On 10/05/2017 08:07 AM, chin.liang.see@intel.com wrote:
From: Chin Liang See chin.liang.see@intel.com
Add mailbox support for Stratix SoC
Signed-off-by: Ley Foon Tan ley.foon.tan@intel.com Signed-off-by: Chin Liang See chin.liang.see@intel.com
arch/arm/mach-socfpga/Makefile | 1 + arch/arm/mach-socfpga/include/mach/mailbox_s10.h | 108 ++++++++++ arch/arm/mach-socfpga/mailbox_s10.c | 238 +++++++++++++++++++++++ 3 files changed, 347 insertions(+) create mode 100644 arch/arm/mach-socfpga/include/mach/mailbox_s10.h create mode 100644 arch/arm/mach-socfpga/mailbox_s10.c
diff --git a/arch/arm/mach-socfpga/Makefile b/arch/arm/mach-socfpga/Makefile index b253914..43e18d2 100644 --- a/arch/arm/mach-socfpga/Makefile +++ b/arch/arm/mach-socfpga/Makefile @@ -32,6 +32,7 @@ endif
ifdef CONFIG_TARGET_SOCFPGA_STRATIX10 obj-y += clock_manager_s10.o +obj-y += mailbox_s10.o obj-y += misc_s10.o obj-y += reset_manager_s10.o obj-y += system_manager_s10.o diff --git a/arch/arm/mach-socfpga/include/mach/mailbox_s10.h b/arch/arm/mach-socfpga/include/mach/mailbox_s10.h new file mode 100644 index 0000000..b9bddf6 --- /dev/null +++ b/arch/arm/mach-socfpga/include/mach/mailbox_s10.h @@ -0,0 +1,108 @@ +/*
- Copyright (C) 2017 Intel Corporation <www.intel.com>
- SPDX-License-Identifier: GPL-2.0
- */
+#ifndef _MAILBOX_S10_H_ +#define _MAILBOX_S10_H_
+/* user define Uboot ID */ +#define MBOX_CLIENT_ID_UBOOT 0xB +#define MBOX_ID_UBOOT 0x1
+#define MBOX_MAX_CMD_INDEX 2047 +#define MBOX_CMD_BUFFER_SIZE 32 +#define MBOX_RESP_BUFFER_SIZE 16
+#define MBOX_HDR_CMD_LSB 0 +#define MBOX_HDR_CMD_MSK (BIT(11) - 1) +#define MBOX_HDR_I_LSB 11 +#define MBOX_HDR_I_MSK BIT(11) +#define MBOX_HDR_LEN_LSB 12 +#define MBOX_HDR_LEN_MSK 0x007FF000 +#define MBOX_HDR_ID_LSB 24 +#define MBOX_HDR_ID_MSK 0x0F000000 +#define MBOX_HDR_CLIENT_LSB 28 +#define MBOX_HDR_CLIENT_MSK 0xF0000000
+/* Interrupt flags */ +#define MBOX_FLAGS_INT_COE BIT(0) /* COUT update interrupt enable */ +#define MBOX_FLAGS_INT_RIE BIT(1) /* RIN update interrupt enable */ +#define MBOX_FLAGS_INT_UAE BIT(8) /* Urgent ACK interrupt enable */ +#define MBOX_ALL_INTRS (MBOX_FLAGS_INT_COE | \
MBOX_FLAGS_INT_RIE | \MBOX_FLAGS_INT_UAE)+/* Status */ +#define MBOX_STATUS_UA_MSK BIT(8)
+#define MBOX_CMD_HEADER(client, id, len, cmd) \
- (((cmd) << MBOX_HDR_CMD_LSB) & MBOX_HDR_CMD_MSK) | \
- (((len) << MBOX_HDR_LEN_LSB) & MBOX_HDR_LEN_MSK) | \
- (((id) << MBOX_HDR_ID_LSB) & MBOX_HDR_ID_MSK) | \
- (((client) << MBOX_HDR_CLIENT_LSB) & MBOX_HDR_CLIENT_MSK)
+#define MBOX_RESP_ERR_GET(resp) \
- (((resp) & MBOX_HDR_CMD_MSK) >> MBOX_HDR_CMD_LSB)
+#define MBOX_RESP_LEN_GET(resp) \
- (((resp) & MBOX_HDR_LEN_MSK) >> MBOX_HDR_LEN_LSB)
+#define MBOX_RESP_ID_GET(resp) \
- (((resp) & MBOX_HDR_ID_MSK) >> MBOX_HDR_ID_LSB)
+#define MBOX_RESP_CLIENT_GET(resp) \
- (((resp) & MBOX_HDR_CLIENT_MSK) >> MBOX_HDR_CLIENT_LSB)
+/* Response error list */ +typedef enum {
- /* CMD completed succesfully, but check resp ARGS for any errors */
- MBOX_RESP_STATOK = 0,
- /* CMD is incorrectly formatted in some way */
- MBOX_RESP_INVALID_COMMAND = 1,
- /* BootROM Command code not undesrtood */
- MBOX_RESP_UNKNOWN_BR = 2,
- /* CMD code not recognized by firmware */
- MBOX_RESP_UNKNOWN = 3,
- /* Indicates that the device is not configured */
- MBOX_RESP_NOT_CONFIGURED = 256,
- /* Indicates that the device is busy */
- MBOX_RESP_DEVICE_BUSY = 0x1FF,
- /* Indicates that there is no valid response available */
- MBOX_RESP_NO_VALID_RESP_AVAILABLE = 0x2FF,
- /* General Error */
- MBOX_RESP_ERROR = 0x3FF,
+} ALT_SDM_MBOX_RESP_CODE;
+/* Mailbox command list */ +#define MBOX_RESTART 2 +#define MBOX_QSPI_OPEN 50 +#define MBOX_QSPI_CLOSE 51 +#define MBOX_QSPI_DIRECT 59
+struct socfpga_mailbox {
- u32 cin; /* command valid offset */
- u32 rout; /* response output offset */
- u32 urg; /* urgent command */
- u32 flags; /* interrupt enables */
- u32 pad_0x10_0x1f[4]; /* 0x10 - 0x1F reserved */
- u32 cout; /* command free offset */
- u32 rin; /* respond valid offset */
- u32 pad_0x28; /* 0x28 reserved */
- u32 status; /* mailbox status */
- u32 pad_0x30_0x3f[4]; /* 0x30 - 0x3F reserved */
- u32 cmd_buf[MBOX_CMD_BUFFER_SIZE]; /* 0x40 - 0xBC circular command
buffer to SDM */- u32 resp_buf[MBOX_RESP_BUFFER_SIZE]; /* 0xC0 - 0xFF circular
response buffer */+};
+/* Use define other than put into struct socfpga_mailbox to save spaces */ +#define MBOX_DOORBELL_TO_SDM_REG (SOCFPGA_MAILBOX_ADDRESS + 0x400) +#define MBOX_DOORBELL_FROM_SDM_REG (SOCFPGA_MAILBOX_ADDRESS + 0x480)
+int mbox_init(void);
+#ifdef CONFIG_CADENCE_QSPI +int mbox_qspi_close(void); +int mbox_qspi_open(void); +#endif
+#endif /* _MAILBOX_S10_H_ */ diff --git a/arch/arm/mach-socfpga/mailbox_s10.c b/arch/arm/mach-socfpga/mailbox_s10.c new file mode 100644 index 0000000..de836b1 --- /dev/null +++ b/arch/arm/mach-socfpga/mailbox_s10.c @@ -0,0 +1,238 @@ +/*
- Copyright (C) 2017 Intel Corporation <www.intel.com>
- SPDX-License-Identifier: GPL-2.0
- */
+#include <common.h> +#include <wait_bit.h> +#include <asm/io.h> +#include <asm/arch/mailbox_s10.h>
+DECLARE_GLOBAL_DATA_PTR;
+static const struct socfpga_mailbox *mbox_base =
(void *)SOCFPGA_MAILBOX_ADDRESS;+#define MBOX_POLL_RESP_TIMEOUT 50 /* ms */
+static int mbox_polling_resp(u32 rout) +{
- u32 rin;
- unsigned long start = get_timer(0);
- while (1) {
rin = readl(&mbox_base->rin);if (rout != rin)return 0;if (get_timer(start) > MBOX_POLL_RESP_TIMEOUT)break;udelay(1);- }
- debug("mailbox: polling response timeout\n");
- return -ETIMEDOUT;
+}
+/* Check for available slot and write to circular buffer.
- It also update command valid offset (cin) register.
- */
+static int mbox_fill_cmd_circular_buff(u32 header, u32 len, u32 *arg) +{
- u32 cmd_free_offset;
- u32 i;
- /* checking available command free slot */
- cmd_free_offset = readl(&mbox_base->cout);
- if (cmd_free_offset >= MBOX_CMD_BUFFER_SIZE) {
error("ERROR: Not enough space, cout %d\n", cmd_free_offset);
I'm getting these build error:
arch/arm/mach-socfpga/mailbox_s10.c: In function ‘mbox_fill_cmd_circular_buff’: arch/arm/mach-socfpga/mailbox_s10.c:50:3: warning: implicit declaration of function ‘error’ [-Wimplicit-function-declaration] error("ERROR: Not enough space, cout %d\n", cmd_free_offset)
arch/arm/mach-socfpga/built-in.o: In function `mbox_send_cmd': /home/dinguyen/linux_dev/u-boot/arch/arm/mach-socfpga/mailbox_s10.c:86: undefined reference to `error'
Please at least do a compile test on your patches in the future.
Dinh