Re: [PATCH] smsc-ircc2: Add PnP support.

[matthieu castet <castet.matthieu@free.fr>]

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Hi,
Meelis Roos wrote:
>> That's because resource point at the end of the resources list, so 
>> there is nothing to read. With this patch, you should see something.
> 
> 
> On bootup there are loads on lines 167 and 472.
> 
> On auto there are none.
> 
> On activate there are
> ******846*******
> pnp: Device 00:0a activated.
> 
> On modprobe smsc-ircc2 there are no more debug lines, just
> found SMC SuperIO Chip (devid=0x5a rev=00 base=0x002e): LPC47N227
> smsc_superio_flat(): IrDA not enabled
> smsc_superio_flat(): fir: 0x00, sir: 0x00, dma: 15, irq: 0, mode: 0x02
> 
> And I checked that I am using the new patch.
> 
thanks.
it seems there is no resource in your __CRS. Like Shaohua said the acpi 
spec say that it must return valid template even if the device is 
disable [1].

Just for confirmation, could you try this patch. It should enable 
pnp_dbg message and print your _CRS when you activate the device.
If there is nothing between ******574******* and ******857*******, you 
bios is likely broken.


thanks

Matthieu CASTET



[1]
If a device is disabled, then _CRS returns a valid resource template for 
the device, but the actual
resource assignments in the return byte stream are ignored. If the 
device is disabled when _CRS is called, it
must remain disabled.


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--- linux-2.6.9/drivers/pnp/pnpacpi/rsparser.c.int	2004-11-27 01:46:10.000000000 +0100
+++ linux-2.6.9/drivers/pnp/pnpacpi/rsparser.c	2004-11-27 14:11:32.000000000 +0100
@@ -29,6 +29,22 @@
 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
 #endif
 
+static int first = 1;
+static void debug_pnp(struct acpi_resource *res, int line) {
+	int tmp = acpi_dbg_level;
+	int tmp1 = acpi_dbg_layer;
+	if (!first)
+		return;
+	first = 0;
+
+	acpi_dbg_level = 0x00010000;
+	acpi_dbg_layer = 0x00000100;
+	printk("******%d*******\n",line);
+	ACPI_DUMP_RESOURCE_LIST(res);
+	acpi_dbg_level = tmp;
+	acpi_dbg_layer = tmp1;
+}
+	
 /*
  * Allocated Resources
  */
@@ -152,6 +168,8 @@
 {
 	struct pnp_resource_table * res_table = (struct pnp_resource_table *)data;
 
+	debug_pnp(res,__LINE__);
+
 	switch (res->id) {
 	case ACPI_RSTYPE_IRQ:
 		if ((res->data.irq.number_of_interrupts > 0) &&
@@ -233,6 +251,7 @@
 	/* Blank the resource table values */
 	pnp_init_resource_table(res);
 
+	first = 1;
 	return acpi_walk_resources(handle, METHOD_NAME__CRS, pnpacpi_allocated_resource, res);
 }
 
@@ -455,6 +474,8 @@
 	struct pnp_dev *dev = parse_data->dev;
 	struct pnp_option *option = parse_data->option;
 
+	//debug_pnp(res,__LINE__);
+
 	switch (res->id) {
 		case ACPI_RSTYPE_IRQ:
 			pnpacpi_parse_irq_option(option, &res->data.irq);
@@ -535,6 +556,7 @@
 		return AE_ERROR;
 	parse_data.independent_option = parse_data.option;
 	parse_data.dev = dev;
+	first=1;
 	status = acpi_walk_resources(handle, METHOD_NAME__PRS, 
 		pnpacpi_option_resource, &parse_data);
 
@@ -548,6 +570,9 @@
 	void *data)
 {
 	int *res_cnt = (int *)data;
+
+	debug_pnp(res,__LINE__);
+
 	switch (res->id) {
 	case ACPI_RSTYPE_IRQ:
 	case ACPI_RSTYPE_EXT_IRQ:
@@ -603,6 +628,7 @@
 	int res_cnt = 0;
 	acpi_status status;
 
+	first = 1;
 	status = acpi_walk_resources(handle, METHOD_NAME__CRS, 
 		pnpacpi_count_resources, &res_cnt);
 	if (ACPI_FAILURE(status)) {
@@ -765,6 +791,7 @@
 	/* pnpacpi_build_resource_template allocates extra mem */
 	int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1;
 	struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer;
+	struct acpi_resource *res = resource;
 	int port = 0, irq = 0, dma = 0, mem = 0;
 
 	pnp_dbg("res cnt %d", res_cnt);
@@ -826,5 +853,8 @@
 		resource ++;
 		i ++;
 	}
+	first=1;
+	debug_pnp(res,__LINE__);
+
 	return 0;
 }
--- linux-2.6.9/drivers/pnp/pnpacpi/pnpacpi.h.old	2004-11-27 14:54:22.000000000 +0100
+++ linux-2.6.9/drivers/pnp/pnpacpi/pnpacpi.h	2004-11-27 14:14:00.000000000 +0100
@@ -1,6 +1,8 @@
 #ifndef ACPI_PNP_H
 #define ACPI_PNP_H
 
+#define DEBUG
+
 #include <acpi/acpi_bus.h>
 #include <linux/acpi.h>
 #include <linux/pnp.h>