net: ll_temac: Add LL TEMAC driver to u-boot

Xilinx LocalLink Tri-Mode Ether MAC driver can be
used by Xilinx Microblaze or Xilinx ppc405/440 in
SDMA and FIFO mode. DCR or XPS bus can be used.

The driver uses and requires MII and PHYLIB.

CP: 4 warnings: 'Use of volatile is usually wrong'
I won't fix this, because it depends on the network
driver subsystem.

Reported-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Stephan Linz <linz@li-pro.net>

1 files changed, 310 insertions, 0 deletions

diff --git a/drivers/net/xilinx_ll_temac.h b/drivers/net/xilinx_ll_temac.h
new file mode 100644
index 0000000000..ece3b602cb
--- /dev/null
+++ b/drivers/net/xilinx_ll_temac.h
@@ -0,0 +1,310 @@
+/*
+ * Xilinx xps_ll_temac ethernet driver for u-boot
+ *
+ * LL_TEMAC interface
+ *
+ * Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
+ * Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2008 - 2011 PetaLogix
+ *
+ * Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
+ * Copyright (C) 2008 Nissin Systems Co.,Ltd.
+ * March 2008 created
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * [0]: http://www.xilinx.com/support/documentation
+ *
+ * [S]:	[0]/ip_documentation/xps_ll_temac.pdf
+ * [A]:	[0]/application_notes/xapp1041.pdf
+ */
+#ifndef _XILINX_LL_TEMAC_
+#define _XILINX_LL_TEMAC_
+
+#include <config.h>
+#include <net.h>
+#include <phy.h>
+#include <miiphy.h>
+
+#include <asm/types.h>
+#include <asm/byteorder.h>
+
+#include "xilinx_ll_temac_sdma.h"
+
+#if !defined(__BIG_ENDIAN)
+# error LL_TEMAC requires big endianess
+#endif
+
+/*
+ * TEMAC Memory and Register Definition
+ *
+ * [1]:	[0]/ip_documentation/xps_ll_temac.pdf
+ *	page 19, Memory and Register Descriptions
+ */
+struct temac_reg {
+	/* direct soft registers (low part) */
+	u32 raf;	/* Reset and Address Filter */
+	u32 tpf;	/* Transmit Pause Frame */
+	u32 ifgp;	/* Transmit Inter Frame Gap Adjustment */
+	u32 is;		/* Interrupt Status */
+	u32 ip;		/* Interrupt Pending */
+	u32 ie;		/* Interrupt Enable */
+	u32 ttag;	/* Transmit VLAN Tag */
+	u32 rtag;	/* Receive VLAN Tag */
+	/* hard TEMAC registers */
+	u32 msw;	/* Most Significant Word Data */
+	u32 lsw;	/* Least Significant Word Data */
+	u32 ctl;	/* Control */
+	u32 rdy;	/* Ready Status */
+	/* direct soft registers (high part) */
+	u32 uawl;	/* Unicast Address Word Lower */
+	u32 uawu;	/* Unicast Address Word Upper */
+	u32 tpid0;	/* VLAN TPID Word 0 */
+	u32 tpid1;	/* VLAN TPID Word 1 */
+};
+
+/* Reset and Address Filter Registers (raf), [1] p25 */
+#define RAF_SR			(1 << 13)
+#define RAF_EMFE		(1 << 12)
+#define RAF_NFE			(1 << 11)
+#define RAF_RVSTM_POS		9
+#define RAF_RVSTM_MASK		(3 << RAF_RVSTM_POS)
+#define RAF_TVSTM_POS		7
+#define RAF_TVSTM_MASK		(3 << RAF_TVSTM_POS)
+#define RAF_RVTM_POS		5
+#define RAF_RVTM_MASK		(3 << RAF_RVTM_POS)
+#define RAF_TVTM_POS		3
+#define RAF_TVTM_MASK		(3 << RAF_TVTM_POS)
+#define RAF_BCREJ		(1 << 2)
+#define RAF_MCREJ		(1 << 1)
+#define RAF_HTRST		(1 << 0)
+
+/* Transmit Pause Frame Registers (tpf), [1] p28 */
+#define TPF_TPFV_POS		0
+#define TPF_TPFV_MASK		(0xFFFF << TPF_TPFV_POS)
+
+/* Transmit Inter Frame Gap Adjustment Registers (ifgp), [1] p28 */
+#define IFGP_POS		0
+#define IFGP_MASK		(0xFF << IFGP_POS)
+
+/* Interrupt Status, Pending, Enable Registers (is, ip, ie), [1] p29-33 */
+#define ISPE_MR			(1 << 7)
+#define ISPE_RDL		(1 << 6)
+#define ISPE_TC			(1 << 5)
+#define ISPE_RFO		(1 << 4)
+#define ISPE_RR			(1 << 3)
+#define ISPE_RC			(1 << 2)
+#define ISPE_AN			(1 << 1)
+#define ISPE_HAC		(1 << 0)
+
+/* Transmit, Receive VLAN Tag Registers (ttag, rtag), [1] p34-35 */
+#define TRTAG_TPID_POS		16
+#define TRTAG_TPID_MASK		(0xFFFF << TRTAG_TPID_POS)
+#define TRTAG_PRIO_POS		13
+#define TRTAG_PRIO_MASK		(7 << TRTAG_PRIO_POS)
+#define TRTAG_CFI		(1 << 12)
+#define TRTAG_VID_POS		0
+#define TRTAG_VID_MASK		(0xFFF << TRTAG_VID_POS)
+
+/* Most, Least Significant Word Data Register (msw, lsw), [1] p46 */
+#define MLSW_POS		0
+#define MLSW_MASK		(~0UL << MLSW_POS)
+
+/* LSW Data Register for PHY addresses (lsw), [1] p66 */
+#define LSW_REGAD_POS		0
+#define LSW_REGAD_MASK		(0x1F << LSW_REGAD_POS)
+#define LSW_PHYAD_POS		5
+#define LSW_PHYAD_MASK		(0x1F << LSW_PHYAD_POS)
+
+/* LSW Data Register for PHY data (lsw), [1] p66 */
+#define LSW_REGDAT_POS		0
+#define LSW_REGDAT_MASK		(0xFFFF << LSW_REGDAT_POS)
+
+/* Control Register (ctl), [1] p47 */
+#define CTL_WEN			(1 << 15)
+#define CTL_ADDR_POS		0
+#define CTL_ADDR_MASK		(0x3FF << CTL_ADDR_POS)
+
+/* Ready Status Register Ethernet (rdy), [1] p48 */
+#define RSE_HACS_RDY		(1 << 14)
+#define RSE_CFG_WR		(1 << 6)
+#define RSE_CFG_RR		(1 << 5)
+#define RSE_AF_WR		(1 << 4)
+#define RSE_AF_RR		(1 << 3)
+#define RSE_MIIM_WR		(1 << 2)
+#define RSE_MIIM_RR		(1 << 1)
+#define RSE_FABR_RR		(1 << 0)
+
+/* Unicast Address Word Lower, Upper Registers (uawl, uawu), [1] p35-36 */
+#define UAWL_UADDR_POS		0
+#define UAWL_UADDR_MASK		(~0UL << UAWL_UADDR_POS)
+#define UAWU_UADDR_POS		0
+#define UAWU_UADDR_MASK		(0xFFFF << UAWU_UADDR_POS)
+
+/* VLAN TPID Word 0, 1 Registers (tpid0, tpid1), [1] p37 */
+#define TPID0_V0_POS		0
+#define TPID0_V0_MASK		(0xFFFF << TPID0_V0_POS)
+#define TPID0_V1_POS		16
+#define TPID0_V1_MASK		(0xFFFF << TPID0_V1_POS)
+#define TPID1_V2_POS		0
+#define TPID1_V2_MASK		(0xFFFF << TPID1_V2_POS)
+#define TPID1_V3_POS		16
+#define TPID1_V3_MASK		(0xFFFF << TPID1_V3_POS)
+
+/*
+ * TEMAC Indirectly Addressable Register Index Enumeration
+ *
+ * [0]: http://www.xilinx.com/support/documentation
+ *
+ * [1]:	[0]/ip_documentation/xps_ll_temac.pdf
+ *	page 23, PLB Indirectly Addressable TEMAC Registers
+ */
+enum temac_ctrl {
+	TEMAC_RCW0	= 0x200,
+	TEMAC_RCW1	= 0x240,
+	TEMAC_TC	= 0x280,
+	TEMAC_FCC	= 0x2C0,
+	TEMAC_EMMC	= 0x300,
+	TEMAC_PHYC	= 0x320,
+	TEMAC_MC	= 0x340,
+	TEMAC_UAW0	= 0x380,
+	TEMAC_UAW1	= 0x384,
+	TEMAC_MAW0	= 0x388,
+	TEMAC_MAW1	= 0x38C,
+	TEMAC_AFM	= 0x390,
+	TEMAC_TIS	= 0x3A0,
+	TEMAC_TIE	= 0x3A4,
+	TEMAC_MIIMWD	= 0x3B0,
+	TEMAC_MIIMAI	= 0x3B4
+};
+
+/* Receive Configuration Word 0, 1 Registers (RCW0, RCW1), [1] p50-51 */
+#define RCW0_PADDR_POS		0
+#define RCW0_PADDR_MASK		(~0UL << RCW_PADDR_POS)
+#define RCW1_RST		(1 << 31)
+#define RCW1_JUM		(1 << 30)
+#define RCW1_FCS		(1 << 29)
+#define RCW1_RX			(1 << 28)
+#define RCW1_VLAN		(1 << 27)
+#define RCW1_HD			(1 << 26)
+#define RCW1_LT_DIS		(1 << 25)
+#define RCW1_PADDR_POS		0
+#define RCW1_PADDR_MASK		(0xFFFF << RCW_PADDR_POS)
+
+/* Transmit Configuration Registers (TC), [1] p52 */
+#define TC_RST			(1 << 31)
+#define TC_JUM			(1 << 30)
+#define TC_FCS			(1 << 29)
+#define TC_TX			(1 << 28)
+#define TC_VLAN			(1 << 27)
+#define TC_HD			(1 << 26)
+#define TC_IFG			(1 << 25)
+
+/* Flow Control Configuration Registers (FCC), [1] p54 */
+#define FCC_FCTX		(1 << 30)
+#define FCC_FCRX		(1 << 29)
+
+/* Ethernet MAC Mode Configuration Registers (EMMC), [1] p54 */
+#define EMMC_LSPD_POS		30
+#define EMMC_LSPD_MASK		(3 << EMMC_LSPD_POS)
+#define EMMC_LSPD_1000		(2 << EMMC_LSPD_POS)
+#define EMMC_LSPD_100		(1 << EMMC_LSPD_POS)
+#define EMMC_LSPD_10		0
+#define EMMC_RGMII		(1 << 29)
+#define EMMC_SGMII		(1 << 28)
+#define EMMC_GPCS		(1 << 27)
+#define EMMC_HOST		(1 << 26)
+#define EMMC_TX16		(1 << 25)
+#define EMMC_RX16		(1 << 24)
+
+/* RGMII/SGMII Configuration Registers (PHYC), [1] p56 */
+#define PHYC_SLSPD_POS		30
+#define PHYC_SLSPD_MASK		(3 << EMMC_SLSPD_POS)
+#define PHYC_SLSPD_1000		(2 << EMMC_SLSPD_POS)
+#define PHYC_SLSPD_100		(1 << EMMC_SLSPD_POS)
+#define PHYC_SLSPD_10		0
+#define PHYC_RLSPD_POS		2
+#define PHYC_RLSPD_MASK		(3 << EMMC_RLSPD_POS)
+#define PHYC_RLSPD_1000		(2 << EMMC_RLSPD_POS)
+#define PHYC_RLSPD_100		(1 << EMMC_RLSPD_POS)
+#define PHYC_RLSPD_10		0
+#define PHYC_RGMII_HD		(1 << 1)
+#define PHYC_RGMII_LINK		(1 << 0)
+
+/* Management Configuration Registers (MC), [1] p57 */
+#define MC_MDIOEN		(1 << 6)
+#define MC_CLKDIV_POS		0
+#define MC_CLKDIV_MASK		(0x3F << MC_CLKDIV_POS)
+
+/*
+ *             fHOSTCLK          fMDC =                  fHOSTCLK
+ * fMDC = -------------------   --------->   MC_CLKDIV = -------- - 1
+ *        (1 + MC_CLKDIV) * 2    2.5 MHz                   5MHz
+ */
+#define MC_CLKDIV(f, m)		((f / (2 * m)) - 1)
+#define MC_CLKDIV_25(f)		MC_CLKDIV(f, 2500000)
+#define MC_CLKDIV_20(f)		MC_CLKDIV(f, 2000000)
+#define MC_CLKDIV_15(f)		MC_CLKDIV(f, 1500000)
+#define MC_CLKDIV_10(f)		MC_CLKDIV(f, 1000000)
+
+/* Unicast Address Word 0, 1 Registers (UAW0, UAW1), [1] p58-59 */
+#define UAW0_UADDR_POS		0
+#define UAW0_UADDR_MASK		(~0UL << UAW0_UADDR_POS)
+#define UAW1_UADDR_POS		0
+#define UAW1_UADDR_MASK		(0xFFFF << UAW1_UADDR_POS)
+
+/* Multicast Address Word 0, 1 Registers (MAW0, MAW1), [1] p60 */
+#define MAW0_MADDR_POS		0
+#define MAW0_MADDR_MASK		(~0UL << MAW0_MADDR_POS)
+#define MAW1_RNW		(1 << 23)
+#define MAW1_MAIDX_POS		16
+#define MAW1_MAIDX_MASK		(3 << MAW1_MAIDX_POS)
+#define MAW1_MADDR_POS		0
+#define MAW1_MADDR_MASK		(0xFFFF << MAW1_MADDR_POS)
+
+/* Address Filter Mode Registers (AFM), [1] p63 */
+#define AFM_PM			(1 << 31)
+
+/* Interrupt Status, Enable Registers (TIS, TIE), [1] p63-65 */
+#define TISE_CFG_W		(1 << 6)
+#define TISE_CFG_R		(1 << 5)
+#define TISE_AF_W		(1 << 4)
+#define TISE_AF_R		(1 << 3)
+#define TISE_MIIM_W		(1 << 2)
+#define TISE_MIIM_R		(1 << 1)
+#define TISE_FABR_R		(1 << 0)
+
+/* MII Management Write Data Registers (MIIMWD), [1] p66 */
+#define MIIMWD_DATA_POS		0
+#define MIIMWD_DATA_MASK	(0xFFFF << MIIMWD_DATA_POS)
+
+/* Ethernet interface ready status */
+int ll_temac_check_status(struct temac_reg *regs, u32 mask);
+
+/* Indirect write to ll_temac. */
+int ll_temac_indirect_set(struct temac_reg *regs, u16 regn, u32 reg_data);
+
+/* Indirect read from ll_temac. */
+int ll_temac_indirect_get(struct temac_reg *regs, u16 regn, u32* reg_data);
+
+struct ll_temac {
+	phys_addr_t		ctrladdr;
+	phys_addr_t		sdma_reg_addr[SDMA_CTRL_REGNUMS];
+
+	unsigned		(*in32)(phys_addr_t);
+	void			(*out32)(phys_addr_t, unsigned);
+
+	int			(*ctrlinit) (struct eth_device *);
+	int			(*ctrlhalt) (struct eth_device *);
+	int			(*ctrlreset) (struct eth_device *);
+
+	int			phyaddr;
+	struct phy_device	*phydev;
+	struct mii_dev		*bus;
+	char			mdio_busname[MDIO_NAME_LEN];
+};
+
+#endif /* _XILINX_LL_TEMAC_ */