diff options
Diffstat (limited to 'fpga/ebaz4205/linux-4.19-pq/master/ocm')
| -rw-r--r-- | fpga/ebaz4205/linux-4.19-pq/master/ocm | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/fpga/ebaz4205/linux-4.19-pq/master/ocm b/fpga/ebaz4205/linux-4.19-pq/master/ocm new file mode 100644 index 0000000..74a770b --- /dev/null +++ b/fpga/ebaz4205/linux-4.19-pq/master/ocm @@ -0,0 +1,235 @@ +diff --git a/.config b/.config +index 220a2407..d8a853f6 100644 +--- a/.config ++++ b/.config +@@ -1620,6 +1620,7 @@ CONFIG_SRAM=y + CONFIG_SRAM_EXEC=y + CONFIG_VEXPRESS_SYSCFG=y + CONFIG_PCI_ENDPOINT_TEST=m ++CONFIG_MISC_OCM=y + # CONFIG_C2PORT is not set + + # +diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig +index 3726eacd..92095a24 100644 +--- a/drivers/misc/Kconfig ++++ b/drivers/misc/Kconfig +@@ -513,6 +513,9 @@ config MISC_RTSX + tristate + default MISC_RTSX_PCI || MISC_RTSX_USB + ++config MISC_OCM ++ tristate MISC_OCM ++ + source "drivers/misc/c2port/Kconfig" + source "drivers/misc/eeprom/Kconfig" + source "drivers/misc/cb710/Kconfig" +diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile +index af22bbc3..2470b1ae 100644 +--- a/drivers/misc/Makefile ++++ b/drivers/misc/Makefile +@@ -58,3 +58,4 @@ obj-$(CONFIG_ASPEED_LPC_SNOOP) += aspeed-lpc-snoop.o + obj-$(CONFIG_PCI_ENDPOINT_TEST) += pci_endpoint_test.o + obj-$(CONFIG_OCXL) += ocxl/ + obj-$(CONFIG_MISC_RTSX) += cardreader/ ++obj-$(CONFIG_MISC_OCM) += ocm.o +diff --git a/drivers/misc/ocm.c b/drivers/misc/ocm.c +new file mode 100644 +index 00000000..682b440c +--- /dev/null ++++ b/drivers/misc/ocm.c +@@ -0,0 +1,194 @@ ++#include <linux/miscdevice.h> ++#include <linux/fs.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/uaccess.h> ++#include <linux/io.h> ++#include <linux/platform_device.h> ++#include <linux/pm_runtime.h> ++#include <linux/of.h> ++ ++ ++ ++static uint8_t *zynq_ocm; ++static size_t zynq_ocm_len; ++ ++/* ++** This function will be called when we open the Misc device file ++*/ ++static int zynq_ocm_open(struct inode *inode, struct file *file) ++{ ++ pr_info("zynq_ocm device open\n"); ++ return 0; ++} ++ ++/* ++** This function will be called when we close the Misc Device file ++*/ ++static int zynq_ocm_close(struct inode *inodep, struct file *filp) ++{ ++ pr_info("zynq_ocm device close\n"); ++ return 0; ++} ++ ++/* ++** This function will be called when we write the Misc Device file ++*/ ++static ssize_t zynq_ocm_write(struct file *file, const char __user *buf, ++ size_t len, loff_t *ppos) ++{ ++ pr_info("zynq_ocm device write\n"); ++ ++ /* We are not doing anything with this data now */ ++ ++ return -ENODEV; ++} ++ ++/* ++** This function will be called when we read the Misc Device file ++*/ ++static ssize_t zynq_ocm_read(struct file *filp, char __user *buf, ++ size_t count, loff_t *f_pos) ++{ ++ ++ if (*f_pos>=zynq_ocm_len) return 0; ++ ++ if ((*f_pos+count)>zynq_ocm_len) { ++ count=zynq_ocm_len-*f_pos; ++ } ++ ++ if (copy_to_user(buf, zynq_ocm+(*f_pos), count)) ++ return -EFAULT; ++ ++ (*f_pos) += count; ++ ++ return count; ++} ++ ++//File operation structure ++static const struct file_operations fops = { ++ .owner = THIS_MODULE, ++ .write = zynq_ocm_write, ++ .read = zynq_ocm_read, ++ .open = zynq_ocm_open, ++ .release = zynq_ocm_close, ++ .llseek = no_llseek, ++}; ++ ++//Misc device structure ++struct miscdevice zynq_ocm_device = { ++ .minor = MISC_DYNAMIC_MINOR, ++ .name = "zynq_ocm", ++ .fops = &fops, ++}; ++ ++ ++static const struct of_device_id zynq_ocm_of_match[] = { ++ { .compatible = "xlnx,zynq-ocm-1.0" }, ++ { /* end of table */ } ++}; ++MODULE_DEVICE_TABLE(of, zynq_ocm_of_match); ++ ++ ++static int zynq_ocm_probe(struct platform_device *pdev) ++{ ++ struct resource *res; ++ const struct of_device_id *match; ++ uint8_t *ptr; ++ ++ match = of_match_node(zynq_ocm_of_match, pdev->dev.of_node); ++ if (!match) { ++ dev_err(&pdev->dev, "of_match_node() failed\n"); ++ return -EINVAL; ++ } ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ ++ zynq_ocm_len=res->end - res->start; ++ pr_info("zynq_ocm resource indicates length of 0x%x\n",zynq_ocm_len); ++ ++ ptr = devm_ioremap_resource(&pdev->dev, res); ++ pr_info("zynq_ocm devm_ioremap_resource() gives %px\n",ptr); ++ ++ if (IS_ERR(ptr)) ++ return PTR_ERR(ptr); ++ ++ zynq_ocm=ptr; ++ ++ return 0; ++} ++ ++/** ++ * zynq_gpio_remove - Driver removal function ++ * @pdev: platform device instance ++ * ++ * Return: 0 always ++ */ ++static int zynq_ocm_remove(struct platform_device *pdev) ++{ ++ //struct zynq_gpio *gpio = platform_get_drvdata(pdev); ++ ++ zynq_ocm=NULL; ++ return 0; ++} ++ ++static struct platform_driver zynq_ocm_driver = { ++ .driver = { ++ .name = "zynq_ocm", ++ .of_match_table = zynq_ocm_of_match, ++ }, ++ .probe = zynq_ocm_probe, ++ .remove = zynq_ocm_remove, ++}; ++ ++ ++static int __init zynq_ocm_init(void) ++{ ++ int error; ++ ++ error=platform_driver_register(&zynq_ocm_driver); ++ if (error) { ++ pr_err("platform_driver_register failed!!!\n"); ++ return error; ++ } ++ ++ error = misc_register(&zynq_ocm_device); ++ if (error) { ++ platform_driver_unregister(&zynq_ocm_driver); ++ pr_err("misc_register failed!!!\n"); ++ return error; ++ } ++ ++ pr_info("misc_register init done!!!\n"); ++ ++#if 0 ++ zynq_ocm = ioremap(0xfffc0000,0x40000); ++ pr_info("zynq_ocm mapped at %px\n",zynq_ocm); ++#endif ++ ++ return 0; ++} ++ ++static void __exit zynq_ocm_exit(void) ++{ ++ misc_deregister(&zynq_ocm_device); ++ platform_driver_unregister(&zynq_ocm_driver); ++ ++ pr_info("misc_register exit done!!!\n"); ++ ++#if 0 ++ if (zynq_ocm) iounmap(zynq_ocm); ++#endif ++} ++ ++module_init(zynq_ocm_init) ++module_exit(zynq_ocm_exit) ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("meh"); ++MODULE_DESCRIPTION("zynq_ocm driver"); ++MODULE_VERSION("1.29"); ++ ++ ++ |