* Re: Custom powerstates table in powernow-K7 ?
@ 2004-12-20 15:05 Nebojsa Trpkovic
0 siblings, 0 replies; 3+ messages in thread
From: Nebojsa Trpkovic @ 2004-12-20 15:05 UTC (permalink / raw)
To: cpufreq
[-- Attachment #1: Type: text/plain, Size: 791 bytes --]
Here is patch I have used with my Barton moded to mobile. I was
succesful at using multiplicators such as 5, 6, 7, 8, 9 and 10.5. I have
a little bit of trouble with 3, 4 and 11.
Patch is writen by member of this list, and I just can't recall his
name. Maybe you could look back in october/november mails to find out.
You must compile it as a module and load it with line similar to this:
modprobe powernow-k7 overwrite_table=1 multiplier=50,60,70,80,90,105
switch_latency=650
Try chinging switch_latency. I give you no worranty to your hardware :D
Patch is attached. I think it was writen for 2.6.7, but I've used it on
2.6.8 and 2.6.9 as well (manual patching). As powernow-k7.c differs from
kernel to kernel you will porbably have to insert those lines manualy
where they belong:
[-- Attachment #2: powernow-k7.patch --]
[-- Type: text/plain, Size: 9213 bytes --]
--- arch/i386/kernel/cpu/cpufreq/powernow-k7.c.orig 2004-08-14 07:36:12.000000000 +0200
+++ arch/i386/kernel/cpu/cpufreq/powernow-k7.c 2004-10-03 18:20:56.000000000 +0200
@@ -76,28 +76,50 @@
};
#endif
-/* divide by 1000 to get VID. */
+/* divide by 1000 to get VCore voltage in V. */
static int mobile_vid_table[32] = {
2000, 1950, 1900, 1850, 1800, 1750, 1700, 1650,
1600, 1550, 1500, 1450, 1400, 1350, 1300, 0,
1275, 1250, 1225, 1200, 1175, 1150, 1125, 1100,
- 1075, 1050, 1024, 1000, 975, 950, 925, 0,
+ 1075, 1050, 1025, 1000, 975, 950, 925, 0,
};
-/* divide by 10 to get FID. */
+/* divide by 10 to get multiplier. */
static int fid_codes[32] = {
110, 115, 120, 125, 50, 55, 60, 65,
70, 75, 80, 85, 90, 95, 100, 105,
30, 190, 40, 200, 130, 135, 140, 210,
- 150, 225, 160, 165, 170, 180, -1, -1,
+ 150, 220, 160, 165, 170, 180, -1, -1,
};
+/* translation table for even multiplier to fid */
+static int even_multiplier[20]= {
+ 16, 18, 4, 6, 8, 10, 12, 14, // 3, 4, 5, 6, 7 ,8 , 9, 10
+ 0, 2, 20, 22, 24, 26, 28, 29, // 11, 12, 13, 14, 15, 16, 17, 18
+ 17, 19, 23, 25, // 19, 20, 21, 22
+};
+
+/* translation table for odd multiplier to fid*/
+static int odd_multiplier[9]={
+ 5, 7, 9, 11, 13, 15, 1, 3, // 5.5, 6.5, 7.5, 8.5, 9.5, 10.5, 11.5, 12.5
+ 21, // 13.5
+};
+
+
/* This parameter is used in order to force ACPI instead of legacy method for
* configuration purpose.
*/
static int acpi_force;
+/* This parameters can be used to manually overwrite the tables */
+static int overwrite_table = 0;
+#define MAX_PST 10
+static int maxPSTSize = MAX_PST;
+static int multiplier[MAX_PST]= {[0 ... (MAX_PST - 1)] = 0};
+static int voltage[MAX_PST]= {[0 ... (MAX_PST - 1)] = 0};
+static int switch_latency=0;
+
static struct cpufreq_frequency_table *powernow_table;
static unsigned int can_scale_bus;
@@ -414,6 +436,131 @@
}
#endif
+static int powernow_manual_settings(union msr_fidvidstatus *fidvidstatus)
+{
+ int i,k, validentry;
+ unsigned int max_multiplier, max_voltage;
+ unsigned int speed, cm;
+ u8 vid, fid;
+ static struct cpufreq_frequency_table *powernow_table_tmp;
+
+ if (switch_latency > 0) {
+ if (switch_latency < 100) {
+ printk (KERN_INFO PFX "Settling time passed as %d microseconds."
+ "Should be at least 100. Correcting.\n", switch_latency);
+ switch_latency = 100;
+ }
+ latency = switch_latency;
+ } else {
+ latency = 200;
+ }
+ dprintk (KERN_INFO PFX "Settling Time: %d microseconds.\n", latency);
+
+ /* get number of specified multipliers */
+ for (i=0; i< MAX_PST; i++) {
+ if (multiplier[i] == 0) {
+ number_scales=i;
+ break;
+ }
+ }
+
+ /* get maximum values */
+ max_multiplier = fid_codes[fidvidstatus->bits.MFID];
+ max_voltage = mobile_vid_table[fidvidstatus->bits.MVID];
+
+ /* allocate memory */
+ powernow_table=kmalloc((sizeof(struct cpufreq_frequency_table) * (number_scales + 1)), GFP_KERNEL);
+ if (!powernow_table)
+ return -ENOMEM;
+ memset(powernow_table,0,(sizeof(struct cpufreq_frequency_table)*(number_scales+1)));
+
+ k=0;
+ for(i=0; i<number_scales; i++)
+ {
+ validentry = 0;
+ if (multiplier[i] != 0) {
+ /* fix multiplier */
+ if (multiplier[i] < 30)
+ multiplier[i]=multiplier[i] * 10;
+
+ if (multiplier[i] < max_multiplier) {
+ cm = (multiplier[i]/10);
+ /* check if odd or even muliplier */
+ if (multiplier[i]%10) {
+ /* odd multiplier */
+ if (cm == 16) {
+ /* hardcoded because 14.5 and 15.5 fids not possible */
+ fid = 27;
+ validentry = 1;
+ }else if ((cm > 4) && (cm < 14)) {
+ fid= odd_multiplier[cm-5];
+ validentry = 1;
+ }
+ } else {
+ /* even_multiplier */
+ if ((cm < 23) && (cm > 2)) {
+ fid = even_multiplier[cm-3];
+ validentry=1;
+ }
+ }
+ }
+ }
+
+ if (validentry) {
+ /* if no voltage specified use CPU default */
+ if (voltage[i] == 0)
+ voltage[i] = max_voltage;
+
+ /* we do not allow higher voltages than the CPU's maximum
+ 925 mV is the minimum */
+ if ((voltage[i] <= max_voltage) && (voltage[i] >= 925)) {
+ if (voltage[i] >= 1300) {
+ vid = 40 - (voltage[i]/50);
+ } else {
+ vid = 67 - (voltage[i]/25);
+ }
+ /* calculate speed */
+ speed = fsb * fid_codes[fid] / 10;
+ powernow_table[k].frequency = speed;
+ powernow_table[k].index=fid; /*lower 8 bits*/
+ powernow_table[k].index|= (vid << 8); /*upper 8 bits*/
+
+ if (speed < minimum_speed)
+ minimum_speed = speed;
+ if (speed > maximum_speed)
+ maximum_speed = speed;
+
+ dprintk (KERN_INFO PFX " FID: 0x%x (%d.%dx [%dMHz])\t", fid, fid_codes[fid] / 10, fid_codes[fid] % 10, speed/1000);
+ dprintk ("VID: 0x%x (%d.%03dV)\n", vid, mobile_vid_table[vid]/1000, mobile_vid_table[vid]%1000);
+ k++;
+ }
+ } else {
+ // invalid entry
+ dprintk (KERN_INFO PFX "Entry %d is invalid\n", i+1);
+ }
+ }
+
+ if (k < number_scales) {
+ /* some entrys were invalid need to realloc table */
+ number_scales = k;
+ powernow_table_tmp = kmalloc((sizeof(struct cpufreq_frequency_table) * (number_scales + 1)), GFP_KERNEL);
+ if (!powernow_table_tmp) {
+ kfree(powernow_table);
+ return -ENOMEM;
+ }
+ memcpy(powernow_table_tmp,powernow_table,(sizeof(struct cpufreq_frequency_table) * (number_scales + 1)));
+ kfree(powernow_table);
+ powernow_table=powernow_table_tmp;
+ }
+
+
+ /* Terminate frequency list */
+ powernow_table[number_scales].frequency = CPUFREQ_TABLE_END;
+ powernow_table[number_scales].index = 0;
+
+ return 0;
+}
+
static int powernow_decode_bios (int maxfid, int startvid)
{
struct psb_s *psb;
@@ -601,6 +748,11 @@
if (dmi_check_system(powernow_dmi_table) || acpi_force) {
printk (KERN_INFO PFX "PSB/PST known to be broken. Trying ACPI instead\n");
result = powernow_acpi_init();
+ }
+ else if (overwrite_table){
+ printk(KERN_INFO PFX "Overwriting PST table with manual settings\n");
+ result = powernow_manual_settings(&fidvidstatus);
+
} else {
result = powernow_decode_bios(fidvidstatus.bits.MFID, fidvidstatus.bits.SVID);
if (result) {
@@ -681,6 +833,14 @@
module_param(acpi_force, int, 0444);
MODULE_PARM_DESC(acpi_force, "Force ACPI to be used");
+module_param(overwrite_table,int,0444);
+MODULE_PARM_DESC(overwrite_table, "overwrite table with manually settings");
+module_param_array(multiplier, int, maxPSTSize, 0444);
+MODULE_PARM_DESC(multiplier, "Specifiy up to 10 multipliers, multiply them by 10: 5->50, 5.5->55");
+module_param_array(voltage, int, maxPSTSize, 0444);
+MODULE_PARM_DESC(voltage, "Specify voltages in respect to the given multipliers, specify them in mV: 1.275V -> 1275");
+module_param(switch_latency, int, 0444);
+MODULE_PARM_DESC(switch_latency, "Set state transition latency in microseconds (default 200us)");
MODULE_AUTHOR ("Dave Jones <davej@codemonkey.org.uk>");
MODULE_DESCRIPTION ("Powernow driver for AMD K7 processors.");
@@ -688,4 +848,3 @@
late_initcall(powernow_init);
module_exit(powernow_exit);
-
[-- Attachment #3: Type: text/plain, Size: 143 bytes --]
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [ANNOUNCE] cpufrequtils-0.1 released
@ 2004-12-18 21:24 Harald Milz
2004-12-19 10:57 ` Custom powerstates table in powernow-K7 ? Alex Simonov
0 siblings, 1 reply; 3+ messages in thread
From: Harald Milz @ 2004-12-18 21:24 UTC (permalink / raw)
To: cpufreq
Dominik Brodowski <linux@dominikbrodowski.de> wrote:
> cpufrequtils-0.1 is out and available at
> http://www.kernel.org/pub/linux/utils/kernel/cpufreq/cpufrequtils-0.1.tar.bz2
The message
3. FREQuencies must be passed in kHz = 1000 MHz = 1000000 GHz.
is nice, mathematically :-)) But it's confusing... What you probably mean
is
3. FREQuencies must be passed in kHz =^ MHz * 1,000 =^ GHz * 1,000,000
The README isn't of very much help either.
--
"We demand rigidly defined areas of doubt and uncertainty!"
-- Vroomfondel
^ permalink raw reply [flat|nested] 3+ messages in thread
* Custom powerstates table in powernow-K7 ?
2004-12-18 21:24 [ANNOUNCE] cpufrequtils-0.1 released Harald Milz
@ 2004-12-19 10:57 ` Alex Simonov
2004-12-20 12:50 ` Bruno Ducrot
0 siblings, 1 reply; 3+ messages in thread
From: Alex Simonov @ 2004-12-19 10:57 UTC (permalink / raw)
To: cpufreq
Hi all,
Is there any simple way to use the powernow-k7
driver with custom PST? Until now (kernel 2.6.3)
I've always used to patch the module, hardwiring
my own PST table for my Mobile Athlon XP 1900+,
but with 2.6.8 kernels it seems more complex,
with all this ACPI stuff added to it. It is not
enough anymore to patch the
powernow_decode_bios (int maxfid, int startvid)
function any more ..:(
Could you give me some hints please? May be there
is opportunity to pass it as a parameter to the
cpufreq module? Or a way to integrate it in the
initrd.img?
Thanks a lot in advance,
Alex
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Custom powerstates table in powernow-K7 ?
2004-12-19 10:57 ` Custom powerstates table in powernow-K7 ? Alex Simonov
@ 2004-12-20 12:50 ` Bruno Ducrot
0 siblings, 0 replies; 3+ messages in thread
From: Bruno Ducrot @ 2004-12-20 12:50 UTC (permalink / raw)
To: Alex Simonov; +Cc: cpufreq
On Sun, Dec 19, 2004 at 02:57:43AM -0800, Alex Simonov wrote:
> Hi all,
>
> Is there any simple way to use the powernow-k7
> driver with custom PST? Until now (kernel 2.6.3)
> I've always used to patch the module, hardwiring
> my own PST table for my Mobile Athlon XP 1900+,
> but with 2.6.8 kernels it seems more complex,
> with all this ACPI stuff added to it. It is not
> enough anymore to patch the
> powernow_decode_bios (int maxfid, int startvid)
> function any more ..:(
At first, are you sure going with ACPI didn't help? If that is the
case, I don't see the difficulty to do what you ask, especially if you
have already done such hack (ACPI is a fallback, so unless your laptop
is in a DMI blacklist, hacking powernow_decode_bios() should work).
> Could you give me some hints please? May be there
> is opportunity to pass it as a parameter to the
> cpufreq module? Or a way to integrate it in the
> initrd.img?
I'm afraid nobody will integrate that in mainline.
Cheers,
--
Bruno Ducrot
-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-12-20 15:05 Custom powerstates table in powernow-K7 ? Nebojsa Trpkovic
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2004-12-18 21:24 [ANNOUNCE] cpufrequtils-0.1 released Harald Milz
2004-12-19 10:57 ` Custom powerstates table in powernow-K7 ? Alex Simonov
2004-12-20 12:50 ` Bruno Ducrot
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