From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ronald G Minnich <rminnich@lanl.gov>
To: <9fans@cse.psu.edu>
Subject: Re: [9fans] shared memory
In-Reply-To: <Pine.LNX.4.33.0207290751130.4551-100000@snaresland.acl.lanl.gov>
Message-ID: <Pine.LNX.4.33.0207290758260.4551-100000@snaresland.acl.lanl.gov>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Date: Mon, 29 Jul 2002 07:59:35 -0600
Topicbox-Message-UUID: d51b5c44-eaca-11e9-9e20-41e7f4b1d025

I realized that a lot of code I sent you don't really need.



On Mon, 29 Jul 2002, Ronald G Minnich wrote:

struct pci_device pcidev;
int sma_size_bits;
int sma_size_mbytes;
>
> /* find the device */
>         if ((pcidev = pci_find_device(PCI_VENDOR_ID_SI,
> PCI_DEVICE_ID_SI_630, NULL)) == NULL)
>                 return 0;
>
> /* see which banks are enabledd */
>         pci_read_config_byte(pcidev, SIS630_BANKENABLE, &dram_status);
>         dimm_status = dram_status & 0x7;
>
> /* see if shared memory with integrated vga is enabled */
>         sma_enable = dram_status & 0x80;
>
>         /* compute Shared Menory Area (SMA) size in Mega Bytes */
>         sma_size_bits = (dram_status >> 4) & 0x7;
>         if (sma_size_bits > 5)
>                 // this is invalid!
>                 sma_size = 0;
>         else {
>                 sma_size = (2 << sma_size_bits);
>         }
>