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7b41187122
Probably a copy 'n' paste error, 'offset_address' has never been part of the pch_phub_{read,write}_gbe_mac_addr() functions. Squashes the following W=1 warnings: drivers/misc/pch_phub.c:450: warning: Excess function parameter 'offset_address' description in 'pch_phub_read_gbe_mac_addr' drivers/misc/pch_phub.c:462: warning: Excess function parameter 'offset_address' description in 'pch_phub_write_gbe_mac_addr' Cc: Masayuki Ohtak <masa-korg@dsn.okisemi.com> Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20200701085853.164358-15-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
879 lines
27 KiB
C
879 lines
27 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/uaccess.h>
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#include <linux/string.h>
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#include <linux/pci.h>
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#include <linux/io.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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#include <linux/if_ether.h>
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#include <linux/ctype.h>
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#include <linux/dmi.h>
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#include <linux/of.h>
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#define PHUB_STATUS 0x00 /* Status Register offset */
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#define PHUB_CONTROL 0x04 /* Control Register offset */
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#define PHUB_TIMEOUT 0x05 /* Time out value for Status Register */
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#define PCH_PHUB_ROM_WRITE_ENABLE 0x01 /* Enabling for writing ROM */
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#define PCH_PHUB_ROM_WRITE_DISABLE 0x00 /* Disabling for writing ROM */
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#define PCH_PHUB_MAC_START_ADDR_EG20T 0x14 /* MAC data area start address
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offset */
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#define PCH_PHUB_MAC_START_ADDR_ML7223 0x20C /* MAC data area start address
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offset */
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#define PCH_PHUB_ROM_START_ADDR_EG20T 0x80 /* ROM data area start address offset
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(Intel EG20T PCH)*/
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#define PCH_PHUB_ROM_START_ADDR_ML7213 0x400 /* ROM data area start address
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offset(LAPIS Semicon ML7213)
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*/
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#define PCH_PHUB_ROM_START_ADDR_ML7223 0x400 /* ROM data area start address
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offset(LAPIS Semicon ML7223)
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*/
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/* MAX number of INT_REDUCE_CONTROL registers */
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#define MAX_NUM_INT_REDUCE_CONTROL_REG 128
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#define PCI_DEVICE_ID_PCH1_PHUB 0x8801
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#define PCH_MINOR_NOS 1
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#define CLKCFG_CAN_50MHZ 0x12000000
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#define CLKCFG_CANCLK_MASK 0xFF000000
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#define CLKCFG_UART_MASK 0xFFFFFF
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/* CM-iTC */
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#define CLKCFG_UART_48MHZ (1 << 16)
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#define CLKCFG_UART_25MHZ (2 << 16)
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#define CLKCFG_BAUDDIV (2 << 20)
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#define CLKCFG_PLL2VCO (8 << 9)
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#define CLKCFG_UARTCLKSEL (1 << 18)
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/* Macros for ML7213 */
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#define PCI_DEVICE_ID_ROHM_ML7213_PHUB 0x801A
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/* Macros for ML7223 */
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#define PCI_DEVICE_ID_ROHM_ML7223_mPHUB 0x8012 /* for Bus-m */
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#define PCI_DEVICE_ID_ROHM_ML7223_nPHUB 0x8002 /* for Bus-n */
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/* Macros for ML7831 */
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#define PCI_DEVICE_ID_ROHM_ML7831_PHUB 0x8801
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/* SROM ACCESS Macro */
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#define PCH_WORD_ADDR_MASK (~((1 << 2) - 1))
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/* Registers address offset */
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#define PCH_PHUB_ID_REG 0x0000
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#define PCH_PHUB_QUEUE_PRI_VAL_REG 0x0004
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#define PCH_PHUB_RC_QUEUE_MAXSIZE_REG 0x0008
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#define PCH_PHUB_BRI_QUEUE_MAXSIZE_REG 0x000C
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#define PCH_PHUB_COMP_RESP_TIMEOUT_REG 0x0010
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#define PCH_PHUB_BUS_SLAVE_CONTROL_REG 0x0014
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#define PCH_PHUB_DEADLOCK_AVOID_TYPE_REG 0x0018
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#define PCH_PHUB_INTPIN_REG_WPERMIT_REG0 0x0020
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#define PCH_PHUB_INTPIN_REG_WPERMIT_REG1 0x0024
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#define PCH_PHUB_INTPIN_REG_WPERMIT_REG2 0x0028
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#define PCH_PHUB_INTPIN_REG_WPERMIT_REG3 0x002C
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#define PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE 0x0040
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#define CLKCFG_REG_OFFSET 0x500
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#define FUNCSEL_REG_OFFSET 0x508
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#define PCH_PHUB_OROM_SIZE 15360
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/**
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* struct pch_phub_reg - PHUB register structure
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* @phub_id_reg: PHUB_ID register val
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* @q_pri_val_reg: QUEUE_PRI_VAL register val
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* @rc_q_maxsize_reg: RC_QUEUE_MAXSIZE register val
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* @bri_q_maxsize_reg: BRI_QUEUE_MAXSIZE register val
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* @comp_resp_timeout_reg: COMP_RESP_TIMEOUT register val
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* @bus_slave_control_reg: BUS_SLAVE_CONTROL_REG register val
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* @deadlock_avoid_type_reg: DEADLOCK_AVOID_TYPE register val
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* @intpin_reg_wpermit_reg0: INTPIN_REG_WPERMIT register 0 val
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* @intpin_reg_wpermit_reg1: INTPIN_REG_WPERMIT register 1 val
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* @intpin_reg_wpermit_reg2: INTPIN_REG_WPERMIT register 2 val
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* @intpin_reg_wpermit_reg3: INTPIN_REG_WPERMIT register 3 val
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* @int_reduce_control_reg: INT_REDUCE_CONTROL registers val
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* @clkcfg_reg: CLK CFG register val
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* @funcsel_reg: Function select register value
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* @pch_phub_base_address: Register base address
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* @pch_phub_extrom_base_address: external rom base address
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* @pch_mac_start_address: MAC address area start address
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* @pch_opt_rom_start_address: Option ROM start address
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* @ioh_type: Save IOH type
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* @pdev: pointer to pci device struct
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*/
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struct pch_phub_reg {
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u32 phub_id_reg;
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u32 q_pri_val_reg;
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u32 rc_q_maxsize_reg;
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u32 bri_q_maxsize_reg;
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u32 comp_resp_timeout_reg;
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u32 bus_slave_control_reg;
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u32 deadlock_avoid_type_reg;
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u32 intpin_reg_wpermit_reg0;
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u32 intpin_reg_wpermit_reg1;
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u32 intpin_reg_wpermit_reg2;
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u32 intpin_reg_wpermit_reg3;
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u32 int_reduce_control_reg[MAX_NUM_INT_REDUCE_CONTROL_REG];
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u32 clkcfg_reg;
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u32 funcsel_reg;
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void __iomem *pch_phub_base_address;
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void __iomem *pch_phub_extrom_base_address;
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u32 pch_mac_start_address;
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u32 pch_opt_rom_start_address;
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int ioh_type;
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struct pci_dev *pdev;
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};
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/* SROM SPEC for MAC address assignment offset */
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static const int pch_phub_mac_offset[ETH_ALEN] = {0x3, 0x2, 0x1, 0x0, 0xb, 0xa};
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static DEFINE_MUTEX(pch_phub_mutex);
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/**
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* pch_phub_read_modify_write_reg() - Reading modifying and writing register
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* @chip: Pointer to the PHUB register structure
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* @reg_addr_offset: Register offset address value.
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* @data: Writing value.
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* @mask: Mask value.
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*/
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static void pch_phub_read_modify_write_reg(struct pch_phub_reg *chip,
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unsigned int reg_addr_offset,
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unsigned int data, unsigned int mask)
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{
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void __iomem *reg_addr = chip->pch_phub_base_address + reg_addr_offset;
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iowrite32(((ioread32(reg_addr) & ~mask)) | data, reg_addr);
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}
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/* pch_phub_save_reg_conf - saves register configuration */
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static void __maybe_unused pch_phub_save_reg_conf(struct pci_dev *pdev)
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{
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unsigned int i;
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struct pch_phub_reg *chip = pci_get_drvdata(pdev);
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void __iomem *p = chip->pch_phub_base_address;
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chip->phub_id_reg = ioread32(p + PCH_PHUB_ID_REG);
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chip->q_pri_val_reg = ioread32(p + PCH_PHUB_QUEUE_PRI_VAL_REG);
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chip->rc_q_maxsize_reg = ioread32(p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG);
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chip->bri_q_maxsize_reg = ioread32(p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG);
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chip->comp_resp_timeout_reg =
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ioread32(p + PCH_PHUB_COMP_RESP_TIMEOUT_REG);
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chip->bus_slave_control_reg =
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ioread32(p + PCH_PHUB_BUS_SLAVE_CONTROL_REG);
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chip->deadlock_avoid_type_reg =
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ioread32(p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG);
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chip->intpin_reg_wpermit_reg0 =
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ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0);
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chip->intpin_reg_wpermit_reg1 =
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ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1);
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chip->intpin_reg_wpermit_reg2 =
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ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2);
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chip->intpin_reg_wpermit_reg3 =
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ioread32(p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3);
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dev_dbg(&pdev->dev, "%s : "
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"chip->phub_id_reg=%x, "
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"chip->q_pri_val_reg=%x, "
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"chip->rc_q_maxsize_reg=%x, "
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"chip->bri_q_maxsize_reg=%x, "
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"chip->comp_resp_timeout_reg=%x, "
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"chip->bus_slave_control_reg=%x, "
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"chip->deadlock_avoid_type_reg=%x, "
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"chip->intpin_reg_wpermit_reg0=%x, "
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"chip->intpin_reg_wpermit_reg1=%x, "
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"chip->intpin_reg_wpermit_reg2=%x, "
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"chip->intpin_reg_wpermit_reg3=%x\n", __func__,
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chip->phub_id_reg,
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chip->q_pri_val_reg,
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chip->rc_q_maxsize_reg,
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chip->bri_q_maxsize_reg,
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chip->comp_resp_timeout_reg,
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chip->bus_slave_control_reg,
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chip->deadlock_avoid_type_reg,
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chip->intpin_reg_wpermit_reg0,
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chip->intpin_reg_wpermit_reg1,
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chip->intpin_reg_wpermit_reg2,
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chip->intpin_reg_wpermit_reg3);
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for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) {
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chip->int_reduce_control_reg[i] =
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ioread32(p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i);
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dev_dbg(&pdev->dev, "%s : "
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"chip->int_reduce_control_reg[%d]=%x\n",
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__func__, i, chip->int_reduce_control_reg[i]);
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}
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chip->clkcfg_reg = ioread32(p + CLKCFG_REG_OFFSET);
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if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
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chip->funcsel_reg = ioread32(p + FUNCSEL_REG_OFFSET);
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}
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/* pch_phub_restore_reg_conf - restore register configuration */
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static void __maybe_unused pch_phub_restore_reg_conf(struct pci_dev *pdev)
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{
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unsigned int i;
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struct pch_phub_reg *chip = pci_get_drvdata(pdev);
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void __iomem *p;
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p = chip->pch_phub_base_address;
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iowrite32(chip->phub_id_reg, p + PCH_PHUB_ID_REG);
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iowrite32(chip->q_pri_val_reg, p + PCH_PHUB_QUEUE_PRI_VAL_REG);
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iowrite32(chip->rc_q_maxsize_reg, p + PCH_PHUB_RC_QUEUE_MAXSIZE_REG);
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iowrite32(chip->bri_q_maxsize_reg, p + PCH_PHUB_BRI_QUEUE_MAXSIZE_REG);
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iowrite32(chip->comp_resp_timeout_reg,
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p + PCH_PHUB_COMP_RESP_TIMEOUT_REG);
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iowrite32(chip->bus_slave_control_reg,
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p + PCH_PHUB_BUS_SLAVE_CONTROL_REG);
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iowrite32(chip->deadlock_avoid_type_reg,
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p + PCH_PHUB_DEADLOCK_AVOID_TYPE_REG);
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iowrite32(chip->intpin_reg_wpermit_reg0,
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p + PCH_PHUB_INTPIN_REG_WPERMIT_REG0);
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iowrite32(chip->intpin_reg_wpermit_reg1,
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p + PCH_PHUB_INTPIN_REG_WPERMIT_REG1);
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iowrite32(chip->intpin_reg_wpermit_reg2,
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p + PCH_PHUB_INTPIN_REG_WPERMIT_REG2);
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iowrite32(chip->intpin_reg_wpermit_reg3,
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p + PCH_PHUB_INTPIN_REG_WPERMIT_REG3);
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dev_dbg(&pdev->dev, "%s : "
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"chip->phub_id_reg=%x, "
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"chip->q_pri_val_reg=%x, "
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"chip->rc_q_maxsize_reg=%x, "
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"chip->bri_q_maxsize_reg=%x, "
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"chip->comp_resp_timeout_reg=%x, "
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"chip->bus_slave_control_reg=%x, "
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"chip->deadlock_avoid_type_reg=%x, "
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"chip->intpin_reg_wpermit_reg0=%x, "
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"chip->intpin_reg_wpermit_reg1=%x, "
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"chip->intpin_reg_wpermit_reg2=%x, "
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"chip->intpin_reg_wpermit_reg3=%x\n", __func__,
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chip->phub_id_reg,
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chip->q_pri_val_reg,
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chip->rc_q_maxsize_reg,
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chip->bri_q_maxsize_reg,
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chip->comp_resp_timeout_reg,
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chip->bus_slave_control_reg,
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chip->deadlock_avoid_type_reg,
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chip->intpin_reg_wpermit_reg0,
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chip->intpin_reg_wpermit_reg1,
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chip->intpin_reg_wpermit_reg2,
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chip->intpin_reg_wpermit_reg3);
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for (i = 0; i < MAX_NUM_INT_REDUCE_CONTROL_REG; i++) {
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iowrite32(chip->int_reduce_control_reg[i],
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p + PCH_PHUB_INT_REDUCE_CONTROL_REG_BASE + 4 * i);
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dev_dbg(&pdev->dev, "%s : "
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"chip->int_reduce_control_reg[%d]=%x\n",
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__func__, i, chip->int_reduce_control_reg[i]);
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}
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iowrite32(chip->clkcfg_reg, p + CLKCFG_REG_OFFSET);
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if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
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iowrite32(chip->funcsel_reg, p + FUNCSEL_REG_OFFSET);
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}
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/**
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* pch_phub_read_serial_rom() - Reading Serial ROM
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* @chip: Pointer to the PHUB register structure
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* @offset_address: Serial ROM offset address to read.
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* @data: Read buffer for specified Serial ROM value.
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*/
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static void pch_phub_read_serial_rom(struct pch_phub_reg *chip,
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unsigned int offset_address, u8 *data)
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{
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void __iomem *mem_addr = chip->pch_phub_extrom_base_address +
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offset_address;
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*data = ioread8(mem_addr);
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}
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/**
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* pch_phub_write_serial_rom() - Writing Serial ROM
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* @chip: Pointer to the PHUB register structure
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* @offset_address: Serial ROM offset address.
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* @data: Serial ROM value to write.
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*/
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static int pch_phub_write_serial_rom(struct pch_phub_reg *chip,
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unsigned int offset_address, u8 data)
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{
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void __iomem *mem_addr = chip->pch_phub_extrom_base_address +
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(offset_address & PCH_WORD_ADDR_MASK);
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int i;
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unsigned int word_data;
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unsigned int pos;
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unsigned int mask;
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pos = (offset_address % 4) * 8;
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mask = ~(0xFF << pos);
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iowrite32(PCH_PHUB_ROM_WRITE_ENABLE,
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chip->pch_phub_extrom_base_address + PHUB_CONTROL);
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word_data = ioread32(mem_addr);
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iowrite32((word_data & mask) | (u32)data << pos, mem_addr);
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i = 0;
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while (ioread8(chip->pch_phub_extrom_base_address +
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PHUB_STATUS) != 0x00) {
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msleep(1);
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if (i == PHUB_TIMEOUT)
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return -ETIMEDOUT;
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i++;
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}
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iowrite32(PCH_PHUB_ROM_WRITE_DISABLE,
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chip->pch_phub_extrom_base_address + PHUB_CONTROL);
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return 0;
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}
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/**
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* pch_phub_read_serial_rom_val() - Read Serial ROM value
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* @chip: Pointer to the PHUB register structure
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* @offset_address: Serial ROM address offset value.
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* @data: Serial ROM value to read.
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*/
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static void pch_phub_read_serial_rom_val(struct pch_phub_reg *chip,
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unsigned int offset_address, u8 *data)
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{
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unsigned int mem_addr;
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mem_addr = chip->pch_mac_start_address +
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pch_phub_mac_offset[offset_address];
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pch_phub_read_serial_rom(chip, mem_addr, data);
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}
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/**
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* pch_phub_write_serial_rom_val() - writing Serial ROM value
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* @chip: Pointer to the PHUB register structure
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* @offset_address: Serial ROM address offset value.
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* @data: Serial ROM value.
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*/
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static int pch_phub_write_serial_rom_val(struct pch_phub_reg *chip,
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unsigned int offset_address, u8 data)
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{
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int retval;
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unsigned int mem_addr;
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mem_addr = chip->pch_mac_start_address +
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pch_phub_mac_offset[offset_address];
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retval = pch_phub_write_serial_rom(chip, mem_addr, data);
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return retval;
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}
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/* pch_phub_gbe_serial_rom_conf - makes Serial ROM header format configuration
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* for Gigabit Ethernet MAC address
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*/
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static int pch_phub_gbe_serial_rom_conf(struct pch_phub_reg *chip)
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{
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int retval;
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retval = pch_phub_write_serial_rom(chip, 0x0b, 0xbc);
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retval |= pch_phub_write_serial_rom(chip, 0x0a, 0x10);
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retval |= pch_phub_write_serial_rom(chip, 0x09, 0x01);
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retval |= pch_phub_write_serial_rom(chip, 0x08, 0x02);
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retval |= pch_phub_write_serial_rom(chip, 0x0f, 0x00);
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retval |= pch_phub_write_serial_rom(chip, 0x0e, 0x00);
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retval |= pch_phub_write_serial_rom(chip, 0x0d, 0x00);
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retval |= pch_phub_write_serial_rom(chip, 0x0c, 0x80);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x13, 0xbc);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x12, 0x10);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x11, 0x01);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x10, 0x18);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1b, 0xbc);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1a, 0x10);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x19, 0x01);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x18, 0x19);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x23, 0xbc);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x22, 0x10);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x21, 0x01);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x20, 0x3a);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x27, 0x01);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x26, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x25, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x24, 0x00);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* pch_phub_gbe_serial_rom_conf_mp - makes SerialROM header format configuration
|
|
* for Gigabit Ethernet MAC address
|
|
*/
|
|
static int pch_phub_gbe_serial_rom_conf_mp(struct pch_phub_reg *chip)
|
|
{
|
|
int retval;
|
|
u32 offset_addr;
|
|
|
|
offset_addr = 0x200;
|
|
retval = pch_phub_write_serial_rom(chip, 0x03 + offset_addr, 0xbc);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x02 + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x01 + offset_addr, 0x40);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x00 + offset_addr, 0x02);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x07 + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x06 + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x05 + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x04 + offset_addr, 0x80);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x0b + offset_addr, 0xbc);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x0a + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x09 + offset_addr, 0x40);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x08 + offset_addr, 0x18);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x13 + offset_addr, 0xbc);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x12 + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x11 + offset_addr, 0x40);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x10 + offset_addr, 0x19);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1b + offset_addr, 0xbc);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1a + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x19 + offset_addr, 0x40);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x18 + offset_addr, 0x3a);
|
|
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1f + offset_addr, 0x01);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1e + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1d + offset_addr, 0x00);
|
|
retval |= pch_phub_write_serial_rom(chip, 0x1c + offset_addr, 0x00);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* pch_phub_read_gbe_mac_addr() - Read Gigabit Ethernet MAC address
|
|
* @chip: Pointer to the PHUB register structure
|
|
* @data: Buffer of the Gigabit Ethernet MAC address value.
|
|
*/
|
|
static void pch_phub_read_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data)
|
|
{
|
|
int i;
|
|
for (i = 0; i < ETH_ALEN; i++)
|
|
pch_phub_read_serial_rom_val(chip, i, &data[i]);
|
|
}
|
|
|
|
/**
|
|
* pch_phub_write_gbe_mac_addr() - Write MAC address
|
|
* @chip: Pointer to the PHUB register structure
|
|
* @data: Gigabit Ethernet MAC address value.
|
|
*/
|
|
static int pch_phub_write_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data)
|
|
{
|
|
int retval;
|
|
int i;
|
|
|
|
if ((chip->ioh_type == 1) || (chip->ioh_type == 5)) /* EG20T or ML7831*/
|
|
retval = pch_phub_gbe_serial_rom_conf(chip);
|
|
else /* ML7223 */
|
|
retval = pch_phub_gbe_serial_rom_conf_mp(chip);
|
|
if (retval)
|
|
return retval;
|
|
|
|
for (i = 0; i < ETH_ALEN; i++) {
|
|
retval = pch_phub_write_serial_rom_val(chip, i, data[i]);
|
|
if (retval)
|
|
return retval;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
static ssize_t pch_phub_bin_read(struct file *filp, struct kobject *kobj,
|
|
struct bin_attribute *attr, char *buf,
|
|
loff_t off, size_t count)
|
|
{
|
|
unsigned int rom_signature;
|
|
unsigned char rom_length;
|
|
unsigned int tmp;
|
|
unsigned int addr_offset;
|
|
unsigned int orom_size;
|
|
int ret;
|
|
int err;
|
|
ssize_t rom_size;
|
|
|
|
struct pch_phub_reg *chip = dev_get_drvdata(kobj_to_dev(kobj));
|
|
|
|
ret = mutex_lock_interruptible(&pch_phub_mutex);
|
|
if (ret) {
|
|
err = -ERESTARTSYS;
|
|
goto return_err_nomutex;
|
|
}
|
|
|
|
/* Get Rom signature */
|
|
chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
|
|
if (!chip->pch_phub_extrom_base_address) {
|
|
err = -ENODATA;
|
|
goto exrom_map_err;
|
|
}
|
|
|
|
pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address,
|
|
(unsigned char *)&rom_signature);
|
|
rom_signature &= 0xff;
|
|
pch_phub_read_serial_rom(chip, chip->pch_opt_rom_start_address + 1,
|
|
(unsigned char *)&tmp);
|
|
rom_signature |= (tmp & 0xff) << 8;
|
|
if (rom_signature == 0xAA55) {
|
|
pch_phub_read_serial_rom(chip,
|
|
chip->pch_opt_rom_start_address + 2,
|
|
&rom_length);
|
|
orom_size = rom_length * 512;
|
|
if (orom_size < off) {
|
|
addr_offset = 0;
|
|
goto return_ok;
|
|
}
|
|
if (orom_size < count) {
|
|
addr_offset = 0;
|
|
goto return_ok;
|
|
}
|
|
|
|
for (addr_offset = 0; addr_offset < count; addr_offset++) {
|
|
pch_phub_read_serial_rom(chip,
|
|
chip->pch_opt_rom_start_address + addr_offset + off,
|
|
&buf[addr_offset]);
|
|
}
|
|
} else {
|
|
err = -ENODATA;
|
|
goto return_err;
|
|
}
|
|
return_ok:
|
|
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
|
|
mutex_unlock(&pch_phub_mutex);
|
|
return addr_offset;
|
|
|
|
return_err:
|
|
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
|
|
exrom_map_err:
|
|
mutex_unlock(&pch_phub_mutex);
|
|
return_err_nomutex:
|
|
return err;
|
|
}
|
|
|
|
static ssize_t pch_phub_bin_write(struct file *filp, struct kobject *kobj,
|
|
struct bin_attribute *attr,
|
|
char *buf, loff_t off, size_t count)
|
|
{
|
|
int err;
|
|
unsigned int addr_offset;
|
|
int ret;
|
|
ssize_t rom_size;
|
|
struct pch_phub_reg *chip = dev_get_drvdata(kobj_to_dev(kobj));
|
|
|
|
ret = mutex_lock_interruptible(&pch_phub_mutex);
|
|
if (ret)
|
|
return -ERESTARTSYS;
|
|
|
|
if (off > PCH_PHUB_OROM_SIZE) {
|
|
addr_offset = 0;
|
|
goto return_ok;
|
|
}
|
|
if (count > PCH_PHUB_OROM_SIZE) {
|
|
addr_offset = 0;
|
|
goto return_ok;
|
|
}
|
|
|
|
chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
|
|
if (!chip->pch_phub_extrom_base_address) {
|
|
err = -ENOMEM;
|
|
goto exrom_map_err;
|
|
}
|
|
|
|
for (addr_offset = 0; addr_offset < count; addr_offset++) {
|
|
if (PCH_PHUB_OROM_SIZE < off + addr_offset)
|
|
goto return_ok;
|
|
|
|
ret = pch_phub_write_serial_rom(chip,
|
|
chip->pch_opt_rom_start_address + addr_offset + off,
|
|
buf[addr_offset]);
|
|
if (ret) {
|
|
err = ret;
|
|
goto return_err;
|
|
}
|
|
}
|
|
|
|
return_ok:
|
|
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
|
|
mutex_unlock(&pch_phub_mutex);
|
|
return addr_offset;
|
|
|
|
return_err:
|
|
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
|
|
|
|
exrom_map_err:
|
|
mutex_unlock(&pch_phub_mutex);
|
|
return err;
|
|
}
|
|
|
|
static ssize_t show_pch_mac(struct device *dev, struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 mac[8];
|
|
struct pch_phub_reg *chip = dev_get_drvdata(dev);
|
|
ssize_t rom_size;
|
|
|
|
chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
|
|
if (!chip->pch_phub_extrom_base_address)
|
|
return -ENOMEM;
|
|
|
|
pch_phub_read_gbe_mac_addr(chip, mac);
|
|
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
|
|
|
|
return sprintf(buf, "%pM\n", mac);
|
|
}
|
|
|
|
static ssize_t store_pch_mac(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count)
|
|
{
|
|
u8 mac[ETH_ALEN];
|
|
ssize_t rom_size;
|
|
struct pch_phub_reg *chip = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
if (!mac_pton(buf, mac))
|
|
return -EINVAL;
|
|
|
|
chip->pch_phub_extrom_base_address = pci_map_rom(chip->pdev, &rom_size);
|
|
if (!chip->pch_phub_extrom_base_address)
|
|
return -ENOMEM;
|
|
|
|
ret = pch_phub_write_gbe_mac_addr(chip, mac);
|
|
pci_unmap_rom(chip->pdev, chip->pch_phub_extrom_base_address);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(pch_mac, S_IRUGO | S_IWUSR, show_pch_mac, store_pch_mac);
|
|
|
|
static const struct bin_attribute pch_bin_attr = {
|
|
.attr = {
|
|
.name = "pch_firmware",
|
|
.mode = S_IRUGO | S_IWUSR,
|
|
},
|
|
.size = PCH_PHUB_OROM_SIZE + 1,
|
|
.read = pch_phub_bin_read,
|
|
.write = pch_phub_bin_write,
|
|
};
|
|
|
|
static int pch_phub_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
int ret;
|
|
struct pch_phub_reg *chip;
|
|
|
|
chip = kzalloc(sizeof(struct pch_phub_reg), GFP_KERNEL);
|
|
if (chip == NULL)
|
|
return -ENOMEM;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev,
|
|
"%s : pci_enable_device FAILED(ret=%d)", __func__, ret);
|
|
goto err_pci_enable_dev;
|
|
}
|
|
dev_dbg(&pdev->dev, "%s : pci_enable_device returns %d\n", __func__,
|
|
ret);
|
|
|
|
ret = pci_request_regions(pdev, KBUILD_MODNAME);
|
|
if (ret) {
|
|
dev_err(&pdev->dev,
|
|
"%s : pci_request_regions FAILED(ret=%d)", __func__, ret);
|
|
goto err_req_regions;
|
|
}
|
|
dev_dbg(&pdev->dev, "%s : "
|
|
"pci_request_regions returns %d\n", __func__, ret);
|
|
|
|
chip->pch_phub_base_address = pci_iomap(pdev, 1, 0);
|
|
|
|
|
|
if (chip->pch_phub_base_address == NULL) {
|
|
dev_err(&pdev->dev, "%s : pci_iomap FAILED", __func__);
|
|
ret = -ENOMEM;
|
|
goto err_pci_iomap;
|
|
}
|
|
dev_dbg(&pdev->dev, "%s : pci_iomap SUCCESS and value "
|
|
"in pch_phub_base_address variable is %p\n", __func__,
|
|
chip->pch_phub_base_address);
|
|
|
|
chip->pdev = pdev; /* Save pci device struct */
|
|
|
|
if (id->driver_data == 1) { /* EG20T PCH */
|
|
const char *board_name;
|
|
unsigned int prefetch = 0x000affaa;
|
|
|
|
if (pdev->dev.of_node)
|
|
of_property_read_u32(pdev->dev.of_node,
|
|
"intel,eg20t-prefetch",
|
|
&prefetch);
|
|
|
|
ret = sysfs_create_file(&pdev->dev.kobj,
|
|
&dev_attr_pch_mac.attr);
|
|
if (ret)
|
|
goto err_sysfs_create;
|
|
|
|
ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
|
|
if (ret)
|
|
goto exit_bin_attr;
|
|
|
|
pch_phub_read_modify_write_reg(chip,
|
|
(unsigned int)CLKCFG_REG_OFFSET,
|
|
CLKCFG_CAN_50MHZ,
|
|
CLKCFG_CANCLK_MASK);
|
|
|
|
/* quirk for CM-iTC board */
|
|
board_name = dmi_get_system_info(DMI_BOARD_NAME);
|
|
if (board_name && strstr(board_name, "CM-iTC"))
|
|
pch_phub_read_modify_write_reg(chip,
|
|
(unsigned int)CLKCFG_REG_OFFSET,
|
|
CLKCFG_UART_48MHZ | CLKCFG_BAUDDIV |
|
|
CLKCFG_PLL2VCO | CLKCFG_UARTCLKSEL,
|
|
CLKCFG_UART_MASK);
|
|
|
|
/* set the prefech value */
|
|
iowrite32(prefetch, chip->pch_phub_base_address + 0x14);
|
|
/* set the interrupt delay value */
|
|
iowrite32(0x25, chip->pch_phub_base_address + 0x44);
|
|
chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T;
|
|
chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T;
|
|
|
|
/* quirk for MIPS Boston platform */
|
|
if (pdev->dev.of_node) {
|
|
if (of_machine_is_compatible("img,boston")) {
|
|
pch_phub_read_modify_write_reg(chip,
|
|
(unsigned int)CLKCFG_REG_OFFSET,
|
|
CLKCFG_UART_25MHZ,
|
|
CLKCFG_UART_MASK);
|
|
}
|
|
}
|
|
} else if (id->driver_data == 2) { /* ML7213 IOH */
|
|
ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
|
|
if (ret)
|
|
goto err_sysfs_create;
|
|
/* set the prefech value
|
|
* Device2(USB OHCI #1/ USB EHCI #1/ USB Device):a
|
|
* Device4(SDIO #0,1,2):f
|
|
* Device6(SATA 2):f
|
|
* Device8(USB OHCI #0/ USB EHCI #0):a
|
|
*/
|
|
iowrite32(0x000affa0, chip->pch_phub_base_address + 0x14);
|
|
chip->pch_opt_rom_start_address =\
|
|
PCH_PHUB_ROM_START_ADDR_ML7213;
|
|
} else if (id->driver_data == 3) { /* ML7223 IOH Bus-m*/
|
|
/* set the prefech value
|
|
* Device8(GbE)
|
|
*/
|
|
iowrite32(0x000a0000, chip->pch_phub_base_address + 0x14);
|
|
/* set the interrupt delay value */
|
|
iowrite32(0x25, chip->pch_phub_base_address + 0x140);
|
|
chip->pch_opt_rom_start_address =\
|
|
PCH_PHUB_ROM_START_ADDR_ML7223;
|
|
chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_ML7223;
|
|
} else if (id->driver_data == 4) { /* ML7223 IOH Bus-n*/
|
|
ret = sysfs_create_file(&pdev->dev.kobj,
|
|
&dev_attr_pch_mac.attr);
|
|
if (ret)
|
|
goto err_sysfs_create;
|
|
ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
|
|
if (ret)
|
|
goto exit_bin_attr;
|
|
/* set the prefech value
|
|
* Device2(USB OHCI #0,1,2,3/ USB EHCI #0):a
|
|
* Device4(SDIO #0,1):f
|
|
* Device6(SATA 2):f
|
|
*/
|
|
iowrite32(0x0000ffa0, chip->pch_phub_base_address + 0x14);
|
|
chip->pch_opt_rom_start_address =\
|
|
PCH_PHUB_ROM_START_ADDR_ML7223;
|
|
chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_ML7223;
|
|
} else if (id->driver_data == 5) { /* ML7831 */
|
|
ret = sysfs_create_file(&pdev->dev.kobj,
|
|
&dev_attr_pch_mac.attr);
|
|
if (ret)
|
|
goto err_sysfs_create;
|
|
|
|
ret = sysfs_create_bin_file(&pdev->dev.kobj, &pch_bin_attr);
|
|
if (ret)
|
|
goto exit_bin_attr;
|
|
|
|
/* set the prefech value */
|
|
iowrite32(0x000affaa, chip->pch_phub_base_address + 0x14);
|
|
/* set the interrupt delay value */
|
|
iowrite32(0x25, chip->pch_phub_base_address + 0x44);
|
|
chip->pch_opt_rom_start_address = PCH_PHUB_ROM_START_ADDR_EG20T;
|
|
chip->pch_mac_start_address = PCH_PHUB_MAC_START_ADDR_EG20T;
|
|
}
|
|
|
|
chip->ioh_type = id->driver_data;
|
|
pci_set_drvdata(pdev, chip);
|
|
|
|
return 0;
|
|
exit_bin_attr:
|
|
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr);
|
|
|
|
err_sysfs_create:
|
|
pci_iounmap(pdev, chip->pch_phub_base_address);
|
|
err_pci_iomap:
|
|
pci_release_regions(pdev);
|
|
err_req_regions:
|
|
pci_disable_device(pdev);
|
|
err_pci_enable_dev:
|
|
kfree(chip);
|
|
dev_err(&pdev->dev, "%s returns %d\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
static void pch_phub_remove(struct pci_dev *pdev)
|
|
{
|
|
struct pch_phub_reg *chip = pci_get_drvdata(pdev);
|
|
|
|
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_pch_mac.attr);
|
|
sysfs_remove_bin_file(&pdev->dev.kobj, &pch_bin_attr);
|
|
pci_iounmap(pdev, chip->pch_phub_base_address);
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
kfree(chip);
|
|
}
|
|
|
|
static int __maybe_unused pch_phub_suspend(struct device *dev_d)
|
|
{
|
|
device_wakeup_disable(dev_d);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused pch_phub_resume(struct device *dev_d)
|
|
{
|
|
device_wakeup_disable(dev_d);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct pci_device_id pch_phub_pcidev_id[] = {
|
|
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH1_PHUB), 1, },
|
|
{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7213_PHUB), 2, },
|
|
{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7223_mPHUB), 3, },
|
|
{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7223_nPHUB), 4, },
|
|
{ PCI_VDEVICE(ROHM, PCI_DEVICE_ID_ROHM_ML7831_PHUB), 5, },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, pch_phub_pcidev_id);
|
|
|
|
static SIMPLE_DEV_PM_OPS(pch_phub_pm_ops, pch_phub_suspend, pch_phub_resume);
|
|
|
|
static struct pci_driver pch_phub_driver = {
|
|
.name = "pch_phub",
|
|
.id_table = pch_phub_pcidev_id,
|
|
.probe = pch_phub_probe,
|
|
.remove = pch_phub_remove,
|
|
.driver.pm = &pch_phub_pm_ops,
|
|
};
|
|
|
|
module_pci_driver(pch_phub_driver);
|
|
|
|
MODULE_DESCRIPTION("Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7223) PHUB");
|
|
MODULE_LICENSE("GPL");
|