[PATCH 1/1] Big endian swap for Marvell 6440 SAS driver
From: Cédric Cano <hidden>
Date: 2011-06-10 17:51:49
Hi, Marvell SAS driver doesn't work on powerpc architecture due to big endian swap. I've tested it with the MV6440 chip. Here you can find the patch for Linux 2.6.39.1. Cedric Cano Signed-off-by: Cedric Cano <redacted> ---
--- drivers/scsi/mvsas/mv_sas.c 2011-06-10 15:50:04.000000000 +0200
+++ drivers/scsi/mvsas/mv_sas.c 2011-06-10 15:50:12.000000000 +0200@@ -1143,6 +1143,14 @@ MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0); s[0] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i); + /* swap for big endian devices because of use of these data in bytes */ +#ifdef __BIG_ENDIAN + s[0] = swab32(s[0]); + s[1] = swab32(s[1]); + s[2] = swab32(s[2]); + s[3] = swab32(s[3]); +#endif /* __BIG_ENDIAN */ + /* Workaround: take some ATAPI devices for ATA */ if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01)) s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
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