forked from Minki/linux
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
#ifndef _IBM_EMAC_MAL_H
|
|
#define _IBM_EMAC_MAL_H
|
|
|
|
#include <linux/list.h>
|
|
|
|
#define MAL_DT_ALIGN (4096) /* Alignment for each channel's descriptor table */
|
|
|
|
#define MAL_CHAN_MASK(chan) (0x80000000 >> (chan))
|
|
|
|
/* MAL Buffer Descriptor structure */
|
|
struct mal_descriptor {
|
|
unsigned short ctrl; /* MAL / Commac status control bits */
|
|
short data_len; /* Max length is 4K-1 (12 bits) */
|
|
unsigned char *data_ptr; /* pointer to actual data buffer */
|
|
} __attribute__ ((packed));
|
|
|
|
/* the following defines are for the MadMAL status and control registers. */
|
|
/* MADMAL transmit and receive status/control bits */
|
|
#define MAL_RX_CTRL_EMPTY 0x8000
|
|
#define MAL_RX_CTRL_WRAP 0x4000
|
|
#define MAL_RX_CTRL_CM 0x2000
|
|
#define MAL_RX_CTRL_LAST 0x1000
|
|
#define MAL_RX_CTRL_FIRST 0x0800
|
|
#define MAL_RX_CTRL_INTR 0x0400
|
|
|
|
#define MAL_TX_CTRL_READY 0x8000
|
|
#define MAL_TX_CTRL_WRAP 0x4000
|
|
#define MAL_TX_CTRL_CM 0x2000
|
|
#define MAL_TX_CTRL_LAST 0x1000
|
|
#define MAL_TX_CTRL_INTR 0x0400
|
|
|
|
struct mal_commac_ops {
|
|
void (*txeob) (void *dev, u32 chanmask);
|
|
void (*txde) (void *dev, u32 chanmask);
|
|
void (*rxeob) (void *dev, u32 chanmask);
|
|
void (*rxde) (void *dev, u32 chanmask);
|
|
};
|
|
|
|
struct mal_commac {
|
|
struct mal_commac_ops *ops;
|
|
void *dev;
|
|
u32 tx_chan_mask, rx_chan_mask;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct ibm_ocp_mal {
|
|
int dcrbase;
|
|
|
|
struct list_head commac;
|
|
u32 tx_chan_mask, rx_chan_mask;
|
|
|
|
dma_addr_t tx_phys_addr;
|
|
struct mal_descriptor *tx_virt_addr;
|
|
|
|
dma_addr_t rx_phys_addr;
|
|
struct mal_descriptor *rx_virt_addr;
|
|
};
|
|
|
|
#define GET_MAL_STANZA(base,dcrn) \
|
|
case base: \
|
|
x = mfdcr(dcrn(base)); \
|
|
break;
|
|
|
|
#define SET_MAL_STANZA(base,dcrn, val) \
|
|
case base: \
|
|
mtdcr(dcrn(base), (val)); \
|
|
break;
|
|
|
|
#define GET_MAL0_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL_BASE,dcrn)
|
|
#define SET_MAL0_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL_BASE,dcrn,val)
|
|
|
|
#ifdef DCRN_MAL1_BASE
|
|
#define GET_MAL1_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL1_BASE,dcrn)
|
|
#define SET_MAL1_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL1_BASE,dcrn,val)
|
|
#else /* ! DCRN_MAL1_BASE */
|
|
#define GET_MAL1_STANZA(dcrn)
|
|
#define SET_MAL1_STANZA(dcrn,val)
|
|
#endif
|
|
|
|
#define get_mal_dcrn(mal, dcrn) ({ \
|
|
u32 x; \
|
|
switch ((mal)->dcrbase) { \
|
|
GET_MAL0_STANZA(dcrn) \
|
|
GET_MAL1_STANZA(dcrn) \
|
|
default: \
|
|
x = 0; \
|
|
BUG(); \
|
|
} \
|
|
x; })
|
|
|
|
#define set_mal_dcrn(mal, dcrn, val) do { \
|
|
switch ((mal)->dcrbase) { \
|
|
SET_MAL0_STANZA(dcrn,val) \
|
|
SET_MAL1_STANZA(dcrn,val) \
|
|
default: \
|
|
BUG(); \
|
|
} } while (0)
|
|
|
|
static inline void mal_enable_tx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
|
|
{
|
|
set_mal_dcrn(mal, DCRN_MALTXCASR,
|
|
get_mal_dcrn(mal, DCRN_MALTXCASR) | chanmask);
|
|
}
|
|
|
|
static inline void mal_disable_tx_channels(struct ibm_ocp_mal *mal,
|
|
u32 chanmask)
|
|
{
|
|
set_mal_dcrn(mal, DCRN_MALTXCARR, chanmask);
|
|
}
|
|
|
|
static inline void mal_enable_rx_channels(struct ibm_ocp_mal *mal, u32 chanmask)
|
|
{
|
|
set_mal_dcrn(mal, DCRN_MALRXCASR,
|
|
get_mal_dcrn(mal, DCRN_MALRXCASR) | chanmask);
|
|
}
|
|
|
|
static inline void mal_disable_rx_channels(struct ibm_ocp_mal *mal,
|
|
u32 chanmask)
|
|
{
|
|
set_mal_dcrn(mal, DCRN_MALRXCARR, chanmask);
|
|
}
|
|
|
|
extern int mal_register_commac(struct ibm_ocp_mal *mal,
|
|
struct mal_commac *commac);
|
|
extern int mal_unregister_commac(struct ibm_ocp_mal *mal,
|
|
struct mal_commac *commac);
|
|
|
|
extern int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel,
|
|
unsigned long size);
|
|
|
|
#endif /* _IBM_EMAC_MAL_H */
|