[U-Boot] [PATCH 1/1] ppc4xx: Add support for GPCS, SGMII and M88E1112 PHY
This patch adds GPCS, SGMII and M88E1112 PHY support for the AMCC PPC460GT/EX processors.
Signed-off-by: Victor Gallardo vgallardo@amcc.com --- cpu/ppc4xx/4xx_enet.c | 122 ++++++++++++++++++++++++++++++++++++++++++++++++- cpu/ppc4xx/miiphy.c | 41 +++++++++++++++- include/ppc4xx_enet.h | 3 + 3 files changed, 161 insertions(+), 5 deletions(-)
diff --git a/cpu/ppc4xx/4xx_enet.c b/cpu/ppc4xx/4xx_enet.c index 8a38335..f6cbf2b 100644 --- a/cpu/ppc4xx/4xx_enet.c +++ b/cpu/ppc4xx/4xx_enet.c @@ -198,6 +198,7 @@ #define BI_PHYMODE_RMII 8 #endif #endif +#define BI_PHYMODE_SGMII 9
#if defined(CONFIG_440SP) || defined(CONFIG_440SPE) || \ defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \ @@ -216,6 +217,20 @@ #define MAL_RX_CHAN_MUL 1 #endif
+/* + * Some boards do not have a PHY for each ethernet port. + * For example on Arches board (2 CPU system) eth0 does not have + * a PHY, both CPU's are wired directly together (AC coupled) + * using SGMII0. In these cases set the appropriate + * CONFIG_PHY_ADDR equal to CONFIG_PHY_LESS to detect that + * the specified ethernet port does not have a PHY. + */ +#if !defined(CONFIG_PHY_LESS) +#define CONFIG_PHY_LESS 0xFFFFFFFF /* PHY-less mode */ +#define CONFIG_PHY_LESS_SPEED 1000 +#define CONFIG_PHY_LESS_DUPLEX FULL +#endif + /*-----------------------------------------------------------------------------+ * Global variables. TX and RX descriptors and buffers. *-----------------------------------------------------------------------------*/ @@ -611,8 +626,17 @@ int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis)
#if defined(CONFIG_460EX) mode = 9; + mfsdr(SDR0_ETH_CFG, eth_cfg); + if (((eth_cfg & SDR0_ETH_CFG_SGMII0_ENABLE) > 0) && + ((eth_cfg & SDR0_ETH_CFG_SGMII1_ENABLE) > 0)) + mode = 11; /* config SGMII */ #else mode = 10; + mfsdr(SDR0_ETH_CFG, eth_cfg); + if (((eth_cfg & SDR0_ETH_CFG_SGMII0_ENABLE) > 0) && + ((eth_cfg & SDR0_ETH_CFG_SGMII1_ENABLE) > 0) && + ((eth_cfg & SDR0_ETH_CFG_SGMII2_ENABLE) > 0)) + mode = 12; /* config SGMII */ #endif
/* TODO: @@ -635,6 +659,8 @@ int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis) /* * Right now only 2*RGMII is supported. Please extend when needed. * sr - 2008-02-19 + * Add SGMII support. + * vg - 2008-07-28 */ switch (mode) { case 1: @@ -761,6 +787,20 @@ int ppc_4xx_eth_setup_bridge(int devnum, bd_t * bis) bis->bi_phymode[2] = BI_PHYMODE_RGMII; bis->bi_phymode[3] = BI_PHYMODE_RGMII; break; + case 11: + /* 2 SGMII - 460EX */ + bis->bi_phymode[0] = BI_PHYMODE_SGMII; + bis->bi_phymode[1] = BI_PHYMODE_SGMII; + bis->bi_phymode[2] = BI_PHYMODE_NONE; + bis->bi_phymode[3] = BI_PHYMODE_NONE; + break; + case 12: + /* 3 SGMII - 460GT */ + bis->bi_phymode[0] = BI_PHYMODE_SGMII; + bis->bi_phymode[1] = BI_PHYMODE_SGMII; + bis->bi_phymode[2] = BI_PHYMODE_SGMII; + bis->bi_phymode[3] = BI_PHYMODE_NONE; + break; default: break; } @@ -945,6 +985,48 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis) out_be32((void *)EMAC_M1 + hw_p->hw_addr, mode_reg); #endif /* defined(CONFIG_440GX) || defined(CONFIG_440SP) */
+#if defined(CONFIG_GPCS_PHY_ADDR) || defined(CONFIG_GPCS_PHY1_ADDR) || \ + defined(CONFIG_GPCS_PHY2_ADDR) || defined(CONFIG_GPCS_PHY3_ADDR) + if (bis->bi_phymode[devnum] == BI_PHYMODE_SGMII) { + /* + * In SGMII mode, GPCS access is needed for + * communication with the internal SGMII SerDes. + */ + switch (devnum) { +#if defined(CONFIG_GPCS_PHY_ADDR) + case 0: + reg = CONFIG_GPCS_PHY_ADDR; + break; +#endif +#if defined(CONFIG_GPCS_PHY1_ADDR) + case 1: + reg = CONFIG_GPCS_PHY1_ADDR; + break; +#endif +#if defined(CONFIG_GPCS_PHY2_ADDR) + case 2: + reg = CONFIG_GPCS_PHY2_ADDR; + break; +#endif +#if defined(CONFIG_GPCS_PHY3_ADDR) + case 3: + reg = CONFIG_GPCS_PHY3_ADDR; + break; +#endif + } + + mode_reg = in_be32((void *)EMAC_M1 + hw_p->hw_addr); + mode_reg |= EMAC_M1_MF_1000GPCS | EMAC_M1_IPPA_SET(reg); + out_be32((void *)EMAC_M1 + hw_p->hw_addr, mode_reg); + + /* Configure GPCS interface to recommended setting for SGMII */ + miiphy_reset(dev->name, reg); + miiphy_write(dev->name, reg, 0x04, 0x8120); /* AsymPause, FDX */ + miiphy_write(dev->name, reg, 0x07, 0x2801); /* msg_pg, toggle */ + miiphy_write(dev->name, reg, 0x00, 0x0140); /* 1Gbps, FDX */ + } +#endif /* defined(CONFIG_GPCS_PHY_ADDR) */ + /* wait for PHY to complete auto negotiation */ reg_short = 0; #ifndef CONFIG_CS8952_PHY @@ -974,6 +1056,9 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis)
bis->bi_phynum[devnum] = reg;
+ if (reg == CONFIG_PHY_LESS) + goto get_speed; + #if defined(CONFIG_PHY_RESET) /* * Reset the phy, only if its the first time through @@ -986,6 +1071,33 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis) miiphy_write (dev->name, reg, 0x09, 0x0e00); miiphy_write (dev->name, reg, 0x04, 0x01e1); #endif +#if defined(CONFIG_M88E1112_PHY) + if (bis->bi_phymode[devnum] == BI_PHYMODE_SGMII) { + /* + * Marvell 88E1112 PHY needs to have the SGMII MAC + * interace (page 2) properly configured to + * communicate with the 460EX/GT GPCS interface. + */ + + /* Set access to Page 2 */ + miiphy_write(dev->name, reg, 0x16, 0x0002); + + miiphy_write(dev->name, reg, 0x00, 0x0040); /* 1Gbps */ + miiphy_read(dev->name, reg, 0x10, ®_short); + reg_short &= ~0x0C00; /* Preferred Media MASK */ + reg_short |= 0x0800; /* Preferred Media Copper */ + reg_short &= ~0x0380; /* Mode Select MASK */ + reg_short |= 0x0280; /* Mode Select Copper only */ + miiphy_write(dev->name, reg, 0x10, reg_short); + miiphy_read(dev->name, reg, 0x1a, ®_short); + reg_short |= 0x8000; /* bypass Auto-Negotiation */ + miiphy_write(dev->name, reg, 0x1a, reg_short); + miiphy_reset(dev->name, reg); /* reset MAC interface */ + + /* Reset access to Page 0 */ + miiphy_write(dev->name, reg, 0x16, 0x0000); + } +#endif /* defined(CONFIG_M88E1112_PHY) */ miiphy_reset (dev->name, reg);
#if defined(CONFIG_440GX) || \ @@ -1080,8 +1192,14 @@ static int ppc_4xx_eth_init (struct eth_device *dev, bd_t * bis) } #endif /* #ifndef CONFIG_CS8952_PHY */
- speed = miiphy_speed (dev->name, reg); - duplex = miiphy_duplex (dev->name, reg); +get_speed: + if (reg == CONFIG_PHY_LESS) { + speed = CONFIG_PHY_LESS_SPEED; + duplex = CONFIG_PHY_LESS_DUPLEX; + } else { + speed = miiphy_speed(dev->name, reg); + duplex = miiphy_duplex(dev->name, reg); + }
if (hw_p->print_speed) { hw_p->print_speed = 0; diff --git a/cpu/ppc4xx/miiphy.c b/cpu/ppc4xx/miiphy.c index c882720..d303598 100644 --- a/cpu/ppc4xx/miiphy.c +++ b/cpu/ppc4xx/miiphy.c @@ -180,8 +180,10 @@ int phy_setup_aneg (char *devname, unsigned char addr) * * sr: Currently on 460EX only EMAC0 works with MDIO, so we always * return EMAC0 offset here + * vg: For 460EX/460GT if internal GPCS PHY address is specified + * return appropriate EMAC offset */ -unsigned int miiphy_getemac_offset (void) +unsigned int miiphy_getemac_offset(u8 addr) { #if (defined(CONFIG_440) && \ !defined(CONFIG_440SP) && !defined(CONFIG_440SPE) && \ @@ -233,6 +235,39 @@ unsigned int miiphy_getemac_offset (void) return 0x100; #endif
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT) + u32 mode_reg; + u32 eoffset = 0; + + switch (addr) { +#if defined(CONFIG_HAS_ETH1) && defined(CONFIG_GPCS_PHY1_ADDR) + case CONFIG_GPCS_PHY1_ADDR: + mode_reg = in_be32((void *)EMAC_M1 + 0x100); + if (addr == EMAC_M1_IPPA_GET(mode_reg)) + eoffset = 0x100; + break; +#endif +#if defined(CONFIG_HAS_ETH2) && defined(CONFIG_GPCS_PHY2_ADDR) + case CONFIG_GPCS_PHY2_ADDR: + mode_reg = in_be32((void *)EMAC_M1 + 0x300); + if (addr == EMAC_M1_IPPA_GET(mode_reg)) + eoffset = 0x300; + break; +#endif +#if defined(CONFIG_HAS_ETH3) && defined(CONFIG_GPCS_PHY3_ADDR) + case CONFIG_GPCS_PHY3_ADDR: + mode_reg = in_be32((void *)EMAC_M1 + 0x400); + if (addr == EMAC_M1_IPPA_GET(mode_reg)) + eoffset = 0x400; + break; +#endif + default: + eoffset = 0; + break; + } + return eoffset; +#endif + return 0; #endif } @@ -262,7 +297,7 @@ static int emac_miiphy_command(u8 addr, u8 reg, int cmd, u16 value) u32 emac_reg; u32 sta_reg;
- emac_reg = miiphy_getemac_offset(); + emac_reg = miiphy_getemac_offset(addr);
/* wait for completion */ if (emac_miiphy_wait(emac_reg) != 0) @@ -311,7 +346,7 @@ int emac4xx_miiphy_read (char *devname, unsigned char addr, unsigned char reg, unsigned long sta_reg; unsigned long emac_reg;
- emac_reg = miiphy_getemac_offset (); + emac_reg = miiphy_getemac_offset(addr);
if (emac_miiphy_command(addr, reg, EMAC_STACR_READ, 0) != 0) return -1; diff --git a/include/ppc4xx_enet.h b/include/ppc4xx_enet.h index b74c6fc..00669a7 100644 --- a/include/ppc4xx_enet.h +++ b/include/ppc4xx_enet.h @@ -376,6 +376,7 @@ typedef struct emac_4xx_hw_st { #define EMAC_M1_APP (0x08000000) #define EMAC_M1_RSVD (0x06000000) #define EMAC_M1_IST (0x01000000) +#define EMAC_M1_MF_1000GPCS (0x00C00000) #define EMAC_M1_MF_1000MBPS (0x00800000) /* 0's for 10MBPS */ #define EMAC_M1_MF_100MBPS (0x00400000) #define EMAC_M1_RFS_MASK (0x00380000) @@ -394,6 +395,8 @@ typedef struct emac_4xx_hw_st { #define EMAC_M1_MWSW (0x00007000) #define EMAC_M1_JUMBO_ENABLE (0x00000800) #define EMAC_M1_IPPA (0x000007c0) +#define EMAC_M1_IPPA_SET(id) (((id) & 0x1f) << 6) +#define EMAC_M1_IPPA_GET(id) (((id) >> 6) & 0x1f) #define EMAC_M1_OBCI_GT100 (0x00000020) #define EMAC_M1_OBCI_100 (0x00000018) #define EMAC_M1_OBCI_83 (0x00000010)
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Victor Gallardo