Re: CMEMK Error
Jaya krishnan wrote: Hi I am unable to insmod the CMEM driver. The parameters Phys_start and phys_end are not detected, eventhogh I supplied it properly. At the same time , I am able to insert other modules like dsplink. I do not suspect any problems with CMEM driver, since the same had been used earlier successfully. The error message is given below. Pls suggest a solution \...@\h:\w\$ ./loadmodules.sh cmemk: Unknown parameter `"phys_start' why don't you also post the line that tries to load cmem? CMEMK Error: Pysical start and end addresses not supplied insmod: cannot insert 'cmemk.ko': invalid parameter ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: CMEMK Error
Jaya krishnan wrote: Yes, here is it insmod cmemk.ko phys_start=0x8500 phys_end=0x8aa0 pools=5x4697152,64x718848 looks OK to me. a wild guess, are you sure it's not some weird charset error that makes the module loader not like the parameters? --- Original Message --- Sender : Vladimir Pantelic Date : Oct 08, 2009 16:51 (GMT+09:00) Title : Re: CMEMK Error Jaya krishnan wrote: Hi I am unable to insmod the CMEM driver. The parameters Phys_start and phys_end are not detected, eventhogh I supplied it properly. At the same time , I am able to insert other modules like dsplink. I do not suspect any problems with CMEM driver, since the same had been used earlier successfully. The error message is given below. Pls suggest a solution \...@\h:\w\$ ./loadmodules.sh cmemk: Unknown parameter `"phys_start' why don't you also post the line that tries to load cmem? CMEMK Error: Pysical start and end addresses not supplied insmod: cannot insert'cmemk.ko': invalid parameter ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source Jayakrishnan M M Research Engineer Key Systems Development Group Security& Imaging Solutions Division SAMSUNG TECHWIN CO.,LTD TEL +82-2-3467-7255 FAX +82-2-3467-7316 Mobile +82-10-6409-3619 E-mail:jaya.krish...@samsung.com ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: CMEMK Error
> Jaya krishnan wrote: > Hi > Thanks for the mail > No such errors. Could this be related to the shell? > It happened after I changed the Busybox. Yes, that happened to us also... the busybox insmod is *very* picky. Try using the full path to the module with the same parameters you listed.. \ I.E: insmod /full_path_to/cmemk.ko \ phys_start=0x8500 phys_end=0x8aa0 pools=5x4697152,64x718848 Also, dsplink looked like it was complaining about a missing version struct. You should go through the cmem and dsplink builds and make sure the kernel environment variable points to the right place. Oh, that reminds me... I had to patch the dsplink build to include the kernel config file and check whether module versioning is enabled. CMEM doesn't need this because it uses the kernel build system natively. I don't have an official patch, but look inside //cetools/packages/dsplink/make/Linux Inside file: linux-davinci-2.6.mk Make sure these variables are set properly... # Set this to the kernel full path BASE_BUILDOS:= /your/path/to/kernel/root # Set this to your kernel config file BASE_BUILDOS_CONFIG=.config Now, look for this header # == # Post processing utilities for Linux 2.6 # == Change whatever is there to this: ifneq ($(CONFIG_MODVERSIONS),) CMD_MODPOST_FLAGS := -m -i else CMD_MODPOST_FLAGS := -i endif CMD_MODPOST := $(BASE_BUILDOS)/scripts/mod/modpost \ $(CMD_MODPOST_FLAGS) $(BASE_BUILDOS)/Module.symvers $ (BASE_BUILDOS)/vmlinux With those changes in place, your dsplink module will have the same versioning method as your kernel and you shouldn't have any complaints from the loader. Hope this helps out, David -- DAVID A. KONDRAD Software Design Engineer Legrand, Home Systems Division (formerly On-Q) www.onqlegrand.com This email, and any document attached hereto, may contain confidential and/or privileged information. If you are not the intended recipient (or have received this email in error) please notify the sender immediately and destroy this email. Any unauthorized, direct or indirect, copying, disclosure, distribution or other use of the material or parts thereof is strictly forbidden. ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
RE: CMEMK Error
> -Original Message- > From: davinci-linux-open-source-boun...@linux.davincidsp.com > [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com > ] On Behalf Of david.kond...@legrandna.com > Sent: Thursday, October 08, 2009 7:47 AM > To: jaya.krish...@samsung.com > Cc: davinci-linux-open-source@linux.davincidsp.com > Subject: Re: CMEMK Error > > > Jaya krishnan wrote: > > Hi > > Thanks for the mail > > No such errors. Could this be related to the shell? > > It happened after I changed the Busybox. > > Yes, that happened to us also... the busybox insmod is *very* picky. > Try using the full path to the module with the same > parameters you listed.. > \ > > I.E: > insmod /full_path_to/cmemk.ko \ > phys_start=0x8500 phys_end=0x8aa0 > pools=5x4697152,64x718848 > I'll blame the busybox "sh", since I've had bad experience with it, and because your original email showed something strange: > cmemk: Unknown parameter `"phys_start' Note the double quote before phys_start, it's inside the single quotes, which tells me that's what insmod is getting. Regards, - Rob___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: CMEMK Error
Hi The problem is solved after I changed the Busybox. Thanks JK --- Original Message --- Sender : Tivy, Robert Date : Oct 09, 2009 01:47 (GMT+09:00) Title : RE: CMEMK Error > -Original Message- > From: davinci-linux-open-source-boun...@linux.davincidsp.com > [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com > ] On Behalf Of david.kond...@legrandna.com > Sent: Thursday, October 08, 2009 7:47 AM > To: jaya.krish...@samsung.com > Cc: davinci-linux-open-source@linux.davincidsp.com > Subject: Re: CMEMK Error > > > Jaya krishnan wrote: > > Hi > > Thanks for the mail > > No such errors. Could this be related to the shell? > > It happened after I changed the Busybox. > > Yes, that happened to us also... the busybox insmod is *very* picky. > Try using the full path to the module with the same > parameters you listed.. > \ > > I.E: > insmod /full_path_to/cmemk.ko \ > phys_start=0x8500 phys_end=0x8aa0 > pools=5x4697152,64x718848 > I'll blame the busybox "sh", since I've had bad experience with it, and because your original email showed something strange: > cmemk: Unknown parameter `"phys_start' Note the double quote before phys_start, it's inside the single quotes, which tells me that's what insmod is getting. Regards, - Rob Jayakrishnan M M Research Engineer Key Systems Development Group Security & Imaging Solutions Division SAMSUNG TECHWIN CO.,LTD TEL +82-2-3467-7255 FAX +82-2-3467-7316 Mobile +82-10-6409-3619 E-mail:jaya.krish...@samsung.com ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: CMEMK Error
Hi please update us about which version of BusyBox you switched to. It shall help others here Thanks Albert On Mon, Oct 12, 2009 at 6:23 AM, Jaya krishnan wrote: > Hi > The problem is solved after I changed the Busybox. Thanks > JK > > > > > --- Original Message --- > Sender : Tivy, Robert > Date : Oct 09, 2009 01:47 (GMT+09:00) > Title : RE: CMEMK Error > > > > > -Original Message- > > From: davinci-linux-open-source-boun...@linux.davincidsp.com > > [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com > > ] On Behalf Of david.kond...@legrandna.com > > Sent: Thursday, October 08, 2009 7:47 AM > > To: jaya.krish...@samsung.com > > Cc: davinci-linux-open-source@linux.davincidsp.com > > Subject: Re: CMEMK Error > > > > > Jaya krishnan wrote: > > > Hi > > > Thanks for the mail > > > No such errors. Could this be related to the shell? > > > It happened after I changed the Busybox. > > > > Yes, that happened to us also... the busybox insmod is *very* picky. > > Try using the full path to the module with the same > > parameters you listed.. > > \ > > > > I.E: > > insmod /full_path_to/cmemk.ko \ > > phys_start=0x8500 phys_end=0x8aa0 > > pools=5x4697152,64x718848 > > > > I'll blame the busybox "sh", since I've had bad experience with it, > and because your original email showed something strange: > > cmemk: Unknown parameter `"phys_start' > Note the double quote before phys_start, it's inside the single quotes, > which tells me that's what insmod is getting. > > Regards, > > - Rob > >Jayakrishnan M M > Research Engineer > Key Systems Development Group > Security & Imaging Solutions Division > SAMSUNG TECHWIN CO.,LTD > > TEL +82-2-3467-7255 > FAX +82-2-3467-7316 > Mobile +82-10-6409-3619 > E-mail:jaya.krish...@samsung.com > > > > > > ___ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@linux.davincidsp.com > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > > -- Albert Burbea Harishonim 8 Ramat Gan 52502, Israel Tel/Fax + 972-3-7526016 Mobile: +972-52-3541842 ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: Re: CMEMK Error
Yes, here is it insmod cmemk.ko phys_start=0x8500 phys_end=0x8aa0 pools=5x4697152,64x718848 --- Original Message --- Sender : Vladimir Pantelic Date : Oct 08, 2009 16:51 (GMT+09:00) Title : Re: CMEMK Error Jaya krishnan wrote: > Hi > I am unable to insmod the CMEM driver. The parameters Phys_start and > phys_end are not detected, eventhogh I supplied it properly. > At the same time , I am able to insert other modules like dsplink. I do > not suspect any problems with CMEM driver, since the same had been used > earlier successfully. The error message is given below. Pls suggest > a solution > > \...@\h:\w\$ ./loadmodules.sh > cmemk: Unknown parameter `"phys_start' why don't you also post the line that tries to load cmem? > CMEMK Error: Pysical start and end addresses not supplied > insmod: cannot insert 'cmemk.ko': invalid parameter ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source Jayakrishnan M M Research Engineer Key Systems Development Group Security & Imaging Solutions Division SAMSUNG TECHWIN CO.,LTD TEL +82-2-3467-7255 FAX +82-2-3467-7316 Mobile +82-10-6409-3619 E-mail:jaya.krish...@samsung.com ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: Re: CMEMK Error
Yes. That would be fine. New BusyBox V 1.1.3 Old one BusyBox V1.13.4 (Which causes problem) Regards JK --- Original Message --- Sender : Albert Burbea Date : Oct 18, 2009 19:38 (GMT+09:00) Title : Re: CMEMK Error Hi please update us about which version of BusyBox you switched to. It shall help others here Thanks Albert On Mon, Oct 12, 2009 at 6:23 AM, Jaya krishnan wrote: Hi The problem is solved after I changed the Busybox. Thanks JK --- Original Message --- Sender : Tivy, Robert Date : Oct 09, 2009 01:47 (GMT+09:00) Title : RE: CMEMK Error > -Original Message- > From: davinci-linux-open-source-boun...@linux.davincidsp.com > [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com > ] On Behalf Of david.kond...@legrandna.com > Sent: Thursday, October 08, 2009 7:47 AM > To: jaya.krish...@samsung.com > Cc: davinci-linux-open-source@linux.davincidsp.com > Subject: Re: CMEMK Error > > > Jaya krishnan wrote: > > Hi > > Thanks for the mail > > No such errors. Could this be related to the shell? > > It happened after I changed the Busybox. > > Yes, that happened to us also... the busybox insmod is *very* picky. > Try using the full path to the module with the same > parameters you listed.. > \ > > I.E: > insmod /full_path_to/cmemk.ko \ > phys_start=0x8500 phys_end=0x8aa0 > pools=5x4697152,64x718848 > I'll blame the busybox "sh", since I've had bad experience with it, and because your original email showed something strange: > cmemk: Unknown parameter `"phys_start' Note the double quote before phys_start, it's inside the single quotes, which tells me that's what insmod is getting. Regards, - Rob Jayakrishnan M M Research Engineer Key Systems Development Group Security & Imaging Solutions Division SAMSUNG TECHWIN CO.,LTD TEL +82-2-3467-7255 FAX +82-2-3467-7316 Mobile +82-10-6409-3619 E-mail:jaya.krish...@samsung.com ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source -- Albert Burbea Harishonim 8 Ramat Gan 52502, Israel Tel/Fax + 972-3-7526016 Mobile: +972-52-3541842 Jayakrishnan M M Research Engineer Key Systems Development Group Security & Imaging Solutions Division SAMSUNG TECHWIN CO.,LTD TEL +82-2-3467-7255 FAX +82-2-3467-7316 Mobile +82-10-6409-3619 E-mail:jaya.krish...@samsung.com ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
Re: CMEMK Error: GETPHYS: Failed to convert virtual 0x8425c050
hello, you can check the uboot params (bootargs mem=), make sure that the memory is not overlapped between linux and cmem ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
RE: CMEMK Error: GETPHYS: Failed to convert virtual 0x8425c050 to physical.
> CMEMK Error: GETPHYS: Failed to convert virtual 0x841b3050 to
> physical.
> Decode Error: VIDDEC_process() failed with a fatal error (-2
> ext: 0x28)
I'm not sure under which context the CMEM GETPHYS ioctl is called, but
the CMEMK error is due to an unmapped virtual address. The address
0x841b3050 (and the similar one specified in the Subject: ) does not
look like a valid virtual address. It appears to be a physical address,
which would explain the error, but it's not in the address range of
physical memory managed by CMEM (0x8780-0x8900). Regardless,
the GETPHYS ioctl needs a valid, mapped virtual address. While the CMEM
GETPHYS ioctl will work for any mapped virtual address, it is generally
used only for buffers allocated through CMEM (perhaps via the OSAL
Memory_contigAlloc() API).
Regards,
- Rob
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
> ] On Behalf Of Wendell Liu
> Sent: Tuesday, September 04, 2007 12:46 PM
> To: 'davinci-linux-open-source@linux.davincidsp.com'
> Subject: CMEMK Error: GETPHYS: Failed to convert virtual
> 0x8425c050 to physical.
>
> Hello,
>
> I try to test a codec on the Davinci platform. Please someone
> give me a hint what's this error means, and how to solve it?
>
> Thank you so much!
> Wendell
> ==
> After I run "./decoded -v t.264", I got the following error:
>
> Decode Debug: NTSC selected
> Decode demo started.
> Decode Debug: Codec Engine initialized
> Decode Debug: Init rendezvous opened for 3 threads Decode
> Debug: Cleanup rendezvous opened for 3 threads Decode Debug:
> Priming rendezvous opened for 2 threads Decode Debug: Display
> buffer 0 mapped to 0x412d1000 has physical address 0x8680
> Decode Debug: Display buffer 1 mapped to 0x413d has
> physical address 0x868ff000 Decode Debug: Display buffer 2
> mapped to 0x414cf000 has physical address 0x869fe000 Decode
> Debug: Video display device initialized.
> Decode Debug: Display thread created
> Decode Debug: Video file successfully opened Decode Debug:
> OSD successfully initialized Decode Debug: OSD transparency
> initialized Decode Debug: Codec Engine opened in video thread
> Decode Debug: Codec Engine opened in control thread Decode
> Debug: Video decoder created Decode Debug: Contiguous buffer
> allocated at physical address 0x88bac000 Decode Debug:
> Contiguous buffer allocated at physical address 0x882ac000
> Decode Debug: Contiguous buffer allocated at physical address
> 0x885ac000 Decode Debug: Contiguous buffer allocated at
> physical address 0x888ac000 Decode Debug: User interface
> created Decode Debug: Entering display main loop.
>
> CMEMK Error: GETPHYS: Failed to convert virtual 0x841b3050 to
> physical.
> Decode Error: VIDDEC_process() failed with a fatal error (-2
> ext: 0x28)
>
> Decode Debug: Entering video main loop.
> Total I-frames: 0, P-frames: 0, B-frames: 0, IDR-frames: 0
> rejected: 0 ==
> My loadmodules.sh is:
>
> insmod cmemk.ko phys_start=0x8780 phys_end=0x8900
> pools=20x4096,10x131072,6x3145728
> insmod dsplinkk.ko ddr_start=0x8fa0 ddr_size=0x40
>
> rm -f /dev/dsplink
> mknod /dev/dsplink c `awk "\\$2==\"dsplink\" {print \\$1}"
> /proc/devices` 0 ==
>
>
>
>
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RE: CMEMK Error: GETPHYS: Failed to convert virtual 0x8425c050 to physical.
Thank you, Rob.
Funny thing is: after I power off/on the board, everything is just working.
Wendell
-Original Message-
From: Tivy, Robert [mailto:[EMAIL PROTECTED]
Sent: Tuesday, September 04, 2007 6:58 PM
To: Wendell Liu; davinci-linux-open-source@linux.davincidsp.com
Subject: RE: CMEMK Error: GETPHYS: Failed to convert virtual 0x8425c050
to physical.
> CMEMK Error: GETPHYS: Failed to convert virtual 0x841b3050 to
> physical.
> Decode Error: VIDDEC_process() failed with a fatal error (-2
> ext: 0x28)
I'm not sure under which context the CMEM GETPHYS ioctl is called, but
the CMEMK error is due to an unmapped virtual address. The address
0x841b3050 (and the similar one specified in the Subject: ) does not
look like a valid virtual address. It appears to be a physical address,
which would explain the error, but it's not in the address range of
physical memory managed by CMEM (0x8780-0x8900). Regardless,
the GETPHYS ioctl needs a valid, mapped virtual address. While the CMEM
GETPHYS ioctl will work for any mapped virtual address, it is generally
used only for buffers allocated through CMEM (perhaps via the OSAL
Memory_contigAlloc() API).
Regards,
- Rob
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
> ] On Behalf Of Wendell Liu
> Sent: Tuesday, September 04, 2007 12:46 PM
> To: 'davinci-linux-open-source@linux.davincidsp.com'
> Subject: CMEMK Error: GETPHYS: Failed to convert virtual
> 0x8425c050 to physical.
>
> Hello,
>
> I try to test a codec on the Davinci platform. Please someone
> give me a hint what's this error means, and how to solve it?
>
> Thank you so much!
> Wendell
> ==
> After I run "./decoded -v t.264", I got the following error:
>
> Decode Debug: NTSC selected
> Decode demo started.
> Decode Debug: Codec Engine initialized
> Decode Debug: Init rendezvous opened for 3 threads Decode
> Debug: Cleanup rendezvous opened for 3 threads Decode Debug:
> Priming rendezvous opened for 2 threads Decode Debug: Display
> buffer 0 mapped to 0x412d1000 has physical address 0x8680
> Decode Debug: Display buffer 1 mapped to 0x413d has
> physical address 0x868ff000 Decode Debug: Display buffer 2
> mapped to 0x414cf000 has physical address 0x869fe000 Decode
> Debug: Video display device initialized.
> Decode Debug: Display thread created
> Decode Debug: Video file successfully opened Decode Debug:
> OSD successfully initialized Decode Debug: OSD transparency
> initialized Decode Debug: Codec Engine opened in video thread
> Decode Debug: Codec Engine opened in control thread Decode
> Debug: Video decoder created Decode Debug: Contiguous buffer
> allocated at physical address 0x88bac000 Decode Debug:
> Contiguous buffer allocated at physical address 0x882ac000
> Decode Debug: Contiguous buffer allocated at physical address
> 0x885ac000 Decode Debug: Contiguous buffer allocated at
> physical address 0x888ac000 Decode Debug: User interface
> created Decode Debug: Entering display main loop.
>
> CMEMK Error: GETPHYS: Failed to convert virtual 0x841b3050 to
> physical.
> Decode Error: VIDDEC_process() failed with a fatal error (-2
> ext: 0x28)
>
> Decode Debug: Entering video main loop.
> Total I-frames: 0, P-frames: 0, B-frames: 0, IDR-frames: 0
> rejected: 0 ==
> My loadmodules.sh is:
>
> insmod cmemk.ko phys_start=0x8780 phys_end=0x8900
> pools=20x4096,10x131072,6x3145728
> insmod dsplinkk.ko ddr_start=0x8fa0 ddr_size=0x40
>
> rm -f /dev/dsplink
> mknod /dev/dsplink c `awk "\\$2==\"dsplink\" {print \\$1}"
> /proc/devices` 0 ==
>
>
>
>
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>
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Re: CMEMK Error: GETPHYS: Failed to convert virtual 0x8425c050 to phy sical.
Wendell Liu wrote:
I try to test a codec on the Davinci platform. Please someone give me a hint
what's this error means, and how to solve it?
The getphys implementation in the CMEM module is broken. In my patchset
posted here to run the demos against newer kernels, I rewrote how CMEM
get_phys works. I've attached just the cmemk-getphys.patch for you to
try. Depending on which version of the demos you have, you may have to
rework the patch slightly.
Kevin
Index: dvevm_1_00_00_32/cmem_1_00/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c
===
--- dvevm_1_00_00_32.orig/cmem_1_00/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c
+++ dvevm_1_00_00_32/cmem_1_00/packages/ti/sdo/linuxutils/cmem/src/module/cmemk.c
@@ -97,26 +97,44 @@ static struct file_operations cmem_fxns
/* Traverses the page tables and translates a virtual adress to a physical. */
static unsigned long get_phys(unsigned long virtp)
{
-pgd_t *pgd;
-pmd_t *pmd;
-pte_t *pte;
+unsigned long physp = 0;
struct mm_struct *mm = current->mm;
+struct vm_area_struct *vma;
-pgd = pgd_offset(mm, virtp);
-if (!(pgd_none(*pgd) || pgd_bad(*pgd))) {
-pmd = pmd_offset(pgd, virtp);
-
-if (!(pmd_none(*pmd) || pmd_bad(*pmd))) {
-pte = pte_offset_kernel(pmd, virtp);
-
-if (pte_present(*pte)) {
-return __pa(page_address(pte_page(*pte)) +
-(virtp & ~PAGE_MASK));
-}
-}
+/* For kernel direct-mapped memory, take the easy way */
+if (virtp >= PAGE_OFFSET) {
+ physp = virt_to_phys((void *)virtp);
+}
+
+/* this will catch, kernel-allocated, mmaped-to-usermode addresses */
+else if ((vma = find_vma(mm, virtp)) &&
+ (vma->vm_flags & VM_IO) &&
+ (vma->vm_pgoff)) {
+ physp = (vma->vm_pgoff << PAGE_SHIFT) + (virtp - vma->vm_start);
+}
+
+/* otherwise, use get_user_pages() for general userland pages */
+else {
+ int res, nr_pages = 1;
+ struct page *pages;
+ down_read(¤t->mm->mmap_sem);
+
+ res = get_user_pages(current, current->mm,
+ virtp, nr_pages,
+ 1, 0,
+ &pages, NULL);
+ up_read(¤t->mm->mmap_sem);
+
+ if (res == nr_pages) {
+ physp = __pa(page_address(&pages[0]) + (virtp & ~PAGE_MASK));
+ } else {
+ __E("%s: Unable to find phys addr for 0x%08lx\n",
+ __FUNCTION__, virtp);
+ __E("%s: get_user_pages() failed: %d\n", __FUNCTION__, res);
+ }
}
-return 0;
+return physp;
}
/* Allocates space from the top "highmem" contiguous buffer for pool buffer. */
@@ -145,6 +163,7 @@ static unsigned long alloc_pool_buffer(u
return 0;
}
+#ifdef __DEBUG
/* Only for debug */
static void dump_lists(int idx)
{
@@ -175,6 +194,7 @@ static void dump_lists(int idx)
up(&cmem_mutex);
}
+#endif
static int proc_fxn(char *page, char **start, off_t offset, int len,
int *eof, void *data)
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Re: CMEMK Error: GETPHYS: Failed to convert virtual 0x8425c050 to phy sical.
Hi, I would really like to try out this module, but do not have the means of compiling it at the moment (not in the office). I would be really grateful is someone could send me the latest patched version (for standard EVM ddr configuration) to try. I periodically see CMEMK errors and would like to see if this helps. Best Regards, Andrew On Wed, 2007-09-05 at 18:27 -0700, Kevin Hilman wrote: > Wendell Liu wrote: > > > > > I try to test a codec on the Davinci platform. Please someone give me a hint > > what's this error means, and how to solve it? > > > > The getphys implementation in the CMEM module is broken. In my patchset > posted here to run the demos against newer kernels, I rewrote how CMEM > get_phys works. I've attached just the cmemk-getphys.patch for you to > try. Depending on which version of the demos you have, you may have to > rework the patch slightly. > > Kevin > > ___ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@linux.davincidsp.com > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
