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bcm63xx_enet: add support for Broadcom BCM63xx integrated gigabit switch 

Newer Broadcom BCM63xx SoCs: 6328, 6362 and 6368 have an integrated switch
which needs to be driven slightly differently from the traditional
external switches. This patch introduces changes in arch/mips/bcm63xx in order
to:

- register a bcm63xx_enetsw driver instead of bcm63xx_enet driver
- update DMA channels configuration & state RAM base addresses
- add a new platform data configuration knob to define the number of
  ports per switch/device and force link on some ports
- define the required switch registers

On the driver side, the following changes are required:

- the switch ports need to be polled to ensure the link is up and
  running and RX/TX can properly work
- basic switch configuration needs to be performed for the switch to
  forward packets to the CPU
- update the MIB counters since the integrated

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maxime Bizon 2013-06-04 22:53:35 +01:00 committed by David S. Miller
parent 0ae99b5fed
commit 6f00a02296
7 changed files with 1177 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/mips/bcm63xx/boards/board_bcm963xx.c
View File

@ -845,6 +845,10 @@ int __init board_register_devices(void)
!bcm63xx_nvram_get_mac_address(board.enet1.mac_addr))
bcm63xx_enet_register(1, &board.enet1);
if (board.has_enetsw &&
!bcm63xx_nvram_get_mac_address(board.enetsw.mac_addr))
bcm63xx_enetsw_register(&board.enetsw);
if (board.has_usbd)
bcm63xx_usbd_register(&board.usbd);

109
arch/mips/bcm63xx/dev-enet.c
View File

@ -104,6 +104,64 @@ static struct platform_device bcm63xx_enet1_device = {
},
};
static struct resource enetsw_res[] = {
{
/* start & end filled at runtime */
.flags = IORESOURCE_MEM,
},
{
/* start filled at runtime */
.flags = IORESOURCE_IRQ,
},
{
/* start filled at runtime */
.flags = IORESOURCE_IRQ,
},
};
static struct bcm63xx_enetsw_platform_data enetsw_pd;
static struct platform_device bcm63xx_enetsw_device = {
.name = "bcm63xx_enetsw",
.num_resources = ARRAY_SIZE(enetsw_res),
.resource = enetsw_res,
.dev = {
.platform_data = &enetsw_pd,
},
};
static int __init register_shared(void)
{
int ret, chan_count;
if (shared_device_registered)
return 0;
shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
shared_res[0].end = shared_res[0].start;
shared_res[0].end += (RSET_ENETDMA_SIZE) - 1;
if (BCMCPU_IS_6328() || BCMCPU_IS_6362() || BCMCPU_IS_6368())
chan_count = 32;
else
chan_count = 16;
shared_res[1].start = bcm63xx_regset_address(RSET_ENETDMAC);
shared_res[1].end = shared_res[1].start;
shared_res[1].end += RSET_ENETDMAC_SIZE(chan_count) - 1;
shared_res[2].start = bcm63xx_regset_address(RSET_ENETDMAS);
shared_res[2].end = shared_res[2].start;
shared_res[2].end += RSET_ENETDMAS_SIZE(chan_count) - 1;
ret = platform_device_register(&bcm63xx_enet_shared_device);
if (ret)
return ret;
shared_device_registered = 1;
return 0;
}
int __init bcm63xx_enet_register(int unit,
const struct bcm63xx_enet_platform_data *pd)
{
@ -117,24 +175,9 @@ int __init bcm63xx_enet_register(int unit,
if (unit == 1 && BCMCPU_IS_6338())
return -ENODEV;
if (!shared_device_registered) {
shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
shared_res[0].end = shared_res[0].start;
shared_res[0].end += (RSET_ENETDMA_SIZE) - 1;
shared_res[1].start = bcm63xx_regset_address(RSET_ENETDMAC);
shared_res[1].end = shared_res[1].start;
shared_res[1].end += RSET_ENETDMAC_SIZE(16) - 1;
shared_res[2].start = bcm63xx_regset_address(RSET_ENETDMAS);
shared_res[2].end = shared_res[2].start;
shared_res[2].end += RSET_ENETDMAS_SIZE(16) - 1;
ret = platform_device_register(&bcm63xx_enet_shared_device);
ret = register_shared();
if (ret)
return ret;
shared_device_registered = 1;
}
if (unit == 0) {
enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0);
@ -175,3 +218,37 @@ int __init bcm63xx_enet_register(int unit,
return ret;
return 0;
}
int __init
bcm63xx_enetsw_register(const struct bcm63xx_enetsw_platform_data *pd)
{
int ret;
if (!BCMCPU_IS_6328() && !BCMCPU_IS_6362() && !BCMCPU_IS_6368())
return -ENODEV;
ret = register_shared();
if (ret)
return ret;
enetsw_res[0].start = bcm63xx_regset_address(RSET_ENETSW);
enetsw_res[0].end = enetsw_res[0].start;
enetsw_res[0].end += RSET_ENETSW_SIZE - 1;
enetsw_res[1].start = bcm63xx_get_irq_number(IRQ_ENETSW_RXDMA0);
enetsw_res[2].start = bcm63xx_get_irq_number(IRQ_ENETSW_TXDMA0);
if (!enetsw_res[2].start)
enetsw_res[2].start = -1;
memcpy(bcm63xx_enetsw_device.dev.platform_data, pd, sizeof(*pd));
if (BCMCPU_IS_6328())
enetsw_pd.num_ports = ENETSW_PORTS_6328;
else if (BCMCPU_IS_6362() || BCMCPU_IS_6368())
enetsw_pd.num_ports = ENETSW_PORTS_6368;
ret = platform_device_register(&bcm63xx_enetsw_device);
if (ret)
return ret;
return 0;
}

28
arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h
View File

@ -39,7 +39,35 @@ struct bcm63xx_enet_platform_data {
int phy_id, int reg, int val));
};
/*
* on board ethernet switch platform data
*/
#define ENETSW_MAX_PORT 8
#define ENETSW_PORTS_6328 5 /* 4 FE PHY + 1 RGMII */
#define ENETSW_PORTS_6368 6 /* 4 FE PHY + 2 RGMII */
#define ENETSW_RGMII_PORT0 4
struct bcm63xx_enetsw_port {
int used;
int phy_id;
int bypass_link;
int force_speed;
int force_duplex_full;
const char *name;
};
struct bcm63xx_enetsw_platform_data {
char mac_addr[ETH_ALEN];
int num_ports;
struct bcm63xx_enetsw_port used_ports[ENETSW_MAX_PORT];
};
int __init bcm63xx_enet_register(int unit,
const struct bcm63xx_enet_platform_data *pd);
int bcm63xx_enetsw_register(const struct bcm63xx_enetsw_platform_data *pd);
#endif /* ! BCM63XX_DEV_ENET_H_ */

50
arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
View File

@ -830,10 +830,60 @@
* _REG relative to RSET_ENETSW
*************************************************************************/
/* Port traffic control */
#define ENETSW_PTCTRL_REG(x) (0x0 + (x))
#define ENETSW_PTCTRL_RXDIS_MASK (1 << 0)
#define ENETSW_PTCTRL_TXDIS_MASK (1 << 1)
/* Switch mode register */
#define ENETSW_SWMODE_REG (0xb)
#define ENETSW_SWMODE_FWD_EN_MASK (1 << 1)
/* IMP override Register */
#define ENETSW_IMPOV_REG (0xe)
#define ENETSW_IMPOV_FORCE_MASK (1 << 7)
#define ENETSW_IMPOV_TXFLOW_MASK (1 << 5)
#define ENETSW_IMPOV_RXFLOW_MASK (1 << 4)
#define ENETSW_IMPOV_1000_MASK (1 << 3)
#define ENETSW_IMPOV_100_MASK (1 << 2)
#define ENETSW_IMPOV_FDX_MASK (1 << 1)
#define ENETSW_IMPOV_LINKUP_MASK (1 << 0)
/* Port override Register */
#define ENETSW_PORTOV_REG(x) (0x58 + (x))
#define ENETSW_PORTOV_ENABLE_MASK (1 << 6)
#define ENETSW_PORTOV_TXFLOW_MASK (1 << 5)
#define ENETSW_PORTOV_RXFLOW_MASK (1 << 4)
#define ENETSW_PORTOV_1000_MASK (1 << 3)
#define ENETSW_PORTOV_100_MASK (1 << 2)
#define ENETSW_PORTOV_FDX_MASK (1 << 1)
#define ENETSW_PORTOV_LINKUP_MASK (1 << 0)
/* MDIO control register */
#define ENETSW_MDIOC_REG (0xb0)
#define ENETSW_MDIOC_EXT_MASK (1 << 16)
#define ENETSW_MDIOC_REG_SHIFT 20
#define ENETSW_MDIOC_PHYID_SHIFT 25
#define ENETSW_MDIOC_RD_MASK (1 << 30)
#define ENETSW_MDIOC_WR_MASK (1 << 31)
/* MDIO data register */
#define ENETSW_MDIOD_REG (0xb4)
/* Global Management Configuration Register */
#define ENETSW_GMCR_REG (0x200)
#define ENETSW_GMCR_RST_MIB_MASK (1 << 0)
/* MIB register */
#define ENETSW_MIB_REG(x) (0x2800 + (x) * 4)
#define ENETSW_MIB_REG_COUNT 47
/* Jumbo control register port mask register */
#define ENETSW_JMBCTL_PORT_REG (0x4004)
/* Jumbo control mib good frame register */
#define ENETSW_JMBCTL_MAXSIZE_REG (0x4008)
/*************************************************************************
* _REG relative to RSET_OHCI_PRIV

2
arch/mips/include/asm/mach-bcm63xx/board_bcm963xx.h
View File

@ -24,6 +24,7 @@ struct board_info {
/* enabled feature/device */
unsigned int has_enet0:1;
unsigned int has_enet1:1;
unsigned int has_enetsw:1;
unsigned int has_pci:1;
unsigned int has_pccard:1;
unsigned int has_ohci0:1;
@ -36,6 +37,7 @@ struct board_info {
/* ethernet config */
struct bcm63xx_enet_platform_data enet0;
struct bcm63xx_enet_platform_data enet1;
struct bcm63xx_enetsw_platform_data enetsw;
/* USB config */
struct bcm63xx_usbd_platform_data usbd;

939
drivers/net/ethernet/broadcom/bcm63xx_enet.c
View File

File diff suppressed because it is too large Load Diff

71
drivers/net/ethernet/broadcom/bcm63xx_enet.h
View File

@ -18,6 +18,7 @@
/* maximum burst len for dma (4 bytes unit) */
#define BCMENET_DMA_MAXBURST 16
#define BCMENETSW_DMA_MAXBURST 8
/* tx transmit threshold (4 bytes unit), fifo is 256 bytes, the value
* must be low enough so that a DMA transfer of above burst length can
@ -84,11 +85,60 @@
#define ETH_MIB_RX_CNTRL 54
/*
* SW MIB Counters register definitions
*/
#define ETHSW_MIB_TX_ALL_OCT 0
#define ETHSW_MIB_TX_DROP_PKTS 2
#define ETHSW_MIB_TX_QOS_PKTS 3
#define ETHSW_MIB_TX_BRDCAST 4
#define ETHSW_MIB_TX_MULT 5
#define ETHSW_MIB_TX_UNI 6
#define ETHSW_MIB_TX_COL 7
#define ETHSW_MIB_TX_1_COL 8
#define ETHSW_MIB_TX_M_COL 9
#define ETHSW_MIB_TX_DEF 10
#define ETHSW_MIB_TX_LATE 11
#define ETHSW_MIB_TX_EX_COL 12
#define ETHSW_MIB_TX_PAUSE 14
#define ETHSW_MIB_TX_QOS_OCT 15
#define ETHSW_MIB_RX_ALL_OCT 17
#define ETHSW_MIB_RX_UND 19
#define ETHSW_MIB_RX_PAUSE 20
#define ETHSW_MIB_RX_64 21
#define ETHSW_MIB_RX_65_127 22
#define ETHSW_MIB_RX_128_255 23
#define ETHSW_MIB_RX_256_511 24
#define ETHSW_MIB_RX_512_1023 25
#define ETHSW_MIB_RX_1024_1522 26
#define ETHSW_MIB_RX_OVR 27
#define ETHSW_MIB_RX_JAB 28
#define ETHSW_MIB_RX_ALIGN 29
#define ETHSW_MIB_RX_CRC 30
#define ETHSW_MIB_RX_GD_OCT 31
#define ETHSW_MIB_RX_DROP 33
#define ETHSW_MIB_RX_UNI 34
#define ETHSW_MIB_RX_MULT 35
#define ETHSW_MIB_RX_BRDCAST 36
#define ETHSW_MIB_RX_SA_CHANGE 37
#define ETHSW_MIB_RX_FRAG 38
#define ETHSW_MIB_RX_OVR_DISC 39
#define ETHSW_MIB_RX_SYM 40
#define ETHSW_MIB_RX_QOS_PKTS 41
#define ETHSW_MIB_RX_QOS_OCT 42
#define ETHSW_MIB_RX_1523_2047 44
#define ETHSW_MIB_RX_2048_4095 45
#define ETHSW_MIB_RX_4096_8191 46
#define ETHSW_MIB_RX_8192_9728 47
struct bcm_enet_mib_counters {
u64 tx_gd_octets;
u32 tx_gd_pkts;
u32 tx_all_octets;
u32 tx_all_pkts;
u32 tx_unicast;
u32 tx_brdcast;
u32 tx_mult;
u32 tx_64;
@ -97,7 +147,12 @@ struct bcm_enet_mib_counters {
u32 tx_256_511;
u32 tx_512_1023;
u32 tx_1024_max;
u32 tx_1523_2047;
u32 tx_2048_4095;
u32 tx_4096_8191;
u32 tx_8192_9728;
u32 tx_jab;
u32 tx_drop;
u32 tx_ovr;
u32 tx_frag;
u32 tx_underrun;
@ -114,6 +169,7 @@ struct bcm_enet_mib_counters {
u32 rx_all_octets;
u32 rx_all_pkts;
u32 rx_brdcast;
u32 rx_unicast;
u32 rx_mult;
u32 rx_64;
u32 rx_65_127;
@ -197,6 +253,9 @@ struct bcm_enet_priv {
/* number of dma desc in tx ring */
int tx_ring_size;
/* maximum dma burst size */
int dma_maxburst;
/* cpu view of rx dma ring */
struct bcm_enet_desc *tx_desc_cpu;
@ -269,6 +328,18 @@ struct bcm_enet_priv {
/* maximum hardware transmit/receive size */
unsigned int hw_mtu;
bool enet_is_sw;
/* port mapping for switch devices */
int num_ports;
struct bcm63xx_enetsw_port used_ports[ENETSW_MAX_PORT];
int sw_port_link[ENETSW_MAX_PORT];
/* used to poll switch port state */
struct timer_list swphy_poll;
spinlock_t enetsw_mdio_lock;
};
#endif /* ! BCM63XX_ENET_H_ */