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-rw-r--r--drivers/usb/dwc3/Makefile13
-rw-r--r--drivers/usb/dwc3/core.c122
-rw-r--r--drivers/usb/dwc3/core.h200
-rw-r--r--drivers/usb/dwc3/debugfs.c214
-rw-r--r--drivers/usb/dwc3/dwc3-exynos.c151
-rw-r--r--drivers/usb/dwc3/dwc3-omap.c116
-rw-r--r--drivers/usb/dwc3/dwc3-pci.c65
-rw-r--r--drivers/usb/dwc3/ep0.c98
-rw-r--r--drivers/usb/dwc3/gadget.c429
-rw-r--r--drivers/usb/dwc3/gadget.h5
-rw-r--r--drivers/usb/dwc3/host.c2
11 files changed, 914 insertions, 501 deletions
diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile
index 900ae74357f..d441fe4c180 100644
--- a/drivers/usb/dwc3/Makefile
+++ b/drivers/usb/dwc3/Makefile
@@ -28,6 +28,19 @@ endif
obj-$(CONFIG_USB_DWC3) += dwc3-omap.o
+##
+# REVISIT Samsung Exynos platform needs the clk API which isn't
+# defined on all architectures. If we allow dwc3-exynos.c compile
+# always we will fail the linking phase on those architectures
+# which don't provide clk api implementation and that's unnaceptable.
+#
+# When Samsung's platform start supporting pm_runtime, this check
+# for HAVE_CLK should be removed.
+##
+ifneq ($(CONFIG_HAVE_CLK),)
+ obj-$(CONFIG_USB_DWC3) += dwc3-exynos.o
+endif
+
ifneq ($(CONFIG_PCI),)
obj-$(CONFIG_USB_DWC3) += dwc3-pci.o
endif
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 7c9df630dbe..7bd815a507e 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -48,10 +48,10 @@
#include <linux/list.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
+#include <linux/of.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
-#include <linux/module.h>
#include "core.h"
#include "gadget.h"
@@ -86,7 +86,7 @@ again:
id = -ENOMEM;
}
- return 0;
+ return id;
}
EXPORT_SYMBOL_GPL(dwc3_get_device_id);
@@ -167,11 +167,11 @@ static void dwc3_free_one_event_buffer(struct dwc3 *dwc,
}
/**
- * dwc3_alloc_one_event_buffer - Allocated one event buffer structure
+ * dwc3_alloc_one_event_buffer - Allocates one event buffer structure
* @dwc: Pointer to our controller context structure
* @length: size of the event buffer
*
- * Returns a pointer to the allocated event buffer structure on succes
+ * Returns a pointer to the allocated event buffer structure on success
* otherwise ERR_PTR(errno).
*/
static struct dwc3_event_buffer *__devinit
@@ -215,10 +215,10 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc)
/**
* dwc3_alloc_event_buffers - Allocates @num event buffers of size @length
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
* @length: size of event buffer
*
- * Returns 0 on success otherwise negative errno. In error the case, dwc
+ * Returns 0 on success otherwise negative errno. In the error case, dwc
* may contain some buffers allocated but not all which were requested.
*/
static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
@@ -251,7 +251,7 @@ static int __devinit dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length)
/**
* dwc3_event_buffers_setup - setup our allocated event buffers
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
*
* Returns 0 on success otherwise negative errno.
*/
@@ -350,7 +350,7 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
dwc3_cache_hwparams(dwc);
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
- reg &= ~DWC3_GCTL_SCALEDOWN(3);
+ reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
reg &= ~DWC3_GCTL_DISSCRAMBLE;
switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) {
@@ -363,9 +363,9 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
/*
* WORKAROUND: DWC3 revisions <1.90a have a bug
- * when The device fails to connect at SuperSpeed
+ * where the device can fail to connect at SuperSpeed
* and falls back to high-speed mode which causes
- * the device to enter in a Connect/Disconnect loop
+ * the device to enter a Connect/Disconnect loop
*/
if (dwc->revision < DWC3_REVISION_190A)
reg |= DWC3_GCTL_U2RSTECN;
@@ -404,8 +404,10 @@ static void dwc3_core_exit(struct dwc3 *dwc)
static int __devinit dwc3_probe(struct platform_device *pdev)
{
+ struct device_node *node = pdev->dev.of_node;
struct resource *res;
struct dwc3 *dwc;
+ struct device *dev = &pdev->dev;
int ret = -ENOMEM;
int irq;
@@ -415,39 +417,39 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
u8 mode;
- mem = kzalloc(sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
+ mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK, GFP_KERNEL);
if (!mem) {
- dev_err(&pdev->dev, "not enough memory\n");
- goto err0;
+ dev_err(dev, "not enough memory\n");
+ return -ENOMEM;
}
dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
dwc->mem = mem;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
- dev_err(&pdev->dev, "missing resource\n");
- goto err1;
+ dev_err(dev, "missing resource\n");
+ return -ENODEV;
}
dwc->res = res;
- res = request_mem_region(res->start, resource_size(res),
- dev_name(&pdev->dev));
+ res = devm_request_mem_region(dev, res->start, resource_size(res),
+ dev_name(dev));
if (!res) {
- dev_err(&pdev->dev, "can't request mem region\n");
- goto err1;
+ dev_err(dev, "can't request mem region\n");
+ return -ENOMEM;
}
- regs = ioremap(res->start, resource_size(res));
+ regs = devm_ioremap(dev, res->start, resource_size(res));
if (!regs) {
- dev_err(&pdev->dev, "ioremap failed\n");
- goto err2;
+ dev_err(dev, "ioremap failed\n");
+ return -ENOMEM;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
- dev_err(&pdev->dev, "missing IRQ\n");
- goto err3;
+ dev_err(dev, "missing IRQ\n");
+ return -ENODEV;
}
spin_lock_init(&dwc->lock);
@@ -455,7 +457,7 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
dwc->regs = regs;
dwc->regs_size = resource_size(res);
- dwc->dev = &pdev->dev;
+ dwc->dev = dev;
dwc->irq = irq;
if (!strncmp("super", maximum_speed, 5))
@@ -469,14 +471,17 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
else
dwc->maximum_speed = DWC3_DCFG_SUPERSPEED;
- pm_runtime_enable(&pdev->dev);
- pm_runtime_get_sync(&pdev->dev);
- pm_runtime_forbid(&pdev->dev);
+ if (of_get_property(node, "tx-fifo-resize", NULL))
+ dwc->needs_fifo_resize = true;
+
+ pm_runtime_enable(dev);
+ pm_runtime_get_sync(dev);
+ pm_runtime_forbid(dev);
ret = dwc3_core_init(dwc);
if (ret) {
- dev_err(&pdev->dev, "failed to initialize core\n");
- goto err3;
+ dev_err(dev, "failed to initialize core\n");
+ return ret;
}
mode = DWC3_MODE(dwc->hwparams.hwparams0);
@@ -486,49 +491,49 @@ static int __devinit dwc3_probe(struct platform_device *pdev)
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE);
ret = dwc3_gadget_init(dwc);
if (ret) {
- dev_err(&pdev->dev, "failed to initialize gadget\n");
- goto err4;
+ dev_err(dev, "failed to initialize gadget\n");
+ goto err1;
}
break;
case DWC3_MODE_HOST:
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST);
ret = dwc3_host_init(dwc);
if (ret) {
- dev_err(&pdev->dev, "failed to initialize host\n");
- goto err4;
+ dev_err(dev, "failed to initialize host\n");
+ goto err1;
}
break;
case DWC3_MODE_DRD:
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
ret = dwc3_host_init(dwc);
if (ret) {
- dev_err(&pdev->dev, "failed to initialize host\n");
- goto err4;
+ dev_err(dev, "failed to initialize host\n");
+ goto err1;
}
ret = dwc3_gadget_init(dwc);
if (ret) {
- dev_err(&pdev->dev, "failed to initialize gadget\n");
- goto err4;
+ dev_err(dev, "failed to initialize gadget\n");
+ goto err1;
}
break;
default:
- dev_err(&pdev->dev, "Unsupported mode of operation %d\n", mode);
- goto err4;
+ dev_err(dev, "Unsupported mode of operation %d\n", mode);
+ goto err1;
}
dwc->mode = mode;
ret = dwc3_debugfs_init(dwc);
if (ret) {
- dev_err(&pdev->dev, "failed to initialize debugfs\n");
- goto err5;
+ dev_err(dev, "failed to initialize debugfs\n");
+ goto err2;
}
- pm_runtime_allow(&pdev->dev);
+ pm_runtime_allow(dev);
return 0;
-err5:
+err2:
switch (mode) {
case DWC3_MODE_DEVICE:
dwc3_gadget_exit(dwc);
@@ -545,19 +550,9 @@ err5:
break;
}
-err4:
- dwc3_core_exit(dwc);
-
-err3:
- iounmap(regs);
-
-err2:
- release_mem_region(res->start, resource_size(res));
-
err1:
- kfree(dwc->mem);
+ dwc3_core_exit(dwc);
-err0:
return ret;
}
@@ -590,9 +585,6 @@ static int __devexit dwc3_remove(struct platform_device *pdev)
}
dwc3_core_exit(dwc);
- release_mem_region(res->start, resource_size(res));
- iounmap(dwc->regs);
- kfree(dwc->mem);
return 0;
}
@@ -605,19 +597,9 @@ static struct platform_driver dwc3_driver = {
},
};
+module_platform_driver(dwc3_driver);
+
MODULE_ALIAS("platform:dwc3");
MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("DesignWare USB3 DRD Controller Driver");
-
-static int __devinit dwc3_init(void)
-{
- return platform_driver_register(&dwc3_driver);
-}
-module_init(dwc3_init);
-
-static void __exit dwc3_exit(void)
-{
- platform_driver_unregister(&dwc3_driver);
-}
-module_exit(dwc3_exit);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 9e57f8e9bf1..6c7945b4cad 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -145,22 +145,23 @@
/* Bit fields */
/* Global Configuration Register */
-#define DWC3_GCTL_PWRDNSCALE(n) (n << 19)
+#define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19)
#define DWC3_GCTL_U2RSTECN (1 << 16)
-#define DWC3_GCTL_RAMCLKSEL(x) ((x & DWC3_GCTL_CLK_MASK) << 6)
+#define DWC3_GCTL_RAMCLKSEL(x) (((x) & DWC3_GCTL_CLK_MASK) << 6)
#define DWC3_GCTL_CLK_BUS (0)
#define DWC3_GCTL_CLK_PIPE (1)
#define DWC3_GCTL_CLK_PIPEHALF (2)
#define DWC3_GCTL_CLK_MASK (3)
#define DWC3_GCTL_PRTCAP(n) (((n) & (3 << 12)) >> 12)
-#define DWC3_GCTL_PRTCAPDIR(n) (n << 12)
+#define DWC3_GCTL_PRTCAPDIR(n) ((n) << 12)
#define DWC3_GCTL_PRTCAP_HOST 1
#define DWC3_GCTL_PRTCAP_DEVICE 2
#define DWC3_GCTL_PRTCAP_OTG 3
#define DWC3_GCTL_CORESOFTRESET (1 << 11)
-#define DWC3_GCTL_SCALEDOWN(n) (n << 4)
+#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
+#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
#define DWC3_GCTL_DSBLCLKGTNG (1 << 0)
@@ -172,8 +173,12 @@
#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
+/* Global TX Fifo Size Register */
+#define DWC3_GTXFIFOSIZ_TXFDEF(n) ((n) & 0xffff)
+#define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000)
+
/* Global HWPARAMS1 Register */
-#define DWC3_GHWPARAMS1_EN_PWROPT(n) ((n & (3 << 24)) >> 24)
+#define DWC3_GHWPARAMS1_EN_PWROPT(n) (((n) & (3 << 24)) >> 24)
#define DWC3_GHWPARAMS1_EN_PWROPT_NO 0
#define DWC3_GHWPARAMS1_EN_PWROPT_CLK 1
@@ -198,6 +203,15 @@
#define DWC3_DCTL_APPL1RES (1 << 23)
+#define DWC3_DCTL_TRGTULST_MASK (0x0f << 17)
+#define DWC3_DCTL_TRGTULST(n) ((n) << 17)
+
+#define DWC3_DCTL_TRGTULST_U2 (DWC3_DCTL_TRGTULST(2))
+#define DWC3_DCTL_TRGTULST_U3 (DWC3_DCTL_TRGTULST(3))
+#define DWC3_DCTL_TRGTULST_SS_DIS (DWC3_DCTL_TRGTULST(4))
+#define DWC3_DCTL_TRGTULST_RX_DET (DWC3_DCTL_TRGTULST(5))
+#define DWC3_DCTL_TRGTULST_SS_INACT (DWC3_DCTL_TRGTULST(6))
+
#define DWC3_DCTL_INITU2ENA (1 << 12)
#define DWC3_DCTL_ACCEPTU2ENA (1 << 11)
#define DWC3_DCTL_INITU1ENA (1 << 10)
@@ -260,10 +274,10 @@
/* Device Endpoint Command Register */
#define DWC3_DEPCMD_PARAM_SHIFT 16
-#define DWC3_DEPCMD_PARAM(x) (x << DWC3_DEPCMD_PARAM_SHIFT)
-#define DWC3_DEPCMD_GET_RSC_IDX(x) ((x >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
+#define DWC3_DEPCMD_PARAM(x) ((x) << DWC3_DEPCMD_PARAM_SHIFT)
+#define DWC3_DEPCMD_GET_RSC_IDX(x) (((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
#define DWC3_DEPCMD_STATUS_MASK (0x0f << 12)
-#define DWC3_DEPCMD_STATUS(x) ((x & DWC3_DEPCMD_STATUS_MASK) >> 12)
+#define DWC3_DEPCMD_STATUS(x) (((x) & DWC3_DEPCMD_STATUS_MASK) >> 12)
#define DWC3_DEPCMD_HIPRI_FORCERM (1 << 11)
#define DWC3_DEPCMD_CMDACT (1 << 10)
#define DWC3_DEPCMD_CMDIOC (1 << 8)
@@ -288,7 +302,7 @@
/* Structures */
-struct dwc3_trb_hw;
+struct dwc3_trb;
/**
* struct dwc3_event_buffer - Software event buffer representation
@@ -343,7 +357,7 @@ struct dwc3_ep {
struct list_head request_list;
struct list_head req_queued;
- struct dwc3_trb_hw *trb_pool;
+ struct dwc3_trb *trb_pool;
dma_addr_t trb_pool_dma;
u32 free_slot;
u32 busy_slot;
@@ -418,102 +432,49 @@ enum dwc3_device_state {
DWC3_CONFIGURED_STATE,
};
-/**
- * struct dwc3_trb - transfer request block
- * @bpl: lower 32bit of the buffer
- * @bph: higher 32bit of the buffer
- * @length: buffer size (up to 16mb - 1)
- * @pcm1: packet count m1
- * @trbsts: trb status
- * 0 = ok
- * 1 = missed isoc
- * 2 = setup pending
- * @hwo: hardware owner of descriptor
- * @lst: last trb
- * @chn: chain buffers
- * @csp: continue on short packets (only supported on isoc eps)
- * @trbctl: trb control
- * 1 = normal
- * 2 = control-setup
- * 3 = control-status-2
- * 4 = control-status-3
- * 5 = control-data (first trb of data stage)
- * 6 = isochronous-first (first trb of service interval)
- * 7 = isochronous
- * 8 = link trb
- * others = reserved
- * @isp_imi: interrupt on short packet / interrupt on missed isoc
- * @ioc: interrupt on complete
- * @sid_sofn: Stream ID / SOF Number
- */
-struct dwc3_trb {
- u64 bplh;
-
- union {
- struct {
- u32 length:24;
- u32 pcm1:2;
- u32 reserved27_26:2;
- u32 trbsts:4;
-#define DWC3_TRB_STS_OKAY 0
-#define DWC3_TRB_STS_MISSED_ISOC 1
-#define DWC3_TRB_STS_SETUP_PENDING 2
- };
- u32 len_pcm;
- };
-
- union {
- struct {
- u32 hwo:1;
- u32 lst:1;
- u32 chn:1;
- u32 csp:1;
- u32 trbctl:6;
- u32 isp_imi:1;
- u32 ioc:1;
- u32 reserved13_12:2;
- u32 sid_sofn:16;
- u32 reserved31_30:2;
- };
- u32 control;
- };
-} __packed;
+/* TRB Length, PCM and Status */
+#define DWC3_TRB_SIZE_MASK (0x00ffffff)
+#define DWC3_TRB_SIZE_LENGTH(n) ((n) & DWC3_TRB_SIZE_MASK)
+#define DWC3_TRB_SIZE_PCM1(n) (((n) & 0x03) << 24)
+#define DWC3_TRB_SIZE_TRBSTS(n) (((n) & (0x0f << 28) >> 28))
+
+#define DWC3_TRBSTS_OK 0
+#define DWC3_TRBSTS_MISSED_ISOC 1
+#define DWC3_TRBSTS_SETUP_PENDING 2
+
+/* TRB Control */
+#define DWC3_TRB_CTRL_HWO (1 << 0)
+#define DWC3_TRB_CTRL_LST (1 << 1)
+#define DWC3_TRB_CTRL_CHN (1 << 2)
+#define DWC3_TRB_CTRL_CSP (1 << 3)
+#define DWC3_TRB_CTRL_TRBCTL(n) (((n) & 0x3f) << 4)
+#define DWC3_TRB_CTRL_ISP_IMI (1 << 10)
+#define DWC3_TRB_CTRL_IOC (1 << 11)
+#define DWC3_TRB_CTRL_SID_SOFN(n) (((n) & 0xffff) << 14)
+
+#define DWC3_TRBCTL_NORMAL DWC3_TRB_CTRL_TRBCTL(1)
+#define DWC3_TRBCTL_CONTROL_SETUP DWC3_TRB_CTRL_TRBCTL(2)
+#define DWC3_TRBCTL_CONTROL_STATUS2 DWC3_TRB_CTRL_TRBCTL(3)
+#define DWC3_TRBCTL_CONTROL_STATUS3 DWC3_TRB_CTRL_TRBCTL(4)
+#define DWC3_TRBCTL_CONTROL_DATA DWC3_TRB_CTRL_TRBCTL(5)
+#define DWC3_TRBCTL_ISOCHRONOUS_FIRST DWC3_TRB_CTRL_TRBCTL(6)
+#define DWC3_TRBCTL_ISOCHRONOUS DWC3_TRB_CTRL_TRBCTL(7)
+#define DWC3_TRBCTL_LINK_TRB DWC3_TRB_CTRL_TRBCTL(8)
/**
- * struct dwc3_trb_hw - transfer request block (hw format)
+ * struct dwc3_trb - transfer request block (hw format)
* @bpl: DW0-3
* @bph: DW4-7
* @size: DW8-B
* @trl: DWC-F
*/
-struct dwc3_trb_hw {
- __le32 bpl;
- __le32 bph;
- __le32 size;
- __le32 ctrl;
+struct dwc3_trb {
+ u32 bpl;
+ u32 bph;
+ u32 size;
+ u32 ctrl;
} __packed;
-static inline void dwc3_trb_to_hw(struct dwc3_trb *nat, struct dwc3_trb_hw *hw)
-{
- hw->bpl = cpu_to_le32(lower_32_bits(nat->bplh));
- hw->bph = cpu_to_le32(upper_32_bits(nat->bplh));
- hw->size = cpu_to_le32p(&nat->len_pcm);
- /* HWO is written last */
- hw->ctrl = cpu_to_le32p(&nat->control);
-}
-
-static inline void dwc3_trb_to_nat(struct dwc3_trb_hw *hw, struct dwc3_trb *nat)
-{
- u64 bplh;
-
- bplh = le32_to_cpup(&hw->bpl);
- bplh |= (u64) le32_to_cpup(&hw->bph) << 32;
- nat->bplh = bplh;
-
- nat->len_pcm = le32_to_cpup(&hw->size);
- nat->control = le32_to_cpup(&hw->ctrl);
-}
-
/**
* dwc3_hwparams - copy of HWPARAMS registers
* @hwparams0 - GHWPARAMS0
@@ -546,8 +507,13 @@ struct dwc3_hwparams {
#define DWC3_MODE_DRD 2
#define DWC3_MODE_HUB 3
+#define DWC3_MDWIDTH(n) (((n) & 0xff00) >> 8)
+
/* HWPARAMS1 */
-#define DWC3_NUM_INT(n) (((n) & (0x3f << 15)) >> 15)
+#define DWC3_NUM_INT(n) (((n) & (0x3f << 15)) >> 15)
+
+/* HWPARAMS7 */
+#define DWC3_RAM1_DEPTH(n) ((n) & 0xffff)
struct dwc3_request {
struct usb_request request;
@@ -555,7 +521,7 @@ struct dwc3_request {
struct dwc3_ep *dep;
u8 epnum;
- struct dwc3_trb_hw *trb;
+ struct dwc3_trb *trb;
dma_addr_t trb_dma;
unsigned direction:1;
@@ -572,7 +538,6 @@ struct dwc3_request {
* @ctrl_req_addr: dma address of ctrl_req
* @ep0_trb: dma address of ep0_trb
* @ep0_usb_req: dummy req used while handling STD USB requests
- * @setup_buf_addr: dma address of setup_buf
* @ep0_bounce_addr: dma address of ep0_bounce
* @lock: for synchronizing
* @dev: pointer to our struct device
@@ -594,6 +559,8 @@ struct dwc3_request {
* @ep0_expect_in: true when we expect a DATA IN transfer
* @start_config_issued: true when StartConfig command has been issued
* @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
+ * @needs_fifo_resize: not all users might want fifo resizing, flag it
+ * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes.
* @ep0_next_event: hold the next expected event
* @ep0state: state of endpoint zero
* @link_state: link state
@@ -604,12 +571,11 @@ struct dwc3_request {
*/
struct dwc3 {
struct usb_ctrlrequest *ctrl_req;
- struct dwc3_trb_hw *ep0_trb;
+ struct dwc3_trb *ep0_trb;
void *ep0_bounce;
u8 *setup_buf;
dma_addr_t ctrl_req_addr;
dma_addr_t ep0_trb_addr;
- dma_addr_t setup_buf_addr;
dma_addr_t ep0_bounce_addr;
struct dwc3_request ep0_usb_req;
/* device lock */
@@ -651,6 +617,8 @@ struct dwc3 {
unsigned start_config_issued:1;
unsigned setup_packet_pending:1;
unsigned delayed_status:1;
+ unsigned needs_fifo_resize:1;
+ unsigned resize_fifos:1;
enum dwc3_ep0_next ep0_next_event;
enum dwc3_ep0_state ep0state;
@@ -662,23 +630,13 @@ struct dwc3 {
struct dwc3_hwparams hwparams;
struct dentry *root;
+
+ u8 test_mode;
+ u8 test_mode_nr;
};
/* -------------------------------------------------------------------------- */
-#define DWC3_TRBSTS_OK 0
-#define DWC3_TRBSTS_MISSED_ISOC 1
-#define DWC3_TRBSTS_SETUP_PENDING 2
-
-#define DWC3_TRBCTL_NORMAL 1
-#define DWC3_TRBCTL_CONTROL_SETUP 2
-#define DWC3_TRBCTL_CONTROL_STATUS2 3
-#define DWC3_TRBCTL_CONTROL_STATUS3 4
-#define DWC3_TRBCTL_CONTROL_DATA 5
-#define DWC3_TRBCTL_ISOCHRONOUS_FIRST 6
-#define DWC3_TRBCTL_ISOCHRONOUS 7
-#define DWC3_TRBCTL_LINK_TRB 8
-
/* -------------------------------------------------------------------------- */
struct dwc3_event_type {
@@ -719,9 +677,14 @@ struct dwc3_event_depevt {
u32 endpoint_event:4;
u32 reserved11_10:2;
u32 status:4;
-#define DEPEVT_STATUS_BUSERR (1 << 0)
-#define DEPEVT_STATUS_SHORT (1 << 1)
-#define DEPEVT_STATUS_IOC (1 << 2)
+
+/* Within XferNotReady */
+#define DEPEVT_STATUS_TRANSFER_ACTIVE (1 << 3)
+
+/* Within XferComplete */
+#define DEPEVT_STATUS_BUSERR (1 << 0)
+#define DEPEVT_STATUS_SHORT (1 << 1)
+#define DEPEVT_STATUS_IOC (1 << 2)
#define DEPEVT_STATUS_LST (1 << 3)
/* Stream event only */
@@ -807,6 +770,7 @@ union dwc3_event {
/* prototypes */
void dwc3_set_mode(struct dwc3 *dwc, u32 mode);
+int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc);
int dwc3_host_init(struct dwc3 *dwc);
void dwc3_host_exit(struct dwc3 *dwc);
diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c
index 433c97c15fc..d4a30f11872 100644
--- a/drivers/usb/dwc3/debugfs.c
+++ b/drivers/usb/dwc3/debugfs.c
@@ -46,6 +46,8 @@
#include <linux/delay.h>
#include <linux/uaccess.h>
+#include <linux/usb/ch9.h>
+
#include "core.h"
#include "gadget.h"
#include "io.h"
@@ -464,6 +466,192 @@ static const struct file_operations dwc3_mode_fops = {
.release = single_release,
};
+static int dwc3_testmode_show(struct seq_file *s, void *unused)
+{
+ struct dwc3 *dwc = s->private;
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(&dwc->lock, flags);
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg &= DWC3_DCTL_TSTCTRL_MASK;
+ reg >>= 1;
+ spin_unlock_irqrestore(&dwc->lock, flags);
+
+ switch (reg) {
+ case 0:
+ seq_printf(s, "no test\n");
+ break;
+ case TEST_J:
+ seq_printf(s, "test_j\n");
+ break;
+ case TEST_K:
+ seq_printf(s, "test_k\n");
+ break;
+ case TEST_SE0_NAK:
+ seq_printf(s, "test_se0_nak\n");
+ break;
+ case TEST_PACKET:
+ seq_printf(s, "test_packet\n");
+ break;
+ case TEST_FORCE_EN:
+ seq_printf(s, "test_force_enable\n");
+ break;
+ default:
+ seq_printf(s, "UNKNOWN %d\n", reg);
+ }
+
+ return 0;
+}
+
+static int dwc3_testmode_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dwc3_testmode_show, inode->i_private);
+}
+
+static ssize_t dwc3_testmode_write(struct file *file,
+ const char __user *ubuf, size_t count, loff_t *ppos)
+{
+ struct seq_file *s = file->private_data;
+ struct dwc3 *dwc = s->private;
+ unsigned long flags;
+ u32 testmode = 0;
+ char buf[32];
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (!strncmp(buf, "test_j", 6))
+ testmode = TEST_J;
+ else if (!strncmp(buf, "test_k", 6))
+ testmode = TEST_K;
+ else if (!strncmp(buf, "test_se0_nak", 12))
+ testmode = TEST_SE0_NAK;
+ else if (!strncmp(buf, "test_packet", 11))
+ testmode = TEST_PACKET;
+ else if (!strncmp(buf, "test_force_enable", 17))
+ testmode = TEST_FORCE_EN;
+ else
+ testmode = 0;
+
+ spin_lock_irqsave(&dwc->lock, flags);
+ dwc3_gadget_set_test_mode(dwc, testmode);
+ spin_unlock_irqrestore(&dwc->lock, flags);
+
+ return count;
+}
+
+static const struct file_operations dwc3_testmode_fops = {
+ .open = dwc3_testmode_open,
+ .write = dwc3_testmode_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int dwc3_link_state_show(struct seq_file *s, void *unused)
+{
+ struct dwc3 *dwc = s->private;
+ unsigned long flags;
+ enum dwc3_link_state state;
+ u32 reg;
+
+ spin_lock_irqsave(&dwc->lock, flags);
+ reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+ state = DWC3_DSTS_USBLNKST(reg);
+ spin_unlock_irqrestore(&dwc->lock, flags);
+
+ switch (state) {
+ case DWC3_LINK_STATE_U0:
+ seq_printf(s, "U0\n");
+ break;
+ case DWC3_LINK_STATE_U1:
+ seq_printf(s, "U1\n");
+ break;
+ case DWC3_LINK_STATE_U2:
+ seq_printf(s, "U2\n");
+ break;
+ case DWC3_LINK_STATE_U3:
+ seq_printf(s, "U3\n");
+ break;
+ case DWC3_LINK_STATE_SS_DIS:
+ seq_printf(s, "SS.Disabled\n");
+ break;
+ case DWC3_LINK_STATE_RX_DET:
+ seq_printf(s, "Rx.Detect\n");
+ break;
+ case DWC3_LINK_STATE_SS_INACT:
+ seq_printf(s, "SS.Inactive\n");
+ break;
+ case DWC3_LINK_STATE_POLL:
+ seq_printf(s, "Poll\n");
+ break;
+ case DWC3_LINK_STATE_RECOV:
+ seq_printf(s, "Recovery\n");
+ break;
+ case DWC3_LINK_STATE_HRESET:
+ seq_printf(s, "HRESET\n");
+ break;
+ case DWC3_LINK_STATE_CMPLY:
+ seq_printf(s, "Compliance\n");
+ break;
+ case DWC3_LINK_STATE_LPBK:
+ seq_printf(s, "Loopback\n");
+ break;
+ default:
+ seq_printf(s, "UNKNOWN %d\n", reg);
+ }
+
+ return 0;
+}
+
+static int dwc3_link_state_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, dwc3_link_state_show, inode->i_private);
+}
+
+static ssize_t dwc3_link_state_write(struct file *file,
+ const char __user *ubuf, size_t count, loff_t *ppos)
+{
+ struct seq_file *s = file->private_data;
+ struct dwc3 *dwc = s->private;
+ unsigned long flags;
+ enum dwc3_link_state state = 0;
+ char buf[32];
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (!strncmp(buf, "SS.Disabled", 11))
+ state = DWC3_LINK_STATE_SS_DIS;
+ else if (!strncmp(buf, "Rx.Detect", 9))
+ state = DWC3_LINK_STATE_RX_DET;
+ else if (!strncmp(buf, "SS.Inactive", 11))
+ state = DWC3_LINK_STATE_SS_INACT;
+ else if (!strncmp(buf, "Recovery", 8))
+ state = DWC3_LINK_STATE_RECOV;
+ else if (!strncmp(buf, "Compliance", 10))
+ state = DWC3_LINK_STATE_CMPLY;
+ else if (!strncmp(buf, "Loopback", 8))
+ state = DWC3_LINK_STATE_LPBK;
+ else
+ return -EINVAL;
+
+ spin_lock_irqsave(&dwc->lock, flags);
+ dwc3_gadget_set_link_state(dwc, state);
+ spin_unlock_irqrestore(&dwc->lock, flags);
+
+ return count;
+}
+
+static const struct file_operations dwc3_link_state_fops = {
+ .open = dwc3_link_state_open,
+ .write = dwc3_link_state_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
{
struct dentry *root;
@@ -471,8 +659,8 @@ int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
int ret;
root = debugfs_create_dir(dev_name(dwc->dev), NULL);
- if (IS_ERR(root)) {
- ret = PTR_ERR(root);
+ if (!root) {
+ ret = -ENOMEM;
goto err0;
}
@@ -480,15 +668,29 @@ int __devinit dwc3_debugfs_init(struct dwc3 *dwc)
file = debugfs_create_file("regdump", S_IRUGO, root, dwc,
&dwc3_regdump_fops);
- if (IS_ERR(file)) {
- ret = PTR_ERR(file);
+ if (!file) {
+ ret = -ENOMEM;
goto err1;
}
file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_mode_fops);
- if (IS_ERR(file)) {
- ret = PTR_ERR(file);
+ if (!file) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
+ dwc, &dwc3_testmode_fops);
+ if (!file) {
+ ret = -ENOMEM;
+ goto err1;
+ }
+
+ file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root,
+ dwc, &dwc3_link_state_fops);
+ if (!file) {
+ ret = -ENOMEM;
goto err1;
}
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
new file mode 100644
index 00000000000..d1903019808
--- /dev/null
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -0,0 +1,151 @@
+/**
+ * dwc3-exynos.c - Samsung EXYNOS DWC3 Specific Glue layer
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Anton Tikhomirov <av.tikhomirov@samsung.com>
+ *
+ * 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
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/dwc3-exynos.h>
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+
+#include "core.h"
+
+struct dwc3_exynos {
+ struct platform_device *dwc3;
+ struct device *dev;
+
+ struct clk *clk;
+};
+
+static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
+{
+ struct dwc3_exynos_data *pdata = pdev->dev.platform_data;
+ struct platform_device *dwc3;
+ struct dwc3_exynos *exynos;
+ struct clk *clk;
+
+ int devid;
+ int ret = -ENOMEM;
+
+ exynos = kzalloc(sizeof(*exynos), GFP_KERNEL);
+ if (!exynos) {
+ dev_err(&pdev->dev, "not enough memory\n");
+ goto err0;
+ }
+
+ platform_set_drvdata(pdev, exynos);
+
+ devid = dwc3_get_device_id();
+ if (devid < 0)
+ goto err1;
+
+ dwc3 = platform_device_alloc("dwc3", devid);
+ if (!dwc3) {
+ dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
+ goto err2;
+ }
+
+ clk = clk_get(&pdev->dev, "usbdrd30");
+ if (IS_ERR(clk)) {
+ dev_err(&pdev->dev, "couldn't get clock\n");
+ ret = -EINVAL;
+ goto err3;
+ }
+
+ dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask);
+
+ dwc3->dev.parent = &pdev->dev;
+ dwc3->dev.dma_mask = pdev->dev.dma_mask;
+ dwc3->dev.dma_parms = pdev->dev.dma_parms;
+ exynos->dwc3 = dwc3;
+ exynos->dev = &pdev->dev;
+ exynos->clk = clk;
+
+ clk_enable(exynos->clk);
+
+ /* PHY initialization */
+ if (!pdata) {
+ dev_dbg(&pdev->dev, "missing platform data\n");
+ } else {
+ if (pdata->phy_init)
+ pdata->phy_init(pdev, pdata->phy_type);
+ }
+
+ ret = platform_device_add_resources(dwc3, pdev->resource,
+ pdev->num_resources);
+ if (ret) {
+ dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n");
+ goto err4;
+ }
+
+ ret = platform_device_add(dwc3);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register dwc3 device\n");
+ goto err4;
+ }
+
+ return 0;
+
+err4:
+ if (pdata && pdata->phy_exit)
+ pdata->phy_exit(pdev, pdata->phy_type);
+
+ clk_disable(clk);
+ clk_put(clk);
+err3:
+ platform_device_put(dwc3);
+err2:
+ dwc3_put_device_id(devid);
+err1:
+ kfree(exynos);
+err0:
+ return ret;
+}
+
+static int __devexit dwc3_exynos_remove(struct platform_device *pdev)
+{
+ struct dwc3_exynos *exynos = platform_get_drvdata(pdev);
+ struct dwc3_exynos_data *pdata = pdev->dev.platform_data;
+
+ platform_device_unregister(exynos->dwc3);
+
+ dwc3_put_device_id(exynos->dwc3->id);
+
+ if (pdata && pdata->phy_exit)
+ pdata->phy_exit(pdev, pdata->phy_type);
+
+ clk_disable(exynos->clk);
+ clk_put(exynos->clk);
+
+ kfree(exynos);
+
+ return 0;
+}
+
+static struct platform_driver dwc3_exynos_driver = {
+ .probe = dwc3_exynos_probe,
+ .remove = __devexit_p(dwc3_exynos_remove),
+ .driver = {
+ .name = "exynos-dwc3",
+ },
+};
+
+module_platform_driver(dwc3_exynos_driver);
+
+MODULE_ALIAS("platform:exynos-dwc3");
+MODULE_AUTHOR("Anton Tikhomirov <av.tikhomirov@samsung.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("DesignWare USB3 EXYNOS Glue Layer");
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 3274ac8f120..d7d9c0ec951 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -46,7 +46,7 @@
#include <linux/dma-mapping.h>
#include <linux/ioport.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/of.h>
#include "core.h"
#include "io.h"
@@ -197,91 +197,99 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
static int __devinit dwc3_omap_probe(struct platform_device *pdev)
{
struct dwc3_omap_data *pdata = pdev->dev.platform_data;
+ struct device_node *node = pdev->dev.of_node;
+
struct platform_device *dwc3;
struct dwc3_omap *omap;
struct resource *res;
+ struct device *dev = &pdev->dev;
int devid;
+ int size;
int ret = -ENOMEM;
int irq;
+ const u32 *utmi_mode;
u32 reg;
void __iomem *base;
void *context;
- omap = kzalloc(sizeof(*omap), GFP_KERNEL);
+ omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
if (!omap) {
- dev_err(&pdev->dev, "not enough memory\n");
- goto err0;
+ dev_err(dev, "not enough memory\n");
+ return -ENOMEM;
}
platform_set_drvdata(pdev, omap);
irq = platform_get_irq(pdev, 1);
if (irq < 0) {
- dev_err(&pdev->dev, "missing IRQ resource\n");
- ret = -EINVAL;
- goto err1;
+ dev_err(dev, "missing IRQ resource\n");
+ return -EINVAL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
- dev_err(&pdev->dev, "missing memory base resource\n");
- ret = -EINVAL;
- goto err1;
+ dev_err(dev, "missing memory base resource\n");
+ return -EINVAL;
}
- base = ioremap_nocache(res->start, resource_size(res));
+ base = devm_ioremap_nocache(dev, res->start, resource_size(res));
if (!base) {
- dev_err(&pdev->dev, "ioremap failed\n");
- goto err1;
+ dev_err(dev, "ioremap failed\n");
+ return -ENOMEM;
}
devid = dwc3_get_device_id();
if (devid < 0)
- goto err2;
+ return -ENODEV;
dwc3 = platform_device_alloc("dwc3", devid);
if (!dwc3) {
- dev_err(&pdev->dev, "couldn't allocate dwc3 device\n");
- goto err3;
+ dev_err(dev, "couldn't allocate dwc3 device\n");
+ goto err1;
}
- context = kzalloc(resource_size(res), GFP_KERNEL);
+ context = devm_kzalloc(dev, resource_size(res), GFP_KERNEL);
if (!context) {
- dev_err(&pdev->dev, "couldn't allocate dwc3 context memory\n");
- goto err4;
+ dev_err(dev, "couldn't allocate dwc3 context memory\n");
+ goto err2;
}
spin_lock_init(&omap->lock);
- dma_set_coherent_mask(&dwc3->dev, pdev->dev.coherent_dma_mask);
+ dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
- dwc3->dev.parent = &pdev->dev;
- dwc3->dev.dma_mask = pdev->dev.dma_mask;
- dwc3->dev.dma_parms = pdev->dev.dma_parms;
+ dwc3->dev.parent = dev;
+ dwc3->dev.dma_mask = dev->dma_mask;
+ dwc3->dev.dma_parms = dev->dma_parms;
omap->resource_size = resource_size(res);
omap->context = context;
- omap->dev = &pdev->dev;
+ omap->dev = dev;
omap->irq = irq;
omap->base = base;
omap->dwc3 = dwc3;
reg = dwc3_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
- if (!pdata) {
- dev_dbg(&pdev->dev, "missing platform data\n");
+ utmi_mode = of_get_property(node, "utmi-mode", &size);
+ if (utmi_mode && size == sizeof(*utmi_mode)) {
+ reg |= *utmi_mode;
} else {
- switch (pdata->utmi_mode) {
- case DWC3_OMAP_UTMI_MODE_SW:
- reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
- break;
- case DWC3_OMAP_UTMI_MODE_HW:
- reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
- break;
- default:
- dev_dbg(&pdev->dev, "UNKNOWN utmi mode %d\n",
- pdata->utmi_mode);
+ if (!pdata) {
+ dev_dbg(dev, "missing platform data\n");
+ } else {
+ switch (pdata->utmi_mode) {
+ case DWC3_OMAP_UTMI_MODE_SW:
+ reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+ break;
+ case DWC3_OMAP_UTMI_MODE_HW:
+ reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
+ break;
+ default:
+ dev_dbg(dev, "UNKNOWN utmi mode %d\n",
+ pdata->utmi_mode);
+ }
}
}
@@ -300,12 +308,12 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
dwc3_writel(omap->base, USBOTGSS_SYSCONFIG, reg);
- ret = request_irq(omap->irq, dwc3_omap_interrupt, 0,
+ ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0,
"dwc3-omap", omap);
if (ret) {
- dev_err(&pdev->dev, "failed to request IRQ #%d --> %d\n",
+ dev_err(dev, "failed to request IRQ #%d --> %d\n",
omap->irq, ret);
- goto err5;
+ goto err2;
}
/* enable all IRQs */
@@ -327,37 +335,24 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev)
ret = platform_device_add_resources(dwc3, pdev->resource,
pdev->num_resources);
if (ret) {
- dev_err(&pdev->dev, "couldn't add resources to dwc3 device\n");
- goto err6;
+ dev_err(dev, "couldn't add resources to dwc3 device\n");
+ goto err2;
}
ret = platform_device_add(dwc3);
if (ret) {
- dev_err(&pdev->dev, "failed to register dwc3 device\n");
- goto err6;
+ dev_err(dev, "failed to register dwc3 device\n");
+ goto err2;
}
return 0;
-err6:
- free_irq(omap->irq, omap);
-
-err5:
- kfree(omap->context);
-
-err4:
- platform_device_put(dwc3);
-
-err3:
- dwc3_put_device_id(devid);
-
err2:
- iounmap(base);
+ platform_device_put(dwc3);
err1:
- kfree(omap);
+ dwc3_put_device_id(devid);
-err0:
return ret;
}
@@ -368,11 +363,6 @@ static int __devexit dwc3_omap_remove(struct platform_device *pdev)
platform_device_unregister(omap->dwc3);
dwc3_put_device_id(omap->dwc3->id);
- free_irq(omap->irq, omap);
- iounmap(omap->base);
-
- kfree(omap->context);
- kfree(omap);
return 0;
}
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 64e1f7c67b0..a9ca9adba39 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -61,32 +61,36 @@ static int __devinit dwc3_pci_probe(struct pci_dev *pci,
struct dwc3_pci *glue;
int ret = -ENOMEM;
int devid;
+ struct device *dev = &pci->dev;
- glue = kzalloc(sizeof(*glue), GFP_KERNEL);
+ glue = devm_kzalloc(dev, sizeof(*glue), GFP_KERNEL);
if (!glue) {
- dev_err(&pci->dev, "not enough memory\n");
- goto err0;
+ dev_err(dev, "not enough memory\n");
+ return -ENOMEM;
}
- glue->dev = &pci->dev;
+ glue->dev = dev;
ret = pci_enable_device(pci);
if (ret) {
- dev_err(&pci->dev, "failed to enable pci device\n");
- goto err1;
+ dev_err(dev, "failed to enable pci device\n");
+ return -ENODEV;
}
pci_set_power_state(pci, PCI_D0);
pci_set_master(pci);
devid = dwc3_get_device_id();
- if (devid < 0)
- goto err2;
+ if (devid < 0) {
+ ret = -ENOMEM;
+ goto err1;
+ }
dwc3 = platform_device_alloc("dwc3", devid);
if (!dwc3) {
- dev_err(&pci->dev, "couldn't allocate dwc3 device\n");
- goto err3;
+ dev_err(dev, "couldn't allocate dwc3 device\n");
+ ret = -ENOMEM;
+ goto err1;
}
memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
@@ -102,41 +106,37 @@ static int __devinit dwc3_pci_probe(struct pci_dev *pci,
ret = platform_device_add_resources(dwc3, res, ARRAY_SIZE(res));
if (ret) {
- dev_err(&pci->dev, "couldn't add resources to dwc3 device\n");
- goto err4;
+ dev_err(dev, "couldn't add resources to dwc3 device\n");
+ goto err2;
}
pci_set_drvdata(pci, glue);
- dma_set_coherent_mask(&dwc3->dev, pci->dev.coherent_dma_mask);
+ dma_set_coherent_mask(&dwc3->dev, dev->coherent_dma_mask);
- dwc3->dev.dma_mask = pci->dev.dma_mask;
- dwc3->dev.dma_parms = pci->dev.dma_parms;
- dwc3->dev.parent = &pci->dev;
- glue->dwc3 = dwc3;
+ dwc3->dev.dma_mask = dev->dma_mask;
+ dwc3->dev.dma_parms = dev->dma_parms;
+ dwc3->dev.parent = dev;
+ glue->dwc3 = dwc3;
ret = platform_device_add(dwc3);
if (ret) {
- dev_err(&pci->dev, "failed to register dwc3 device\n");
- goto err4;
+ dev_err(dev, "failed to register dwc3 device\n");
+ goto err3;
}
return 0;
-err4:
+err3:
pci_set_drvdata(pci, NULL);
platform_device_put(dwc3);
-err3:
- dwc3_put_device_id(devid);
-
err2:
- pci_disable_device(pci);
+ dwc3_put_device_id(devid);
err1:
- kfree(glue);
+ pci_disable_device(pci);
-err0:
return ret;
}
@@ -148,7 +148,6 @@ static void __devexit dwc3_pci_remove(struct pci_dev *pci)
platform_device_unregister(glue->dwc3);
pci_set_drvdata(pci, NULL);
pci_disable_device(pci);
- kfree(glue);
}
static DEFINE_PCI_DEVICE_TABLE(dwc3_pci_id_table) = {
@@ -171,14 +170,4 @@ MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("DesignWare USB3 PCI Glue Layer");
-static int __devinit dwc3_pci_init(void)
-{
- return pci_register_driver(&dwc3_pci_driver);
-}
-module_init(dwc3_pci_init);
-
-static void __exit dwc3_pci_exit(void)
-{
- pci_unregister_driver(&dwc3_pci_driver);
-}
-module_exit(dwc3_pci_exit);
+module_pci_driver(dwc3_pci_driver);
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index c8df1dd967e..25910e251c0 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -76,8 +76,7 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
u32 len, u32 type)
{
struct dwc3_gadget_ep_cmd_params params;
- struct dwc3_trb_hw *trb_hw;
- struct dwc3_trb trb;
+ struct dwc3_trb *trb;
struct dwc3_ep *dep;
int ret;
@@ -88,19 +87,17 @@ static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum, dma_addr_t buf_dma,
return 0;
}
- trb_hw = dwc->ep0_trb;
- memset(&trb, 0, sizeof(trb));
+ trb = dwc->ep0_trb;
- trb.trbctl = type;
- trb.bplh = buf_dma;
- trb.length = len;
+ trb->bpl = lower_32_bits(buf_dma);
+ trb->bph = upper_32_bits(buf_dma);
+ trb->size = len;
+ trb->ctrl = type;
- trb.hwo = 1;
- trb.lst = 1;
- trb.ioc = 1;
- trb.isp_imi = 1;
-
- dwc3_trb_to_hw(&trb, trb_hw);
+ trb->ctrl |= (DWC3_TRB_CTRL_HWO
+ | DWC3_TRB_CTRL_LST
+ | DWC3_TRB_CTRL_IOC
+ | DWC3_TRB_CTRL_ISP_IMI);
memset(&params, 0, sizeof(params));
params.param0 = upper_32_bits(dwc->ep0_trb_addr);
@@ -302,7 +299,7 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc,
dep = dwc->eps[0];
dwc->ep0_usb_req.dep = dep;
dwc->ep0_usb_req.request.length = sizeof(*response_pkt);
- dwc->ep0_usb_req.request.dma = dwc->setup_buf_addr;
+ dwc->ep0_usb_req.request.buf = dwc->setup_buf;
dwc->ep0_usb_req.request.complete = dwc3_ep0_status_cmpl;
return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req);
@@ -315,9 +312,7 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
u32 recip;
u32 wValue;
u32 wIndex;
- u32 reg;
int ret;
- u32 mode;
wValue = le16_to_cpu(ctrl->wValue);
wIndex = le16_to_cpu(ctrl->wIndex);
@@ -356,25 +351,8 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
if (!set)
return -EINVAL;
- mode = wIndex >> 8;
- reg = dwc3_readl(dwc->regs, DWC3_DCTL);
- reg &= ~DWC3_DCTL_TSTCTRL_MASK;
-
- switch (mode) {
- case TEST_J:
- case TEST_K:
- case TEST_SE0_NAK:
- case TEST_PACKET:
- case TEST_FORCE_EN:
- reg |= mode << 1;
- break;
- default:
- return -EINVAL;
- }
- dwc3_writel(dwc->regs, DWC3_DCTL, reg);
- break;
- default:
- return -EINVAL;
+ dwc->test_mode_nr = wIndex >> 8;
+ dwc->test_mode = true;
}
break;
@@ -396,7 +374,7 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
case USB_RECIP_ENDPOINT:
switch (wValue) {
case USB_ENDPOINT_HALT:
- dep = dwc3_wIndex_to_dep(dwc, wIndex);
+ dep = dwc3_wIndex_to_dep(dwc, wIndex);
if (!dep)
return -EINVAL;
ret = __dwc3_gadget_ep_set_halt(dep, set);
@@ -470,8 +448,11 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
case DWC3_ADDRESS_STATE:
ret = dwc3_ep0_delegate_req(dwc, ctrl);
/* if the cfg matches and the cfg is non zero */
- if (!ret && cfg)
+ if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) {
dwc->dev_state = DWC3_CONFIGURED_STATE;
+ dwc->resize_fifos = true;
+ dev_dbg(dwc->dev, "resize fifos flag SET\n");
+ }
break;
case DWC3_CONFIGURED_STATE:
@@ -560,9 +541,10 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
{
struct dwc3_request *r = NULL;
struct usb_request *ur;
- struct dwc3_trb trb;
+ struct dwc3_trb *trb;
struct dwc3_ep *ep0;
u32 transferred;
+ u32 length;
u8 epnum;
epnum = event->endpoint_number;
@@ -573,16 +555,16 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
r = next_request(&ep0->request_list);
ur = &r->request;
- dwc3_trb_to_nat(dwc->ep0_trb, &trb);
+ trb = dwc->ep0_trb;
+ length = trb->size & DWC3_TRB_SIZE_MASK;
if (dwc->ep0_bounced) {
-
transferred = min_t(u32, ur->length,
- ep0->endpoint.maxpacket - trb.length);
+ ep0->endpoint.maxpacket - length);
memcpy(ur->buf, dwc->ep0_bounce, transferred);
dwc->ep0_bounced = false;
} else {
- transferred = ur->length - trb.length;
+ transferred = ur->length - length;
ur->actual += transferred;
}
@@ -614,6 +596,17 @@ static void dwc3_ep0_complete_req(struct dwc3 *dwc,
dwc3_gadget_giveback(dep, r, 0);
}
+ if (dwc->test_mode) {
+ int ret;
+
+ ret = dwc3_gadget_set_test_mode(dwc, dwc->test_mode_nr);
+ if (ret < 0) {
+ dev_dbg(dwc->dev, "Invalid Test #%d\n",
+ dwc->test_mode_nr);
+ dwc3_ep0_stall_and_restart(dwc);
+ }
+ }
+
dwc->ep0state = EP0_SETUP_PHASE;
dwc3_ep0_out_start(dwc);
}
@@ -624,6 +617,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc,
struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
dep->flags &= ~DWC3_EP_BUSY;
+ dep->res_trans_idx = 0;
dwc->setup_packet_pending = false;
switch (dwc->ep0state) {
@@ -679,7 +673,12 @@ static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
DWC3_TRBCTL_CONTROL_DATA);
} else if ((req->request.length % dep->endpoint.maxpacket)
&& (event->endpoint_number == 0)) {
- dwc3_map_buffer_to_dma(req);
+ ret = usb_gadget_map_request(&dwc->gadget, &req->request,
+ event->endpoint_number);
+ if (ret) {
+ dev_dbg(dwc->dev, "failed to map request\n");
+ return;
+ }
WARN_ON(req->request.length > dep->endpoint.maxpacket);
@@ -694,7 +693,12 @@ static void dwc3_ep0_do_control_data(struct dwc3 *dwc,
dwc->ep0_bounce_addr, dep->endpoint.maxpacket,
DWC3_TRBCTL_CONTROL_DATA);
} else {
- dwc3_map_buffer_to_dma(req);
+ ret = usb_gadget_map_request(&dwc->gadget, &req->request,
+ event->endpoint_number);
+ if (ret) {
+ dev_dbg(dwc->dev, "failed to map request\n");
+ return;
+ }
ret = dwc3_ep0_start_trans(dwc, event->endpoint_number,
req->request.dma, req->request.length,
@@ -720,6 +724,12 @@ static void dwc3_ep0_do_control_status(struct dwc3 *dwc, u32 epnum)
{
struct dwc3_ep *dep = dwc->eps[epnum];
+ if (dwc->resize_fifos) {
+ dev_dbg(dwc->dev, "starting to resize fifos\n");
+ dwc3_gadget_resize_tx_fifos(dwc);
+ dwc->resize_fifos = 0;
+ }
+
WARN_ON(dwc3_ep0_start_control_status(dep));
}
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 064b6e2cd41..5255fe975ea 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -54,68 +54,162 @@
#include "gadget.h"
#include "io.h"
-#define DMA_ADDR_INVALID (~(dma_addr_t)0)
-
-void dwc3_map_buffer_to_dma(struct dwc3_request *req)
+/**
+ * dwc3_gadget_set_test_mode - Enables USB2 Test Modes
+ * @dwc: pointer to our context structure
+ * @mode: the mode to set (J, K SE0 NAK, Force Enable)
+ *
+ * Caller should take care of locking. This function will
+ * return 0 on success or -EINVAL if wrong Test Selector
+ * is passed
+ */
+int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode)
{
- struct dwc3 *dwc = req->dep->dwc;
+ u32 reg;
- if (req->request.length == 0) {
- /* req->request.dma = dwc->setup_buf_addr; */
- return;
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg &= ~DWC3_DCTL_TSTCTRL_MASK;
+
+ switch (mode) {
+ case TEST_J:
+ case TEST_K:
+ case TEST_SE0_NAK:
+ case TEST_PACKET:
+ case TEST_FORCE_EN:
+ reg |= mode << 1;
+ break;
+ default:
+ return -EINVAL;
}
- if (req->request.num_sgs) {
- int mapped;
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
- mapped = dma_map_sg(dwc->dev, req->request.sg,
- req->request.num_sgs,
- req->direction ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- if (mapped < 0) {
- dev_err(dwc->dev, "failed to map SGs\n");
- return;
- }
+ return 0;
+}
- req->request.num_mapped_sgs = mapped;
- return;
- }
+/**
+ * dwc3_gadget_set_link_state - Sets USB Link to a particular State
+ * @dwc: pointer to our context structure
+ * @state: the state to put link into
+ *
+ * Caller should take care of locking. This function will
+ * return 0 on success or -ETIMEDOUT.
+ */
+int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state)
+{
+ int retries = 10000;
+ u32 reg;
+
+ reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+ reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
- if (req->request.dma == DMA_ADDR_INVALID) {
- req->request.dma = dma_map_single(dwc->dev, req->request.buf,
- req->request.length, req->direction
- ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- req->mapped = true;
+ /* set requested state */
+ reg |= DWC3_DCTL_ULSTCHNGREQ(state);
+ dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+
+ /* wait for a change in DSTS */
+ while (--retries) {
+ reg = dwc3_readl(dwc->regs, DWC3_DSTS);
+
+ if (DWC3_DSTS_USBLNKST(reg) == state)
+ return 0;
+
+ udelay(5);
}
+
+ dev_vdbg(dwc->dev, "link state change request timed out\n");
+
+ return -ETIMEDOUT;
}
-void dwc3_unmap_buffer_from_dma(struct dwc3_request *req)
+/**
+ * dwc3_gadget_resize_tx_fifos - reallocate fifo spaces for current use-case
+ * @dwc: pointer to our context structure
+ *
+ * This function will a best effort FIFO allocation in order
+ * to improve FIFO usage and throughput, while still allowing
+ * us to enable as many endpoints as possible.
+ *
+ * Keep in mind that this operation will be highly dependent
+ * on the configured size for RAM1 - which contains TxFifo -,
+ * the amount of endpoints enabled on coreConsultant tool, and
+ * the width of the Master Bus.
+ *
+ * In the ideal world, we would always be able to satisfy the
+ * following equation:
+ *
+ * ((512 + 2 * MDWIDTH-Bytes) + (Number of IN Endpoints - 1) * \
+ * (3 * (1024 + MDWIDTH-Bytes) + MDWIDTH-Bytes)) / MDWIDTH-Bytes
+ *
+ * Unfortunately, due to many variables that's not always the case.
+ */
+int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc)
{
- struct dwc3 *dwc = req->dep->dwc;
+ int last_fifo_depth = 0;
+ int ram1_depth;
+ int fifo_size;
+ int mdwidth;
+ int num;
- if (req->request.length == 0) {
- req->request.dma = DMA_ADDR_INVALID;
- return;
- }
+ if (!dwc->needs_fifo_resize)
+ return 0;
- if (req->request.num_mapped_sgs) {
- req->request.dma = DMA_ADDR_INVALID;
- dma_unmap_sg(dwc->dev, req->request.sg,
- req->request.num_mapped_sgs,
- req->direction ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
+ ram1_depth = DWC3_RAM1_DEPTH(dwc->hwparams.hwparams7);
+ mdwidth = DWC3_MDWIDTH(dwc->hwparams.hwparams0);
- req->request.num_mapped_sgs = 0;
- return;
- }
+ /* MDWIDTH is represented in bits, we need it in bytes */
+ mdwidth >>= 3;
+
+ /*
+ * FIXME For now we will only allocate 1 wMaxPacketSize space
+ * for each enabled endpoint, later patches will come to
+ * improve this algorithm so that we better use the internal
+ * FIFO space
+ */
+ for (num = 0; num < DWC3_ENDPOINTS_NUM; num++) {
+ struct dwc3_ep *dep = dwc->eps[num];
+ int fifo_number = dep->number >> 1;
+ int mult = 1;
+ int tmp;
+
+ if (!(dep->number & 1))
+ continue;
+
+ if (!(dep->flags & DWC3_EP_ENABLED))
+ continue;
+
+ if (usb_endpoint_xfer_bulk(dep->desc)
+ || usb_endpoint_xfer_isoc(dep->desc))
+ mult = 3;
+
+ /*
+ * REVISIT: the following assumes we will always have enough
+ * space available on the FIFO RAM for all possible use cases.
+ * Make sure that's true somehow and change FIFO allocation
+ * accordingly.
+ *
+ * If we have Bulk or Isochronous endpoints, we want
+ * them to be able to be very, very fast. So we're giving
+ * those endpoints a fifo_size which is enough for 3 full
+ * packets
+ */
+ tmp = mult * (dep->endpoint.maxpacket + mdwidth);
+ tmp += mdwidth;
+
+ fifo_size = DIV_ROUND_UP(tmp, mdwidth);
+
+ fifo_size |= (last_fifo_depth << 16);
+
+ dev_vdbg(dwc->dev, "%s: Fifo Addr %04x Size %d\n",
+ dep->name, last_fifo_depth, fifo_size & 0xffff);
+
+ dwc3_writel(dwc->regs, DWC3_GTXFIFOSIZ(fifo_number),
+ fifo_size);
- if (req->mapped) {
- dma_unmap_single(dwc->dev, req->request.dma,
- req->request.length, req->direction
- ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- req->mapped = 0;
- req->request.dma = DMA_ADDR_INVALID;
+ last_fifo_depth += (fifo_size & 0xffff);
}
+
+ return 0;
}
void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
@@ -144,14 +238,15 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
if (req->request.status == -EINPROGRESS)
req->request.status = status;
- dwc3_unmap_buffer_from_dma(req);
+ usb_gadget_unmap_request(&dwc->gadget, &req->request,
+ req->direction);
dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
req, dep->name, req->request.actual,
req->request.length, status);
spin_unlock(&dwc->lock);
- req->request.complete(&req->dep->endpoint, &req->request);
+ req->request.complete(&dep->endpoint, &req->request);
spin_lock(&dwc->lock);
}
@@ -219,7 +314,7 @@ int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
}
static dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep,
- struct dwc3_trb_hw *trb)
+ struct dwc3_trb *trb)
{
u32 offset = (char *) trb - (char *) dep->trb_pool;
@@ -368,9 +463,8 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
return ret;
if (!(dep->flags & DWC3_EP_ENABLED)) {
- struct dwc3_trb_hw *trb_st_hw;
- struct dwc3_trb_hw *trb_link_hw;
- struct dwc3_trb trb_link;
+ struct dwc3_trb *trb_st_hw;
+ struct dwc3_trb *trb_link;
ret = dwc3_gadget_set_xfer_resource(dwc, dep);
if (ret)
@@ -390,15 +484,15 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
memset(&trb_link, 0, sizeof(trb_link));
- /* Link TRB for ISOC. The HWO but is never reset */
+ /* Link TRB for ISOC. The HWO bit is never reset */
trb_st_hw = &dep->trb_pool[0];
- trb_link.bplh = dwc3_trb_dma_offset(dep, trb_st_hw);
- trb_link.trbctl = DWC3_TRBCTL_LINK_TRB;
- trb_link.hwo = true;
+ trb_link = &dep->trb_pool[DWC3_TRB_NUM - 1];
- trb_link_hw = &dep->trb_pool[DWC3_TRB_NUM - 1];
- dwc3_trb_to_hw(&trb_link, trb_link_hw);
+ trb_link->bpl = lower_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));
+ trb_link->bph = upper_32_bits(dwc3_trb_dma_offset(dep, trb_st_hw));
+ trb_link->ctrl |= DWC3_TRBCTL_LINK_TRB;
+ trb_link->ctrl |= DWC3_TRB_CTRL_HWO;
}
return 0;
@@ -440,6 +534,7 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
dep->stream_capable = false;
dep->desc = NULL;
+ dep->endpoint.desc = NULL;
dep->comp_desc = NULL;
dep->type = 0;
dep->flags = 0;
@@ -485,16 +580,16 @@ static int dwc3_gadget_ep_enable(struct usb_ep *ep,
switch (usb_endpoint_type(desc)) {
case USB_ENDPOINT_XFER_CONTROL:
- strncat(dep->name, "-control", sizeof(dep->name));
+ strlcat(dep->name, "-control", sizeof(dep->name));
break;
case USB_ENDPOINT_XFER_ISOC:
- strncat(dep->name, "-isoc", sizeof(dep->name));
+ strlcat(dep->name, "-isoc", sizeof(dep->name));
break;
case USB_ENDPOINT_XFER_BULK:
- strncat(dep->name, "-bulk", sizeof(dep->name));
+ strlcat(dep->name, "-bulk", sizeof(dep->name));
break;
case USB_ENDPOINT_XFER_INT:
- strncat(dep->name, "-int", sizeof(dep->name));
+ strlcat(dep->name, "-int", sizeof(dep->name));
break;
default:
dev_err(dwc->dev, "invalid endpoint transfer type\n");
@@ -562,7 +657,6 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep,
req->epnum = dep->number;
req->dep = dep;
- req->request.dma = DMA_ADDR_INVALID;
return &req->request;
}
@@ -585,8 +679,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
unsigned length, unsigned last, unsigned chain)
{
struct dwc3 *dwc = dep->dwc;
- struct dwc3_trb_hw *trb_hw;
- struct dwc3_trb trb;
+ struct dwc3_trb *trb;
unsigned int cur_slot;
@@ -595,7 +688,7 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
length, last ? " last" : "",
chain ? " chain" : "");
- trb_hw = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK];
+ trb = &dep->trb_pool[dep->free_slot & DWC3_TRB_MASK];
cur_slot = dep->free_slot;
dep->free_slot++;
@@ -604,40 +697,32 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
usb_endpoint_xfer_isoc(dep->desc))
return;
- memset(&trb, 0, sizeof(trb));
if (!req->trb) {
dwc3_gadget_move_request_queued(req);
- req->trb = trb_hw;
- req->trb_dma = dwc3_trb_dma_offset(dep, trb_hw);
+ req->trb = trb;
+ req->trb_dma = dwc3_trb_dma_offset(dep, trb);
}
- if (usb_endpoint_xfer_isoc(dep->desc)) {
- trb.isp_imi = true;
- trb.csp = true;
- } else {
- trb.chn = chain;
- trb.lst = last;
- }
-
- if (usb_endpoint_xfer_bulk(dep->desc) && dep->stream_capable)
- trb.sid_sofn = req->request.stream_id;
+ trb->size = DWC3_TRB_SIZE_LENGTH(length);
+ trb->bpl = lower_32_bits(dma);
+ trb->bph = upper_32_bits(dma);
switch (usb_endpoint_type(dep->desc)) {
case USB_ENDPOINT_XFER_CONTROL:
- trb.trbctl = DWC3_TRBCTL_CONTROL_SETUP;
+ trb->ctrl = DWC3_TRBCTL_CONTROL_SETUP;
break;
case USB_ENDPOINT_XFER_ISOC:
- trb.trbctl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
+ trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
/* IOC every DWC3_TRB_NUM / 4 so we can refill */
if (!(cur_slot % (DWC3_TRB_NUM / 4)))
- trb.ioc = last;
+ trb->ctrl |= DWC3_TRB_CTRL_IOC;
break;
case USB_ENDPOINT_XFER_BULK:
case USB_ENDPOINT_XFER_INT:
- trb.trbctl = DWC3_TRBCTL_NORMAL;
+ trb->ctrl = DWC3_TRBCTL_NORMAL;
break;
default:
/*
@@ -647,11 +732,21 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
BUG();
}
- trb.length = length;
- trb.bplh = dma;
- trb.hwo = true;
+ if (usb_endpoint_xfer_isoc(dep->desc)) {
+ trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;
+ trb->ctrl |= DWC3_TRB_CTRL_CSP;
+ } else {
+ if (chain)
+ trb->ctrl |= DWC3_TRB_CTRL_CHN;
+
+ if (last)
+ trb->ctrl |= DWC3_TRB_CTRL_LST;
+ }
- dwc3_trb_to_hw(&trb, trb_hw);
+ if (usb_endpoint_xfer_bulk(dep->desc) && dep->stream_capable)
+ trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(req->request.stream_id);
+
+ trb->ctrl |= DWC3_TRB_CTRL_HWO;
}
/*
@@ -659,14 +754,15 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
* @dep: endpoint for which requests are being prepared
* @starting: true if the endpoint is idle and no requests are queued.
*
- * The functions goes through the requests list and setups TRBs for the
- * transfers. The functions returns once there are not more TRBs available or
- * it run out of requests.
+ * The function goes through the requests list and sets up TRBs for the
+ * transfers. The function returns once there are no more TRBs available or
+ * it runs out of requests.
*/
static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
{
struct dwc3_request *req, *n;
u32 trbs_left;
+ u32 max;
unsigned int last_one = 0;
BUILD_BUG_ON_NOT_POWER_OF_2(DWC3_TRB_NUM);
@@ -674,9 +770,16 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
/* the first request must not be queued */
trbs_left = (dep->busy_slot - dep->free_slot) & DWC3_TRB_MASK;
+ /* Can't wrap around on a non-isoc EP since there's no link TRB */
+ if (!usb_endpoint_xfer_isoc(dep->desc)) {
+ max = DWC3_TRB_NUM - (dep->free_slot & DWC3_TRB_MASK);
+ if (trbs_left > max)
+ trbs_left = max;
+ }
+
/*
- * if busy & slot are equal than it is either full or empty. If we are
- * starting to proceed requests then we are empty. Otherwise we ar
+ * If busy & slot are equal than it is either full or empty. If we are
+ * starting to process requests then we are empty. Otherwise we are
* full and don't do anything
*/
if (!trbs_left) {
@@ -687,7 +790,7 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
* In case we start from scratch, we queue the ISOC requests
* starting from slot 1. This is done because we use ring
* buffer and have no LST bit to stop us. Instead, we place
- * IOC bit TRB_NUM/4. We try to avoid to having an interrupt
+ * IOC bit every TRB_NUM/4. We try to avoid having an interrupt
* after the first request so we start at slot 1 and have
* 7 requests proceed before we hit the first IOC.
* Other transfer types don't use the ring buffer and are
@@ -723,8 +826,8 @@ static void dwc3_prepare_trbs(struct dwc3_ep *dep, bool starting)
length = sg_dma_len(s);
dma = sg_dma_address(s);
- if (i == (request->num_mapped_sgs - 1)
- || sg_is_last(s)) {
+ if (i == (request->num_mapped_sgs - 1) ||
+ sg_is_last(s)) {
last_one = true;
chain = false;
}
@@ -792,8 +895,7 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param,
dwc3_prepare_trbs(dep, start_new);
/*
- * req points to the first request where HWO changed
- * from 0 to 1
+ * req points to the first request where HWO changed from 0 to 1
*/
req = next_request(&dep->req_queued);
}
@@ -819,9 +921,10 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param,
/*
* FIXME we need to iterate over the list of requests
* here and stop, unmap, free and del each of the linked
- * requests instead of we do now.
+ * requests instead of what we do now.
*/
- dwc3_unmap_buffer_from_dma(req);
+ usb_gadget_unmap_request(&dwc->gadget, &req->request,
+ req->direction);
list_del(&req->list);
return ret;
}
@@ -837,6 +940,9 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep, u16 cmd_param,
static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
{
+ struct dwc3 *dwc = dep->dwc;
+ int ret;
+
req->request.actual = 0;
req->request.status = -EINPROGRESS;
req->direction = dep->direction;
@@ -852,9 +958,13 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
* particular token from the Host side.
*
* This will also avoid Host cancelling URBs due to too
- * many NACKs.
+ * many NAKs.
*/
- dwc3_map_buffer_to_dma(req);
+ ret = usb_gadget_map_request(&dwc->gadget, &req->request,
+ dep->direction);
+ if (ret)
+ return ret;
+
list_add_tail(&req->list, &dep->request_list);
/*
@@ -874,11 +984,11 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
int start_trans;
start_trans = 1;
- if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
- dep->flags & DWC3_EP_BUSY)
+ if (usb_endpoint_xfer_isoc(dep->desc) &&
+ (dep->flags & DWC3_EP_BUSY))
start_trans = 0;
- ret = __dwc3_gadget_kick_transfer(dep, 0, start_trans);
+ ret = __dwc3_gadget_kick_transfer(dep, 0, start_trans);
if (ret && ret != -EBUSY) {
struct dwc3 *dwc = dep->dwc;
@@ -1031,8 +1141,12 @@ out:
static int dwc3_gadget_ep_set_wedge(struct usb_ep *ep)
{
struct dwc3_ep *dep = to_dwc3_ep(ep);
+ struct dwc3 *dwc = dep->dwc;
+ unsigned long flags;
+ spin_lock_irqsave(&dwc->lock, flags);
dep->flags |= DWC3_EP_WEDGE;
+ spin_unlock_irqrestore(&dwc->lock, flags);
return dwc3_gadget_ep_set_halt(ep, 1);
}
@@ -1122,26 +1236,20 @@ static int dwc3_gadget_wakeup(struct usb_gadget *g)
goto out;
}
- reg = dwc3_readl(dwc->regs, DWC3_DCTL);
-
- /*
- * Switch link state to Recovery. In HS/FS/LS this means
- * RemoteWakeup Request
- */
- reg |= DWC3_DCTL_ULSTCHNG_RECOVERY;
- dwc3_writel(dwc->regs, DWC3_DCTL, reg);
-
- /* wait for at least 2000us */
- usleep_range(2000, 2500);
+ ret = dwc3_gadget_set_link_state(dwc, DWC3_LINK_STATE_RECOV);
+ if (ret < 0) {
+ dev_err(dwc->dev, "failed to put link in Recovery\n");
+ goto out;
+ }
/* write zeroes to Link Change Request */
reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
- /* pool until Link State change to ON */
+ /* poll until Link State changes to ON */
timeout = jiffies + msecs_to_jiffies(100);
- while (!(time_after(jiffies, timeout))) {
+ while (!time_after(jiffies, timeout)) {
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
/* in HS, means ON */
@@ -1164,8 +1272,11 @@ static int dwc3_gadget_set_selfpowered(struct usb_gadget *g,
int is_selfpowered)
{
struct dwc3 *dwc = gadget_to_dwc(g);
+ unsigned long flags;
+ spin_lock_irqsave(&dwc->lock, flags);
dwc->is_selfpowered = !!is_selfpowered;
+ spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
@@ -1176,10 +1287,13 @@ static void dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on)
u32 timeout = 500;
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
- if (is_on)
- reg |= DWC3_DCTL_RUN_STOP;
- else
+ if (is_on) {
+ reg &= ~DWC3_DCTL_TRGTULST_MASK;
+ reg |= (DWC3_DCTL_RUN_STOP
+ | DWC3_DCTL_TRGTULST_RX_DET);
+ } else {
reg &= ~DWC3_DCTL_RUN_STOP;
+ }
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
@@ -1386,7 +1500,7 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
const struct dwc3_event_depevt *event, int status)
{
struct dwc3_request *req;
- struct dwc3_trb trb;
+ struct dwc3_trb *trb;
unsigned int count;
unsigned int s_pkt = 0;
@@ -1397,20 +1511,20 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
return 1;
}
- dwc3_trb_to_nat(req->trb, &trb);
+ trb = req->trb;
- if (trb.hwo && status != -ESHUTDOWN)
+ if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
/*
* We continue despite the error. There is not much we
- * can do. If we don't clean in up we loop for ever. If
- * we skip the TRB than it gets overwritten reused after
- * a while since we use them in a ring buffer. a BUG()
- * would help. Lets hope that if this occures, someone
+ * can do. If we don't clean it up we loop forever. If
+ * we skip the TRB then it gets overwritten after a
+ * while since we use them in a ring buffer. A BUG()
+ * would help. Lets hope that if this occurs, someone
* fixes the root cause instead of looking away :)
*/
dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n",
dep->name, req->trb);
- count = trb.length;
+ count = trb->size & DWC3_TRB_SIZE_MASK;
if (dep->direction) {
if (count) {
@@ -1434,13 +1548,16 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
dwc3_gadget_giveback(dep, req, status);
if (s_pkt)
break;
- if ((event->status & DEPEVT_STATUS_LST) && trb.lst)
+ if ((event->status & DEPEVT_STATUS_LST) &&
+ (trb->ctrl & DWC3_TRB_CTRL_LST))
break;
- if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc)
+ if ((event->status & DEPEVT_STATUS_IOC) &&
+ (trb->ctrl & DWC3_TRB_CTRL_IOC))
break;
} while (1);
- if ((event->status & DEPEVT_STATUS_IOC) && trb.ioc)
+ if ((event->status & DEPEVT_STATUS_IOC) &&
+ (trb->ctrl & DWC3_TRB_CTRL_IOC))
return 0;
return 1;
}
@@ -1455,11 +1572,9 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
if (event->status & DEPEVT_STATUS_BUSERR)
status = -ECONNRESET;
- clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status);
- if (clean_busy) {
+ clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status);
+ if (clean_busy)
dep->flags &= ~DWC3_EP_BUSY;
- dep->res_trans_idx = 0;
- }
/*
* WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.
@@ -1490,7 +1605,7 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc,
static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
struct dwc3_ep *dep, const struct dwc3_event_depevt *event)
{
- u32 uf;
+ u32 uf, mask;
if (list_empty(&dep->request_list)) {
dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
@@ -1498,16 +1613,10 @@ static void dwc3_gadget_start_isoc(struct dwc3 *dwc,
return;
}
- if (event->parameters) {
- u32 mask;
-
- mask = ~(dep->interval - 1);
- uf = event->parameters & mask;
- /* 4 micro frames in the future */
- uf += dep->interval * 4;
- } else {
- uf = 0;
- }
+ mask = ~(dep->interval - 1);
+ uf = event->parameters & mask;
+ /* 4 micro frames in the future */
+ uf += dep->interval * 4;
__dwc3_gadget_kick_transfer(dep, uf, 1);
}
@@ -1519,8 +1628,8 @@ static void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep,
struct dwc3_event_depevt mod_ev = *event;
/*
- * We were asked to remove one requests. It is possible that this
- * request and a few other were started together and have the same
+ * We were asked to remove one request. It is possible that this
+ * request and a few others were started together and have the same
* transfer index. Since we stopped the complete endpoint we don't
* know how many requests were already completed (and not yet)
* reported and how could be done (later). We purge them all until
@@ -1529,7 +1638,7 @@ static void dwc3_process_ep_cmd_complete(struct dwc3_ep *dep,
mod_ev.status = DEPEVT_STATUS_LST;
dwc3_cleanup_done_reqs(dwc, dep, &mod_ev, -ESHUTDOWN);
dep->flags &= ~DWC3_EP_BUSY;
- /* pending requets are ignored and are queued on XferNotReady */
+ /* pending requests are ignored and are queued on XferNotReady */
}
static void dwc3_ep_cmd_compl(struct dwc3_ep *dep,
@@ -1570,6 +1679,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
switch (event->endpoint_event) {
case DWC3_DEPEVT_XFERCOMPLETE:
+ dep->res_trans_idx = 0;
+
if (usb_endpoint_xfer_isoc(dep->desc)) {
dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",
dep->name);
@@ -1594,7 +1705,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
int ret;
dev_vdbg(dwc->dev, "%s: reason %s\n",
- dep->name, event->status
+ dep->name, event->status &
+ DEPEVT_STATUS_TRANSFER_ACTIVE
? "Transfer Active"
: "Transfer Not Active");
@@ -1805,6 +1917,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= ~DWC3_DCTL_TSTCTRL_MASK;
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+ dwc->test_mode = false;
dwc3_stop_active_transfers(dwc);
dwc3_clear_stall_all_ep(dwc);
@@ -2082,7 +2195,8 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf)
while (left > 0) {
union dwc3_event event;
- memcpy(&event.raw, (evt->buf + evt->lpos), sizeof(event.raw));
+ event.raw = *(u32 *) (evt->buf + evt->lpos);
+
dwc3_process_event_entry(dwc, &event);
/*
* XXX we wrap around correctly to the next entry as almost all
@@ -2123,7 +2237,7 @@ static irqreturn_t dwc3_interrupt(int irq, void *_dwc)
/**
* dwc3_gadget_init - Initializes gadget related registers
- * @dwc: Pointer to out controller context structure
+ * @dwc: pointer to our controller context structure
*
* Returns 0 on success otherwise negative errno.
*/
@@ -2149,9 +2263,8 @@ int __devinit dwc3_gadget_init(struct dwc3 *dwc)
goto err1;
}
- dwc->setup_buf = dma_alloc_coherent(dwc->dev,
- sizeof(*dwc->setup_buf) * 2,
- &dwc->setup_buf_addr, GFP_KERNEL);
+ dwc->setup_buf = kzalloc(sizeof(*dwc->setup_buf) * 2,
+ GFP_KERNEL);
if (!dwc->setup_buf) {
dev_err(dwc->dev, "failed to allocate setup buffer\n");
ret = -ENOMEM;
@@ -2242,8 +2355,7 @@ err4:
dwc->ep0_bounce_addr);
err3:
- dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2,
- dwc->setup_buf, dwc->setup_buf_addr);
+ kfree(dwc->setup_buf);
err2:
dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
@@ -2272,8 +2384,7 @@ void dwc3_gadget_exit(struct dwc3 *dwc)
dma_free_coherent(dwc->dev, 512, dwc->ep0_bounce,
dwc->ep0_bounce_addr);
- dma_free_coherent(dwc->dev, sizeof(*dwc->setup_buf) * 2,
- dwc->setup_buf, dwc->setup_buf_addr);
+ kfree(dwc->setup_buf);
dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
dwc->ep0_trb, dwc->ep0_trb_addr);
diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h
index d97f467d41c..a8600084348 100644
--- a/drivers/usb/dwc3/gadget.h
+++ b/drivers/usb/dwc3/gadget.h
@@ -100,6 +100,9 @@ static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req)
void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
int status);
+int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode);
+int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state);
+
void dwc3_ep0_interrupt(struct dwc3 *dwc,
const struct dwc3_event_depevt *event);
void dwc3_ep0_out_start(struct dwc3 *dwc);
@@ -108,8 +111,6 @@ int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
-void dwc3_map_buffer_to_dma(struct dwc3_request *req);
-void dwc3_unmap_buffer_from_dma(struct dwc3_request *req);
/**
* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index 7cfe211b6c3..b108d18fd40 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -53,7 +53,7 @@ int dwc3_host_init(struct dwc3 *dwc)
struct platform_device *xhci;
int ret;
- xhci = platform_device_alloc("xhci", -1);
+ xhci = platform_device_alloc("xhci-hcd", -1);
if (!xhci) {
dev_err(dwc->dev, "couldn't allocate xHCI device\n");
ret = -ENOMEM;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-11 09:10:00 +0000