Commit 6ef92063 authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer Committed by David S. Miller

net: korina: Make driver COMPILE_TESTable

Move structs/defines for ethernet/dma register into driver, since they
are only used for this driver and remove any MIPS specific includes.
This makes it possible to COMPILE_TEST the driver.
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e4cd854e
......@@ -99,7 +99,7 @@ config JME
config KORINA
tristate "Korina (IDT RC32434) Ethernet support"
depends on MIKROTIK_RB532
depends on MIKROTIK_RB532 || COMPILE_TEST
select MII
help
If you have a Mikrotik RouterBoard 500 or IDT RC32434
......
......@@ -59,18 +59,244 @@
#include <linux/pgtable.h>
#include <linux/clk.h>
#include <asm/bootinfo.h>
#include <asm/bitops.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <asm/mach-rc32434/eth.h>
#include <asm/mach-rc32434/dma_v.h>
#define DRV_NAME "korina"
#define DRV_VERSION "0.20"
#define DRV_RELDATE "15Sep2017"
struct eth_regs {
u32 ethintfc;
u32 ethfifott;
u32 etharc;
u32 ethhash0;
u32 ethhash1;
u32 ethu0[4]; /* Reserved. */
u32 ethpfs;
u32 ethmcp;
u32 eth_u1[10]; /* Reserved. */
u32 ethspare;
u32 eth_u2[42]; /* Reserved. */
u32 ethsal0;
u32 ethsah0;
u32 ethsal1;
u32 ethsah1;
u32 ethsal2;
u32 ethsah2;
u32 ethsal3;
u32 ethsah3;
u32 ethrbc;
u32 ethrpc;
u32 ethrupc;
u32 ethrfc;
u32 ethtbc;
u32 ethgpf;
u32 eth_u9[50]; /* Reserved. */
u32 ethmac1;
u32 ethmac2;
u32 ethipgt;
u32 ethipgr;
u32 ethclrt;
u32 ethmaxf;
u32 eth_u10; /* Reserved. */
u32 ethmtest;
u32 miimcfg;
u32 miimcmd;
u32 miimaddr;
u32 miimwtd;
u32 miimrdd;
u32 miimind;
u32 eth_u11; /* Reserved. */
u32 eth_u12; /* Reserved. */
u32 ethcfsa0;
u32 ethcfsa1;
u32 ethcfsa2;
};
/* Ethernet interrupt registers */
#define ETH_INT_FC_EN BIT(0)
#define ETH_INT_FC_ITS BIT(1)
#define ETH_INT_FC_RIP BIT(2)
#define ETH_INT_FC_JAM BIT(3)
#define ETH_INT_FC_OVR BIT(4)
#define ETH_INT_FC_UND BIT(5)
#define ETH_INT_FC_IOC 0x000000c0
/* Ethernet FIFO registers */
#define ETH_FIFI_TT_TTH_BIT 0
#define ETH_FIFO_TT_TTH 0x0000007f
/* Ethernet ARC/multicast registers */
#define ETH_ARC_PRO BIT(0)
#define ETH_ARC_AM BIT(1)
#define ETH_ARC_AFM BIT(2)
#define ETH_ARC_AB BIT(3)
/* Ethernet SAL registers */
#define ETH_SAL_BYTE_5 0x000000ff
#define ETH_SAL_BYTE_4 0x0000ff00
#define ETH_SAL_BYTE_3 0x00ff0000
#define ETH_SAL_BYTE_2 0xff000000
/* Ethernet SAH registers */
#define ETH_SAH_BYTE1 0x000000ff
#define ETH_SAH_BYTE0 0x0000ff00
/* Ethernet GPF register */
#define ETH_GPF_PTV 0x0000ffff
/* Ethernet PFG register */
#define ETH_PFS_PFD BIT(0)
/* Ethernet CFSA[0-3] registers */
#define ETH_CFSA0_CFSA4 0x000000ff
#define ETH_CFSA0_CFSA5 0x0000ff00
#define ETH_CFSA1_CFSA2 0x000000ff
#define ETH_CFSA1_CFSA3 0x0000ff00
#define ETH_CFSA1_CFSA0 0x000000ff
#define ETH_CFSA1_CFSA1 0x0000ff00
/* Ethernet MAC1 registers */
#define ETH_MAC1_RE BIT(0)
#define ETH_MAC1_PAF BIT(1)
#define ETH_MAC1_RFC BIT(2)
#define ETH_MAC1_TFC BIT(3)
#define ETH_MAC1_LB BIT(4)
#define ETH_MAC1_MR BIT(31)
/* Ethernet MAC2 registers */
#define ETH_MAC2_FD BIT(0)
#define ETH_MAC2_FLC BIT(1)
#define ETH_MAC2_HFE BIT(2)
#define ETH_MAC2_DC BIT(3)
#define ETH_MAC2_CEN BIT(4)
#define ETH_MAC2_PE BIT(5)
#define ETH_MAC2_VPE BIT(6)
#define ETH_MAC2_APE BIT(7)
#define ETH_MAC2_PPE BIT(8)
#define ETH_MAC2_LPE BIT(9)
#define ETH_MAC2_NB BIT(12)
#define ETH_MAC2_BP BIT(13)
#define ETH_MAC2_ED BIT(14)
/* Ethernet IPGT register */
#define ETH_IPGT 0x0000007f
/* Ethernet IPGR registers */
#define ETH_IPGR_IPGR2 0x0000007f
#define ETH_IPGR_IPGR1 0x00007f00
/* Ethernet CLRT registers */
#define ETH_CLRT_MAX_RET 0x0000000f
#define ETH_CLRT_COL_WIN 0x00003f00
/* Ethernet MAXF register */
#define ETH_MAXF 0x0000ffff
/* Ethernet test registers */
#define ETH_TEST_REG BIT(2)
#define ETH_MCP_DIV 0x000000ff
/* MII registers */
#define ETH_MII_CFG_RSVD 0x0000000c
#define ETH_MII_CMD_RD BIT(0)
#define ETH_MII_CMD_SCN BIT(1)
#define ETH_MII_REG_ADDR 0x0000001f
#define ETH_MII_PHY_ADDR 0x00001f00
#define ETH_MII_WTD_DATA 0x0000ffff
#define ETH_MII_RDD_DATA 0x0000ffff
#define ETH_MII_IND_BSY BIT(0)
#define ETH_MII_IND_SCN BIT(1)
#define ETH_MII_IND_NV BIT(2)
/* Values for the DEVCS field of the Ethernet DMA Rx and Tx descriptors. */
#define ETH_RX_FD BIT(0)
#define ETH_RX_LD BIT(1)
#define ETH_RX_ROK BIT(2)
#define ETH_RX_FM BIT(3)
#define ETH_RX_MP BIT(4)
#define ETH_RX_BP BIT(5)
#define ETH_RX_VLT BIT(6)
#define ETH_RX_CF BIT(7)
#define ETH_RX_OVR BIT(8)
#define ETH_RX_CRC BIT(9)
#define ETH_RX_CV BIT(10)
#define ETH_RX_DB BIT(11)
#define ETH_RX_LE BIT(12)
#define ETH_RX_LOR BIT(13)
#define ETH_RX_CES BIT(14)
#define ETH_RX_LEN_BIT 16
#define ETH_RX_LEN 0xffff0000
#define ETH_TX_FD BIT(0)
#define ETH_TX_LD BIT(1)
#define ETH_TX_OEN BIT(2)
#define ETH_TX_PEN BIT(3)
#define ETH_TX_CEN BIT(4)
#define ETH_TX_HEN BIT(5)
#define ETH_TX_TOK BIT(6)
#define ETH_TX_MP BIT(7)
#define ETH_TX_BP BIT(8)
#define ETH_TX_UND BIT(9)
#define ETH_TX_OF BIT(10)
#define ETH_TX_ED BIT(11)
#define ETH_TX_EC BIT(12)
#define ETH_TX_LC BIT(13)
#define ETH_TX_TD BIT(14)
#define ETH_TX_CRC BIT(15)
#define ETH_TX_LE BIT(16)
#define ETH_TX_CC 0x001E0000
/* DMA descriptor (in physical memory). */
struct dma_desc {
u32 control; /* Control. use DMAD_* */
u32 ca; /* Current Address. */
u32 devcs; /* Device control and status. */
u32 link; /* Next descriptor in chain. */
};
#define DMA_DESC_COUNT_BIT 0
#define DMA_DESC_COUNT_MSK 0x0003ffff
#define DMA_DESC_DS_BIT 20
#define DMA_DESC_DS_MSK 0x00300000
#define DMA_DESC_DEV_CMD_BIT 22
#define DMA_DESC_DEV_CMD_MSK 0x01c00000
/* DMA descriptors interrupts */
#define DMA_DESC_COF BIT(25) /* Chain on finished */
#define DMA_DESC_COD BIT(26) /* Chain on done */
#define DMA_DESC_IOF BIT(27) /* Interrupt on finished */
#define DMA_DESC_IOD BIT(28) /* Interrupt on done */
#define DMA_DESC_TERM BIT(29) /* Terminated */
#define DMA_DESC_DONE BIT(30) /* Done */
#define DMA_DESC_FINI BIT(31) /* Finished */
/* DMA register (within Internal Register Map). */
struct dma_reg {
u32 dmac; /* Control. */
u32 dmas; /* Status. */
u32 dmasm; /* Mask. */
u32 dmadptr; /* Descriptor pointer. */
u32 dmandptr; /* Next descriptor pointer. */
};
/* DMA channels specific registers */
#define DMA_CHAN_RUN_BIT BIT(0)
#define DMA_CHAN_DONE_BIT BIT(1)
#define DMA_CHAN_MODE_BIT BIT(2)
#define DMA_CHAN_MODE_MSK 0x0000000c
#define DMA_CHAN_MODE_AUTO 0
#define DMA_CHAN_MODE_BURST 1
#define DMA_CHAN_MODE_XFRT 2
#define DMA_CHAN_MODE_RSVD 3
#define DMA_CHAN_ACT_BIT BIT(4)
/* DMA status registers */
#define DMA_STAT_FINI BIT(0)
#define DMA_STAT_DONE BIT(1)
#define DMA_STAT_CHAIN BIT(2)
#define DMA_STAT_ERR BIT(3)
#define DMA_STAT_HALT BIT(4)
#define STATION_ADDRESS_HIGH(dev) (((dev)->dev_addr[0] << 8) | \
((dev)->dev_addr[1]))
#define STATION_ADDRESS_LOW(dev) (((dev)->dev_addr[2] << 24) | \
......@@ -100,6 +326,7 @@ enum chain_status {
desc_empty
};
#define DMA_COUNT(count) ((count) & DMA_DESC_COUNT_MSK)
#define IS_DMA_FINISHED(X) (((X) & (DMA_DESC_FINI)) != 0)
#define IS_DMA_DONE(X) (((X) & (DMA_DESC_DONE)) != 0)
#define RCVPKT_LENGTH(X) (((X) & ETH_RX_LEN) >> ETH_RX_LEN_BIT)
......@@ -453,14 +680,14 @@ static int korina_rx(struct net_device *dev, int limit)
lp->rx_next_done = (lp->rx_next_done + 1) & KORINA_RDS_MASK;
rd = &lp->rd_ring[lp->rx_next_done];
writel(~DMA_STAT_DONE, &lp->rx_dma_regs->dmas);
writel((u32)~DMA_STAT_DONE, &lp->rx_dma_regs->dmas);
}
dmas = readl(&lp->rx_dma_regs->dmas);
if (dmas & DMA_STAT_HALT) {
writel(~(DMA_STAT_HALT | DMA_STAT_ERR),
&lp->rx_dma_regs->dmas);
writel((u32)~(DMA_STAT_HALT | DMA_STAT_ERR),
&lp->rx_dma_regs->dmas);
lp->dma_halt_cnt++;
rd->devcs = 0;
......
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