Return-path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120]:45908 "EHLO cdptpa-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751958Ab2LVXSL (ORCPT ); Sat, 22 Dec 2012 18:18:11 -0500 From: Solomon Peachy To: linux-wireless@vger.kernel.org Cc: Solomon Peachy Subject: [PATCH 01/17] cw1200: v2: low-level hardware I/O functions Date: Sat, 22 Dec 2012 18:18:16 -0500 Message-Id: <1356218312-13616-2-git-send-email-pizza@shaftnet.org> (sfid-20121223_001821_093091_4F4D3994) In-Reply-To: <1356218312-13616-1-git-send-email-pizza@shaftnet.org> References: <1356218312-13616-1-git-send-email-pizza@shaftnet.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: Signed-off-by: Solomon Peachy --- drivers/staging/cw1200/hwio.c | 334 ++++++++++++++++++++++++++++++++++++++++++ drivers/staging/cw1200/hwio.h | 250 +++++++++++++++++++++++++++++++ 2 files changed, 584 insertions(+) create mode 100644 drivers/staging/cw1200/hwio.c create mode 100644 drivers/staging/cw1200/hwio.h diff --git a/drivers/staging/cw1200/hwio.c b/drivers/staging/cw1200/hwio.c new file mode 100644 index 0000000..a702902 --- /dev/null +++ b/drivers/staging/cw1200/hwio.c @@ -0,0 +1,334 @@ +/* + * Low-level device IO routines for ST-Ericsson CW1200 drivers + * + * Copyright (c) 2010, ST-Ericsson + * Author: Dmitry Tarnyagin + * + * Based on: + * ST-Ericsson UMAC CW1200 driver, which is + * Copyright (c) 2010, ST-Ericsson + * Author: Ajitpal Singh + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include + +#include "cw1200.h" +#include "hwio.h" +#include "sbus.h" + + /* Sdio addr is 4*spi_addr */ +#define SPI_REG_ADDR_TO_SDIO(spi_reg_addr) ((spi_reg_addr) << 2) +#define SDIO_ADDR17BIT(buf_id, mpf, rfu, reg_id_ofs) \ + ((((buf_id) & 0x1F) << 7) \ + | (((mpf) & 1) << 6) \ + | (((rfu) & 1) << 5) \ + | (((reg_id_ofs) & 0x1F) << 0)) +#define MAX_RETRY 3 + + +static int __cw1200_reg_read(struct cw1200_common *priv, u16 addr, + void *buf, size_t buf_len, int buf_id) +{ + u16 addr_sdio; + u32 sdio_reg_addr_17bit ; + + /* Check if buffer is aligned to 4 byte boundary */ + if (WARN_ON(((unsigned long)buf & 3) && (buf_len > 4))) { + pr_err("%s: buffer is not aligned.\n", __func__); + return -EINVAL; + } + + /* Convert to SDIO Register Address */ + addr_sdio = SPI_REG_ADDR_TO_SDIO(addr); + sdio_reg_addr_17bit = SDIO_ADDR17BIT(buf_id, 0, 0, addr_sdio); + + BUG_ON(!priv->sbus_ops); + return priv->sbus_ops->sbus_memcpy_fromio(priv->sbus_priv, + sdio_reg_addr_17bit, + buf, buf_len); +} + +static int __cw1200_reg_write(struct cw1200_common *priv, u16 addr, + const void *buf, size_t buf_len, int buf_id) +{ + u16 addr_sdio; + u32 sdio_reg_addr_17bit ; + + /* Convert to SDIO Register Address */ + addr_sdio = SPI_REG_ADDR_TO_SDIO(addr); + sdio_reg_addr_17bit = SDIO_ADDR17BIT(buf_id, 0, 0, addr_sdio); + + BUG_ON(!priv->sbus_ops); + return priv->sbus_ops->sbus_memcpy_toio(priv->sbus_priv, + sdio_reg_addr_17bit, + buf, buf_len); +} + +static inline int __cw1200_reg_read_32(struct cw1200_common *priv, + u16 addr, u32 *val) +{ + int i = __cw1200_reg_read(priv, addr, val, sizeof(val), 0); + *val = le32_to_cpu(*val); + return i; +} + +static inline int __cw1200_reg_write_32(struct cw1200_common *priv, + u16 addr, u32 val) +{ + val = cpu_to_le32(val); + return __cw1200_reg_write(priv, addr, &val, sizeof(val), 0); +} + +static inline int __cw1200_reg_read_16(struct cw1200_common *priv, + u16 addr, u16 *val) +{ + int i = __cw1200_reg_read(priv, addr, val, sizeof(val), 0); + *val = le16_to_cpu(*val); + return i; +} + +static inline int __cw1200_reg_write_16(struct cw1200_common *priv, + u16 addr, u16 val) +{ + val = cpu_to_le16(val); + return __cw1200_reg_write(priv, addr, &val, sizeof(val), 0); +} + +int cw1200_reg_read(struct cw1200_common *priv, u16 addr, void *buf, + size_t buf_len) +{ + int ret; + BUG_ON(!priv->sbus_ops); + priv->sbus_ops->lock(priv->sbus_priv); + ret = __cw1200_reg_read(priv, addr, buf, buf_len, 0); + priv->sbus_ops->unlock(priv->sbus_priv); + return ret; +} + +int cw1200_reg_write(struct cw1200_common *priv, u16 addr, const void *buf, + size_t buf_len) +{ + int ret; + BUG_ON(!priv->sbus_ops); + priv->sbus_ops->lock(priv->sbus_priv); + ret = __cw1200_reg_write(priv, addr, buf, buf_len, 0); + priv->sbus_ops->unlock(priv->sbus_priv); + return ret; +} + +int cw1200_data_read(struct cw1200_common *priv, void *buf, size_t buf_len) +{ + int ret, retry = 1; + BUG_ON(!priv->sbus_ops); + priv->sbus_ops->lock(priv->sbus_priv); + { + int buf_id_rx = priv->buf_id_rx; + while (retry <= MAX_RETRY) { + ret = __cw1200_reg_read(priv, + ST90TDS_IN_OUT_QUEUE_REG_ID, buf, + buf_len, buf_id_rx + 1); + if (!ret) { + buf_id_rx = (buf_id_rx + 1) & 3; + priv->buf_id_rx = buf_id_rx; + break; + } else { + retry++; + mdelay(1); + pr_err("%s,error :[%d]\n", + __func__, ret); + } + } + } + priv->sbus_ops->unlock(priv->sbus_priv); + return ret; +} + +int cw1200_data_write(struct cw1200_common *priv, const void *buf, + size_t buf_len) +{ + int ret, retry = 1; + BUG_ON(!priv->sbus_ops); + priv->sbus_ops->lock(priv->sbus_priv); + { + int buf_id_tx = priv->buf_id_tx; + while (retry <= MAX_RETRY) { + ret = __cw1200_reg_write(priv, + ST90TDS_IN_OUT_QUEUE_REG_ID, buf, + buf_len, buf_id_tx); + if (!ret) { + buf_id_tx = (buf_id_tx + 1) & 31; + priv->buf_id_tx = buf_id_tx; + break; + } else { + retry++; + mdelay(1); + pr_err("%s,error :[%d]\n", + __func__, ret); + } + } + } + priv->sbus_ops->unlock(priv->sbus_priv); + return ret; +} + +int cw1200_indirect_read(struct cw1200_common *priv, u32 addr, void *buf, + size_t buf_len, u32 prefetch, u16 port_addr) +{ + u32 val32 = 0; + int i, ret; + + if ((buf_len / 2) >= 0x1000) { + pr_err("%s: Can't read more than 0xfff words.\n", + __func__); + WARN_ON(1); + return -EINVAL; + goto out; + } + + priv->sbus_ops->lock(priv->sbus_priv); + /* Write address */ + ret = __cw1200_reg_write_32(priv, ST90TDS_SRAM_BASE_ADDR_REG_ID, addr); + if (ret < 0) { + pr_err("%s: Can't write address register.\n", + __func__); + goto out; + } + + /* Read CONFIG Register Value - We will read 32 bits */ + ret = __cw1200_reg_read_32(priv, ST90TDS_CONFIG_REG_ID, &val32); + if (ret < 0) { + pr_err("%s: Can't read config register.\n", + __func__); + goto out; + } + + /* Set PREFETCH bit */ + ret = __cw1200_reg_write_32(priv, ST90TDS_CONFIG_REG_ID, + val32 | prefetch); + if (ret < 0) { + pr_err("%s: Can't write prefetch bit.\n", + __func__); + goto out; + } + + /* Check for PRE-FETCH bit to be cleared */ + for (i = 0; i < 20; i++) { + ret = __cw1200_reg_read_32(priv, ST90TDS_CONFIG_REG_ID, &val32); + if (ret < 0) { + pr_err("%s: Can't check prefetch bit.\n", + __func__); + goto out; + } + if (!(val32 & prefetch)) + break; + + mdelay(i); + } + + if (val32 & prefetch) { + pr_err("%s: Prefetch bit is not cleared.\n", + __func__); + goto out; + } + + /* Read data port */ + ret = __cw1200_reg_read(priv, port_addr, buf, buf_len, 0); + if (ret < 0) { + pr_err("%s: Can't read data port.\n", + __func__); + goto out; + } + +out: + priv->sbus_ops->unlock(priv->sbus_priv); + return ret; +} + +int cw1200_apb_write(struct cw1200_common *priv, u32 addr, const void *buf, + size_t buf_len) +{ + int ret; + + if ((buf_len / 2) >= 0x1000) { + pr_err("%s: Can't wrire more than 0xfff words.\n", + __func__); + WARN_ON(1); + return -EINVAL; + } + + priv->sbus_ops->lock(priv->sbus_priv); + + /* Write address */ + ret = __cw1200_reg_write_32(priv, ST90TDS_SRAM_BASE_ADDR_REG_ID, addr); + if (ret < 0) { + pr_err("%s: Can't write address register.\n", + __func__); + goto out; + } + + /* Write data port */ + ret = __cw1200_reg_write(priv, ST90TDS_SRAM_DPORT_REG_ID, + buf, buf_len, 0); + if (ret < 0) { + pr_err("%s: Can't write data port.\n", + __func__); + goto out; + } + +out: + priv->sbus_ops->unlock(priv->sbus_priv); + return ret; +} + +int __cw1200_irq_enable(struct cw1200_common *priv, int enable) +{ + u32 val32; + u16 val16; + int ret; + + if (HIF_8601_SILICON == priv->hw_type) { + /* If device is CW1200 the IRQ enable/disable bits + * are in CONFIG register */ + ret = __cw1200_reg_read_32(priv, ST90TDS_CONFIG_REG_ID, &val32); + if (ret < 0) { + pr_err("%s: enable_irq: can't read config register.\n", __func__); + return ret; + } + if (enable) { + val32 |= ST90TDS_CONF_IRQ_RDY_ENABLE; + } else { + val32 &= ~ST90TDS_CONF_IRQ_RDY_ENABLE; + } + ret = __cw1200_reg_write_32(priv, ST90TDS_CONFIG_REG_ID, val32); + if (ret < 0) { + pr_err("%s: enable_irq: can't write config register.\n", __func__); + return ret; + } + } else { + /* If device is STLC9000 the IRQ enable/disable bits + * are in CONTROL register */ + /* Enable device interrupts - Both DATA_RDY and WLAN_RDY */ + ret = __cw1200_reg_read_16(priv, ST90TDS_CONFIG_REG_ID, &val16); + if (ret < 0) { + pr_err("%s: enable_irq: can't read control register.\n", __func__); + return ret; + } + if (enable) { + val16 |= ST90TDS_CONT_IRQ_RDY_ENABLE; + } else { + val16 &= ~ST90TDS_CONT_IRQ_RDY_ENABLE; + } + ret = __cw1200_reg_write_16(priv, ST90TDS_CONFIG_REG_ID, val16); + if (ret < 0) { + pr_err("%s: enable_irq: can't write control register.\n", __func__); + return ret; + } + } + return 0; +} +EXPORT_SYMBOL_GPL(__cw1200_irq_enable); diff --git a/drivers/staging/cw1200/hwio.h b/drivers/staging/cw1200/hwio.h new file mode 100644 index 0000000..2823f93 --- /dev/null +++ b/drivers/staging/cw1200/hwio.h @@ -0,0 +1,250 @@ +/* + * Low-level API for mac80211 ST-Ericsson CW1200 drivers + * + * Copyright (c) 2010, ST-Ericsson + * Author: Dmitry Tarnyagin + * + * Based on: + * ST-Ericsson UMAC CW1200 driver which is + * Copyright (c) 2010, ST-Ericsson + * Author: Ajitpal Singh + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef CW1200_HWIO_H_INCLUDED +#define CW1200_HWIO_H_INCLUDED + +/* extern */ struct cw1200_common; + +/* Hardware Type Definitions */ +#define HIF_8601_VERSATILE (0) +#define HIF_8601_SILICON (1) +#define HIF_9000_SILICON_VERSTAILE (2) + +#define CW1200_CUT_11_ID_STR (0x302E3830) +#define CW1200_CUT_22_ID_STR1 (0x302e3132) +#define CW1200_CUT_22_ID_STR2 (0x32302e30) +#define CW1200_CUT_22_ID_STR3 (0x3335) +#define CW1200_CUT_ID_ADDR (0xFFF17F90) +#define CW1200_CUT2_ID_ADDR (0xFFF1FF90) + +/* Download control area */ +/* boot loader start address in SRAM */ +#define DOWNLOAD_BOOT_LOADER_OFFSET (0x00000000) +/* 32K, 0x4000 to 0xDFFF */ +#define DOWNLOAD_FIFO_OFFSET (0x00004000) +/* 32K */ +#define DOWNLOAD_FIFO_SIZE (0x00008000) +/* 128 bytes, 0xFF80 to 0xFFFF */ +#define DOWNLOAD_CTRL_OFFSET (0x0000FF80) +#define DOWNLOAD_CTRL_DATA_DWORDS (32-6) + +struct download_cntl_t { + /* size of whole firmware file (including Cheksum), host init */ + u32 ImageSize; + /* downloading flags */ + u32 Flags; + /* No. of bytes put into the download, init & updated by host */ + u32 Put; + /* last traced program counter, last ARM reg_pc */ + u32 TracePc; + /* No. of bytes read from the download, host init, device updates */ + u32 Get; + /* r0, boot losader status, host init to pending, device updates */ + u32 Status; + /* Extra debug info, r1 to r14 if status=r0=DOWNLOAD_EXCEPTION */ + u32 DebugData[DOWNLOAD_CTRL_DATA_DWORDS]; +}; + +#define DOWNLOAD_IMAGE_SIZE_REG \ + (DOWNLOAD_CTRL_OFFSET + offsetof(struct download_cntl_t, ImageSize)) +#define DOWNLOAD_FLAGS_REG \ + (DOWNLOAD_CTRL_OFFSET + offsetof(struct download_cntl_t, Flags)) +#define DOWNLOAD_PUT_REG \ + (DOWNLOAD_CTRL_OFFSET + offsetof(struct download_cntl_t, Put)) +#define DOWNLOAD_TRACE_PC_REG \ + (DOWNLOAD_CTRL_OFFSET + offsetof(struct download_cntl_t, TracePc)) +#define DOWNLOAD_GET_REG \ + (DOWNLOAD_CTRL_OFFSET + offsetof(struct download_cntl_t, Get)) +#define DOWNLOAD_STATUS_REG \ + (DOWNLOAD_CTRL_OFFSET + offsetof(struct download_cntl_t, Status)) +#define DOWNLOAD_DEBUG_DATA_REG \ + (DOWNLOAD_CTRL_OFFSET + offsetof(struct download_cntl_t, DebugData)) +#define DOWNLOAD_DEBUG_DATA_LEN (108) + +#define DOWNLOAD_BLOCK_SIZE (1024) + +/* For boot loader detection */ +#define DOWNLOAD_ARE_YOU_HERE (0x87654321) +#define DOWNLOAD_I_AM_HERE (0x12345678) + +/* Download error code */ +#define DOWNLOAD_PENDING (0xFFFFFFFF) +#define DOWNLOAD_SUCCESS (0) +#define DOWNLOAD_EXCEPTION (1) +#define DOWNLOAD_ERR_MEM_1 (2) +#define DOWNLOAD_ERR_MEM_2 (3) +#define DOWNLOAD_ERR_SOFTWARE (4) +#define DOWNLOAD_ERR_FILE_SIZE (5) +#define DOWNLOAD_ERR_CHECKSUM (6) +#define DOWNLOAD_ERR_OVERFLOW (7) +#define DOWNLOAD_ERR_IMAGE (8) +#define DOWNLOAD_ERR_HOST (9) +#define DOWNLOAD_ERR_ABORT (10) + + +#define SYS_BASE_ADDR_SILICON (0) +#define PAC_BASE_ADDRESS_SILICON (SYS_BASE_ADDR_SILICON + 0x09000000) +#define PAC_SHARED_MEMORY_SILICON (PAC_BASE_ADDRESS_SILICON) + +#define CW12000_APB(addr) (PAC_SHARED_MEMORY_SILICON + (addr)) + +/* *************************************************************** +*Device register definitions +*************************************************************** */ +/* WBF - SPI Register Addresses */ +#define ST90TDS_ADDR_ID_BASE (0x0000) +/* 16/32 bits */ +#define ST90TDS_CONFIG_REG_ID (0x0000) +/* 16/32 bits */ +#define ST90TDS_CONTROL_REG_ID (0x0001) +/* 16 bits, Q mode W/R */ +#define ST90TDS_IN_OUT_QUEUE_REG_ID (0x0002) +/* 32 bits, AHB bus R/W */ +#define ST90TDS_AHB_DPORT_REG_ID (0x0003) +/* 16/32 bits */ +#define ST90TDS_SRAM_BASE_ADDR_REG_ID (0x0004) +/* 32 bits, APB bus R/W */ +#define ST90TDS_SRAM_DPORT_REG_ID (0x0005) +/* 32 bits, t_settle/general */ +#define ST90TDS_TSET_GEN_R_W_REG_ID (0x0006) +/* 16 bits, Q mode read, no length */ +#define ST90TDS_FRAME_OUT_REG_ID (0x0007) +#define ST90TDS_ADDR_ID_MAX (ST90TDS_FRAME_OUT_REG_ID) + +/* WBF - Control register bit set */ +/* next o/p length, bit 11 to 0 */ +#define ST90TDS_CONT_NEXT_LEN_MASK (0x0FFF) +#define ST90TDS_CONT_WUP_BIT (BIT(12)) +#define ST90TDS_CONT_RDY_BIT (BIT(13)) +#define ST90TDS_CONT_IRQ_ENABLE (BIT(14)) +#define ST90TDS_CONT_RDY_ENABLE (BIT(15)) +#define ST90TDS_CONT_IRQ_RDY_ENABLE (BIT(14)|BIT(15)) + +/* SPI Config register bit set */ +#define ST90TDS_CONFIG_FRAME_BIT (BIT(2)) +#define ST90TDS_CONFIG_WORD_MODE_BITS (BIT(3)|BIT(4)) +#define ST90TDS_CONFIG_WORD_MODE_1 (BIT(3)) +#define ST90TDS_CONFIG_WORD_MODE_2 (BIT(4)) +#define ST90TDS_CONFIG_ERROR_0_BIT (BIT(5)) +#define ST90TDS_CONFIG_ERROR_1_BIT (BIT(6)) +#define ST90TDS_CONFIG_ERROR_2_BIT (BIT(7)) +/* TBD: Sure??? */ +#define ST90TDS_CONFIG_CSN_FRAME_BIT (BIT(7)) +#define ST90TDS_CONFIG_ERROR_3_BIT (BIT(8)) +#define ST90TDS_CONFIG_ERROR_4_BIT (BIT(9)) +/* QueueM */ +#define ST90TDS_CONFIG_ACCESS_MODE_BIT (BIT(10)) +/* AHB bus */ +#define ST90TDS_CONFIG_AHB_PFETCH_BIT (BIT(11)) +#define ST90TDS_CONFIG_CPU_CLK_DIS_BIT (BIT(12)) +/* APB bus */ +#define ST90TDS_CONFIG_PFETCH_BIT (BIT(13)) +/* cpu reset */ +#define ST90TDS_CONFIG_CPU_RESET_BIT (BIT(14)) +#define ST90TDS_CONFIG_CLEAR_INT_BIT (BIT(15)) + +/* For CW1200 the IRQ Enable and Ready Bits are in CONFIG register */ +#define ST90TDS_CONF_IRQ_ENABLE (BIT(16)) +#define ST90TDS_CONF_RDY_ENABLE (BIT(17)) +#define ST90TDS_CONF_IRQ_RDY_ENABLE (BIT(16)|BIT(17)) + +int cw1200_data_read(struct cw1200_common *priv, + void *buf, size_t buf_len); +int cw1200_data_write(struct cw1200_common *priv, + const void *buf, size_t buf_len); + +int cw1200_reg_read(struct cw1200_common *priv, u16 addr, + void *buf, size_t buf_len); +int cw1200_reg_write(struct cw1200_common *priv, u16 addr, + const void *buf, size_t buf_len); + +static inline int cw1200_reg_read_16(struct cw1200_common *priv, + u16 addr, u16 *val) +{ + u32 tmp; + int i; + i = cw1200_reg_read(priv, addr, &tmp, sizeof(tmp)); + tmp = le32_to_cpu(tmp); + *val = tmp & 0xffff; + return i; +} + +static inline int cw1200_reg_write_16(struct cw1200_common *priv, + u16 addr, u16 val) +{ + u32 tmp = val; + tmp = cpu_to_le32(tmp); + return cw1200_reg_write(priv, addr, &tmp, sizeof(tmp)); +} + +static inline int cw1200_reg_read_32(struct cw1200_common *priv, + u16 addr, u32 *val) +{ + int i = cw1200_reg_read(priv, addr, val, sizeof(*val)); + *val = le32_to_cpu(*val); + return i; +} + +static inline int cw1200_reg_write_32(struct cw1200_common *priv, + u16 addr, u32 val) +{ + val = cpu_to_le32(val); + return cw1200_reg_write(priv, addr, &val, sizeof(val)); +} + +int cw1200_indirect_read(struct cw1200_common *priv, u32 addr, void *buf, + size_t buf_len, u32 prefetch, u16 port_addr); +int cw1200_apb_write(struct cw1200_common *priv, u32 addr, const void *buf, + size_t buf_len); + +static inline int cw1200_apb_read(struct cw1200_common *priv, u32 addr, + void *buf, size_t buf_len) +{ + return cw1200_indirect_read(priv, addr, buf, buf_len, + ST90TDS_CONFIG_PFETCH_BIT, ST90TDS_SRAM_DPORT_REG_ID); +} + +static inline int cw1200_ahb_read(struct cw1200_common *priv, u32 addr, + void *buf, size_t buf_len) +{ + return cw1200_indirect_read(priv, addr, buf, buf_len, + ST90TDS_CONFIG_AHB_PFETCH_BIT, ST90TDS_AHB_DPORT_REG_ID); +} + +static inline int cw1200_apb_read_32(struct cw1200_common *priv, + u32 addr, u32 *val) +{ + int i = cw1200_apb_read(priv, addr, val, sizeof(val)); + *val = le32_to_cpu(*val); + return i; +} + +static inline int cw1200_apb_write_32(struct cw1200_common *priv, + u32 addr, u32 val) +{ + val = cpu_to_le32(val); + return cw1200_apb_write(priv, addr, &val, sizeof(val)); +} +static inline int cw1200_ahb_read_32(struct cw1200_common *priv, + u32 addr, u32 *val) +{ + int i = cw1200_ahb_read(priv, addr, val, sizeof(val)); + *val = le32_to_cpu(*val); + return i; +} + +#endif /* CW1200_HWIO_H_INCLUDED */ -- 1.7.11.7