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* RE: [PATCH v6 0/3] mailbox: Add APM X-Gene platform mailbox driver
@ 2016-02-13  4:56 Itaru Kitayama
  2016-02-13  5:52 ` Duc Dang
  0 siblings, 1 reply; 8+ messages in thread
From: Itaru Kitayama @ 2016-02-13  4:56 UTC (permalink / raw)
  To: linux-kernel

Hi Duc,

I've been testing your patch set for v4.5-rc1 on Mustang, with ACPI, 
however the boot hangs in the middle of it:

EFI stub: Booting Linux Kernel...
EFI stub: Using DTB from configuration table
EFI stub: Exiting boot services and installing virtual address map...
L3c Cache: 8MB
Booting Linux on physical CPU 0x0
Linux version 4.5.0-rc1+ (itaru.kitayama@r2-a21) (gcc version 5.3.1 
20151207 (Red Hat 5.3.1-2) (GCC) ) #96 SMP PREEMPT Fri Feb 12 22:43:54 
CST 2016
Boot CPU: AArch64 Processor [500f0001]
earlycon: Early serial console at MMIO32 0x1c020000 (options '')
bootconsole [uart0] enabled
efi: Getting EFI parameters from FDT:
EFI v2.40 by X-Gene Mustang Board EFI Nov 24 2015 13:22:41
efi:  ACPI=0x47fa869000  ACPI 2.0=0x47fa869014  SMBIOS 3.0=0x47fa867000
cma: Reserved 512 MiB at 0x00000040e0000000
ACPI: Early table checksum verification disabled
ACPI: RSDP 0x00000047FA869014 000024 (v02 APM   )
ACPI: XSDT 0x00000047FA8680E8 00006C (v01 APM    XGENE    00000003 
01000013)
ACPI: FACP 0x00000047FA85F000 00010C (v05 APM    XGENE    00000003 INTL 
20140724)
ACPI: DSDT 0x00000047FA860000 00495F (v05 APM    APM88xxx 00000001 INTL 
20140724)
ACPI: DBG2 0x00000047FA865000 0000AA (v00 APMC0D XGENEDBG 00000000 INTL 
20140724)
ACPI: GTDT 0x00000047FA85D000 0000E0 (v02 APM    XGENE    00000001 INTL 
20140724)
ACPI: MCFG 0x00000047FA85C000 00003C (v01 APM    XGENE    00000002 INTL 
20140724)
ACPI: SPCR 0x00000047FA85B000 000050 (v02 APMC0D XGENESPC 00000000 INTL 
20140724)
ACPI: SSDT 0x00000047FA85A000 00002D (v02 APM    XGENE    00000001 INTL 
20140724)
ACPI: APIC 0x00000047FA859000 0002A4 (v03 APM    XGENE    00000003 
01000013)
ACPI: SSDT 0x00000047FA858000 000078 (v02 REDHAT MACADDRS 00000001 
01000013)
ACPI: SSDT 0x00000047FA857000 000032 (v02 REDHAT UARTCLKS 00000001 
01000013)
psci: is not implemented in ACPI.
Unsupported ACPI enable-method
Unsupported ACPI enable-method
Unsupported ACPI enable-method
Unsupported ACPI enable-method
Unsupported ACPI enable-method
Unsupported ACPI enable-method
Unsupported ACPI enable-method
Unsupported ACPI enable-method
PERCPU: Embedded 2 pages/cpu @fffffe07fff90000 s41472 r8192 d81408 u131072
Detected PIPT I-cache on CPU0
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 523776
Kernel command line: BOOT_IMAGE=/vmlinuz-4.5.0-rc1+ 
root=UUID=0e305934-49d5-4f66-b10b-23ec6029fab9 ro acpi=force 
earlycon=uart8250,mmio32,0x1c020000 console=ttyS0,115200 LANG=en_US.UTF-8
PID hash table entries: 4096 (order: -1, 32768 bytes)
Dentry cache hash table entries: 4194304 (order: 9, 33554432 bytes)
Inode-cache hash table entries: 2097152 (order: 8, 16777216 bytes)
software IO TLB [mem 0x40dbff0000-0x40dfff0000] (64MB) mapped at 
[fffffe00dbff0000-fffffe00dffeffff]
Memory: 32856256K/33554432K available (6158K kernel code, 725K rwdata, 
4032K rodata, 768K init, 399K bss, 173888K reserved, 524288K cma-reserved)
Virtual kernel memory layout:
     vmalloc : 0xfffffc0000000000 - 0xfffffdfedfff0000   (  2043 GB)
     vmemmap : 0xfffffdfee0000000 - 0xfffffdffe0000000   (     4 GB maximum)
               0xfffffdfef0000000 - 0xfffffdfef2000000   (    32 MB actual)
     fixed   : 0xfffffdfffa7d0000 - 0xfffffdfffac00000   (  4288 KB)
     PCI I/O : 0xfffffdfffae00000 - 0xfffffdfffbe00000   (    16 MB)
     modules : 0xfffffdfffc000000 - 0xfffffe0000000000   (    64 MB)
     memory  : 0xfffffe0000000000 - 0xfffffe0800000000   ( 32768 MB)
       .init : 0xfffffe0000a80000 - 0xfffffe0000b40000   (   768 KB)
       .text : 0xfffffe0000080000 - 0xfffffe0000a75b44   ( 10199 KB)
       .data : 0xfffffe0000b40000 - 0xfffffe0000bf5400   (   725 KB)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptible hierarchical RCU implementation.
	Build-time adjustment of leaf fanout to 64.
	RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=1.
RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=1
NR_IRQS:64 nr_irqs:64 0
GIC: Using split EOI/Deactivate mode
Architected cp15 timer(s) running at 50.00MHz (phys).
clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 
0xb8812736b, max_idle_ns: 440795202655 ns
sched_clock: 56 bits at 50MHz, resolution 20ns, wraps every 4398046511100ns
Console: colour dummy device 80x25
Calibrating delay loop (skipped), value calculated using timer 
frequency.. 100.00 BogoMIPS (lpj=200000)
pid_max: default: 32768 minimum: 301
ACPI: Core revision 20160108
ACPI: 4 ACPI AML tables successfully acquired and loaded

Security Framework initialized
Mount-cache hash table entries: 65536 (order: 3, 524288 bytes)
Mountpoint-cache hash table entries: 65536 (order: 3, 524288 bytes)
ASID allocator initialised with 65536 entries

Is the patch set supposed to be evaluated without ACPI?

^ permalink raw reply	[flat|nested] 8+ messages in thread
* [PATCH v5 1/3] mailbox: Add support for APM X-Gene platform mailbox driver
@ 2016-02-10 14:41 Mathieu Poirier
  2016-02-13  3:39   ` Duc Dang
  0 siblings, 1 reply; 8+ messages in thread
From: Mathieu Poirier @ 2016-02-10 14:41 UTC (permalink / raw)
  To: linux-arm-kernel

On 9 February 2016 at 20:46, Duc Dang <dhdang@apm.com> wrote:
> On Tue, Feb 9, 2016 at 8:40 AM, Mathieu Poirier
> <mathieu.poirier@linaro.org> wrote:
>> On 8 February 2016 at 15:04, Duc Dang <dhdang@apm.com> wrote:
>>> X-Gene mailbox controller provides 8 mailbox channels, with
>>> each channel has a dedicated interrupt line.
>>>
>>> Signed-off-by: Feng Kan <fkan@apm.com>
>>> Signed-off-by: Duc Dang <dhdang@apm.com>
>>> ---
>>> Changes since v4:
>>>         - Rebase over v4.5-rc1
>>>         - Fix section mistmatch warning by removing
>>>         __init in slimpro_mbox_probe declaration
>>>         - Correctly print channel number when
>>>         there is no IRQ for that channel
>>>
>>> Changes since v3:
>>>         - Rebase over v4.4
>>>         - Remove 'id' in slimpro_mbox_chan structure
>>>         - Remove small functions that are only called once
>>>         and fold them into the other callers
>>>         - Remove void* pointer type cast
>>>         - Relax the number of mailbox IRQs condition
>>>         - Use subsys_initcall to guarantee mailbox driver
>>>         will be registered before any other dependent driver
>>>         is loaded.
>>>
>>>  drivers/mailbox/Kconfig                 |   9 ++
>>>  drivers/mailbox/Makefile                |   2 +
>>>  drivers/mailbox/mailbox-xgene-slimpro.c | 264 ++++++++++++++++++++++++++++++++
>>>  3 files changed, 275 insertions(+)
>>>  create mode 100644 drivers/mailbox/mailbox-xgene-slimpro.c
>>>
>>> diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig
>>> index 546d05f..678e434 100644
>>> --- a/drivers/mailbox/Kconfig
>>> +++ b/drivers/mailbox/Kconfig
>>> @@ -85,4 +85,13 @@ config MAILBOX_TEST
>>>           Test client to help with testing new Controller driver
>>>           implementations.
>>>
>>> +config XGENE_SLIMPRO_MBOX
>>> +       tristate "APM SoC X-Gene SLIMpro Mailbox Controller"
>>> +       depends on ARCH_XGENE
>>> +       help
>>> +         An implementation of the APM X-Gene Interprocessor Communication
>>> +         Mailbox (IPCM) between the ARM 64-bit cores and SLIMpro controller.
>>> +         It is used to send short messages between ARM64-bit cores and
>>> +         the SLIMpro Management Engine, primarily for PM. Say Y here if you
>>> +         want to use the APM X-Gene SLIMpro IPCM support.
>>>  endif
>>> diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile
>>> index 92435ef..b602ef8 100644
>>> --- a/drivers/mailbox/Makefile
>>> +++ b/drivers/mailbox/Makefile
>>> @@ -17,3 +17,5 @@ obj-$(CONFIG_ALTERA_MBOX)     += mailbox-altera.o
>>>  obj-$(CONFIG_BCM2835_MBOX)     += bcm2835-mailbox.o
>>>
>>>  obj-$(CONFIG_STI_MBOX)         += mailbox-sti.o
>>> +
>>> +obj-$(CONFIG_XGENE_SLIMPRO_MBOX) += mailbox-xgene-slimpro.o
>>> diff --git a/drivers/mailbox/mailbox-xgene-slimpro.c b/drivers/mailbox/mailbox-xgene-slimpro.c
>>> new file mode 100644
>>> index 0000000..0ea1eb8
>>> --- /dev/null
>>> +++ b/drivers/mailbox/mailbox-xgene-slimpro.c
>>> @@ -0,0 +1,264 @@
>>> +/*
>>> + * APM X-Gene SLIMpro MailBox Driver
>>> + *
>>> + * Copyright (c) 2015, Applied Micro Circuits Corporation
>>> + * Author: Feng Kan fkan at apm.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.
>>> + *
>>> + * 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, see <http://www.gnu.org/licenses/>.
>>> + *
>>> + */
>>> +#include <linux/acpi.h>
>>> +#include <linux/delay.h>
>>> +#include <linux/interrupt.h>
>>> +#include <linux/io.h>
>>> +#include <linux/mailbox_controller.h>
>>> +#include <linux/module.h>
>>> +#include <linux/of.h>
>>> +#include <linux/platform_device.h>
>>> +#include <linux/spinlock.h>
>>> +
>>> +#define MBOX_CON_NAME                  "slimpro-mbox"
>>> +#define MBOX_REG_SET_OFFSET            0x1000
>>> +#define MBOX_CNT                       8
>>> +#define MBOX_STATUS_AVAIL_MASK         BIT(16)
>>> +#define MBOX_STATUS_ACK_MASK           BIT(0)
>>> +
>>> +/* Configuration and Status Registers */
>>> +#define REG_DB_IN              0x00
>>> +#define REG_DB_DIN0            0x04
>>> +#define REG_DB_DIN1            0x08
>>> +#define REG_DB_OUT             0x10
>>> +#define REG_DB_DOUT0           0x14
>>> +#define REG_DB_DOUT1           0x18
>>> +#define REG_DB_STAT            0x20
>>> +#define REG_DB_STATMASK                0x24
>>> +
>>> +struct slimpro_mbox_chan {
>>> +       struct device *dev;
>>> +       struct mbox_chan *chan;
>>> +       void __iomem *reg;
>>> +       int irq;
>>> +       u32 rx_msg[3];
>>> +};
>>> +
>>> +struct slimpro_mbox {
>>> +       struct mbox_controller mb_ctrl;
>>> +       struct slimpro_mbox_chan mc[MBOX_CNT];
>>> +       struct mbox_chan chans[MBOX_CNT];
>>> +};
>>
>> The above two structure declaration could use kernel style documentation.
>
> Can you please clarify or give an example? I looked into several files
> in drivers/mailbox/ and drivers/irqchip but could not find what I need
> to tweak.

http://lxr.free-electrons.com/source/drivers/mailbox/mailbox-sti.c#L42

>
>>
>>> +
>>> +static void mb_chan_send_msg(struct slimpro_mbox_chan *mb_chan, u32 *msg)
>>> +{
>>> +       writel(msg[1], mb_chan->reg + REG_DB_DOUT0);
>>> +       writel(msg[2], mb_chan->reg + REG_DB_DOUT1);
>>> +       writel(msg[0], mb_chan->reg + REG_DB_OUT);
>>> +}
>>> +
>>> +static void mb_chan_recv_msg(struct slimpro_mbox_chan *mb_chan)
>>> +{
>>> +       mb_chan->rx_msg[1] = readl(mb_chan->reg + REG_DB_DIN0);
>>> +       mb_chan->rx_msg[2] = readl(mb_chan->reg + REG_DB_DIN1);
>>> +       mb_chan->rx_msg[0] = readl(mb_chan->reg + REG_DB_IN);
>>> +}
>>
>> Is there a requirement that operations in the above two functions be
>> ordered?  If not significant gains could be achieved by using
>> writel/readl_relaxed().  Same comment for the rest of this driver.
>
> The 'writes' need to be in order as writing to REG_DB_OUT will trigger
> interrupt, so I want the other 2 'writes' complete before it.
>
> After the receiver get the message, it will clear door bell available
> interrupt request, this will also trigger a door bell acknowledge
> interrupt. So the 'read' to get the message and the 'write' to clear
> the door bell available interrupt must be in order as well.
>
> Regards,
> Duc Dang.
>>
>> Thanks,
>> Mathieu
>>
>>> +
>>> +static int mb_chan_status_ack(struct slimpro_mbox_chan *mb_chan)
>>> +{
>>> +       u32 val = readl(mb_chan->reg + REG_DB_STAT);
>>> +
>>> +       if (val & MBOX_STATUS_ACK_MASK) {
>>> +               writel(MBOX_STATUS_ACK_MASK, mb_chan->reg + REG_DB_STAT);
>>> +               return 1;
>>> +       }
>>> +       return 0;
>>> +}
>>> +
>>> +static int mb_chan_status_avail(struct slimpro_mbox_chan *mb_chan)
>>> +{
>>> +       u32 val = readl(mb_chan->reg + REG_DB_STAT);
>>> +
>>> +       if (val & MBOX_STATUS_AVAIL_MASK) {
>>> +               mb_chan_recv_msg(mb_chan);
>>> +               writel(MBOX_STATUS_AVAIL_MASK, mb_chan->reg + REG_DB_STAT);
>>> +               return 1;
>>> +       }
>>> +       return 0;
>>> +}
>>> +
>>> +static irqreturn_t slimpro_mbox_irq(int irq, void *id)
>>> +{
>>> +       struct slimpro_mbox_chan *mb_chan = id;
>>> +
>>> +       if (mb_chan_status_ack(mb_chan))
>>> +               mbox_chan_txdone(mb_chan->chan, 0);
>>> +
>>> +       if (mb_chan_status_avail(mb_chan))
>>> +               mbox_chan_received_data(mb_chan->chan, mb_chan->rx_msg);
>>> +
>>> +       return IRQ_HANDLED;
>>> +}
>>> +
>>> +static int slimpro_mbox_send_data(struct mbox_chan *chan, void *msg)
>>> +{
>>> +       struct slimpro_mbox_chan *mb_chan = chan->con_priv;
>>> +
>>> +       mb_chan_send_msg(mb_chan, msg);
>>> +       return 0;
>>> +}
>>> +
>>> +static int slimpro_mbox_startup(struct mbox_chan *chan)
>>> +{
>>> +       struct slimpro_mbox_chan *mb_chan = chan->con_priv;
>>> +       int rc;
>>> +       u32 val;
>>> +
>>> +       rc = devm_request_irq(mb_chan->dev, mb_chan->irq, slimpro_mbox_irq, 0,
>>> +                             MBOX_CON_NAME, mb_chan);
>>> +       if (unlikely(rc)) {
>>> +               dev_err(mb_chan->dev, "failed to register mailbox interrupt %d\n",
>>> +                       mb_chan->irq);
>>> +               return rc;
>>> +       }
>>> +
>>> +       /* Enable HW interrupt */
>>> +       writel(MBOX_STATUS_ACK_MASK | MBOX_STATUS_AVAIL_MASK,
>>> +              mb_chan->reg + REG_DB_STAT);
>>> +       /* Unmask doorbell status interrupt */
>>> +       val = readl(mb_chan->reg + REG_DB_STATMASK);
>>> +       val &= ~(MBOX_STATUS_ACK_MASK | MBOX_STATUS_AVAIL_MASK);
>>> +       writel(val, mb_chan->reg + REG_DB_STATMASK);
>>> +
>>> +       return 0;
>>> +}
>>> +
>>> +static void slimpro_mbox_shutdown(struct mbox_chan *chan)
>>> +{
>>> +       struct slimpro_mbox_chan *mb_chan = chan->con_priv;
>>> +       u32 val;
>>> +
>>> +       /* Mask doorbell status interrupt */
>>> +       val = readl(mb_chan->reg + REG_DB_STATMASK);
>>> +       val |= (MBOX_STATUS_ACK_MASK | MBOX_STATUS_AVAIL_MASK);
>>> +       writel(val, mb_chan->reg + REG_DB_STATMASK);
>>> +
>>> +       devm_free_irq(mb_chan->dev, mb_chan->irq, mb_chan);
>>> +}
>>> +
>>> +static struct mbox_chan_ops slimpro_mbox_ops = {
>>> +       .send_data = slimpro_mbox_send_data,
>>> +       .startup = slimpro_mbox_startup,
>>> +       .shutdown = slimpro_mbox_shutdown,
>>> +};
>>> +
>>> +static int slimpro_mbox_probe(struct platform_device *pdev)
>>> +{
>>> +       struct slimpro_mbox *ctx;
>>> +       struct resource *regs;
>>> +       void __iomem *mb_base;
>>> +       int rc;
>>> +       int i;
>>> +
>>> +       ctx = devm_kzalloc(&pdev->dev, sizeof(struct slimpro_mbox), GFP_KERNEL);
>>> +       if (IS_ERR(ctx))
>>> +               return PTR_ERR(ctx);
>>> +
>>> +       platform_set_drvdata(pdev, ctx);
>>> +
>>> +       regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>>> +       mb_base = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
>>> +       if (IS_ERR(mb_base))
>>> +               return PTR_ERR(mb_base);
>>> +
>>> +       /* Setup mailbox links */
>>> +       for (i = 0; i < MBOX_CNT; i++) {
>>> +               ctx->mc[i].irq = platform_get_irq(pdev, i);
>>> +               if (ctx->mc[i].irq < 0) {
>>> +                       if (i == 0) {
>>> +                               dev_err(&pdev->dev, "no available IRQ\n");
>>> +                               return -EINVAL;
>>> +                       }
>>> +                       dev_info(&pdev->dev, "no IRQ for channel %d\n", i);
>>> +                       break;
>>> +               }
>>> +
>>> +               ctx->mc[i].dev = &pdev->dev;
>>> +               ctx->mc[i].reg = mb_base + i * MBOX_REG_SET_OFFSET;
>>> +               ctx->mc[i].chan = &ctx->chans[i];
>>> +               ctx->chans[i].con_priv = &ctx->mc[i];
>>> +       }
>>> +
>>> +       /* Setup mailbox controller */
>>> +       ctx->mb_ctrl.dev = &pdev->dev;
>>> +       ctx->mb_ctrl.chans = ctx->chans;
>>> +       ctx->mb_ctrl.txdone_irq = true;
>>> +       ctx->mb_ctrl.ops = &slimpro_mbox_ops;
>>> +       ctx->mb_ctrl.num_chans = i;
>>> +
>>> +       rc = mbox_controller_register(&ctx->mb_ctrl);
>>> +       if (rc) {
>>> +               dev_err(&pdev->dev,
>>> +                       "APM X-Gene SLIMpro MailBox register failed:%d\n", rc);
>>> +               return rc;
>>> +       }
>>> +
>>> +       dev_info(&pdev->dev, "APM X-Gene SLIMpro MailBox registered\n");
>>> +       return 0;
>>> +}
>>> +
>>> +static int slimpro_mbox_remove(struct platform_device *pdev)
>>> +{
>>> +       struct slimpro_mbox *smb = platform_get_drvdata(pdev);
>>> +
>>> +       mbox_controller_unregister(&smb->mb_ctrl);
>>> +       return 0;
>>> +}
>>> +
>>> +static const struct of_device_id slimpro_of_match[] = {
>>> +       {.compatible = "apm,xgene-slimpro-mbox" },
>>> +       { },
>>> +};
>>> +MODULE_DEVICE_TABLE(of, slimpro_of_match);
>>> +
>>> +#ifdef CONFIG_ACPI
>>> +static const struct acpi_device_id slimpro_acpi_ids[] = {
>>> +       {"APMC0D01", 0},
>>> +       {}
>>> +};
>>> +MODULE_DEVICE_TABLE(acpi, slimpro_acpi_ids);
>>> +#endif
>>> +
>>> +static struct platform_driver slimpro_mbox_driver = {
>>> +       .probe  = slimpro_mbox_probe,
>>> +       .remove = slimpro_mbox_remove,
>>> +       .driver = {
>>> +               .name = "xgene-slimpro-mbox",
>>> +               .of_match_table = of_match_ptr(slimpro_of_match),
>>> +               .acpi_match_table = ACPI_PTR(slimpro_acpi_ids)
>>> +       },
>>> +};
>>> +
>>> +static int __init slimpro_mbox_init(void)
>>> +{
>>> +       return platform_driver_register(&slimpro_mbox_driver);
>>> +}
>>> +
>>> +static void __exit slimpro_mbox_exit(void)
>>> +{
>>> +       platform_driver_unregister(&slimpro_mbox_driver);
>>> +}
>>> +
>>> +subsys_initcall(slimpro_mbox_init);
>>> +module_exit(slimpro_mbox_exit);
>>> +
>>> +MODULE_DESCRIPTION("APM X-Gene SLIMpro Mailbox Driver");
>>> +MODULE_LICENSE("GPL");
>>> --
>>> 1.9.1
>>>

^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2016-02-19 20:44 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-02-13  4:56 [PATCH v6 0/3] mailbox: Add APM X-Gene platform mailbox driver Itaru Kitayama
2016-02-13  5:52 ` Duc Dang
  -- strict thread matches above, loose matches on Subject: below --
2016-02-10 14:41 [PATCH v5 1/3] mailbox: Add support for " Mathieu Poirier
2016-02-13  3:39 ` [PATCH v6 0/3] mailbox: Add " Duc Dang
2016-02-13  3:39   ` Duc Dang
2016-02-13  3:39   ` Duc Dang
2016-02-19 20:43   ` Duc Dang
2016-02-19 20:43     ` Duc Dang
2016-02-19 20:43     ` Duc Dang

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