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atl1c: remove SMB/CMB DMA related code

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l1c & later chips don't support DMA for SMB.
CMB is removed from hardware.
reg(15C8) is used to trig interrupt by tpd threshold.

Signed-off-by: xiong <xiong@qca.qualcomm.com>
Tested-by: Liu David <dwliu@qca.qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Huang, Xiong
2012-04-17 19:32:29 +00:00
committed by David S. Miller
parent 864ad85f77
commit 8d5c68362f
3 changed files with 6 additions and 57 deletions
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19
drivers/net/ethernet/atheros/atl1c/atl1c.h
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@@ -426,10 +426,6 @@ struct atl1c_hw {
#define ATL1C_FPGA_VERSION 0x8000
u16 link_cap_flags;
#define ATL1C_LINK_CAP_1000M 0x0001
u16 cmb_tpd;
u16 cmb_rrd;
u16 cmb_rx_timer; /* 2us resolution */
u16 cmb_tx_timer;
u32 smb_timer;
u16 rrd_thresh; /* Threshold of number of RRD produced to trigger
@@ -449,8 +445,7 @@ struct atl1c_hw {
/*
* atl1c_ring_header represents a single, contiguous block of DMA space
* mapped for the three descriptor rings (tpd, rfd, rrd) and the two
* message blocks (cmb, smb) described below
* mapped for the three descriptor rings (tpd, rfd, rrd) described below
*/
struct atl1c_ring_header {
void *desc; /* virtual address */
@@ -524,16 +519,6 @@ struct atl1c_rrd_ring {
u16 next_to_clean;
};
struct atl1c_cmb {
void *cmb;
dma_addr_t dma;
};
struct atl1c_smb {
void *smb;
dma_addr_t dma;
};
/* board specific private data structure */
struct atl1c_adapter {
struct net_device *netdev;
@@ -571,8 +556,6 @@ struct atl1c_adapter {
struct atl1c_tpd_ring tpd_ring[AT_MAX_TRANSMIT_QUEUE];
struct atl1c_rfd_ring rfd_ring;
struct atl1c_rrd_ring rrd_ring;
struct atl1c_cmb cmb;
struct atl1c_smb smb;
u32 bd_number; /* board number;*/
};