[PATCH 4/6] Platform support MSP onchip USB controller.

From: Anoop P.A
Date: Tue Jan 25 2011 - 03:06:01 EST

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From: Anoop P A <anoop.pa@xxxxxxxxx>

Following patch add platform support for onchip USB controller.

Signed-off-by: Anoop P A <anoop.pa@xxxxxxxxx>
---
.../mips/include/asm/pmc-sierra/msp71xx/msp_regs.h | 17 +-
arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h | 144 ++++++++++++
arch/mips/pmc-sierra/Kconfig | 5 +
arch/mips/pmc-sierra/msp71xx/Makefile | 2 +-
arch/mips/pmc-sierra/msp71xx/msp_usb.c | 239 ++++++++++++++-----
5 files changed, 335 insertions(+), 72 deletions(-)
create mode 100644 arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h

diff --git a/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h
index 603eb73..692c1b6 100644
--- a/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h
+++ b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_regs.h
@@ -91,12 +91,10 @@
/* MAC C device registers */
#define MSP_ADSL2_BASE (MSP_MSB_BASE + 0xA80000)
/* ADSL2 device registers */
-#define MSP_USB_BASE (MSP_MSB_BASE + 0xB40000)
- /* USB device registers */
-#define MSP_USB_BASE_START (MSP_MSB_BASE + 0xB40100)
- /* USB device registers */
-#define MSP_USB_BASE_END (MSP_MSB_BASE + 0xB401FF)
- /* USB device registers */
+#define MSP_USB0_BASE (MSP_MSB_BASE + 0xB00000)
+ /* USB0 device registers */
+#define MSP_USB1_BASE (MSP_MSB_BASE + 0x300000)
+ /* USB1 device registers */
#define MSP_CPUIF_BASE (MSP_MSB_BASE + 0xC00000)
/* CPU interface registers */

@@ -319,8 +317,11 @@
#define CPU_ERR2_REG regptr(MSP_SLP_BASE + 0x184)
/* CPU/SLP Error status 1 */

-#define EXTENDED_GPIO_REG regptr(MSP_SLP_BASE + 0x188)
- /* Extended GPIO register */
+/* Extended GPIO registers */
+#define EXTENDED_GPIO1_REG regptr(MSP_SLP_BASE + 0x188)
+#define EXTENDED_GPIO2_REG regptr(MSP_SLP_BASE + 0x18c)
+#define EXTENDED_GPIO_REG EXTENDED_GPIO1_REG
+ /* Backward-compatibility */

/* System Error registers */
#define SLP_ERR_STS_REG regptr(MSP_SLP_BASE + 0x190)
diff --git a/arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h
new file mode 100644
index 0000000..4c9348d
--- /dev/null
+++ b/arch/mips/include/asm/pmc-sierra/msp71xx/msp_usb.h
@@ -0,0 +1,144 @@
+/******************************************************************
+ * Copyright (c) 2000-2007 PMC-Sierra INC.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
+ * 02139, USA.
+ *
+ * PMC-SIERRA INC. DISCLAIMS ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
+ * SOFTWARE.
+ */
+#ifndef MSP_USB_H_
+#define MSP_USB_H_
+
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+#define NUM_USB_DEVS 2
+#else
+#define NUM_USB_DEVS 1
+#endif
+
+/* Register spaces for USB host 0 */
+#define MSP_USB0_MAB_START (MSP_USB0_BASE + 0x0)
+#define MSP_USB0_MAB_END (MSP_USB0_BASE + 0x17)
+#define MSP_USB0_ID_START (MSP_USB0_BASE + 0x40000)
+#define MSP_USB0_ID_END (MSP_USB0_BASE + 0x4008f)
+#define MSP_USB0_HS_START (MSP_USB0_BASE + 0x40100)
+#define MSP_USB0_HS_END (MSP_USB0_BASE + 0x401FF)
+
+/* Register spaces for USB host 1 */
+#define MSP_USB1_MAB_START (MSP_USB1_BASE + 0x0)
+#define MSP_USB1_MAB_END (MSP_USB1_BASE + 0x17)
+#define MSP_USB1_ID_START (MSP_USB1_BASE + 0x40000)
+#define MSP_USB1_ID_END (MSP_USB1_BASE + 0x4008f)
+#define MSP_USB1_HS_START (MSP_USB1_BASE + 0x40100)
+#define MSP_USB1_HS_END (MSP_USB1_BASE + 0x401ff)
+
+/* USB Identification registers */
+struct msp_usbid_regs {
+ u32 id; /* 0x0: Identification register */
+ u32 hwgen; /* 0x4: General HW params */
+ u32 hwhost; /* 0x8: Host HW params */
+ u32 hwdev; /* 0xc: Device HW params */
+ u32 hwtxbuf; /* 0x10: Tx buffer HW params */
+ u32 hwrxbuf; /* 0x14: Rx buffer HW params */
+ u32 reserved[26];
+ u32 timer0_load; /* 0x80: General-purpose timer 0 load*/
+ u32 timer0_ctrl; /* 0x84: General-purpose timer 0 control */
+ u32 timer1_load; /* 0x88: General-purpose timer 1 load*/
+ u32 timer1_ctrl; /* 0x8c: General-purpose timer 1 control */
+};
+
+/* MSBus to AMBA registers */
+struct msp_mab_regs {
+ u32 isr; /* 0x0: Interrupt status */
+ u32 imr; /* 0x4: Interrupt mask */
+ u32 thcr0; /* 0x8: Transaction header capture 0 */
+ u32 thcr1; /* 0xc: Transaction header capture 1 */
+ u32 int_stat; /* 0x10: Interrupt status summary */
+ u32 phy_cfg; /* 0x14: USB phy config */
+};
+
+/* EHCI registers */
+struct msp_usbhs_regs {
+ u32 hciver; /* 0x0: Version and offset to operational regs */
+ u32 hcsparams; /* 0x4: Host control structural parameters */
+ u32 hccparams; /* 0x8: Host control capability parameters */
+ u32 reserved0[5];
+ u32 dciver; /* 0x20: Device interface version */
+ u32 dccparams; /* 0x24: Device control capability parameters */
+ u32 reserved1[6];
+ u32 cmd; /* 0x40: USB command */
+ u32 sts; /* 0x44: USB status */
+ u32 int_ena; /* 0x48: USB interrupt enable */
+ u32 frindex; /* 0x4c: Frame index */
+ u32 reserved3;
+ union {
+ struct {
+ u32 flb_addr; /* 0x54: Frame list base address */
+ u32 next_async_addr; /* 0x58: next asynchronous addr */
+ u32 ttctrl; /* 0x5c: embedded transaction translator
+ async buffer status */
+ u32 burst_size; /* 0x60: Controller burst size */
+ u32 tx_fifo_ctrl; /* 0x64: Tx latency FIFO tuning */
+ u32 reserved0[4];
+ u32 endpt_nak; /* 0x78: Endpoint NAK */
+ u32 endpt_nak_ena; /* 0x7c: Endpoint NAK enable */
+ u32 cfg_flag; /* 0x80: Config flag */
+ u32 port_sc1; /* 0x84: Port status & control 1 */
+ u32 reserved1[7];
+ u32 otgsc; /* 0xa4: OTG status & control */
+ u32 mode; /* 0xa8: USB controller mode */
+ } host;
+
+ struct {
+ u32 dev_addr; /* 0x54: Device address */
+ u32 endpt_list_addr; /* 0x58: Endpoint list address */
+ u32 reserved0[7];
+ u32 endpt_nak; /* 0x74 */
+ u32 endpt_nak_ctrl; /* 0x78 */
+ u32 cfg_flag; /* 0x80 */
+ u32 port_sc1; /* 0x84: Port status & control 1 */
+ u32 reserved[7];
+ u32 otgsc; /* 0xa4: OTG status & control */
+ u32 mode; /* 0xa8: USB controller mode */
+ u32 endpt_setup_stat; /* 0xac */
+ u32 endpt_prime; /* 0xb0 */
+ u32 endpt_flush; /* 0xb4 */
+ u32 endpt_stat; /* 0xb8 */
+ u32 endpt_complete; /* 0xbc */
+ u32 endpt_ctrl0; /* 0xc0 */
+ u32 endpt_ctrl1; /* 0xc4 */
+ u32 endpt_ctrl2; /* 0xc8 */
+ u32 endpt_ctrl3; /* 0xcc */
+ } device;
+ } u;
+};
+/*
+ * Container for the more-generic platform_device.
+ * This exists mainly as a way to map the non-standard register
+ * spaces and make them accessible to the USB ISR.
+ */
+struct mspusb_device {
+ struct msp_mab_regs __iomem *mab_regs;
+ struct msp_usbid_regs __iomem *usbid_regs;
+ struct msp_usbhs_regs __iomem *usbhs_regs;
+ struct platform_device dev;
+};
+
+#define to_mspusb_device(x) container_of((x), struct mspusb_device, dev)
+#define TO_HOST_ID(x) ((x) & 0x3)
+#endif /*MSP_USB_H_*/
diff --git a/arch/mips/pmc-sierra/Kconfig b/arch/mips/pmc-sierra/Kconfig
index c139988..af41cda 100644
--- a/arch/mips/pmc-sierra/Kconfig
+++ b/arch/mips/pmc-sierra/Kconfig
@@ -27,6 +27,7 @@ config PMC_MSP7120_GW
select SYS_SUPPORTS_MULTITHREADING
select IRQ_MSP_CIC
select HW_HAS_PCI
+ select MSP_HAS_USB

config PMC_MSP7120_FPGA
bool "PMC-Sierra MSP7120 FPGA"
@@ -39,3 +40,7 @@ endchoice
config HYPERTRANSPORT
bool "Hypertransport Support for PMC-Sierra Yosemite"
depends on PMC_YOSEMITE
+
+config MSP_HAS_USB
+ boolean
+ depends on PMC_MSP
diff --git a/arch/mips/pmc-sierra/msp71xx/Makefile b/arch/mips/pmc-sierra/msp71xx/Makefile
index a002fa2..f26cab3 100644
--- a/arch/mips/pmc-sierra/msp71xx/Makefile
+++ b/arch/mips/pmc-sierra/msp71xx/Makefile
@@ -9,6 +9,6 @@ obj-$(CONFIG_IRQ_MSP_SLP) += msp_irq_slp.o
obj-$(CONFIG_IRQ_MSP_CIC) += msp_irq_cic.o msp_irq_per.o
obj-$(CONFIG_PCI) += msp_pci.o
obj-$(CONFIG_MSPETH) += msp_eth.o
-obj-$(CONFIG_USB_MSP71XX) += msp_usb.o
+obj-$(CONFIG_MSP_HAS_USB) += msp_usb.o
obj-$(CONFIG_MIPS_MT_SMP) += msp_smp.o
obj-$(CONFIG_MIPS_MT_SMTC) += msp_smtc.o
diff --git a/arch/mips/pmc-sierra/msp71xx/msp_usb.c b/arch/mips/pmc-sierra/msp71xx/msp_usb.c
index 0ee01e3..9a1aef8 100644
--- a/arch/mips/pmc-sierra/msp71xx/msp_usb.c
+++ b/arch/mips/pmc-sierra/msp71xx/msp_usb.c
@@ -1,7 +1,7 @@
/*
* The setup file for USB related hardware on PMC-Sierra MSP processors.
*
- * Copyright 2006-2007 PMC-Sierra, Inc.
+ * Copyright 2006 PMC-Sierra, Inc.
*
* 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
@@ -23,8 +23,8 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET)

-#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
@@ -34,40 +34,56 @@
#include <msp_regs.h>
#include <msp_int.h>
#include <msp_prom.h>
+#include <msp_usb.h>
+

#if defined(CONFIG_USB_EHCI_HCD)
-static struct resource msp_usbhost_resources [] = {
- [0] = {
- .start = MSP_USB_BASE_START,
- .end = MSP_USB_BASE_END,
- .flags = IORESOURCE_MEM,
+static struct resource msp_usbhost0_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB0_HS_START,
+ .end = MSP_USB0_HS_END,
+ .flags = IORESOURCE_MEM,
},
[1] = {
- .start = MSP_INT_USB,
- .end = MSP_INT_USB,
- .flags = IORESOURCE_IRQ,
+ .start = MSP_INT_USB,
+ .end = MSP_INT_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB0_MAB_START,
+ .end = MSP_USB0_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB0_ID_START,
+ .end = MSP_USB0_ID_END,
+ .flags = IORESOURCE_MEM,
},
};

-static u64 msp_usbhost_dma_mask = DMA_BIT_MASK(32);
+static u64 msp_usbhost0_dma_mask = 0xffffffffUL;

-static struct platform_device msp_usbhost_device = {
- .name = "pmcmsp-ehci",
- .id = 0,
+static struct mspusb_device msp_usbhost0_device = {
.dev = {
- .dma_mask = &msp_usbhost_dma_mask,
- .coherent_dma_mask = DMA_BIT_MASK(32),
+ .name = "pmcmsp-ehci",
+ .id = 0,
+ .dev = {
+ .dma_mask = &msp_usbhost0_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbhost0_resources),
+ .resource = msp_usbhost0_resources,
},
- .num_resources = ARRAY_SIZE(msp_usbhost_resources),
- .resource = msp_usbhost_resources,
};
-#endif /* CONFIG_USB_EHCI_HCD */

-#if defined(CONFIG_USB_GADGET)
-static struct resource msp_usbdev_resources [] = {
- [0] = {
- .start = MSP_USB_BASE,
- .end = MSP_USB_BASE_END,
+/* MSP7140/MSP82XX has two USB2 hosts. */
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+static u64 msp_usbhost1_dma_mask = 0xffffffffUL;
+
+static struct resource msp_usbhost1_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB1_HS_START,
+ .end = MSP_USB1_HS_END,
.flags = IORESOURCE_MEM,
},
[1] = {
@@ -75,76 +91,173 @@ static struct resource msp_usbdev_resources [] = {
.end = MSP_INT_USB,
.flags = IORESOURCE_IRQ,
},
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB1_MAB_START,
+ .end = MSP_USB1_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB1_ID_START,
+ .end = MSP_USB1_ID_END,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct mspusb_device msp_usbhost1_device = {
+ .dev = {
+ .name = "pmcmsp-ehci",
+ .id = 1,
+ .dev = {
+ .dma_mask = &msp_usbhost1_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbhost1_resources),
+ .resource = msp_usbhost1_resources,
+ },
};
+#endif /* CONFIG_MSP_HAS_DUAL_USB */
+#endif /* CONFIG_USB_EHCI_HCD */

-static u64 msp_usbdev_dma_mask = DMA_BIT_MASK(32);
+#if defined(CONFIG_USB_GADGET)
+static struct resource msp_usbdev0_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB0_HS_START,
+ .end = MSP_USB0_HS_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = MSP_INT_USB,
+ .end = MSP_INT_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB0_MAB_START,
+ .end = MSP_USB0_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB0_ID_START,
+ .end = MSP_USB0_ID_END,
+ .flags = IORESOURCE_MEM,
+ },
+};

-static struct platform_device msp_usbdev_device = {
- .name = "msp71xx_udc",
- .id = 0,
+static u64 msp_usbdev_dma_mask = 0xffffffffUL;
+
+/* This may need to be converted to a mspusb_device, too. */
+static struct mspusb_device msp_usbdev0_device = {
.dev = {
- .dma_mask = &msp_usbdev_dma_mask,
- .coherent_dma_mask = DMA_BIT_MASK(32),
+ .name = "msp71xx_udc",
+ .id = 0,
+ .dev = {
+ .dma_mask = &msp_usbdev_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbdev0_resources),
+ .resource = msp_usbdev0_resources,
},
- .num_resources = ARRAY_SIZE(msp_usbdev_resources),
- .resource = msp_usbdev_resources,
};
-#endif /* CONFIG_USB_GADGET */

-#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET)
-static struct platform_device *msp_devs[1];
-#endif
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+static struct resource msp_usbdev1_resources[] = {
+ [0] = { /* EHCI-HS operational and capabilities registers */
+ .start = MSP_USB1_HS_START,
+ .end = MSP_USB1_HS_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = MSP_INT_USB,
+ .end = MSP_INT_USB,
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = { /* MSBus-to-AMBA bridge register space */
+ .start = MSP_USB1_MAB_START,
+ .end = MSP_USB1_MAB_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [3] = { /* Identification and general hardware parameters */
+ .start = MSP_USB1_ID_START,
+ .end = MSP_USB1_ID_END,
+ .flags = IORESOURCE_MEM,
+ },
+};

+/* This may need to be converted to a mspusb_device, too. */
+static struct mspusb_device msp_usbdev1_device = {
+ .dev = {
+ .name = "msp71xx_udc",
+ .id = 0,
+ .dev = {
+ .dma_mask = &msp_usbdev_dma_mask,
+ .coherent_dma_mask = 0xffffffffUL,
+ },
+ .num_resources = ARRAY_SIZE(msp_usbdev1_resources),
+ .resource = msp_usbdev1_resources,
+ },
+};
+
+#endif /* CONFIG_MSP_HAS_DUAL_USB */
+#endif /* CONFIG_USB_GADGET */

static int __init msp_usb_setup(void)
{
-#if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_GADGET)
- char *strp;
- char envstr[32];
- unsigned int val = 0;
- int result = 0;
+ char *strp;
+ char envstr[32];
+ struct platform_device *msp_devs[NUM_USB_DEVS];
+ unsigned int val;

+ /* construct environment name usbmode */
+ /* set usbmode <host/device> as pmon environment var */
/*
- * construct environment name usbmode
- * set usbmode <host/device> as pmon environment var
+ * Could this perhaps be integrated into the "features" env var?
+ * Use the features key "U", and follow with "H" for host-mode,
+ * "D" for device-mode. If it works for Ethernet, why not USB...
+ * -- hammtrev, 2007/03/22
*/
snprintf((char *)&envstr[0], sizeof(envstr), "usbmode");

-#if defined(CONFIG_USB_EHCI_HCD)
- /* default to host mode */
+ /* set default host mode */
val = 1;
-#endif

/* get environment string */
strp = prom_getenv((char *)&envstr[0]);
if (strp) {
+ /* compare string */
if (!strcmp(strp, "device"))
val = 0;
}

if (val) {
#if defined(CONFIG_USB_EHCI_HCD)
- /* get host mode device */
- msp_devs[0] = &msp_usbhost_device;
- ppfinit("platform add USB HOST done %s.\n",
- msp_devs[0]->name);
-
- result = platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));
-#endif /* CONFIG_USB_EHCI_HCD */
- }
+ msp_devs[0] = &msp_usbhost0_device.dev;
+ ppfinit("platform add USB HOST done %s.\n", msp_devs[0]->name);
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ msp_devs[1] = &msp_usbhost1_device.dev;
+ ppfinit("platform add USB HOST done %s.\n", msp_devs[1]->name);
+#endif
+#else
+ ppfinit("%s: echi_hcd not supported\n", __FILE__);
+#endif /* CONFIG_USB_EHCI_HCD */
+ } else {
#if defined(CONFIG_USB_GADGET)
- else {
/* get device mode structure */
- msp_devs[0] = &msp_usbdev_device;
- ppfinit("platform add USB DEVICE done %s.\n",
- msp_devs[0]->name);
-
- result = platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));
+ msp_devs[0] = &msp_usbdev0_device.dev;
+ ppfinit("platform add USB DEVICE done %s.\n"
+ , msp_devs[0]->name);
+#ifdef CONFIG_MSP_HAS_DUAL_USB
+ msp_devs[1] = &msp_usbdev1_device.dev;
+ ppfinit("platform add USB DEVICE done %s.\n"
+ , msp_devs[1]->name);
+#endif
+#else
+ ppfinit("%s: usb_gadget not supported\n", __FILE__);
+#endif /* CONFIG_USB_GADGET */
}
-#endif /* CONFIG_USB_GADGET */
-#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */
+ /* add device */
+ platform_add_devices(msp_devs, ARRAY_SIZE(msp_devs));

- return result;
+ return 0;
}

subsys_initcall(msp_usb_setup);
+#endif /* CONFIG_USB_EHCI_HCD || CONFIG_USB_GADGET */
--
1.7.0.4

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Next message: Anoop P.A: "[PATCH 5/6] Platform support for On-chip MSP ethernet devices."
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