* Global Registers */
|
||||
#define DWC3_GSBUSCFG0 0xc100
|
||||
#define DWC3_GSBUSCFG1 0xc104
|
||||
|
|
@ -583,7 +594,7 @@ struct dwc3 {
|
|||
struct device *dev;
|
||||
|
||||
struct platform_device *xhci;
|
||||
struct resource *res;
|
||||
struct resource xhci_resources[DWC3_XHCI_RESOURCES_NUM];
|
||||
|
||||
struct dwc3_event_buffer **ev_buffs;
|
||||
struct dwc3_ep *eps[DWC3_ENDPOINTS_NUM];
|
||||
|
|
@ -594,8 +605,6 @@ struct dwc3 {
|
|||
void __iomem *regs;
|
||||
size_t regs_size;
|
||||
|
||||
int irq;
|
||||
|
||||
u32 num_event_buffers;
|
||||
u32 u1u2;
|
||||
u32 maximum_speed;
|
||||
|
|
|
|||
|
|
@ -39,15 +39,6 @@
|
|||
|
||||
#include "core.h"
|
||||
|
||||
static struct resource generic_resources[] = {
|
||||
{
|
||||
.flags = IORESOURCE_IRQ,
|
||||
},
|
||||
{
|
||||
.flags = IORESOURCE_MEM,
|
||||
},
|
||||
};
|
||||
|
||||
int dwc3_host_init(struct dwc3 *dwc)
|
||||
{
|
||||
struct platform_device *xhci;
|
||||
|
|
@ -68,14 +59,8 @@ int dwc3_host_init(struct dwc3 *dwc)
|
|||
|
||||
dwc->xhci = xhci;
|
||||
|
||||
/* setup resources */
|
||||
generic_resources[0].start = dwc->irq;
|
||||
|
||||
generic_resources[1].start = dwc->res->start;
|
||||
generic_resources[1].end = dwc->res->start + 0x7fff;
|
||||
|
||||
ret = platform_device_add_resources(xhci, generic_resources,
|
||||
ARRAY_SIZE(generic_resources));
|
||||
ret = platform_device_add_resources(xhci, dwc->xhci_resources,
|
||||
DWC3_XHCI_RESOURCES_NUM);
|
||||
if (ret) {
|
||||
dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
|
||||
goto err1;
|
||||
|
|
|
|||
|
|
@ -41,14 +41,26 @@
|
|||
|
||||
#include <linux/io.h>
|
||||
|
||||
#include "core.h"
|
||||
|
||||
static inline u32 dwc3_readl(void __iomem *base, u32 offset)
|
||||
{
|
||||
return readl(base + offset);
|
||||
/*
|
||||
* We requested the mem region starting from the Globals address
|
||||
* space, see dwc3_probe in core.c.
|
||||
* However, the offsets are given starting from xHCI address space.
|
||||
*/
|
||||
return readl(base + (offset - DWC3_GLOBALS_REGS_START));
|
||||
}
|
||||
|
||||
static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value)
|
||||
{
|
||||
writel(value, base + offset);
|
||||
/*
|
||||
* We requested the mem region starting from the Globals address
|
||||
* space, see dwc3_probe in core.c.
|
||||
* However, the offsets are given starting from xHCI address space.
|
||||
*/
|
||||
writel(value, base + (offset - DWC3_GLOBALS_REGS_START));
|
||||
}
|
||||
|
||||
#endif /* __DRIVERS_USB_DWC3_IO_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user