On Wed 2009-01-28 14:34:55, mohd.adil@xxxxxxx wrote: > Hi Pavel, > > Thanks for the response. > > Yes, for the solution we are trying to develop, we do > not care about the resume. We just put system to S3 and rest is taken > care by BIOS. > > The bug was actually on 2.6.24. > [1]http://bugzilla.kernel.org/show_bug.cgi?id=9528 You really want to try that on recent kernel. > I am also attaching the code I have written to > extract some ACPI variable information. Please have a look. > > Mohd. Adil > Tata Consultancy Services > Mailto: mohd.adil@xxxxxxx > Website: [2]http://www.tcs.com > ____________________________________________ > Experience certainty. IT Services > Business Solutions > Outsourcing > ____________________________________________ > > Pavel Machek <pavel@xxxxxxx> > > 01/27/2009 23:53 CET > > To > > mohd.adil@xxxxxxx > > cc > > majordomo@xxxxxxxxxxxxxxx, acpi-bugzilla-request@xxxxxxxxxxxxxxxxxxxxx, > linux-pm-devel-request@xxxxxxxxxxxxxxxxxxxxx, linux-pm@xxxxxxxxxxxxxx > > bcc > > Subject > > Re: ACPI problems > > On Wed 2009-01-21 15:22:20, mohd.adil@xxxxxxx wrote: > > Hi > > > > This is my first post to the list. Hope I will find a > > solution. > Please avoid using html on the lists. > > I am trying to develop a new functionality using a Sun > > alonso Quad Core blade (x86_64) architecture. > > > > The linux distribution which I am using contains a > very > > old acpi driver (02/09/2005 probably acpi version 1 compliant) > > > > Further, the BIOS I am using is an AMI BIOS. I am > fairly > > certain that it is acpi version 3 compliant. > Famous last words. > > Now, I am facing two problems here. > > > > 1) I am trying to evaluate some namespace control > methods > > which are setup in sytem DSDT. > > > > Functions are : > > > > [1]\\_SB.PERB (should contain memory location > > address) and > > > > [2]\\_SB.PERL (should contain length) > > > > This some information passed to us from BIOS > which is > > required for my development. > > > > I am using acpi_evaluate_object to evaluate these > > functions. I dont see any error in executing the evaluate > > > > function call. But they evaluate to zero. > Hmm, this is hard to debug without seeing the source. > > 2) The second task I have is to put the system into > S3 > > (suspend to ram) state. > > > > While doing that I am experiencing a problem. > Every > > time I write > > > > echo mem > /sys/power/state > > > > System hangs at METHOD_NAME__PTS method. There > is a > > related bug in > > > > new acpi driver related to this function. But > since I > > am using a very old driver this should not have > > happened. > Which kernel version? > > Just for added information : I dont really care > about > > resume from the S3 state. I dont have video card. > You want to suspend but don't care about resume...?! > Pavel > -- > (english) [3]http://www.livejournal.com/~pavelmachek > (cesky, pictures) > [4]http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html > ForwardSourceID:NT000197CA > =====-----=====-----===== > Notice: The information contained in this e-mail > message and/or attachments to it may contain > confidential or privileged information. If you are > not the intended recipient, any dissemination, use, > review, distribution, printing or copying of the > information contained in this e-mail message > and/or attachments to it are strictly prohibited. If > you have received this communication in error, > please notify us by reply e-mail or telephone and > immediately and permanently delete the message > and any attachments. Thank you > > References > > 1. http://bugzilla.kernel.org/show_bug.cgi?id=9528 > 2. http://www.tcs.com/ > 3. http://www.livejournal.com/~pavelmachek > 4. http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html > /* A simple linux kernel module */ > > /* Include the required headers */ > #include <linux/module.h> > #include <linux/kernel.h> > #include <linux/acpi.h> > #include <linux/slab.h> > #include <asm/uaccess.h> > #include <asm/rtc.h> > > void do_acpi_stuff( void ); > void print_acpi_buffer (acpi_string); > void print_acpi_int (acpi_string); > void print_acpi_string (acpi_string); > void print_acpi_int2 (acpi_string); > void print_acpi_integer (acpi_string); > void print_acpi_string2 (acpi_string); > void setup_pmem_reboot (void); > void unsetup_pmem_reboot (void); > void show_cmos (void); > void cmos_setsize(void); > > MODULE_PARM_DESC(choice, "A short integer"); > MODULE_PARM_DESC(data, "Unsigned Long"); > > static short choice = 0; > static long data = 0; > > module_param(choice , short, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); > module_param(data , long, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP); > > /* The module initialisation function */ > int init_module(void) > { > > printk(KERN_EMERG "Simple module inserted. Choice = %d, Data = %X \n", choice, data); > > /* extracting acpi namespace information */ > switch ( choice ) { > case 1 : show_cmos(); > break ; > > case 2 : setup_pmem_reboot(); > break ; > > case 3 : unsetup_pmem_reboot(); > break ; > > case 4 : cmos_setsize(); > break ; > > case 5 : do_acpi_stuff(); > break ; > > default : printk(KERN_EMERG "Invalid choice" ); > break; > } > > return 0; > } > > /* The module cleanup function */ > void cleanup_module() > { > printk(KERN_EMERG "Removing simple module.\n"); > } > > void setup_pmem_reboot (void) > { > int temp = 0; > outb ( 0xDD, 0x72); > temp = inb ( 0x73 ); > printk(KERN_EMERG "Pmem_reboot = %d ", temp ); > temp = temp | 0x10 ; > printk(KERN_EMERG "Pmem_reboot = %d ", temp ); > outb (0xDD, 0x72); > outb (temp , 0x73 ); > } > void show_cmos (void) > { > unsigned int temp = 0; > outb ( 0xDD, 0x72); > temp = inb ( 0x73 ); > printk(KERN_EMERG "Pmem_reboot = %d ", temp ); > outb ( 0xCB, 0x72); > temp = inb ( 0x73 ); > printk(KERN_EMERG "Size = %d ", temp ); > } > void unsetup_pmem_reboot (void) > { > unsigned int temp = 0; > outb ( 0xDD, 0x72); > temp = inb ( 0x73 ); > printk(KERN_EMERG "Pmem_reboot = %d ", temp ); > temp = temp & 0xEF ; > outb (0xDD, 0x72); > outb (temp , 0x73 ); > printk(KERN_EMERG "Pmem_reboot = %d ", temp ); > } > void cmos_setsize(void) > { > unsigned int temp = 0; > outb ( 0xCB, 0x72); > temp = inb ( 0x73 ); > printk(KERN_EMERG "Size = %d ", temp ); > outb ( 0xCB, 0x72); > outb ( data, 0x73); > printk(KERN_EMERG "Size = %d ", temp ); > } > void do_acpi_stuff( void ) > { > > print_acpi_buffer ("\\_SB.PERB"); > print_acpi_integer ("\\_SB.PERL"); > } > void print_acpi_integer (acpi_string astr) { > > acpi_handle s_b = (acpi_handle)0 ; > acpi_status status ; > unsigned long dat = 0; > > status = acpi_get_handle ( 0, astr, &s_b ); > if (status == AE_OK) > { > printk(KERN_EMERG " get_handle success %d, %x : ", status, s_b); > status = acpi_evaluate_integer ( s_b, astr, NULL, &dat); > if (status == AE_OK) > printk(KERN_EMERG " Integer Value = %d " , dat ) ; > else > printk(KERN_EMERG " Error evaluation %d " , status); > } > else > printk(KERN_EMERG " get_handle error %d : ", status ); > } > > void print_acpi_buffer (acpi_string astr) > { > > acpi_handle s_b = (acpi_handle)0 ; > acpi_status status ; > struct acpi_buffer rels = { 0, NULL }; > union acpi_object *out_objs; > u8 *cp ; > int i; > > out_objs = kmalloc (sizeof(union acpi_object), GFP_KERNEL); > if ( !out_objs) > { > printk(KERN_EMERG " Could Not allocate memory rels pointer , buffer "); > return; > } > status = acpi_get_handle ( 0, astr, &s_b ); > if (status == AE_OK) > { > printk(KERN_EMERG " get_handle success %d, %x : ", status, s_b); > > memset(out_objs, 0, sizeof(union acpi_object)); > rels.length = 2 * (sizeof(union acpi_object)); > rels.pointer = out_objs; > status = acpi_evaluate_object(s_b, NULL , NULL, &rels); > if (status == AE_OK) > { > printk(KERN_EMERG " eval_object buffer success.result: %d, %d ", out_objs->type, rels.length ); > cp = (u8 *)(out_objs->buffer.pointer) ; > for (i = 0; i< out_objs->buffer.length ; i++) { > > printk(KERN_EMERG " %X", cp[i]); > } > > } > else > { > printk(KERN_EMERG " error %d : ", status); > printk(KERN_EMERG " result buffer : %d " , (int)rels.length); > } > } > else > printk(KERN_EMERG " get_handle error %d : ", status ); > > kfree (out_objs); > } > > void print_acpi_int (acpi_string astr) > { > acpi_handle *s_b; > acpi_status status ; > struct acpi_buffer *rels; > union acpi_object *out_objs; > > s_b = kmalloc ( sizeof (acpi_handle), GFP_KERNEL); > if (!s_b) > { > printk(KERN_EMERG " Could Not allocate memory s_b , int "); > return; > } > rels = kmalloc ( sizeof (struct acpi_buffer) , GFP_KERNEL); > if ( !rels) > { > printk(KERN_EMERG " Could Not allocate memory rels , int"); > return; > } > rels->pointer = kmalloc ( sizeof(union acpi_object), GFP_KERNEL); > if ( !rels->pointer) > { > printk(KERN_EMERG " Could Not allocate memory rels pointer , int"); > return; > } > > status = acpi_get_handle ( 0, astr, &s_b ); > if (status == AE_OK) > { > printk(KERN_EMERG "get_handle success %d, %d : ", status, *s_b); > rels->length = sizeof(union acpi_object); > status = acpi_evaluate_object(*s_b, 0, 0, rels); > out_objs = (union acpi_object *) rels->pointer; > if (status == AE_OK) > { > printk(KERN_EMERG " eval_object int success. result : %d, %d, ", out_objs->type, rels->length ); > printk(KERN_EMERG "Int value = %d", out_objs->integer.value ); > } > else > { > printk(KERN_EMERG " error %d : ", status); > } > } > else > printk(KERN_EMERG " get_handle error %d : ", status); > > > kfree (rels->pointer); > kfree (rels); > kfree (s_b); > } -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
