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authorKrzysztof Hałasa <khc@pm.waw.pl>2008-07-09 21:28:45 +0400
committerKrzysztof Hałasa <khc@pm.waw.pl>2008-11-22 04:49:47 +0300
commit0446c3b1e6208c6563ff9a0b22fb3b5e5e3e775c (patch)
treedcfaa55de43edf03a5f3fbf5a8fb080693229eaa /drivers/net/wan/hd64572.c
parentb0942f78dd6493c5590cc80fedd5e3b357a15334 (diff)
downloadlinux-0446c3b1e6208c6563ff9a0b22fb3b5e5e3e775c.tar.xz
WAN: rework HD64572 interrupts a bit.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Diffstat (limited to 'drivers/net/wan/hd64572.c')
-rw-r--r--drivers/net/wan/hd64572.c36
1 files changed, 13 insertions, 23 deletions
diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c
index bdb625080a16..0952e228c2c3 100644
--- a/drivers/net/wan/hd64572.c
+++ b/drivers/net/wan/hd64572.c
@@ -67,19 +67,12 @@ static inline int sca_intr_status(card_t *card)
u8 result = 0;
u32 isr0 = sca_inl(ISR0, card);
- if (isr0 & 0x0000000F) result |= SCA_INTR_DMAC_RX(0);
- if (isr0 & 0x000000F0) result |= SCA_INTR_DMAC_TX(0);
- if (isr0 & 0x00000F00) result |= SCA_INTR_DMAC_RX(1);
- if (isr0 & 0x0000F000) result |= SCA_INTR_DMAC_TX(1);
- if (isr0 & 0x003E0000) result |= SCA_INTR_MSCI(0);
- if (isr0 & 0x3E000000) result |= SCA_INTR_MSCI(1);
-
- if (!(result & SCA_INTR_DMAC_TX(0)))
- if (sca_in(DSR_TX(0), card) & DSR_EOM)
- result |= SCA_INTR_DMAC_TX(0);
- if (!(result & SCA_INTR_DMAC_TX(1)))
- if (sca_in(DSR_TX(1), card) & DSR_EOM)
- result |= SCA_INTR_DMAC_TX(1);
+ if (isr0 & 0x00000002) result |= SCA_INTR_DMAC_RX(0);
+ if (isr0 & 0x00000020) result |= SCA_INTR_DMAC_TX(0);
+ if (isr0 & 0x00000200) result |= SCA_INTR_DMAC_RX(1);
+ if (isr0 & 0x00002000) result |= SCA_INTR_DMAC_TX(1);
+ if (isr0 & 0x00080000) result |= SCA_INTR_MSCI(0);
+ if (isr0 & 0x08000000) result |= SCA_INTR_MSCI(1);
return result;
}
@@ -91,10 +84,9 @@ static inline port_t* dev_to_port(struct net_device *dev)
static inline void enable_intr(port_t *port)
{
- /* DMA & MSCI IRQ enable */
- /* IR0_TXINT | IR0_RXINTA | IR0_DMIB* | IR0_DMIA* */
+ /* enable DMIB and MSCI RXINTA interrupts */
sca_outl(sca_inl(IER0, port->card) |
- (phy_node(port) ? 0x0A006600 : 0x000A0066), IER0, port->card);
+ (phy_node(port) ? 0x08002200 : 0x00080022), IER0, port->card);
}
static inline void disable_intr(port_t *port)
@@ -211,15 +203,14 @@ static void sca_init_port(port_t *port)
sca_outw(HDLC_MAX_MRU, dmac + BFLL, card);
/* Chain mode, Multi-frame */
sca_out(0x14, DMR_RX(phy_node(port)), card);
- sca_out(DIR_EOME | DIR_BOFE, DIR_RX(phy_node(port)),
- card);
+ sca_out(DIR_EOME, DIR_RX(phy_node(port)), card);
/* DMA enable */
sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
} else { /* Transmit */
/* Chain mode, Multi-frame */
sca_out(0x14, DMR_TX(phy_node(port)), card);
/* enable underflow interrupts */
- sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card);
+ sca_out(DIR_EOME, DIR_TX(phy_node(port)), card);
}
}
sca_set_carrier(port);
@@ -502,11 +493,10 @@ static void sca_open(struct net_device *dev)
sca_out(0x3F, msci + TNR1, card); /* +1=TX DMA deactivation condition*/
/* We're using the following interrupts:
- - TXINT (DMAC completed all transmissions and DCD changes)
- - all DMA interrupts
+ - RXINTA (DCD changes only)
+ - DMIB (EOM - single frame transfer complete)
*/
- /* MSCI TXINT and RXINTA interrupt enable */
- sca_outl(IE0_TXINT | IE0_RXINTA | IE0_CDCD, msci + IE0, card);
+ sca_outl(IE0_RXINTA | IE0_CDCD, msci + IE0, card);
sca_out(port->tmc, msci + TMCR, card);
sca_out(port->tmc, msci + TMCT, card);