Re: [Qemu-devel] [PULL 18/19] macio: move unaligned DMA write code into separate pmac_dma_write() function

[Aurelien Jarno <aurelien@aurel32.net>]

On 2015-05-22 15:59, John Snow wrote:
> From: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> 
> Similarly switch the macio IDE routines over to use the new function and
> tidy-up the remaining code as required.
> 
> [Maintainer edit: printf format codes adjusted for 32/64bit. --js]
> 
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> Acked-by: John Snow <jsnow@redhat.com>
> Message-id: 1425939893-14404-3-git-send-email-mark.cave-ayland@ilande.co.uk
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
>  hw/ide/macio.c             | 268 +++++++++++++++++++++------------------------
>  include/hw/ppc/mac_dbdma.h |   4 -
>  2 files changed, 125 insertions(+), 147 deletions(-)

This patch has removed TRIM support without any obvious reason, and
without mentioning it in the changelog. As a consequence guests with
TRIM enabled now fail to boot:

| [   46.916047] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
| [   46.916545] ata1.00: failed command: DATA SET MANAGEMENT
| [   46.916794] ata1.00: cmd 06/01:01:00:00:00/00:00:00:00:00/a0 tag 0 dma 512 out
| [   46.916794]          res 40/00:01:00:00:00/00:00:00:00:00/e0 Emask 0x20 (host bus error)
| [   46.917219] ata1.00: status: { DRDY }
| [   51.957389] ata1.00: qc timeout (cmd 0xec)
| [   51.958076] ata1.00: failed to IDENTIFY (I/O error, err_mask=0x4)
| [   51.958551] ata1.00: revalidation failed (errno=-5)
| [   56.996713] ata1: link is slow to respond, please be patient (ready=0)
| [   61.981042] ata1: device not ready (errno=-16), forcing hardreset
| [   61.981669] ata1: soft resetting link
| [   62.137894] ata1.00: configured for MWDMA2
| [   62.138294] ata1.00: device reported invalid CHS sector 0
| [   62.139045] sd 0:0:0:0: [sda]  
| [   62.139128] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
| [   62.139243] sd 0:0:0:0: [sda]  
| [   62.139346] Sense Key : Aborted Command [current] [descriptor]
| [   62.139581] Descriptor sense data with sense descriptors (in hex):
| [   62.139670]         72 0b 00 00 00 00 00 0c 00 0a 80 00 00 00 00 00 
| [   62.139812]         00 00 00 00 
| [   62.139897] sd 0:0:0:0: [sda]  
| [   62.140009] Add. Sense: No additional sense information
| [   62.140115] sd 0:0:0:0: [sda] CDB: 
| [   62.140204] Write same(16): 93 08 00 00 00 00 03 c0 00 48 00 3f ff b8 00 00
| [   62.140661] end_request: I/O error, dev sda, sector 62914632
| [   62.141270] ata1: EH complete

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien@aurel32.net                 http://www.aurel32.net