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Diffstat (limited to '')
| -rw-r--r-- | drivers/marvell/comphy/phy-comphy-common.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/drivers/marvell/comphy/phy-comphy-common.h b/drivers/marvell/comphy/phy-comphy-common.h new file mode 100644 index 0000000..ba5d255 --- /dev/null +++ b/drivers/marvell/comphy/phy-comphy-common.h @@ -0,0 +1,167 @@ +/* + * Copyright (C) 2018-2021 Marvell International Ltd. + * + * SPDX-License-Identifier: BSD-3-Clause + * https://spdx.org/licenses + */ + +/* Marvell CP110 ana A3700 common */ + +#ifndef PHY_COMPHY_COMMON_H +#define PHY_COMPHY_COMMON_H + +/* #define DEBUG_COMPHY */ +#ifdef DEBUG_COMPHY +#define debug(format...) printf(format) +#else +#define debug(format, arg...) +#endif + +/* A lane is described by 4 fields: + * - bit 1~0 represent comphy polarity invert + * - bit 7~2 represent comphy speed + * - bit 11~8 represent unit index + * - bit 16~12 represent mode + * - bit 17 represent comphy indication of clock source + * - bit 20~18 represents pcie width (in case of pcie comphy config.) + * - bit 21 represents the source of the request (Linux/Bootloader), + * (reguired only for PCIe!) + * - bit 31~22 reserved + */ + +#define COMPHY_INVERT_OFFSET 0 +#define COMPHY_INVERT_LEN 2 +#define COMPHY_INVERT_MASK COMPHY_MASK(COMPHY_INVERT_OFFSET, \ + COMPHY_INVERT_LEN) +#define COMPHY_SPEED_OFFSET (COMPHY_INVERT_OFFSET + COMPHY_INVERT_LEN) +#define COMPHY_SPEED_LEN 6 +#define COMPHY_SPEED_MASK COMPHY_MASK(COMPHY_SPEED_OFFSET, \ + COMPHY_SPEED_LEN) +#define COMPHY_UNIT_ID_OFFSET (COMPHY_SPEED_OFFSET + COMPHY_SPEED_LEN) +#define COMPHY_UNIT_ID_LEN 4 +#define COMPHY_UNIT_ID_MASK COMPHY_MASK(COMPHY_UNIT_ID_OFFSET, \ + COMPHY_UNIT_ID_LEN) +#define COMPHY_MODE_OFFSET (COMPHY_UNIT_ID_OFFSET + COMPHY_UNIT_ID_LEN) +#define COMPHY_MODE_LEN 5 +#define COMPHY_MODE_MASK COMPHY_MASK(COMPHY_MODE_OFFSET, COMPHY_MODE_LEN) +#define COMPHY_CLK_SRC_OFFSET (COMPHY_MODE_OFFSET + COMPHY_MODE_LEN) +#define COMPHY_CLK_SRC_LEN 1 +#define COMPHY_CLK_SRC_MASK COMPHY_MASK(COMPHY_CLK_SRC_OFFSET, \ + COMPHY_CLK_SRC_LEN) +#define COMPHY_PCI_WIDTH_OFFSET (COMPHY_CLK_SRC_OFFSET + COMPHY_CLK_SRC_LEN) +#define COMPHY_PCI_WIDTH_LEN 3 +#define COMPHY_PCI_WIDTH_MASK COMPHY_MASK(COMPHY_PCI_WIDTH_OFFSET, \ + COMPHY_PCI_WIDTH_LEN) +#define COMPHY_PCI_CALLER_OFFSET \ + (COMPHY_PCI_WIDTH_OFFSET + COMPHY_PCI_WIDTH_LEN) +#define COMPHY_PCI_CALLER_LEN 1 +#define COMPHY_PCI_CALLER_MASK COMPHY_MASK(COMPHY_PCI_CALLER_OFFSET, \ + COMPHY_PCI_CALLER_LEN) + +#define COMPHY_MASK(offset, len) (((1 << (len)) - 1) << (offset)) + +/* Macro which extracts mode from lane description */ +#define COMPHY_GET_MODE(x) (((x) & COMPHY_MODE_MASK) >> \ + COMPHY_MODE_OFFSET) +/* Macro which extracts unit index from lane description */ +#define COMPHY_GET_ID(x) (((x) & COMPHY_UNIT_ID_MASK) >> \ + COMPHY_UNIT_ID_OFFSET) +/* Macro which extracts speed from lane description */ +#define COMPHY_GET_SPEED(x) (((x) & COMPHY_SPEED_MASK) >> \ + COMPHY_SPEED_OFFSET) +/* Macro which extracts clock source indication from lane description */ +#define COMPHY_GET_CLK_SRC(x) (((x) & COMPHY_CLK_SRC_MASK) >> \ + COMPHY_CLK_SRC_OFFSET) +/* Macro which extracts pcie width indication from lane description */ +#define COMPHY_GET_PCIE_WIDTH(x) (((x) & COMPHY_PCI_WIDTH_MASK) >> \ + COMPHY_PCI_WIDTH_OFFSET) + +/* Macro which extracts the caller for pcie power on from lane description */ +#define COMPHY_GET_CALLER(x) (((x) & COMPHY_PCI_CALLER_MASK) >> \ + COMPHY_PCI_CALLER_OFFSET) + +/* Macro which extracts the polarity invert from lane description */ +#define COMPHY_GET_POLARITY_INVERT(x) (((x) & COMPHY_INVERT_MASK) >> \ + COMPHY_INVERT_OFFSET) + + +#define COMPHY_SATA_MODE 0x1 +#define COMPHY_SGMII_MODE 0x2 /* SGMII 1G */ +#define COMPHY_2500BASEX_MODE 0x3 /* 2500Base-X */ +#define COMPHY_USB3H_MODE 0x4 +#define COMPHY_USB3D_MODE 0x5 +#define COMPHY_PCIE_MODE 0x6 +#define COMPHY_RXAUI_MODE 0x7 +#define COMPHY_XFI_MODE 0x8 +#define COMPHY_SFI_MODE 0x9 +#define COMPHY_USB3_MODE 0xa +#define COMPHY_AP_MODE 0xb + +#define COMPHY_UNUSED 0xFFFFFFFF + +/* Polarity invert macro */ +#define COMPHY_POLARITY_NO_INVERT 0 +#define COMPHY_POLARITY_TXD_INVERT 1 +#define COMPHY_POLARITY_RXD_INVERT 2 +#define COMPHY_POLARITY_ALL_INVERT (COMPHY_POLARITY_TXD_INVERT | \ + COMPHY_POLARITY_RXD_INVERT) + +enum reg_width_type { + REG_16BIT = 0, + REG_32BIT, +}; + +enum { + COMPHY_LANE0 = 0, + COMPHY_LANE1, + COMPHY_LANE2, + COMPHY_LANE3, + COMPHY_LANE4, + COMPHY_LANE5, + COMPHY_LANE_MAX, +}; + +static inline uint32_t polling_with_timeout(uintptr_t addr, uint32_t val, + uint32_t mask, + uint32_t usec_timeout, + enum reg_width_type type) +{ + uint32_t data; + + do { + udelay(1); + if (type == REG_16BIT) + data = mmio_read_16(addr) & mask; + else + data = mmio_read_32(addr) & mask; + } while (data != val && --usec_timeout > 0); + + if (usec_timeout == 0) + return data; + + return 0; +} + +static inline void reg_set(uintptr_t addr, uint32_t data, uint32_t mask) +{ + debug("<atf>: WR to addr = 0x%lx, data = 0x%x (mask = 0x%x) - ", + addr, data, mask); + debug("old value = 0x%x ==> ", mmio_read_32(addr)); + mmio_clrsetbits_32(addr, mask, data & mask); + + debug("new val 0x%x\n", mmio_read_32(addr)); +} + +static inline void __unused reg_set16(uintptr_t addr, uint16_t data, + uint16_t mask) +{ + + debug("<atf>: WR to addr = 0x%lx, data = 0x%x (mask = 0x%x) - ", + addr, data, mask); + debug("old value = 0x%x ==> ", mmio_read_16(addr)); + mmio_clrsetbits_16(addr, mask, data & mask); + + debug("new val 0x%x\n", mmio_read_16(addr)); +} + +#endif /* PHY_COMPHY_COMMON_H */ |