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fs_enet: Fix SCC Ethernet on CPM2, and crash in fs_enet_rx_napi()

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Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Heiko Schocher 2008-08-25 20:20:53 -05:00 • committed by Jeff Garzik
parent 34a20e8973
commit f4f62301c6
3 changed files with 20 additions and 1 deletions
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5
arch/powerpc/include/asm/cpm2.h
View file

@ -337,6 +337,11 @@ typedef struct scc_param {
uint scc_tcrc; /* Internal */
} sccp_t;
/* Function code bits.
*/
#define SCC_EB ((u_char) 0x10) /* Set big endian byte order */
#define SCC_GBL ((u_char) 0x20) /* Snooping enabled */
/* CPM Ethernet through SCC1.
*/
typedef struct scc_enet {

8
drivers/net/fs_enet/fs_enet-main.c
View file

@ -792,6 +792,10 @@ static int fs_enet_open(struct net_device *dev)
int r;
int err;
/* to initialize the fep->cur_rx,... */
/* not doing this, will cause a crash in fs_enet_rx_napi */
fs_init_bds(fep->ndev);
if (fep->fpi->use_napi)
napi_enable(&fep->napi);
@ -1167,6 +1171,10 @@ static struct of_device_id fs_enet_match[] = {
.compatible = "fsl,cpm1-scc-enet",
.data = (void *)&fs_scc_ops,
},
{
.compatible = "fsl,cpm2-scc-enet",
.data = (void *)&fs_scc_ops,
},
#endif
#ifdef CONFIG_FS_ENET_HAS_FCC
{

8
drivers/net/fs_enet/mac-scc.c
View file

@ -47,7 +47,6 @@
#include "fs_enet.h"
/*************************************************/
#if defined(CONFIG_CPM1)
/* for a 8xx __raw_xxx's are sufficient */
#define __fs_out32(addr, x) __raw_writel(x, addr)
@ -62,6 +61,8 @@
#define __fs_out16(addr, x) out_be16(addr, x)
#define __fs_in32(addr) in_be32(addr)
#define __fs_in16(addr) in_be16(addr)
#define __fs_out8(addr, x) out_8(addr, x)
#define __fs_in8(addr) in_8(addr)
#endif
/* write, read, set bits, clear bits */
@ -262,8 +263,13 @@ static void restart(struct net_device *dev)
/* Initialize function code registers for big-endian.
*/
#ifndef CONFIG_NOT_COHERENT_CACHE
W8(ep, sen_genscc.scc_rfcr, SCC_EB | SCC_GBL);
W8(ep, sen_genscc.scc_tfcr, SCC_EB | SCC_GBL);
#else
W8(ep, sen_genscc.scc_rfcr, SCC_EB);
W8(ep, sen_genscc.scc_tfcr, SCC_EB);
#endif
/* Set maximum bytes per receive buffer.
* This appears to be an Ethernet frame size, not the buffer