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Commit 6b61e69e authored by Tim Yamin's avatar Tim Yamin Committed by Grant Likely
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powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver 



This patch adds MDMA/UDMA support using BestComm for DMA on the MPC5200
platform.  Based heavily on previous work by Freescale (Bernard Kuhn,
John Rigby) and Domen Puncer.

With this patch, a SanDisk Extreme IV CF card gets read speeds of
approximately 26.70 MB/sec.

Signed-off-by: default avatarTim Yamin <plasm@roo.me.uk>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent aaab5e83

arch/powerpc/sysdev/bestcomm/ata.h

+5 −12
Original line number Original line Diff line number Diff line
@@ -20,18 +20,11 @@ struct bcom_ata_bd { 
	u32	dst_pa;

	u32	dst_pa;

};

};





extern struct bcom_task *

extern struct bcom_task * bcom_ata_init(int queue_len, int maxbufsize);

bcom_ata_init(int queue_len, int maxbufsize);

extern void bcom_ata_rx_prepare(struct bcom_task *tsk);



extern void bcom_ata_tx_prepare(struct bcom_task *tsk);

extern void

extern void bcom_ata_reset_bd(struct bcom_task *tsk);

bcom_ata_rx_prepare(struct bcom_task *tsk);

extern void bcom_ata_release(struct bcom_task *tsk);



extern void

bcom_ata_tx_prepare(struct bcom_task *tsk);



extern void

bcom_ata_reset_bd(struct bcom_task *tsk);







#endif /* __BESTCOMM_ATA_H__ */

#endif /* __BESTCOMM_ATA_H__ */

drivers/ata/Kconfig

+2 −1
Original line number Original line Diff line number Diff line
@@ -456,7 +456,8 @@ config PATA_MARVELL 




config PATA_MPC52xx

config PATA_MPC52xx

	tristate "Freescale MPC52xx SoC internal IDE"

	tristate "Freescale MPC52xx SoC internal IDE"

	depends on PPC_MPC52xx

	depends on PPC_MPC52xx && PPC_BESTCOMM

	select PPC_BESTCOMM_ATA

	help

	help

	  This option enables support for integrated IDE controller

	  This option enables support for integrated IDE controller

	  of the Freescale MPC52xx SoC.

	  of the Freescale MPC52xx SoC.

drivers/ata/pata_mpc52xx.c

+481 −65

File changed.

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