diff --git a/common/usb_storage.c b/common/usb_storage.c
index df0b057308..a57570b73f 100644
--- a/common/usb_storage.c
+++ b/common/usb_storage.c
@@ -98,19 +98,9 @@ struct us_data {
struct scsi_cmd *srb; /* current srb */
trans_reset transport_reset; /* reset routine */
trans_cmnd transport; /* transport routine */
+ unsigned short max_xfer_blk; /* maximum transfer blocks */
};
-#ifdef CONFIG_USB_EHCI_HCD
-/*
- * The U-Boot EHCI driver can handle any transfer length as long as there is
- * enough free heap space left, but the SCSI READ(10) and WRITE(10) commands are
- * limited to 65535 blocks.
- */
-#define USB_MAX_XFER_BLK 65535
-#else
-#define USB_MAX_XFER_BLK 20
-#endif
-
#ifndef CONFIG_BLK
static struct us_data usb_stor[USB_MAX_STOR_DEV];
#endif
@@ -949,6 +939,38 @@ do_retry:
return USB_STOR_TRANSPORT_FAILED;
}
+static void usb_stor_set_max_xfer_blk(struct usb_device *udev,
+ struct us_data *us)
+{
+ unsigned short blk;
+ size_t __maybe_unused size;
+ int __maybe_unused ret;
+
+#ifndef CONFIG_DM_USB
+#ifdef CONFIG_USB_EHCI_HCD
+ /*
+ * The U-Boot EHCI driver can handle any transfer length as long as
+ * there is enough free heap space left, but the SCSI READ(10) and
+ * WRITE(10) commands are limited to 65535 blocks.
+ */
+ blk = USHRT_MAX;
+#else
+ blk = 20;
+#endif
+#else
+ ret = usb_get_max_xfer_size(udev, (size_t *)&size);
+ if (ret < 0) {
+ /* unimplemented, let's use default 20 */
+ blk = 20;
+ } else {
+ if (size > USHRT_MAX * 512)
+ blk = USHRT_MAX;
+ blk = size / 512;
+ }
+#endif
+
+ us->max_xfer_blk = blk;
+}
static int usb_inquiry(struct scsi_cmd *srb, struct us_data *ss)
{
@@ -1150,12 +1172,12 @@ static unsigned long usb_stor_read(struct blk_desc *block_dev, lbaint_t blknr,
/* XXX need some comment here */
retry = 2;
srb->pdata = (unsigned char *)buf_addr;
- if (blks > USB_MAX_XFER_BLK)
- smallblks = USB_MAX_XFER_BLK;
+ if (blks > ss->max_xfer_blk)
+ smallblks = ss->max_xfer_blk;
else
smallblks = (unsigned short) blks;
retry_it:
- if (smallblks == USB_MAX_XFER_BLK)
+ if (smallblks == ss->max_xfer_blk)
usb_show_progress();
srb->datalen = block_dev->blksz * smallblks;
srb->pdata = (unsigned char *)buf_addr;
@@ -1178,7 +1200,7 @@ retry_it:
start, smallblks, buf_addr);
usb_disable_asynch(0); /* asynch transfer allowed */
- if (blkcnt >= USB_MAX_XFER_BLK)
+ if (blkcnt >= ss->max_xfer_blk)
debug("\n");
return blkcnt;
}
@@ -1236,12 +1258,12 @@ static unsigned long usb_stor_write(struct blk_desc *block_dev, lbaint_t blknr,
*/
retry = 2;
srb->pdata = (unsigned char *)buf_addr;
- if (blks > USB_MAX_XFER_BLK)
- smallblks = USB_MAX_XFER_BLK;
+ if (blks > ss->max_xfer_blk)
+ smallblks = ss->max_xfer_blk;
else
smallblks = (unsigned short) blks;
retry_it:
- if (smallblks == USB_MAX_XFER_BLK)
+ if (smallblks == ss->max_xfer_blk)
usb_show_progress();
srb->datalen = block_dev->blksz * smallblks;
srb->pdata = (unsigned char *)buf_addr;
@@ -1263,7 +1285,7 @@ retry_it:
PRIxPTR "\n", start, smallblks, buf_addr);
usb_disable_asynch(0); /* asynch transfer allowed */
- if (blkcnt >= USB_MAX_XFER_BLK)
+ if (blkcnt >= ss->max_xfer_blk)
debug("\n");
return blkcnt;
@@ -1384,6 +1406,10 @@ int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,
ss->irqmaxp = usb_maxpacket(dev, ss->irqpipe);
dev->irq_handle = usb_stor_irq;
}
+
+ /* Set the maximum transfer size per host controller setting */
+ usb_stor_set_max_xfer_blk(dev, ss);
+
dev->privptr = (void *)ss;
return 1;
}
diff --git a/configs/Cyrus_P5020_defconfig b/configs/Cyrus_P5020_defconfig
index 82da854386..37f78a4811 100644
--- a/configs/Cyrus_P5020_defconfig
+++ b/configs/Cyrus_P5020_defconfig
@@ -34,5 +34,4 @@ CONFIG_FSL_ESPI=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_OF_LIBFDT=y
diff --git a/configs/Cyrus_P5040_defconfig b/configs/Cyrus_P5040_defconfig
index 0fc9a07548..d33b514ee0 100644
--- a/configs/Cyrus_P5040_defconfig
+++ b/configs/Cyrus_P5040_defconfig
@@ -34,5 +34,4 @@ CONFIG_FSL_ESPI=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_OF_LIBFDT=y
diff --git a/configs/MPC8610HPCD_defconfig b/configs/MPC8610HPCD_defconfig
index fde837c011..c71d5b18e1 100644
--- a/configs/MPC8610HPCD_defconfig
+++ b/configs/MPC8610HPCD_defconfig
@@ -22,5 +22,4 @@ CONFIG_SCSI=y
CONFIG_SYS_NS16550=y
CONFIG_USB=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_OF_LIBFDT=y
diff --git a/configs/MPC8641HPCN_36BIT_defconfig b/configs/MPC8641HPCN_36BIT_defconfig
index 7318e723a8..9949e8b699 100644
--- a/configs/MPC8641HPCN_36BIT_defconfig
+++ b/configs/MPC8641HPCN_36BIT_defconfig
@@ -21,5 +21,4 @@ CONFIG_PHYLIB=y
CONFIG_SYS_NS16550=y
CONFIG_USB=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_OF_LIBFDT=y
diff --git a/configs/MPC8641HPCN_defconfig b/configs/MPC8641HPCN_defconfig
index def36e4171..c8440d2584 100644
--- a/configs/MPC8641HPCN_defconfig
+++ b/configs/MPC8641HPCN_defconfig
@@ -21,5 +21,4 @@ CONFIG_PHYLIB=y
CONFIG_SYS_NS16550=y
CONFIG_USB=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_OF_LIBFDT=y
diff --git a/configs/apalis_imx6_defconfig b/configs/apalis_imx6_defconfig
index b2284acc34..13f2a3b849 100644
--- a/configs/apalis_imx6_defconfig
+++ b/configs/apalis_imx6_defconfig
@@ -54,7 +54,6 @@ CONFIG_NETDEVICES=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_GADGET=y
CONFIG_CI_UDC=y
CONFIG_USB_GADGET_DOWNLOAD=y
diff --git a/configs/apalis_imx6_nospl_com_defconfig b/configs/apalis_imx6_nospl_com_defconfig
index 239605dadf..7165749cfb 100644
--- a/configs/apalis_imx6_nospl_com_defconfig
+++ b/configs/apalis_imx6_nospl_com_defconfig
@@ -43,7 +43,6 @@ CONFIG_NETDEVICES=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_GADGET=y
CONFIG_CI_UDC=y
CONFIG_USB_GADGET_DOWNLOAD=y
diff --git a/configs/apalis_imx6_nospl_it_defconfig b/configs/apalis_imx6_nospl_it_defconfig
index 1bc05d7266..0ad7674ee5 100644
--- a/configs/apalis_imx6_nospl_it_defconfig
+++ b/configs/apalis_imx6_nospl_it_defconfig
@@ -43,7 +43,6 @@ CONFIG_NETDEVICES=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_GADGET=y
CONFIG_CI_UDC=y
CONFIG_USB_GADGET_DOWNLOAD=y
diff --git a/configs/colibri_imx6_defconfig b/configs/colibri_imx6_defconfig
index 7d1e709d4c..7e100869a4 100644
--- a/configs/colibri_imx6_defconfig
+++ b/configs/colibri_imx6_defconfig
@@ -52,7 +52,6 @@ CONFIG_PHY_MICREL=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_GADGET=y
CONFIG_CI_UDC=y
CONFIG_USB_GADGET_DOWNLOAD=y
diff --git a/configs/colibri_imx6_nospl_defconfig b/configs/colibri_imx6_nospl_defconfig
index 6877993088..ba4b2dd9d4 100644
--- a/configs/colibri_imx6_nospl_defconfig
+++ b/configs/colibri_imx6_nospl_defconfig
@@ -41,7 +41,6 @@ CONFIG_PHY_MICREL=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_GADGET=y
CONFIG_CI_UDC=y
CONFIG_USB_GADGET_DOWNLOAD=y
diff --git a/configs/firefly-rk3288_defconfig b/configs/firefly-rk3288_defconfig
index 82da6016e6..178c879e26 100644
--- a/configs/firefly-rk3288_defconfig
+++ b/configs/firefly-rk3288_defconfig
@@ -73,7 +73,6 @@ CONFIG_USB=y
CONFIG_USB_DWC2=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_GADGET=y
CONFIG_USB_GADGET_DWC2_OTG=y
CONFIG_USB_GADGET_DOWNLOAD=y
diff --git a/configs/mx6cuboxi_defconfig b/configs/mx6cuboxi_defconfig
index 5490e3546b..27171fbddf 100644
--- a/configs/mx6cuboxi_defconfig
+++ b/configs/mx6cuboxi_defconfig
@@ -34,6 +34,5 @@ CONFIG_DM_THERMAL=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
# CONFIG_VIDEO_SW_CURSOR is not set
CONFIG_OF_LIBFDT=y
diff --git a/configs/rpi_2_defconfig b/configs/rpi_2_defconfig
index 2345697701..03705975bf 100644
--- a/configs/rpi_2_defconfig
+++ b/configs/rpi_2_defconfig
@@ -26,7 +26,6 @@ CONFIG_DM_USB=y
CONFIG_USB_DWC2=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_HOST_ETHER=y
CONFIG_USB_ETHER_SMSC95XX=y
CONFIG_DM_VIDEO=y
diff --git a/configs/rpi_3_32b_defconfig b/configs/rpi_3_32b_defconfig
index bb56a9e4e1..31d67ccdc9 100644
--- a/configs/rpi_3_32b_defconfig
+++ b/configs/rpi_3_32b_defconfig
@@ -28,7 +28,6 @@ CONFIG_DM_USB=y
CONFIG_USB_DWC2=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_HOST_ETHER=y
CONFIG_USB_ETHER_SMSC95XX=y
CONFIG_DM_VIDEO=y
diff --git a/configs/rpi_3_defconfig b/configs/rpi_3_defconfig
index 6edacd69a2..1ac3a96e25 100644
--- a/configs/rpi_3_defconfig
+++ b/configs/rpi_3_defconfig
@@ -28,7 +28,6 @@ CONFIG_DM_USB=y
CONFIG_USB_DWC2=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_HOST_ETHER=y
CONFIG_USB_ETHER_SMSC95XX=y
CONFIG_DM_VIDEO=y
diff --git a/configs/rpi_defconfig b/configs/rpi_defconfig
index 2e81966c14..87e88223ee 100644
--- a/configs/rpi_defconfig
+++ b/configs/rpi_defconfig
@@ -26,7 +26,6 @@ CONFIG_DM_USB=y
CONFIG_USB_DWC2=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_HOST_ETHER=y
CONFIG_USB_ETHER_SMSC95XX=y
CONFIG_DM_VIDEO=y
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 310b8acc29..632e0aa0ee 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -175,7 +175,6 @@ CONFIG_DM_USB=y
CONFIG_USB_EMUL=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_DM_VIDEO=y
CONFIG_CONSOLE_ROTATION=y
CONFIG_CONSOLE_TRUETYPE=y
diff --git a/configs/sandbox_flattree_defconfig b/configs/sandbox_flattree_defconfig
index 50ea35e64b..b1a341551f 100644
--- a/configs/sandbox_flattree_defconfig
+++ b/configs/sandbox_flattree_defconfig
@@ -160,7 +160,6 @@ CONFIG_DM_USB=y
CONFIG_USB_EMUL=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_DM_VIDEO=y
CONFIG_CONSOLE_ROTATION=y
CONFIG_CONSOLE_TRUETYPE=y
diff --git a/configs/sandbox_noblk_defconfig b/configs/sandbox_noblk_defconfig
index 693c14bc60..39101741b1 100644
--- a/configs/sandbox_noblk_defconfig
+++ b/configs/sandbox_noblk_defconfig
@@ -168,7 +168,6 @@ CONFIG_DM_USB=y
CONFIG_USB_EMUL=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_DM_VIDEO=y
CONFIG_CONSOLE_ROTATION=y
CONFIG_CONSOLE_TRUETYPE=y
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index db9129456b..7f03c6ed03 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -178,7 +178,6 @@ CONFIG_DM_USB=y
CONFIG_USB_EMUL=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_DM_VIDEO=y
CONFIG_CONSOLE_ROTATION=y
CONFIG_CONSOLE_TRUETYPE=y
diff --git a/configs/seaboard_defconfig b/configs/seaboard_defconfig
index ea4546bce4..810cfaa498 100644
--- a/configs/seaboard_defconfig
+++ b/configs/seaboard_defconfig
@@ -36,7 +36,6 @@ CONFIG_USB_ULPI_VIEWPORT=y
CONFIG_USB_ULPI=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_HOST_ETHER=y
CONFIG_USB_ETHER_ASIX=y
CONFIG_DM_VIDEO=y
diff --git a/configs/ventana_defconfig b/configs/ventana_defconfig
index 42353f034e..b11dab1196 100644
--- a/configs/ventana_defconfig
+++ b/configs/ventana_defconfig
@@ -34,7 +34,6 @@ CONFIG_USB_ULPI_VIEWPORT=y
CONFIG_USB_ULPI=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
-CONFIG_SYS_USB_EVENT_POLL=y
CONFIG_USB_HOST_ETHER=y
CONFIG_USB_ETHER_ASIX=y
CONFIG_DM_VIDEO=y
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 62126aad2f..e7658b4d95 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -75,7 +75,7 @@ if USB_KEYBOARD
choice
prompt "USB keyboard polling"
- optional
+ default SYS_USB_EVENT_POLL
---help---
Enable a polling mechanism for USB keyboard.
diff --git a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
index 0d6d2fba8a..b6164afa92 100644
--- a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
+++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
@@ -111,7 +111,8 @@ static int setdma_rx(struct dwc2_ep *ep, struct dwc2_request *req)
ctrl = readl(®->out_endp[ep_num].doepctl);
invalidate_dcache_range((unsigned long) ep->dma_buf,
- (unsigned long) ep->dma_buf + ep->len);
+ (unsigned long) ep->dma_buf +
+ ROUND(ep->len, CONFIG_SYS_CACHELINE_SIZE));
writel((unsigned int) ep->dma_buf, ®->out_endp[ep_num].doepdma);
writel(DOEPT_SIZ_PKT_CNT(pktcnt) | DOEPT_SIZ_XFER_SIZE(length),
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c
index 64c42ac471..0ed72d5ae7 100644
--- a/drivers/usb/host/dwc2.c
+++ b/drivers/usb/host/dwc2.c
@@ -1245,7 +1245,7 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev)
struct dwc2_priv *priv = dev_get_priv(dev);
fdt_addr_t addr;
- addr = devfdt_get_addr(dev);
+ addr = dev_read_addr(dev);
if (addr == FDT_ADDR_T_NONE)
return -EINVAL;
priv->regs = (struct dwc2_core_regs *)addr;
diff --git a/drivers/usb/host/ehci-generic.c b/drivers/usb/host/ehci-generic.c
index 03f8d321af..18e1e0ee88 100644
--- a/drivers/usb/host/ehci-generic.c
+++ b/drivers/usb/host/ehci-generic.c
@@ -108,7 +108,7 @@ static int ehci_usb_probe(struct udevice *dev)
}
}
- hccr = map_physmem(devfdt_get_addr(dev), 0x100, MAP_NOCACHE);
+ hccr = map_physmem(dev_read_addr(dev), 0x100, MAP_NOCACHE);
hcor = (struct ehci_hcor *)((uintptr_t)hccr +
HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 3243c1d1cf..be3e842dcc 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1596,6 +1596,17 @@ static int ehci_destroy_int_queue(struct udevice *dev, struct usb_device *udev,
return _ehci_destroy_int_queue(udev, queue);
}
+static int ehci_get_max_xfer_size(struct udevice *dev, size_t *size)
+{
+ /*
+ * EHCD can handle any transfer length as long as there is enough
+ * free heap space left, hence set the theoretical max number here.
+ */
+ *size = SIZE_MAX;
+
+ return 0;
+}
+
int ehci_register(struct udevice *dev, struct ehci_hccr *hccr,
struct ehci_hcor *hcor, const struct ehci_ops *ops,
uint tweaks, enum usb_init_type init)
@@ -1658,6 +1669,7 @@ struct dm_usb_ops ehci_usb_ops = {
.create_int_queue = ehci_create_int_queue,
.poll_int_queue = ehci_poll_int_queue,
.destroy_int_queue = ehci_destroy_int_queue,
+ .get_max_xfer_size = ehci_get_max_xfer_size,
};
#endif
diff --git a/drivers/usb/host/usb-uclass.c b/drivers/usb/host/usb-uclass.c
index 0b8a501ce8..bc44fc3394 100644
--- a/drivers/usb/host/usb-uclass.c
+++ b/drivers/usb/host/usb-uclass.c
@@ -150,6 +150,17 @@ int usb_update_hub_device(struct usb_device *udev)
return ops->update_hub_device(bus, udev);
}
+int usb_get_max_xfer_size(struct usb_device *udev, size_t *size)
+{
+ struct udevice *bus = udev->controller_dev;
+ struct dm_usb_ops *ops = usb_get_ops(bus);
+
+ if (!ops->get_max_xfer_size)
+ return -ENOSYS;
+
+ return ops->get_max_xfer_size(bus, size);
+}
+
int usb_stop(void)
{
struct udevice *bus;
diff --git a/drivers/usb/host/xhci-rockchip.c b/drivers/usb/host/xhci-rockchip.c
index ec55f4e59f..ca3abffba0 100644
--- a/drivers/usb/host/xhci-rockchip.c
+++ b/drivers/usb/host/xhci-rockchip.c
@@ -6,8 +6,6 @@
*/
#include <common.h>
#include <dm.h>
-#include <fdtdec.h>
-#include <libfdt.h>
#include <malloc.h>
#include <usb.h>
#include <watchdog.h>
@@ -46,7 +44,7 @@ static int xhci_usb_ofdata_to_platdata(struct udevice *dev)
/*
* Get the base address for XHCI controller from the device node
*/
- plat->hcd_base = devfdt_get_addr(dev);
+ plat->hcd_base = dev_read_addr(dev);
if (plat->hcd_base == FDT_ADDR_T_NONE) {
error("Can't get the XHCI register base address\n");
return -ENXIO;
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 9b82ee5c60..04eb1eb14d 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -1228,6 +1228,20 @@ static int xhci_update_hub_device(struct udevice *dev, struct usb_device *udev)
return xhci_configure_endpoints(udev, false);
}
+static int xhci_get_max_xfer_size(struct udevice *dev, size_t *size)
+{
+ /*
+ * xHCD allocates one segment which includes 64 TRBs for each endpoint
+ * and the last TRB in this segment is configured as a link TRB to form
+ * a TRB ring. Each TRB can transfer up to 64K bytes, however data
+ * buffers referenced by transfer TRBs shall not span 64KB boundaries.
+ * Hence the maximum number of TRBs we can use in one transfer is 62.
+ */
+ *size = (TRBS_PER_SEGMENT - 2) * TRB_MAX_BUFF_SIZE;
+
+ return 0;
+}
+
int xhci_register(struct udevice *dev, struct xhci_hccr *hccr,
struct xhci_hcor *hcor)
{
@@ -1281,6 +1295,7 @@ struct dm_usb_ops xhci_usb_ops = {
.interrupt = xhci_submit_int_msg,
.alloc_device = xhci_alloc_device,
.update_hub_device = xhci_update_hub_device,
+ .get_max_xfer_size = xhci_get_max_xfer_size,
};
#endif
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index a497d9d830..3377450fca 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1045,9 +1045,9 @@ struct xhci_scratchpad {
* (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,
* meaning 64 ring segments.
* Initial allocated size of the ERST, in number of entries */
-#define ERST_NUM_SEGS 3
+#define ERST_NUM_SEGS 1
/* Initial number of event segment rings allocated */
-#define ERST_ENTRIES 3
+#define ERST_ENTRIES 1
/* Initial allocated size of the ERST, in number of entries */
#define ERST_SIZE 64
/* Poll every 60 seconds */
diff --git a/include/usb.h b/include/usb.h
index fad04016a3..0ddc0822b4 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -766,6 +766,14 @@ struct dm_usb_ops {
* representation of this hub can be updated (xHCI)
*/
int (*update_hub_device)(struct udevice *bus, struct usb_device *udev);
+
+ /**
+ * get_max_xfer_size() - Get HCD's maximum transfer bytes
+ *
+ * The HCD may have limitation on the maximum bytes to be transferred
+ * in a USB transfer. USB class driver needs to be aware of this.
+ */
+ int (*get_max_xfer_size)(struct udevice *bus, size_t *size);
};
#define usb_get_ops(dev) ((struct dm_usb_ops *)(dev)->driver->ops)
@@ -939,7 +947,7 @@ int usb_new_device(struct usb_device *dev);
int usb_alloc_device(struct usb_device *dev);
/**
- * update_hub_device() - Update HCD's internal representation of hub
+ * usb_update_hub_device() - Update HCD's internal representation of hub
*
* After a hub descriptor is fetched, notify HCD so that its internal
* representation of this hub can be updated.
@@ -949,6 +957,18 @@ int usb_alloc_device(struct usb_device *dev);
*/
int usb_update_hub_device(struct usb_device *dev);
+/**
+ * usb_get_max_xfer_size() - Get HCD's maximum transfer bytes
+ *
+ * The HCD may have limitation on the maximum bytes to be transferred
+ * in a USB transfer. USB class driver needs to be aware of this.
+ *
+ * @dev: USB device
+ * @size: maximum transfer bytes
+ * @return 0 if OK, -ve on error
+ */
+int usb_get_max_xfer_size(struct usb_device *dev, size_t *size);
+
/**
* usb_emul_setup_device() - Set up a new USB device emulation
*