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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
View file

@ -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;*/
};

10
drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
View file

@ -447,8 +447,6 @@ int atl1c_phy_power_saving(struct atl1c_hw *hw);
*/
#define REG_RX_BASE_ADDR_HI 0x1540
#define REG_TX_BASE_ADDR_HI 0x1544
#define REG_SMB_BASE_ADDR_HI 0x1548
#define REG_SMB_BASE_ADDR_LO 0x154C
#define REG_RFD0_HEAD_ADDR_LO 0x1550
#define REG_RFD_RING_SIZE 0x1560
#define RFD_RING_SIZE_MASK 0x0FFF
@ -461,7 +459,6 @@ int atl1c_phy_power_saving(struct atl1c_hw *hw);
#define REG_NTPD_HEAD_ADDR_LO 0x1580
#define REG_TPD_RING_SIZE 0x1584
#define TPD_RING_SIZE_MASK 0xFFFF
#define REG_CMB_BASE_ADDR_LO 0x1588
/* TXQ Control Register */
#define REG_TXQ_CTRL 0x1590
@ -556,13 +553,10 @@ int atl1c_phy_power_saving(struct atl1c_hw *hw);
#define MAC_CTRL_SMB_DIS 0x1000000
#define DMA_CTRL_SMB_NOW 0x80000000
/* CMB/SMB Control Register */
/* INT-triggle/SMB Control Register */
#define REG_SMB_STAT_TIMER 0x15C4 /* 2us resolution */
#define SMB_STAT_TIMER_MASK 0xFFFFFF
#define REG_CMB_TPD_THRESH 0x15C8
#define CMB_TPD_THRESH_MASK 0xFFFF
#define REG_CMB_TX_TIMER 0x15CC /* 2us resolution */
#define CMB_TX_TIMER_MASK 0xFFFF
#define REG_TINT_TPD_THRESH 0x15C8 /* tpd th to trig intrrupt */
/* Mail box */
#define MB_RFDX_PROD_IDX_MASK 0xFFFF

34
drivers/net/ethernet/atheros/atl1c/atl1c_main.c
View file

@ -733,8 +733,6 @@ static int __devinit atl1c_sw_init(struct atl1c_adapter *adapter)
hw->ict = 50000; /* 100ms */
hw->smb_timer = 200000; /* 400ms */
hw->cmb_tpd = 4;
hw->cmb_tx_timer = 1; /* 2 us */
hw->rx_imt = 200;
hw->tx_imt = 1000;
@ -943,8 +941,7 @@ static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter)
sizeof(struct atl1c_tpd_desc) * tpd_ring->count * 2 +
sizeof(struct atl1c_rx_free_desc) * rx_desc_count +
sizeof(struct atl1c_recv_ret_status) * rx_desc_count +
sizeof(struct atl1c_hw_stats) +
8 * 4 + 8 * 2;
8 * 4;
ring_header->desc = pci_alloc_consistent(pdev, ring_header->size,
&ring_header->dma);
@ -977,8 +974,6 @@ static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter)
rrd_ring->count;
offset += roundup(rrd_ring->size, 8);
adapter->smb.dma = ring_header->dma + offset;
adapter->smb.smb = (u8 *)ring_header->desc + offset;
return 0;
err_nomem:
@ -993,8 +988,6 @@ static void atl1c_configure_des_ring(struct atl1c_adapter *adapter)
struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring;
struct atl1c_tpd_ring *tpd_ring = (struct atl1c_tpd_ring *)
adapter->tpd_ring;
struct atl1c_cmb *cmb = (struct atl1c_cmb *) &adapter->cmb;
struct atl1c_smb *smb = (struct atl1c_smb *) &adapter->smb;
u32 data;
/* TPD */
@ -1029,14 +1022,6 @@ static void atl1c_configure_des_ring(struct atl1c_adapter *adapter)
AT_WRITE_REG(hw, REG_RRD_RING_SIZE,
(rrd_ring->count & RRD_RING_SIZE_MASK));
/* CMB */
AT_WRITE_REG(hw, REG_CMB_BASE_ADDR_LO, cmb->dma & AT_DMA_LO_ADDR_MASK);
/* SMB */
AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_HI,
(u32)((smb->dma & AT_DMA_HI_ADDR_MASK) >> 32));
AT_WRITE_REG(hw, REG_SMB_BASE_ADDR_LO,
(u32)(smb->dma & AT_DMA_LO_ADDR_MASK));
if (hw->nic_type == athr_l2c_b) {
AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L);
AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L);
@ -1115,12 +1100,6 @@ static void atl1c_configure_dma(struct atl1c_adapter *adapter)
u32 dma_ctrl_data;
dma_ctrl_data = DMA_CTRL_DMAR_REQ_PRI;
if (hw->ctrl_flags & ATL1C_CMB_ENABLE)
dma_ctrl_data |= DMA_CTRL_CMB_EN;
if (hw->ctrl_flags & ATL1C_SMB_ENABLE)
dma_ctrl_data |= DMA_CTRL_SMB_EN;
else
dma_ctrl_data |= MAC_CTRL_SMB_DIS;
switch (hw->dma_order) {
case atl1c_dma_ord_in:
@ -1440,16 +1419,9 @@ static int atl1c_configure(struct atl1c_adapter *adapter)
master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN;
AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data);
if (hw->ctrl_flags & ATL1C_CMB_ENABLE) {
AT_WRITE_REG(hw, REG_CMB_TPD_THRESH,
hw->cmb_tpd & CMB_TPD_THRESH_MASK);
AT_WRITE_REG(hw, REG_CMB_TX_TIMER,
hw->cmb_tx_timer & CMB_TX_TIMER_MASK);
}
AT_WRITE_REG(hw, REG_SMB_STAT_TIMER,
hw->smb_timer & SMB_STAT_TIMER_MASK);
if (hw->ctrl_flags & ATL1C_SMB_ENABLE)
AT_WRITE_REG(hw, REG_SMB_STAT_TIMER,
hw->smb_timer & SMB_STAT_TIMER_MASK);
/* set MTU */
AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN +
VLAN_HLEN + ETH_FCS_LEN);