779fea6010
The RX overflow is reported in bit 2 on real hardware and Linux driver for the same device already has this defined correctly. This fixes frequent interrupt storms seen on RouterStation Pro boards. Discussed with: gonzo
473 lines
16 KiB
C
473 lines
16 KiB
C
/*-
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* Copyright (c) 2009 Oleksandr Tymoshenko
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#ifndef _AR71XX_REG_H_
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#define _AR71XX_REG_H_
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/* PCI region */
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#define AR71XX_PCI_MEM_BASE 0x10000000
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/*
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* PCI mem windows is 0x08000000 bytes long but we exclude control
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* region from the resource manager
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*/
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#define AR71XX_PCI_MEM_SIZE 0x07000000
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#define AR71XX_PCI_IRQ_START 0
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#define AR71XX_PCI_IRQ_END 2
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#define AR71XX_PCI_NIRQS 3
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/*
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* PCI devices slots are starting from this number
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*/
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#define AR71XX_PCI_BASE_SLOT 17
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/* PCI config registers */
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#define AR71XX_PCI_LCONF_CMD 0x17010000
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#define PCI_LCONF_CMD_READ 0x00000000
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#define PCI_LCONF_CMD_WRITE 0x00010000
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#define AR71XX_PCI_LCONF_WRITE_DATA 0x17010004
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#define AR71XX_PCI_LCONF_READ_DATA 0x17010008
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#define AR71XX_PCI_CONF_ADDR 0x1701000C
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#define AR71XX_PCI_CONF_CMD 0x17010010
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#define PCI_CONF_CMD_READ 0x0000000A
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#define PCI_CONF_CMD_WRITE 0x0000000B
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#define AR71XX_PCI_CONF_WRITE_DATA 0x17010014
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#define AR71XX_PCI_CONF_READ_DATA 0x17010018
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#define AR71XX_PCI_ERROR 0x1701001C
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#define AR71XX_PCI_ERROR_ADDR 0x17010020
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#define AR71XX_PCI_AHB_ERROR 0x17010024
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#define AR71XX_PCI_AHB_ERROR_ADDR 0x17010028
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/* APB region */
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/*
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* Size is not really true actual APB window size is
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* 0x01000000 but it should handle OHCI memory as well
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* because this controller's interrupt is routed through
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* APB.
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*/
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#define AR71XX_APB_BASE 0x18000000
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#define AR71XX_APB_SIZE 0x06000000
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/* DDR registers */
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#define AR71XX_DDR_CONFIG 0x18000000
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#define AR71XX_DDR_CONFIG2 0x18000004
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#define AR71XX_DDR_MODE_REGISTER 0x18000008
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#define AR71XX_DDR_EXT_MODE_REGISTER 0x1800000C
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#define AR71XX_DDR_CONTROL 0x18000010
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#define AR71XX_DDR_REFRESH 0x18000014
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#define AR71XX_DDR_RD_DATA_THIS_CYCLE 0x18000018
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#define AR71XX_TAP_CONTROL0 0x1800001C
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#define AR71XX_TAP_CONTROL1 0x18000020
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#define AR71XX_TAP_CONTROL2 0x18000024
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#define AR71XX_TAP_CONTROL3 0x18000028
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#define AR71XX_PCI_WINDOW0 0x1800007C
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#define AR71XX_PCI_WINDOW1 0x18000080
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#define AR71XX_PCI_WINDOW2 0x18000084
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#define AR71XX_PCI_WINDOW3 0x18000088
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#define AR71XX_PCI_WINDOW4 0x1800008C
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#define AR71XX_PCI_WINDOW5 0x18000090
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#define AR71XX_PCI_WINDOW6 0x18000094
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#define AR71XX_PCI_WINDOW7 0x18000098
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#define AR71XX_WB_FLUSH_GE0 0x1800009C
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#define AR71XX_WB_FLUSH_GE1 0x180000A0
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#define AR71XX_WB_FLUSH_USB 0x180000A4
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#define AR71XX_WB_FLUSH_PCI 0x180000A8
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/*
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* Values for PCI_WINDOW_X registers
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*/
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#define PCI_WINDOW0_ADDR 0x10000000
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#define PCI_WINDOW1_ADDR 0x11000000
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#define PCI_WINDOW2_ADDR 0x12000000
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#define PCI_WINDOW3_ADDR 0x13000000
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#define PCI_WINDOW4_ADDR 0x14000000
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#define PCI_WINDOW5_ADDR 0x15000000
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#define PCI_WINDOW6_ADDR 0x16000000
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#define PCI_WINDOW7_ADDR 0x17000000
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/* This value enables acces to PCI config registers */
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#define PCI_WINDOW7_CONF_ADDR 0x07000000
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#define AR71XX_UART_ADDR 0x18020000
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#define AR71XX_USB_CTRL_FLADJ 0x18030000
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#define USB_CTRL_FLADJ_HOST_SHIFT 12
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#define USB_CTRL_FLADJ_A5_SHIFT 10
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#define USB_CTRL_FLADJ_A4_SHIFT 8
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#define USB_CTRL_FLADJ_A3_SHIFT 6
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#define USB_CTRL_FLADJ_A2_SHIFT 4
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#define USB_CTRL_FLADJ_A1_SHIFT 2
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#define USB_CTRL_FLADJ_A0_SHIFT 0
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#define AR71XX_USB_CTRL_CONFIG 0x18030004
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#define USB_CTRL_CONFIG_OHCI_DES_SWAP (1 << 19)
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#define USB_CTRL_CONFIG_OHCI_BUF_SWAP (1 << 18)
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#define USB_CTRL_CONFIG_EHCI_DES_SWAP (1 << 17)
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#define USB_CTRL_CONFIG_EHCI_BUF_SWAP (1 << 16)
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#define USB_CTRL_CONFIG_DISABLE_XTL (1 << 13)
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#define USB_CTRL_CONFIG_OVERRIDE_XTL (1 << 12)
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#define USB_CTRL_CONFIG_CLK_SEL_SHIFT 4
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#define USB_CTRL_CONFIG_CLK_SEL_MASK 3
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#define USB_CTRL_CONFIG_CLK_SEL_12 0
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#define USB_CTRL_CONFIG_CLK_SEL_24 1
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#define USB_CTRL_CONFIG_CLK_SEL_48 2
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#define USB_CTRL_CONFIG_OVER_CURRENT_AS_GPIO (1 << 8)
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#define USB_CTRL_CONFIG_SS_SIMULATION_MODE (1 << 2)
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#define USB_CTRL_CONFIG_RESUME_UTMI_PLS_DIS (1 << 1)
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#define USB_CTRL_CONFIG_UTMI_BACKWARD_ENB (1 << 0)
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#define AR71XX_BASE_FREQ 40000000
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#define AR71XX_PLL_CPU_CONFIG 0x18050000
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#define PLL_SW_UPDATE (1 << 31)
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#define PLL_LOCKED (1 << 30)
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#define PLL_AHB_DIV_SHIFT 20
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#define PLL_AHB_DIV_MASK 7
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#define PLL_DDR_DIV_SEL_SHIFT 18
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#define PLL_DDR_DIV_SEL_MASK 3
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#define PLL_CPU_DIV_SEL_SHIFT 16
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#define PLL_CPU_DIV_SEL_MASK 3
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#define PLL_LOOP_BW_SHIFT 12
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#define PLL_LOOP_BW_MASK 0xf
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#define PLL_DIV_IN_SHIFT 10
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#define PLL_DIV_IN_MASK 3
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#define PLL_DIV_OUT_SHIFT 8
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#define PLL_DIV_OUT_MASK 3
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#define PLL_FB_SHIFT 3
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#define PLL_FB_MASK 0x1f
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#define PLL_BYPASS (1 << 1)
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#define PLL_POWER_DOWN (1 << 0)
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#define AR71XX_PLL_SEC_CONFIG 0x18050004
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#define AR71XX_PLL_CPU_CLK_CTRL 0x18050008
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#define AR71XX_PLL_ETH_INT0_CLK 0x18050010
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#define AR71XX_PLL_ETH_INT1_CLK 0x18050014
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#define XPLL_ETH_INT_CLK_10 0x00991099
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#define XPLL_ETH_INT_CLK_100 0x00441011
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#define XPLL_ETH_INT_CLK_1000 0x13110000
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#define XPLL_ETH_INT_CLK_1000_GMII 0x14110000
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#define PLL_ETH_INT_CLK_10 0x00991099
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#define PLL_ETH_INT_CLK_100 0x00001099
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#define PLL_ETH_INT_CLK_1000 0x00110000
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#define AR71XX_PLL_ETH_EXT_CLK 0x18050018
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#define AR71XX_PLL_PCI_CLK 0x1805001C
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#define AR71XX_RST_WDOG_CONTROL 0x18060008
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#define RST_WDOG_LAST (1 << 31)
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#define RST_WDOG_ACTION_MASK 3
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#define RST_WDOG_ACTION_RESET 3
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#define RST_WDOG_ACTION_NMI 2
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#define RST_WDOG_ACTION_GP_INTR 1
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#define RST_WDOG_ACTION_NOACTION 0
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#define AR71XX_RST_WDOG_TIMER 0x1806000C
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/*
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* APB interrupt status and mask register and interrupt bit numbers for
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*/
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#define AR71XX_MISC_INTR_STATUS 0x18060010
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#define AR71XX_MISC_INTR_MASK 0x18060014
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#define MISC_INTR_TIMER 0
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#define MISC_INTR_ERROR 1
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#define MISC_INTR_GPIO 2
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#define MISC_INTR_UART 3
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#define MISC_INTR_WATCHDOG 4
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#define MISC_INTR_PERF 5
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#define MISC_INTR_OHCI 6
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#define MISC_INTR_DMA 7
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#define AR71XX_PCI_INTR_STATUS 0x18060018
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#define AR71XX_PCI_INTR_MASK 0x1806001C
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#define PCI_INTR_CORE (1 << 4)
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#define AR71XX_RST_RESET 0x18060024
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#define RST_RESET_FULL_CHIP (1 << 24) /* Same as pulling
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the reset pin */
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#define RST_RESET_CPU_COLD (1 << 20) /* Cold reset */
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#define RST_RESET_GE1_MAC (1 << 13)
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#define RST_RESET_GE1_PHY (1 << 12)
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#define RST_RESET_GE0_MAC (1 << 9)
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#define RST_RESET_GE0_PHY (1 << 8)
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#define RST_RESET_USB_OHCI_DLL (1 << 6)
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#define RST_RESET_USB_HOST (1 << 5)
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#define RST_RESET_USB_PHY (1 << 4)
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#define RST_RESET_PCI_BUS (1 << 1)
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#define RST_RESET_PCI_CORE (1 << 0)
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/*
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* GigE adapters region
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*/
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#define AR71XX_MAC0_BASE 0x19000000
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#define AR71XX_MAC1_BASE 0x1A000000
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/*
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* All 5 PHYs accessible only through MAC0 register space
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*/
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#define AR71XX_MII_BASE 0x19000000
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#define AR71XX_MAC_CFG1 0x00
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#define MAC_CFG1_SOFT_RESET (1 << 31)
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#define MAC_CFG1_SIMUL_RESET (1 << 30)
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#define MAC_CFG1_MAC_RX_BLOCK_RESET (1 << 19)
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#define MAC_CFG1_MAC_TX_BLOCK_RESET (1 << 18)
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#define MAC_CFG1_RX_FUNC_RESET (1 << 17)
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#define MAC_CFG1_TX_FUNC_RESET (1 << 16)
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#define MAC_CFG1_LOOPBACK (1 << 8)
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#define MAC_CFG1_RXFLOW_CTRL (1 << 5)
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#define MAC_CFG1_TXFLOW_CTRL (1 << 4)
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#define MAC_CFG1_SYNC_RX (1 << 3)
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#define MAC_CFG1_RX_ENABLE (1 << 2)
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#define MAC_CFG1_SYNC_TX (1 << 1)
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#define MAC_CFG1_TX_ENABLE (1 << 0)
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#define AR71XX_MAC_CFG2 0x04
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#define MAC_CFG2_PREAMBLE_LEN_MASK 0xf
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#define MAC_CFG2_PREAMBLE_LEN_SHIFT 12
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#define MAC_CFG2_IFACE_MODE_1000 (2 << 8)
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#define MAC_CFG2_IFACE_MODE_10_100 (1 << 8)
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#define MAC_CFG2_IFACE_MODE_SHIFT 8
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#define MAC_CFG2_IFACE_MODE_MASK 3
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#define MAC_CFG2_HUGE_FRAME (1 << 5)
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#define MAC_CFG2_LENGTH_FIELD (1 << 4)
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#define MAC_CFG2_ENABLE_PADCRC (1 << 2)
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#define MAC_CFG2_ENABLE_CRC (1 << 1)
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#define MAC_CFG2_FULL_DUPLEX (1 << 0)
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#define AR71XX_MAC_IFG 0x08
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#define AR71XX_MAC_HDUPLEX 0x0C
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#define AR71XX_MAC_MAX_FRAME_LEN 0x10
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#define AR71XX_MAC_MII_CFG 0x20
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#define MAC_MII_CFG_RESET (1 << 31)
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#define MAC_MII_CFG_SCAN_AUTO_INC (1 << 5)
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#define MAC_MII_CFG_PREAMBLE_SUP (1 << 4)
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#define MAC_MII_CFG_CLOCK_SELECT_MASK 0x7
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#define MAC_MII_CFG_CLOCK_DIV_4 0
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#define MAC_MII_CFG_CLOCK_DIV_6 2
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#define MAC_MII_CFG_CLOCK_DIV_8 3
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#define MAC_MII_CFG_CLOCK_DIV_10 4
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#define MAC_MII_CFG_CLOCK_DIV_14 5
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#define MAC_MII_CFG_CLOCK_DIV_20 6
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#define MAC_MII_CFG_CLOCK_DIV_28 7
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#define AR71XX_MAC_MII_CMD 0x24
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#define MAC_MII_CMD_SCAN_CYCLE (1 << 1)
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#define MAC_MII_CMD_READ 1
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#define MAC_MII_CMD_WRITE 0
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#define AR71XX_MAC_MII_ADDR 0x28
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#define MAC_MII_PHY_ADDR_SHIFT 8
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#define MAC_MII_PHY_ADDR_MASK 0xff
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#define MAC_MII_REG_MASK 0x1f
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#define AR71XX_MAC_MII_CONTROL 0x2C
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#define MAC_MII_CONTROL_MASK 0xffff
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#define AR71XX_MAC_MII_STATUS 0x30
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#define MAC_MII_STATUS_MASK 0xffff
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#define AR71XX_MAC_MII_INDICATOR 0x34
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#define MAC_MII_INDICATOR_NOT_VALID (1 << 2)
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#define MAC_MII_INDICATOR_SCANNING (1 << 1)
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#define MAC_MII_INDICATOR_BUSY (1 << 0)
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#define AR71XX_MAC_IFCONTROL 0x38
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#define MAC_IFCONTROL_SPEED (1 << 16)
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#define AR71XX_MAC_STA_ADDR1 0x40
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#define AR71XX_MAC_STA_ADDR2 0x44
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#define AR71XX_MAC_FIFO_CFG0 0x48
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#define FIFO_CFG0_TX_FABRIC (1 << 4)
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#define FIFO_CFG0_TX_SYSTEM (1 << 3)
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#define FIFO_CFG0_RX_FABRIC (1 << 2)
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#define FIFO_CFG0_RX_SYSTEM (1 << 1)
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#define FIFO_CFG0_WATERMARK (1 << 0)
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#define FIFO_CFG0_ALL ((1 << 5) - 1)
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#define FIFO_CFG0_ENABLE_SHIFT 8
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#define AR71XX_MAC_FIFO_CFG1 0x4C
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#define AR71XX_MAC_FIFO_CFG2 0x50
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#define AR71XX_MAC_FIFO_TX_THRESHOLD 0x54
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#define AR71XX_MAC_FIFO_RX_FILTMATCH 0x58
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/*
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* These flags applicable both to AR71XX_MAC_FIFO_RX_FILTMASK and
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* to AR71XX_MAC_FIFO_RX_FILTMATCH
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*/
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#define FIFO_RX_MATCH_UNICAST (1 << 17)
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#define FIFO_RX_MATCH_TRUNC_FRAME (1 << 16)
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#define FIFO_RX_MATCH_VLAN_TAG (1 << 15)
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#define FIFO_RX_MATCH_UNSUP_OPCODE (1 << 14)
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#define FIFO_RX_MATCH_PAUSE_FRAME (1 << 13)
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#define FIFO_RX_MATCH_CTRL_FRAME (1 << 12)
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#define FIFO_RX_MATCH_LONG_EVENT (1 << 11)
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#define FIFO_RX_MATCH_DRIBBLE_NIBBLE (1 << 10)
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#define FIFO_RX_MATCH_BCAST (1 << 9)
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#define FIFO_RX_MATCH_MCAST (1 << 8)
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#define FIFO_RX_MATCH_OK (1 << 7)
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#define FIFO_RX_MATCH_OORANGE (1 << 6)
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#define FIFO_RX_MATCH_LEN_MSMTCH (1 << 5)
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#define FIFO_RX_MATCH_CRC_ERROR (1 << 4)
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#define FIFO_RX_MATCH_CODE_ERROR (1 << 3)
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#define FIFO_RX_MATCH_FALSE_CARRIER (1 << 2)
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#define FIFO_RX_MATCH_RX_DV_EVENT (1 << 1)
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#define FIFO_RX_MATCH_DROP_EVENT (1 << 0)
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/*
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* Exclude unicast and truncated frames from matching
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*/
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#define FIFO_RX_FILTMATCH_DEFAULT \
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(FIFO_RX_MATCH_VLAN_TAG | \
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FIFO_RX_MATCH_UNSUP_OPCODE | \
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FIFO_RX_MATCH_PAUSE_FRAME | \
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FIFO_RX_MATCH_CTRL_FRAME | \
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FIFO_RX_MATCH_LONG_EVENT | \
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FIFO_RX_MATCH_DRIBBLE_NIBBLE | \
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FIFO_RX_MATCH_BCAST | \
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FIFO_RX_MATCH_MCAST | \
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FIFO_RX_MATCH_OK | \
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FIFO_RX_MATCH_OORANGE | \
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FIFO_RX_MATCH_LEN_MSMTCH | \
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FIFO_RX_MATCH_CRC_ERROR | \
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FIFO_RX_MATCH_CODE_ERROR | \
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FIFO_RX_MATCH_FALSE_CARRIER | \
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FIFO_RX_MATCH_RX_DV_EVENT | \
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FIFO_RX_MATCH_DROP_EVENT)
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#define AR71XX_MAC_FIFO_RX_FILTMASK 0x5C
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#define FIFO_RX_MASK_BYTE_MODE (1 << 19)
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#define FIFO_RX_MASK_NO_SHORT_FRAME (1 << 18)
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#define FIFO_RX_MASK_BIT17 (1 << 17)
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#define FIFO_RX_MASK_BIT16 (1 << 16)
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#define FIFO_RX_MASK_TRUNC_FRAME (1 << 15)
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#define FIFO_RX_MASK_LONG_EVENT (1 << 14)
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#define FIFO_RX_MASK_VLAN_TAG (1 << 13)
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#define FIFO_RX_MASK_UNSUP_OPCODE (1 << 12)
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#define FIFO_RX_MASK_PAUSE_FRAME (1 << 11)
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#define FIFO_RX_MASK_CTRL_FRAME (1 << 10)
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#define FIFO_RX_MASK_DRIBBLE_NIBBLE (1 << 9)
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#define FIFO_RX_MASK_BCAST (1 << 8)
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#define FIFO_RX_MASK_MCAST (1 << 7)
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#define FIFO_RX_MASK_OK (1 << 6)
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#define FIFO_RX_MASK_OORANGE (1 << 5)
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#define FIFO_RX_MASK_LEN_MSMTCH (1 << 4)
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#define FIFO_RX_MASK_CODE_ERROR (1 << 3)
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#define FIFO_RX_MASK_FALSE_CARRIER (1 << 2)
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#define FIFO_RX_MASK_RX_DV_EVENT (1 << 1)
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#define FIFO_RX_MASK_DROP_EVENT (1 << 0)
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/*
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* Len. mismatch, unsup. opcode and short frmae bits excluded
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*/
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#define FIFO_RX_FILTMASK_DEFAULT \
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(FIFO_RX_MASK_NO_SHORT_FRAME | \
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FIFO_RX_MASK_BIT17 | \
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FIFO_RX_MASK_BIT16 | \
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FIFO_RX_MASK_TRUNC_FRAME | \
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FIFO_RX_MASK_LONG_EVENT | \
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FIFO_RX_MASK_VLAN_TAG | \
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FIFO_RX_MASK_PAUSE_FRAME | \
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FIFO_RX_MASK_CTRL_FRAME | \
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FIFO_RX_MASK_DRIBBLE_NIBBLE | \
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FIFO_RX_MASK_BCAST | \
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FIFO_RX_MASK_MCAST | \
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FIFO_RX_MASK_OK | \
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FIFO_RX_MASK_OORANGE | \
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FIFO_RX_MASK_CODE_ERROR | \
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FIFO_RX_MASK_FALSE_CARRIER | \
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FIFO_RX_MASK_RX_DV_EVENT | \
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FIFO_RX_MASK_DROP_EVENT)
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#define AR71XX_MAC_FIFO_RAM0 0x60
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#define AR71XX_MAC_FIFO_RAM1 0x64
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#define AR71XX_MAC_FIFO_RAM2 0x68
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#define AR71XX_MAC_FIFO_RAM3 0x6C
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#define AR71XX_MAC_FIFO_RAM4 0x70
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#define AR71XX_MAC_FIFO_RAM5 0x74
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#define AR71XX_MAC_FIFO_RAM6 0x78
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#define AR71XX_DMA_TX_CONTROL 0x180
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#define DMA_TX_CONTROL_EN (1 << 0)
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#define AR71XX_DMA_TX_DESC 0x184
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#define AR71XX_DMA_TX_STATUS 0x188
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#define DMA_TX_STATUS_PCOUNT_MASK 0xff
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#define DMA_TX_STATUS_PCOUNT_SHIFT 16
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#define DMA_TX_STATUS_BUS_ERROR (1 << 3)
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#define DMA_TX_STATUS_UNDERRUN (1 << 1)
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#define DMA_TX_STATUS_PKT_SENT (1 << 0)
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#define AR71XX_DMA_RX_CONTROL 0x18C
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#define DMA_RX_CONTROL_EN (1 << 0)
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#define AR71XX_DMA_RX_DESC 0x190
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#define AR71XX_DMA_RX_STATUS 0x194
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#define DMA_RX_STATUS_PCOUNT_MASK 0xff
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#define DMA_RX_STATUS_PCOUNT_SHIFT 16
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#define DMA_RX_STATUS_BUS_ERROR (1 << 3)
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#define DMA_RX_STATUS_OVERFLOW (1 << 2)
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#define DMA_RX_STATUS_PKT_RECVD (1 << 0)
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#define AR71XX_DMA_INTR 0x198
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#define AR71XX_DMA_INTR_STATUS 0x19C
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#define DMA_INTR_ALL ((1 << 8) - 1)
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#define DMA_INTR_RX_BUS_ERROR (1 << 7)
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#define DMA_INTR_RX_OVERFLOW (1 << 6)
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#define DMA_INTR_RX_PKT_RCVD (1 << 4)
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#define DMA_INTR_TX_BUS_ERROR (1 << 3)
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#define DMA_INTR_TX_UNDERRUN (1 << 1)
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#define DMA_INTR_TX_PKT_SENT (1 << 0)
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#define AR71XX_SPI_BASE 0x1f000000
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#define AR71XX_SPI_FS 0x00
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#define AR71XX_SPI_CTRL 0x04
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#define SPI_CTRL_REMAP_DISABLE (1 << 6)
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#define SPI_CTRL_CLOCK_DIVIDER_MASK ((1 << 6) - 1)
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#define AR71XX_SPI_IO_CTRL 0x08
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#define SPI_IO_CTRL_CS2 (1 << 18)
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#define SPI_IO_CTRL_CS1 (1 << 17)
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#define SPI_IO_CTRL_CS0 (1 << 16)
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#define SPI_IO_CTRL_CSMASK (7 << 16)
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#define SPI_IO_CTRL_CLK (1 << 8)
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#define SPI_IO_CTRL_DO 1
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#define AR71XX_SPI_RDS 0x0C
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#define ATH_READ_REG(reg) \
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*((volatile uint32_t *)MIPS_PHYS_TO_KSEG1((reg)))
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#define ATH_WRITE_REG(reg, val) \
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*((volatile uint32_t *)MIPS_PHYS_TO_KSEG1((reg))) = (val)
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static inline uint64_t
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ar71xx_cpu_freq(void)
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{
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uint32_t pll_config, div;
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uint64_t freq;
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/* PLL freq */
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pll_config = ATH_READ_REG(AR71XX_PLL_CPU_CONFIG);
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div = ((pll_config >> PLL_FB_SHIFT) & PLL_FB_MASK) + 1;
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freq = div * AR71XX_BASE_FREQ;
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/* CPU freq */
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div = ((pll_config >> PLL_CPU_DIV_SEL_SHIFT) & PLL_CPU_DIV_SEL_MASK)
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+ 1;
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freq = freq / div;
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return (freq);
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}
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static inline uint64_t
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ar71xx_ahb_freq(void)
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{
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uint32_t pll_config, div;
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uint64_t freq;
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/* PLL freq */
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pll_config = ATH_READ_REG(AR71XX_PLL_CPU_CONFIG);
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/* AHB freq */
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div = (((pll_config >> PLL_AHB_DIV_SHIFT) & PLL_AHB_DIV_MASK) + 1) * 2;
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freq = ar71xx_cpu_freq() / div;
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return (freq);
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}
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#endif /* _AR71XX_REG_H_ */
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