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authorraghavendra.koushik@neterion.com <raghavendra.koushik@neterion.com>2005-08-03 12:41:38 -0700
committerJeff Garzik <jgarzik@pobox.com>2005-08-11 00:10:46 -0400
commit303bcb4b675d7284a1097dd1c18c995c0179883a (patch)
tree1ac3e3adc6deb4f0c6c5ba987adcc28b66fa2f64 /drivers/net/phy/phy_device.c
parent0b1f7ebe455ba4f1f46e7024150eeddbbf08addc (diff)
downloadlinux-linaro-android-303bcb4b675d7284a1097dd1c18c995c0179883a.tar.gz
[PATCH] S2io: Errors found during review
Hi, This is a patch to incorporate comments from earlier 12 patches. It also fixes a few issues we found during this time. Following is a list of changes in this patch. Item 1 incorporates earlier comments. Issues addressed in items 2 to 4 were discovered recently. 1. wmb() call in s2io_xmit() replaced with mmiowb(). 2. The dtx_control register was earlier programmed incorrectly for Xframe II adapter. 3. As suggested by hardware team, after a reset, in case of Xframe II adapter, we clear certain spurious errors by clearing PCI-X ECC status register, "detected parity error" bit in PCI_STATUS register and PCI_STATUS bit in txpic_int register. 4. On IBM PPC platforms, we found that in the Rx buffer replenish function, two memory writes(one to the the descriptor length and another to the ownership) were getting reordered. This was causing the adapter to see the ownership transfered to it before the length was updated. One solution was to add a wmb() but since this would turnout expensive on some platforms if called for every descriptor, we set the ownership bit and other fields of '2' to 'N' Rx descriptors followed by a wmb() and then set the ownership of first descriptor ('1'). Here the value 'N' is configurable by making it a module loadable parameter (rxsync_frequency). (NOTE: This parameter is a power of 2). 5. Bumped up the driver version no. to 2.0.2.1 Signed-off-by: Ravinandan Arakali <ravinandan.arakali@neterion.com> Signed-off-by: Raghavendra Koushik <raghavendra.koushik@neterion.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
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