From e8f6d6996ea795c27cef02cb996041eccfb6020e Mon Sep 17 00:00:00 2001 From: "shanlong.li" Date: Thu, 13 Jan 2022 18:32:53 +0800 Subject: [PATCH] 1.add mailbox driver; 2.add mailbox test driver. --- .../boot/dts/starfive/starfive_jh7110.dts | 17 +- arch/riscv/configs/starfive_jh7110_defconfig | 3 + drivers/mailbox/Kconfig | 13 + drivers/mailbox/Makefile | 4 + drivers/mailbox/starfive_mailbox-test.c | 412 ++++++++++++++++++ drivers/mailbox/starfive_mailbox.c | 338 ++++++++++++++ 6 files changed, 786 insertions(+), 1 deletion(-) create mode 100644 drivers/mailbox/starfive_mailbox-test.c create mode 100644 drivers/mailbox/starfive_mailbox.c diff --git a/arch/riscv/boot/dts/starfive/starfive_jh7110.dts b/arch/riscv/boot/dts/starfive/starfive_jh7110.dts index edab49652298..66e63a394dd9 100755 --- a/arch/riscv/boot/dts/starfive/starfive_jh7110.dts +++ b/arch/riscv/boot/dts/starfive/starfive_jh7110.dts @@ -862,7 +862,22 @@ <0x0 0x0 0x0 0x3 &plic 0x3>, <0x0 0x0 0x0 0x4 &plic 0x4>; }; + + mailbox_contrl0: mailbox@0 { + compatible = "starfive,mail_box"; + reg = <0x0 0x13060000 0x0 0x0001000>; + interrupt-parent = <&plic>; + interrupts = <26 27>; + #mbox-cells = <2>; + }; + + mailbox_client@0 { + compatible = "starfive,mailbox-test"; + interrupt-parent = <&plic>; + mbox-names = "rx", "tx"; + mboxes = <&mailbox_contrl0 0 1>,<&mailbox_contrl0 1 0>; + }; }; }; -#include "starfive_jh7110_audio.dtsi" \ No newline at end of file +#include "starfive_jh7110_audio.dtsi" diff --git a/arch/riscv/configs/starfive_jh7110_defconfig b/arch/riscv/configs/starfive_jh7110_defconfig index 73bf65d4c882..5888520da7fa 100644 --- a/arch/riscv/configs/starfive_jh7110_defconfig +++ b/arch/riscv/configs/starfive_jh7110_defconfig @@ -193,6 +193,9 @@ CONFIG_DMATEST=m # CONFIG_VHOST_MENU is not set CONFIG_GOLDFISH=y CONFIG_STARFIVE_TIMER=y +CONFIG_MAILBOX=y +CONFIG_STARFIVE_MBOX=m +CONFIG_STARFIVE_MBOX_TEST=m # CONFIG_IOMMU_SUPPORT is not set CONFIG_RPMSG_CHAR=y CONFIG_RPMSG_VIRTIO=y diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index c9fc06c7e685..c78d02124e8e 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -273,4 +273,17 @@ config QCOM_IPCC acts as an interrupt controller for receiving interrupts from clients. Say Y here if you want to build this driver. +config STARFIVE_MBOX + tristate "Platform Starfive Mailbox" + depends on OF + help + Say Y here if you want to build a platform specific variant RISCV + controller driver. + +config STARFIVE_MBOX_TEST + tristate "Starfive Mailbox Test Client" + depends on OF + depends on HAS_IOMEM + help + Test client to help with testing new Controller driver implementations. endif diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile index c2089f04887e..14452f5d8272 100644 --- a/drivers/mailbox/Makefile +++ b/drivers/mailbox/Makefile @@ -58,3 +58,7 @@ obj-$(CONFIG_SUN6I_MSGBOX) += sun6i-msgbox.o obj-$(CONFIG_SPRD_MBOX) += sprd-mailbox.o obj-$(CONFIG_QCOM_IPCC) += qcom-ipcc.o + +obj-$(CONFIG_STARFIVE_MBOX) += starfive_mailbox.o + +obj-$(CONFIG_STARFIVE_MBOX_TEST) += starfive_mailbox-test.o diff --git a/drivers/mailbox/starfive_mailbox-test.c b/drivers/mailbox/starfive_mailbox-test.c new file mode 100644 index 000000000000..765eb981c790 --- /dev/null +++ b/drivers/mailbox/starfive_mailbox-test.c @@ -0,0 +1,412 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2015 ST Microelectronics + * + * Author: Lee Jones + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define MBOX_MAX_SIG_LEN 8 +#define MBOX_MAX_MSG_LEN 16 +#define MBOX_BYTES_PER_LINE 16 +#define MBOX_HEXDUMP_LINE_LEN ((MBOX_BYTES_PER_LINE * 4) + 2) +#define MBOX_HEXDUMP_MAX_LEN (MBOX_HEXDUMP_LINE_LEN * (MBOX_MAX_MSG_LEN / MBOX_BYTES_PER_LINE)) + +static bool mbox_data_ready; + +struct mbox_test_device { + struct device *dev; + void __iomem *tx_mmio; + void __iomem *rx_mmio; + struct mbox_chan *tx_channel; + struct mbox_chan *rx_channel; + char *rx_buffer; + char *signal; + char *message; + spinlock_t lock; + wait_queue_head_t waitq; + struct fasync_struct *async_queue; + struct dentry *root_debugfs_dir; +}; + +static ssize_t mbox_test_signal_write(struct file *filp, + const char __user *userbuf, + size_t count, loff_t *ppos){ + struct mbox_test_device *tdev = filp->private_data; + + if (!tdev->tx_channel) { + dev_err(tdev->dev, "Channel cannot do Tx\n"); + return -EINVAL; + } + + if (count > MBOX_MAX_SIG_LEN) { + dev_err(tdev->dev, + "Signal length %zd greater than max allowed %d\n", + count, MBOX_MAX_SIG_LEN); + return -EINVAL; + } + + /* Only allocate memory if we need to */ + if (!tdev->signal) { + tdev->signal = kzalloc(MBOX_MAX_SIG_LEN, GFP_KERNEL); + if (!tdev->signal) + return -ENOMEM; + } + + if (copy_from_user(tdev->signal, userbuf, count)) { + kfree(tdev->signal); + tdev->signal = NULL; + return -EFAULT; + } + + return count; +} + +static const struct file_operations mbox_test_signal_ops = { + .write = mbox_test_signal_write, + .open = simple_open, + .llseek = generic_file_llseek, +}; + +static int mbox_test_message_fasync(int fd, struct file *filp, int on){ + struct mbox_test_device *tdev = filp->private_data; + + return fasync_helper(fd, filp, on, &tdev->async_queue); +} + +static ssize_t mbox_test_message_write(struct file *filp, + const char __user *userbuf, + size_t count, loff_t *ppos){ + struct mbox_test_device *tdev = filp->private_data; + void *data; + int ret; + + if (!tdev->tx_channel) { + dev_err(tdev->dev, "Channel cannot do Tx\n"); + return -EINVAL; + } + + if (count > MBOX_MAX_MSG_LEN) { + dev_err(tdev->dev, + "Message length %zd greater than max allowed %d\n", + count, MBOX_MAX_MSG_LEN); + return -EINVAL; + } + + tdev->message = kzalloc(MBOX_MAX_MSG_LEN, GFP_KERNEL); + if (!tdev->message) + return -ENOMEM; + + ret = copy_from_user(tdev->message, userbuf, count); + if (ret) { + ret = -EFAULT; + goto out; + } + + /* + * A separate signal is only of use if there is + * MMIO to subsequently pass the message through + */ + if (tdev->tx_mmio && tdev->signal) { + print_hex_dump_bytes("Client: Sending: Signal: ", DUMP_PREFIX_ADDRESS, + tdev->signal, MBOX_MAX_SIG_LEN); + + data = tdev->signal; + } else + data = tdev->message; + + print_hex_dump_bytes("Client: Sending: Message: ", DUMP_PREFIX_ADDRESS, + tdev->message, MBOX_MAX_MSG_LEN); + + ret = mbox_send_message(tdev->tx_channel, data); + mbox_chan_txdone(tdev->tx_channel,ret); + if (ret < 0) + dev_err(tdev->dev, "Failed to send message via mailbox\n"); + +out: + kfree(tdev->signal); + kfree(tdev->message); + tdev->signal = NULL; + + return ret < 0 ? ret : count; +} + +static bool mbox_test_message_data_ready(struct mbox_test_device *tdev){ + bool data_ready; + unsigned long flags; + + spin_lock_irqsave(&tdev->lock, flags); + data_ready = mbox_data_ready; + spin_unlock_irqrestore(&tdev->lock, flags); + + return data_ready; +} + +static ssize_t mbox_test_message_read(struct file *filp, char __user *userbuf, + size_t count, loff_t *ppos){ + struct mbox_test_device *tdev = filp->private_data; + unsigned long flags; + char *touser, *ptr; + int l = 0; + int ret; + + touser = kzalloc(MBOX_HEXDUMP_MAX_LEN + 1, GFP_KERNEL); + if (!touser) + return -ENOMEM; + + if (!tdev->rx_channel) { + ret = snprintf(touser, 20, "\n"); + ret = simple_read_from_buffer(userbuf, count, ppos, + touser, ret); + goto kfree_err; + } + + do { + if (mbox_test_message_data_ready(tdev)) + break; + + if (filp->f_flags & O_NONBLOCK) { + ret = -EAGAIN; + goto waitq_err; + } + + if (signal_pending(current)) { + ret = -ERESTARTSYS; + goto waitq_err; + } + schedule(); + + } while (1); + + spin_lock_irqsave(&tdev->lock, flags); + + ptr = tdev->rx_buffer; + + mbox_data_ready = false; + + spin_unlock_irqrestore(&tdev->lock, flags); + if (copy_to_user((void __user *)userbuf,ptr,4)) + ret = -EFAULT; + +waitq_err: + __set_current_state(TASK_RUNNING); +kfree_err: + kfree(touser); + return ret; +} + +static __poll_t +mbox_test_message_poll(struct file *filp, struct poll_table_struct *wait){ + struct mbox_test_device *tdev = filp->private_data; + + poll_wait(filp, &tdev->waitq, wait); + + if (mbox_test_message_data_ready(tdev)) + return EPOLLIN | EPOLLRDNORM; + return 0; +} + +static const struct file_operations mbox_test_message_ops = { + .write = mbox_test_message_write, + .read = mbox_test_message_read, + .fasync = mbox_test_message_fasync, + .poll = mbox_test_message_poll, + .open = simple_open, + .llseek = generic_file_llseek, +}; + +static int mbox_test_add_debugfs(struct platform_device *pdev, + struct mbox_test_device *tdev){ + if (!debugfs_initialized()) + return 0; + + tdev->root_debugfs_dir = debugfs_create_dir(dev_name(&pdev->dev), NULL); + if (!tdev->root_debugfs_dir) { + dev_err(&pdev->dev, "Failed to create Mailbox debugfs\n"); + return -EINVAL; + } + + debugfs_create_file("message", 0600, tdev->root_debugfs_dir, + tdev, &mbox_test_message_ops); + + debugfs_create_file("signal", 0200, tdev->root_debugfs_dir, + tdev, &mbox_test_signal_ops); + + return 0; +} + +static void mbox_test_receive_message(struct mbox_client *client, void *message){ + struct mbox_test_device *tdev = dev_get_drvdata(client->dev); + unsigned long flags; + + spin_lock_irqsave(&tdev->lock, flags); + if (tdev->rx_mmio) { + memcpy_fromio(tdev->rx_buffer, tdev->rx_mmio, MBOX_MAX_MSG_LEN); + print_hex_dump_bytes("Client: Received [MMIO]: ", DUMP_PREFIX_ADDRESS, + tdev->rx_buffer, MBOX_MAX_MSG_LEN); + } else if (message) { + print_hex_dump_bytes("Client: Received [API]: ", DUMP_PREFIX_ADDRESS, + message, MBOX_MAX_MSG_LEN); + memcpy(tdev->rx_buffer, message, MBOX_MAX_MSG_LEN); + } + mbox_data_ready = true; + spin_unlock_irqrestore(&tdev->lock, flags); +} + +static void mbox_test_prepare_message(struct mbox_client *client, void *message){ + struct mbox_test_device *tdev = dev_get_drvdata(client->dev); + + if (tdev->tx_mmio) { + if (tdev->signal) + memcpy_toio(tdev->tx_mmio, tdev->message, MBOX_MAX_MSG_LEN); + else + memcpy_toio(tdev->tx_mmio, message, MBOX_MAX_MSG_LEN); + } +} + +static void mbox_test_message_sent(struct mbox_client *client, + void *message, int r){ + if (r) + dev_warn(client->dev, + "Client: Message could not be sent: %d\n", r); + else + dev_info(client->dev, + "Client: Message sent\n"); +} + +static struct mbox_chan * +mbox_test_request_channel(struct platform_device *pdev, const char *name){ + struct mbox_client *client; + struct mbox_chan *channel; + + client = devm_kzalloc(&pdev->dev, sizeof(*client), GFP_KERNEL); + if (!client) + return ERR_PTR(-ENOMEM); + + client->dev = &pdev->dev; + client->rx_callback = mbox_test_receive_message; + client->tx_prepare = mbox_test_prepare_message; + client->tx_done = mbox_test_message_sent; + client->tx_block = false; + client->knows_txdone = false; + client->tx_tout = 500; + + channel = mbox_request_channel_byname(client, name); + if (IS_ERR(channel)) { + dev_warn(&pdev->dev, "Failed to request %s channel\n", name); + return NULL; + } + + return channel; +} + +static int mbox_test_probe(struct platform_device *pdev){ + struct mbox_test_device *tdev; + struct resource *res; + resource_size_t size; + int ret; + + tdev = devm_kzalloc(&pdev->dev, sizeof(*tdev), GFP_KERNEL); + if (!tdev) + return -ENOMEM; + + /* It's okay for MMIO to be NULL */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + tdev->tx_mmio = devm_ioremap_resource(&pdev->dev, res); + if (PTR_ERR(tdev->tx_mmio) == -EBUSY) { + /* if reserved area in SRAM, try just ioremap */ + size = resource_size(res); + tdev->tx_mmio = devm_ioremap(&pdev->dev, res->start, size); + } else if (IS_ERR(tdev->tx_mmio)) { + tdev->tx_mmio = NULL; + } + + /* If specified, second reg entry is Rx MMIO */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + tdev->rx_mmio = devm_ioremap_resource(&pdev->dev, res); + if (PTR_ERR(tdev->rx_mmio) == -EBUSY) { + size = resource_size(res); + tdev->rx_mmio = devm_ioremap(&pdev->dev, res->start, size); + } else if (IS_ERR(tdev->rx_mmio)) { + tdev->rx_mmio = tdev->tx_mmio; + } + + tdev->tx_channel = mbox_test_request_channel(pdev, "tx"); + tdev->rx_channel = mbox_test_request_channel(pdev, "rx"); + + if (!tdev->tx_channel && !tdev->rx_channel) + return -EPROBE_DEFER; + + /* If Rx is not specified but has Rx MMIO, then Rx = Tx */ + if (!tdev->rx_channel && (tdev->rx_mmio != tdev->tx_mmio)) + tdev->rx_channel = tdev->tx_channel; + + tdev->dev = &pdev->dev; + platform_set_drvdata(pdev, tdev); + + spin_lock_init(&tdev->lock); + + if (tdev->rx_channel) + { + tdev->rx_buffer = devm_kzalloc(&pdev->dev, + MBOX_MAX_MSG_LEN, GFP_KERNEL); + if (!tdev->rx_buffer) + return -ENOMEM; + } + + ret = mbox_test_add_debugfs(pdev, tdev); + if (ret) + return ret; + + dev_info(&pdev->dev, "Successfully registered\n"); + + return 0; +} + +static int mbox_test_remove(struct platform_device *pdev){ + struct mbox_test_device *tdev = platform_get_drvdata(pdev); + + debugfs_remove_recursive(tdev->root_debugfs_dir); + + if (tdev->tx_channel) + mbox_free_channel(tdev->tx_channel); + if (tdev->rx_channel) + mbox_free_channel(tdev->rx_channel); + + return 0; +} + +static const struct of_device_id mbox_test_match[] = { + { .compatible = "starfive,mailbox-test" }, + {}, +}; +MODULE_DEVICE_TABLE(of, mbox_test_match); + +static struct platform_driver mbox_test_driver = { + .driver = { + .name = "mailbox_test", + .of_match_table = mbox_test_match, + }, + .probe = mbox_test_probe, + .remove = mbox_test_remove, +}; +module_platform_driver(mbox_test_driver); + +MODULE_DESCRIPTION("mailbox test driver"); +MODULE_AUTHOR("StarFive Technology Co. Ltd."); +MODULE_LICENSE("GPL"); diff --git a/drivers/mailbox/starfive_mailbox.c b/drivers/mailbox/starfive_mailbox.c new file mode 100644 index 000000000000..e2884a114e98 --- /dev/null +++ b/drivers/mailbox/starfive_mailbox.c @@ -0,0 +1,338 @@ +/*********************************Copyright (c)********************************************* + ** + ** + ** + **-------------------------------file info------------------------------------------------- + ** Vrsions: V1.0 + ** Filename: starfive_mailbox.c + ** Creator: shanlong.li + ** Date: 2021/06/07 + ** Description: starfive mailbox for e24 + ** + **-------------------------------history---------------------------------------------- + ** Name: shanlong.li + ** Versions: V1.0 + ** Date: 2021/06/07 + ** Description: + ** + ** ---------------------------------------------------------------------------------------- + ******************************************************************************************/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "mailbox.h" + +#define MBOX_CHAN_MAX 4 + +#define MBOX_BASE(mbox, ch) ((mbox)->base + ((ch) * 0x10)) +#define MBOX_IRQ_REG 0x00 +#define MBOX_SET_REG 0x04 +#define MBOX_CLR_REG 0x08 +#define MBOX_CMD_REG 0x0c +#define MBC_PEND_SMRY 0x100 + +static int mbox_init = 1; +module_param(mbox_init, int, 0644); +MODULE_PARM_DESC(mbox_init, "mbox_init on command."); + +static void saif_clear_rst (void __iomem* addr,void __iomem* addr_status,uint32_t mask){ + uint32_t tmp; + tmp = readl(addr); + tmp &= ~mask; + writel(tmp,addr); + do{ + tmp = readl(addr_status); + }while((tmp&mask)!=mask); +} + +static void saif_set_reg(void __iomem* addr,uint32_t data,uint32_t shift,uint32_t mask){ + uint32_t tmp; + tmp = readl(addr); + tmp &= ~mask; + tmp |= (data<args[0]; + int core_id = sp->args[1]; + + if (ind >= mbox->num_chans || core_id >= MAILBOX_CORE_NUM) + return ERR_PTR(-EINVAL); + + struct starfive_mbox *sbox = to_starfive_mbox(mbox); + sbox->mchan[ind].core_id = core_id; + + return &mbox->chans[ind]; +} + +static irqreturn_t starfive_rx_irq_handler(int irq, void *p){ + struct mbox_chan *chan = p; + unsigned long ch = (unsigned long)chan->con_priv; + struct starfive_mbox *mbox = to_starfive_mbox(chan->mbox); + void __iomem *base = MBOX_BASE(mbox, ch); + u32 val; + + val = readl(base + MBOX_CMD_REG); + if (!val) + return IRQ_NONE; + + mbox_chan_received_data(chan, (void *)&val); + writel(val, base + MBOX_CLR_REG); + return IRQ_HANDLED; +} + +static int starfive_mbox_check_state(struct mbox_chan *chan){ + unsigned long ch = (unsigned long)chan->con_priv; + struct starfive_mbox *mbox = to_starfive_mbox(chan->mbox); + void __iomem *base = MBOX_BASE(mbox, ch); + long ret = 0; + + /* Mailbox is idle so directly bail out */ + if (readl(mbox->base + MBC_PEND_SMRY) & BIT(ch)) + return -EBUSY; + + /* Ensure channel is released */ +// writel(0x0, base + MBOX_IRQ_REG); +// writel(0x0, base + MBOX_CLR_REG); + + if(mbox->mchan[ch].dst_irq > 0){ + dev_dbg(mbox->dev, "%s: host IRQ = %d, ch:%d",__func__, mbox->mchan[ch].dst_irq,ch); + ret = devm_request_irq(mbox->dev, mbox->mchan[ch].dst_irq, starfive_rx_irq_handler, + IRQF_SHARED, irq_peer_name[ch].name, chan); + if (ret < 0) { + dev_err(mbox->dev, "request_irq %d failed\n", mbox->mchan[ch].dst_irq); + } + } + + return ret; +} + +static int starfive_mbox_startup(struct mbox_chan *chan){ + return starfive_mbox_check_state(chan); +} + +static void starfive_mbox_shutdown(struct mbox_chan *chan){ + struct starfive_mbox *mbox = to_starfive_mbox(chan->mbox); + unsigned long ch = (unsigned long)chan->con_priv; + void __iomem *base = MBOX_BASE(mbox, ch); + + writel(0x0, base + MBOX_IRQ_REG); + writel(0x0, base + MBOX_CLR_REG); + + if(mbox->mchan[ch].dst_irq > 0){ + devm_free_irq(mbox->dev,mbox->mchan[ch].dst_irq, chan); + } +} + +static int starfive_mbox_send_data(struct mbox_chan *chan, void *msg){ + unsigned long ch = (unsigned long)chan->con_priv; + struct starfive_mbox *mbox = to_starfive_mbox(chan->mbox); + struct starfive_chan_info *mchan = &mbox->mchan[ch]; + void __iomem *base = MBOX_BASE(mbox, ch); + u32 *buf = msg; + + /* Ensure channel is released */ + if (readl(mbox->base + MBC_PEND_SMRY) & BIT(ch)){ + pr_debug("%s:%d. busy\n",__func__,__LINE__); + return -EBUSY; + } + + /* Clear mask for destination interrupt */ + writel(BIT(mchan->core_id), base + MBOX_IRQ_REG); + + /* Fill message data */ + writel(*buf, base + MBOX_SET_REG); + return 0; +} + +static struct mbox_chan_ops starfive_mbox_ops = { + .startup = starfive_mbox_startup, + .send_data = starfive_mbox_send_data, + .shutdown = starfive_mbox_shutdown, +}; + +static const struct of_device_id starfive_mbox_of_match[] = { + { .compatible = "starfive,mail_box", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, starfive_mbox_of_match); +void __iomem *clk_apb_ctrl_addr; + +void starfive_mailbox_init(void){ + clk_apb_ctrl_addr = ioremap(0x13020000, 0x1000); + + pr_debug("%s:.\n",__func__); + _ENABLE_CLOCK_CLK_U0_MAILBOX_CLK_APB_(clk_apb_ctrl_addr); + _CLEAR_RESET_RSTGEN_RSTN_U0_MAILBOX_PRESETN_(clk_apb_ctrl_addr); +} + +static int starfive_mbox_probe(struct platform_device *pdev){ + struct device *dev = &pdev->dev; + struct starfive_mbox *mbox; + struct mbox_chan *chan; + struct resource *res; + unsigned long ch; + int err; + + mbox = devm_kzalloc(dev, sizeof(*mbox), GFP_KERNEL); + if (!mbox) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + mbox->base = devm_ioremap_resource(dev, res); + + if (IS_ERR(mbox->base)) + return PTR_ERR(mbox->base); + + if(mbox_init) + starfive_mailbox_init(); + + mbox->dev = dev; + mbox->controller.dev = dev; + mbox->controller.chans = mbox->chan; + mbox->controller.num_chans = MBOX_CHAN_MAX; + mbox->controller.ops = &starfive_mbox_ops; + mbox->controller.of_xlate = starfive_of_mbox_index_xlate; + mbox->controller.txdone_irq = true; + mbox->controller.txdone_poll = false; + + /* Initialize mailbox channel data */ + chan = mbox->chan; + for(ch = 0;ch < MBOX_CHAN_MAX;ch++){ + mbox->mchan[ch].dst_irq = 0; + mbox->mchan[ch].core_id = (mailbox_core_t)ch; + chan[ch].con_priv = (void *)ch; + } + mbox->mchan[MAILBOX_CORE_HIFI4].dst_irq = platform_get_irq(pdev, 0); + mbox->mchan[MAILBOX_CORE_E2].dst_irq = platform_get_irq(pdev, 1); + + err = mbox_controller_register(&mbox->controller); + if (err) { + dev_err(dev, "Failed to register mailbox %d\n", err); + return err; + } + + platform_set_drvdata(pdev, mbox); + dev_info(dev, "Mailbox enabled\n"); + return 0; +} + +static int starfive_mbox_remove(struct platform_device *pdev){ + struct starfive_mbox *mbox = platform_get_drvdata(pdev); + + mbox_controller_unregister(&mbox->controller); + if(clk_apb_ctrl_addr) + iounmap(clk_apb_ctrl_addr); + return 0; +} + +static struct platform_driver starfive_mbox_driver = { + .probe = starfive_mbox_probe, + .remove = starfive_mbox_remove, + .driver = { + .name = "mailbox", + .of_match_table = starfive_mbox_of_match, + }, +}; + +static int __init starfive_mbox_init(void){ + return platform_driver_register(&starfive_mbox_driver); +} +core_initcall(starfive_mbox_init); + +static void __exit starfive_mbox_exit(void){ + platform_driver_unregister(&starfive_mbox_driver); +} +module_exit(starfive_mbox_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("StarFive Mailbox Controller"); +MODULE_AUTHOR("StarFive Technology Co. Ltd."); -- 2.34.1