Re: 2.5.75-mm1 yenta-socket lsPCI IRQ reads incorrect

[Michael Frank <mflt1@micrologica.com.hk>]

On Monday 14 July 2003 22:50, Russell King wrote:
> On Mon, Jul 14, 2003 at 07:37:29PM +0800, Michael Frank wrote:
> > On Monday 14 July 2003 19:01, Russell King wrote:
> > > On Mon, Jul 14, 2003 at 05:28:24PM +0800, Michael Frank wrote:
> > > > Very funny - suspend/resume is not implemented ;)
> > >
> > > It hasn't been implemented properly for a long long time.
> > >
> > > I think I have all the bits necessary, but need testers willing to
> > > try stuff out.  I'll produce a patch in the next couple of days.
> >
> > Thank you, I look forward to testing it.
>
> Ok, this is a rudimentary insertion of the pci_save_state/pci_restore_state
> calls into yenta_socket.c.  This should result in the first 64 bytes
> of config space being saved and restored over suspend/resume cycles.
>

Applied to 2.5.75-mm1 + test patch below which also prints pci irq @0x3c

problems seen:

- yenta_probe pci_save_state saves irq as ff. Moved to end of function, result same  
- both swsusp and ACPI/S3 do _not_ call yenta_suspend and yenta_init, so it still 
  wont work

Test Patch:
diff -uN drivers/pcmcia/yenta_socket.c.orig drivers/pcmcia/yenta_socket.c
--- drivers/pcmcia/yenta_socket.c.orig  2003-07-15 12:39:52.000000000 +0800
+++ drivers/pcmcia/yenta_socket.c       2003-07-15 13:17:39.000000000 +0800
@@ -577,7 +577,9 @@
        struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);

        pci_set_power_state(socket->dev, 0);
-       pci_restore_state(socket->dev, socket->saved_state);
+	printk("Yenta: init restore state %x\n",(u8)socket->saved_state[0xf]);
+
+	pci_restore_state(socket->dev, socket->saved_state);

        yenta_config_init(socket);
        yenta_clear_maps(socket);
@@ -596,6 +598,7 @@
        /* Disable interrupts */
        cb_writel(socket, CB_SOCKET_MASK, 0x0);

+	printk("Yenta: suspend save state %x\n",(u8)socket->saved_state[0xf]);
        pci_save_state(socket->dev, socket->saved_state);

        /*
@@ -867,8 +870,6 @@
        /* Set up the bridge regions.. */
        yenta_allocate_resources(socket);

-       pci_save_state(dev, socket->saved_state);
-
        socket->cb_irq = dev->irq;

        /* Do we have special options for the device? */
@@ -897,6 +898,10 @@
        /* Figure out what the dang thing can do for the PCMCIA layer... */
        yenta_get_socket_capabilities(socket, isa_interrupts);
        printk("Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
+	pci_save_state(dev, socket->saved_state);
+	printk("Yenta: probe saved state %x\n",(u8)socket->saved_state[0xf]);
+	(u8)socket->saved_state[0xf] = socket->cb_irq;
+	printk("Yenta: probe saved state irq fixed %x\n",(u8)socket->saved_state[0xf]);

        /* Register it with the pcmcia layer.. */
        return pcmcia_register_socket(&socket->socket);

Regards
Michael

-- 
Powered by linux-2.5.75-mm1. Compiled with gcc-2.95-3 - mature and rock solid

My current linux related activities:
- 2.5 yenta_socket testing
- Test development and testing of swsusp for 2.4/2.5 and ACPI S3 of 2.5 kernel 
- Everyday usage of 2.5 kernel

More info on 2.5 kernel: http://www.codemonkey.org.uk/post-halloween-2.5.txt
More info on swsusp: http://sourceforge.net/projects/swsusp/