To compile this support as a module, choose M here: the
module will be called i2o_config.
+config I2O_CONFIG_OLD_IOCTL
+ bool "Enable ioctls (OBSOLETE)"
+ depends on I2O_CONFIG
+ default y
+ ---help---
+ Enables old ioctls.
+
+config I2O_BUS
+ tristate "I2O Bus Adapter OSM"
+ depends on I2O
+ ---help---
+ Include support for the I2O Bus Adapter OSM. The Bus Adapter OSM
+ provides access to the busses on the I2O controller. The main purpose
+ is to rescan the bus to find new devices.
+
+ To compile this support as a module, choose M here: the
+ module will be called i2o_bus.
+
config I2O_BLOCK
tristate "I2O Block OSM"
depends on I2O
#
i2o_core-y += iop.o driver.o device.o debug.o pci.o exec-osm.o
+i2o_bus-y += bus-osm.o
+i2o_config-y += config-osm.o
obj-$(CONFIG_I2O) += i2o_core.o
obj-$(CONFIG_I2O_CONFIG)+= i2o_config.o
+obj-$(CONFIG_I2O_BUS) += i2o_bus.o
obj-$(CONFIG_I2O_BLOCK) += i2o_block.o
obj-$(CONFIG_I2O_SCSI) += i2o_scsi.o
obj-$(CONFIG_I2O_PROC) += i2o_proc.o
--- /dev/null
+/*
+ * Bus Adapter OSM
+ *
+ * Copyright (C) 2005 Markus Lidel <Markus.Lidel@shadowconnect.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * Fixes/additions:
+ * Markus Lidel <Markus.Lidel@shadowconnect.com>
+ * initial version.
+ */
+
+#include <linux/module.h>
+#include <linux/i2o.h>
+
+#define OSM_NAME "bus-osm"
+#define OSM_VERSION "$Rev$"
+#define OSM_DESCRIPTION "I2O Bus Adapter OSM"
+
+static struct i2o_driver i2o_bus_driver;
+
+/* Bus OSM class handling definition */
+static struct i2o_class_id i2o_bus_class_id[] = {
+ {I2O_CLASS_BUS_ADAPTER},
+ {I2O_CLASS_END}
+};
+
+/**
+ * i2o_bus_scan - Scan the bus for new devices
+ * @dev: I2O device of the bus, which should be scanned
+ *
+ * Scans the bus dev for new / removed devices. After the scan a new LCT
+ * will be fetched automatically.
+ *
+ * Returns 0 on success or negative error code on failure.
+ */
+static int i2o_bus_scan(struct i2o_device *dev)
+{
+ struct i2o_message __iomem *msg;
+ u32 m;
+
+ m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
+ if (m == I2O_QUEUE_EMPTY)
+ return -ETIMEDOUT;
+
+ writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
+ writel(I2O_CMD_BUS_SCAN << 24 | HOST_TID << 12 | dev->lct_data.tid,
+ &msg->u.head[1]);
+
+ return i2o_msg_post_wait(dev->iop, m, 60);
+};
+
+/**
+ * i2o_bus_store_scan - Scan the I2O Bus Adapter
+ * @d: device which should be scanned
+ *
+ * Returns count.
+ */
+static ssize_t i2o_bus_store_scan(struct device *d, const char *buf,
+ size_t count)
+{
+ struct i2o_device *i2o_dev = to_i2o_device(d);
+ int rc;
+
+ if ((rc = i2o_bus_scan(i2o_dev)))
+ osm_warn("bus scan failed %d\n", rc);
+
+ return count;
+}
+
+/* Bus Adapter OSM device attributes */
+static DEVICE_ATTR(scan, S_IWUSR, NULL, i2o_bus_store_scan);
+
+/**
+ * i2o_bus_probe - verify if dev is a I2O Bus Adapter device and install it
+ * @dev: device to verify if it is a I2O Bus Adapter device
+ *
+ * Because we want all Bus Adapters always return 0.
+ *
+ * Returns 0.
+ */
+static int i2o_bus_probe(struct device *dev)
+{
+ struct i2o_device *i2o_dev = to_i2o_device(get_device(dev));
+
+ device_create_file(dev, &dev_attr_scan);
+
+ osm_info("device added (TID: %03x)\n", i2o_dev->lct_data.tid);
+
+ return 0;
+};
+
+/**
+ * i2o_bus_remove - remove the I2O Bus Adapter device from the system again
+ * @dev: I2O Bus Adapter device which should be removed
+ *
+ * Always returns 0.
+ */
+static int i2o_bus_remove(struct device *dev)
+{
+ struct i2o_device *i2o_dev = to_i2o_device(dev);
+
+ device_remove_file(dev, &dev_attr_scan);
+
+ put_device(dev);
+
+ osm_info("device removed (TID: %03x)\n", i2o_dev->lct_data.tid);
+
+ return 0;
+};
+
+/* Bus Adapter OSM driver struct */
+static struct i2o_driver i2o_bus_driver = {
+ .name = OSM_NAME,
+ .classes = i2o_bus_class_id,
+ .driver = {
+ .probe = i2o_bus_probe,
+ .remove = i2o_bus_remove,
+ },
+};
+
+/**
+ * i2o_bus_init - Bus Adapter OSM initialization function
+ *
+ * Only register the Bus Adapter OSM in the I2O core.
+ *
+ * Returns 0 on success or negative error code on failure.
+ */
+static int __init i2o_bus_init(void)
+{
+ int rc;
+
+ printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
+
+ /* Register Bus Adapter OSM into I2O core */
+ rc = i2o_driver_register(&i2o_bus_driver);
+ if (rc) {
+ osm_err("Could not register Bus Adapter OSM\n");
+ return rc;
+ }
+
+ return 0;
+};
+
+/**
+ * i2o_bus_exit - Bus Adapter OSM exit function
+ *
+ * Unregisters Bus Adapter OSM from I2O core.
+ */
+static void __exit i2o_bus_exit(void)
+{
+ i2o_driver_unregister(&i2o_bus_driver);
+};
+
+MODULE_AUTHOR("Markus Lidel <Markus.Lidel@shadowconnect.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(OSM_DESCRIPTION);
+MODULE_VERSION(OSM_VERSION);
+
+module_init(i2o_bus_init);
+module_exit(i2o_bus_exit);
--- /dev/null
+/*
+ * Configuration OSM
+ *
+ * Copyright (C) 2005 Markus Lidel <Markus.Lidel@shadowconnect.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * Fixes/additions:
+ * Markus Lidel <Markus.Lidel@shadowconnect.com>
+ * initial version.
+ */
+
+#include <linux/module.h>
+#include <linux/i2o.h>
+#include <linux/namei.h>
+
+#include <asm/uaccess.h>
+
+#define OSM_NAME "config-osm"
+#define OSM_VERSION "1.248"
+#define OSM_DESCRIPTION "I2O Configuration OSM"
+
+/* access mode user rw */
+#define S_IWRSR (S_IRUSR | S_IWUSR)
+
+static struct i2o_driver i2o_config_driver;
+
+/* Special file operations for sysfs */
+struct fops_attribute {
+ struct bin_attribute bin;
+ struct file_operations fops;
+};
+
+/**
+ * sysfs_read_dummy
+ */
+static ssize_t sysfs_read_dummy(struct kobject *kobj, char *buf, loff_t offset,
+ size_t count)
+{
+ return 0;
+};
+
+/**
+ * sysfs_write_dummy
+ */
+static ssize_t sysfs_write_dummy(struct kobject *kobj, char *buf, loff_t offset,
+ size_t count)
+{
+ return 0;
+};
+
+/**
+ * sysfs_create_fops_file - Creates attribute with special file operations
+ * @kobj: kobject which should contains the attribute
+ * @attr: attributes which should be used to create file
+ *
+ * First creates attribute @attr in kobject @kobj. If it is the first time
+ * this function is called, merge old fops from sysfs with new one and
+ * write it back. Afterwords the new fops will be set for the created
+ * attribute.
+ *
+ * Returns 0 on success or negative error code on failure.
+ */
+static int sysfs_create_fops_file(struct kobject *kobj,
+ struct fops_attribute *attr)
+{
+ struct file_operations tmp, *fops;
+ struct dentry *d;
+ struct qstr qstr;
+ int rc;
+
+ fops = &attr->fops;
+
+ if (fops->read)
+ attr->bin.read = sysfs_read_dummy;
+
+ if (fops->write)
+ attr->bin.write = sysfs_write_dummy;
+
+ if ((rc = sysfs_create_bin_file(kobj, &attr->bin)))
+ return rc;
+
+ qstr.name = attr->bin.attr.name;
+ qstr.len = strlen(qstr.name);
+ qstr.hash = full_name_hash(qstr.name, qstr.len);
+
+ if ((d = lookup_hash(&qstr, kobj->dentry))) {
+ if (!fops->owner) {
+ memcpy(&tmp, d->d_inode->i_fop, sizeof(tmp));
+ if (fops->read)
+ tmp.read = fops->read;
+ if (fops->write)
+ tmp.write = fops->write;
+ memcpy(fops, &tmp, sizeof(tmp));
+ }
+
+ d->d_inode->i_fop = fops;
+ } else
+ sysfs_remove_bin_file(kobj, &attr->bin);
+
+ return -ENOENT;
+};
+
+/**
+ * sysfs_remove_fops_file - Remove attribute with special file operations
+ * @kobj: kobject which contains the attribute
+ * @attr: attributes which are used to create file
+ *
+ * Only wrapper arround sysfs_remove_bin_file()
+ *
+ * Returns 0 on success or negative error code on failure.
+ */
+static inline int sysfs_remove_fops_file(struct kobject *kobj,
+ struct fops_attribute *attr)
+{
+ return sysfs_remove_bin_file(kobj, &attr->bin);
+};
+
+/**
+ * i2o_config_read_hrt - Returns the HRT of the controller
+ * @kob: kernel object handle
+ * @buf: buffer into which the HRT should be copied
+ * @off: file offset
+ * @count: number of bytes to read
+ *
+ * Put @count bytes starting at @off into @buf from the HRT of the I2O
+ * controller corresponding to @kobj.
+ *
+ * Returns number of bytes copied into buffer.
+ */
+static ssize_t i2o_config_read_hrt(struct kobject *kobj, char *buf,
+ loff_t offset, size_t count)
+{
+ struct i2o_controller *c = kobj_to_i2o_device(kobj)->iop;
+ i2o_hrt *hrt = c->hrt.virt;
+
+ u32 size = (hrt->num_entries * hrt->entry_len + 2) * 4;
+
+ if (offset > size)
+ return 0;
+
+ if (offset + count > size)
+ count = size - offset;
+
+ memcpy(buf, (u8 *) hrt + offset, count);
+
+ return count;
+};
+
+/**
+ * i2o_config_read_lct - Returns the LCT of the controller
+ * @kob: kernel object handle
+ * @buf: buffer into which the LCT should be copied
+ * @off: file offset
+ * @count: number of bytes to read
+ *
+ * Put @count bytes starting at @off into @buf from the LCT of the I2O
+ * controller corresponding to @kobj.
+ *
+ * Returns number of bytes copied into buffer.
+ */
+static ssize_t i2o_config_read_lct(struct kobject *kobj, char *buf,
+ loff_t offset, size_t count)
+{
+ struct i2o_controller *c = kobj_to_i2o_device(kobj)->iop;
+ u32 size = c->lct->table_size * 4;
+
+ if (offset > size)
+ return 0;
+
+ if (offset + count > size)
+ count = size - offset;
+
+ memcpy(buf, (u8 *) c->lct + offset, count);
+
+ return count;
+};
+
+#define I2O_CONFIG_SW_ATTR(_name,_mode,_type,_swid) \
+static ssize_t i2o_config_##_name##_read(struct file *file, char __user *buf, size_t count, loff_t * offset) { \
+ return i2o_config_sw_read(file, buf, count, offset, _type, _swid); \
+};\
+\
+static ssize_t i2o_config_##_name##_write(struct file *file, const char __user *buf, size_t count, loff_t * offset) { \
+ return i2o_config_sw_write(file, buf, count, offset, _type, _swid); \
+}; \
+\
+static struct fops_attribute i2o_config_attr_##_name = { \
+ .bin = { .attr = { .name = __stringify(_name), .mode = _mode, \
+ .owner = THIS_MODULE }, \
+ .size = 0, }, \
+ .fops = { .write = i2o_config_##_name##_write, \
+ .read = i2o_config_##_name##_read} \
+};
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+
+/**
+ * i2o_config_dpt_reagion - Converts type and id to flash region
+ * @swtype: type of software module reading
+ * @swid: id of software which should be read
+ *
+ * Converts type and id from I2O spec to the matching region for DPT /
+ * Adaptec controllers.
+ *
+ * Returns region which match type and id or -1 on error.
+ */
+static u32 i2o_config_dpt_region(u8 swtype, u8 swid)
+{
+ switch (swtype) {
+ case I2O_SOFTWARE_MODULE_IRTOS:
+ /*
+ * content: operation firmware
+ * region size:
+ * 0xbc000 for 2554, 3754, 2564, 3757
+ * 0x170000 for 2865
+ * 0x17c000 for 3966
+ */
+ if (!swid)
+ return 0;
+
+ break;
+
+ case I2O_SOFTWARE_MODULE_IOP_PRIVATE:
+ /*
+ * content: BIOS and SMOR
+ * BIOS size: first 0x8000 bytes
+ * region size:
+ * 0x40000 for 2554, 3754, 2564, 3757
+ * 0x80000 for 2865, 3966
+ */
+ if (!swid)
+ return 1;
+
+ break;
+
+ case I2O_SOFTWARE_MODULE_IOP_CONFIG:
+ switch (swid) {
+ case 0:
+ /*
+ * content: NVRAM defaults
+ * region size: 0x2000 bytes
+ */
+ return 2;
+ case 1:
+ /*
+ * content: serial number
+ * region size: 0x2000 bytes
+ */
+ return 3;
+ }
+ break;
+ }
+
+ return -1;
+};
+
+#endif
+
+/**
+ * i2o_config_sw_read - Read a software module from controller
+ * @file: file pointer
+ * @buf: buffer into which the data should be copied
+ * @count: number of bytes to read
+ * @off: file offset
+ * @swtype: type of software module reading
+ * @swid: id of software which should be read
+ *
+ * Transfers @count bytes at offset @offset from IOP into buffer using
+ * type @swtype and id @swid as described in I2O spec.
+ *
+ * Returns number of bytes copied into buffer or error code on failure.
+ */
+static ssize_t i2o_config_sw_read(struct file *file, char __user * buf,
+ size_t count, loff_t * offset, u8 swtype,
+ u32 swid)
+{
+ struct sysfs_dirent *sd = file->f_dentry->d_parent->d_fsdata;
+ struct kobject *kobj = sd->s_element;
+ struct i2o_controller *c = kobj_to_i2o_device(kobj)->iop;
+ u32 m, function = I2O_CMD_SW_UPLOAD;
+ struct i2o_dma buffer;
+ struct i2o_message __iomem *msg;
+ u32 __iomem *mptr;
+ int rc, status;
+
+ m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+ if (m == I2O_QUEUE_EMPTY)
+ return -EBUSY;
+
+ mptr = &msg->body[3];
+
+ if ((rc = i2o_dma_alloc(&c->pdev->dev, &buffer, count, GFP_KERNEL))) {
+ i2o_msg_nop(c, m);
+ return rc;
+ }
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (c->adaptec) {
+ mptr = &msg->body[4];
+ function = I2O_CMD_PRIVATE;
+
+ writel(TEN_WORD_MSG_SIZE | SGL_OFFSET_8, &msg->u.head[0]);
+
+ writel(I2O_VENDOR_DPT << 16 | I2O_DPT_FLASH_READ,
+ &msg->body[0]);
+ writel(i2o_config_dpt_region(swtype, swid), &msg->body[1]);
+ writel(*offset, &msg->body[2]);
+ writel(count, &msg->body[3]);
+ } else
+#endif
+ writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
+
+ writel(0xD0000000 | count, mptr++);
+ writel(buffer.phys, mptr);
+
+ writel(function << 24 | HOST_TID << 12 | ADAPTER_TID, &msg->u.head[1]);
+ writel(i2o_config_driver.context, &msg->u.head[2]);
+ writel(0, &msg->u.head[3]);
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (!c->adaptec)
+#endif
+ {
+ writel((u32) swtype << 16 | (u32) 1 << 8, &msg->body[0]);
+ writel(0, &msg->body[1]);
+ writel(swid, &msg->body[2]);
+ }
+
+ status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+
+ if (status == I2O_POST_WAIT_OK) {
+ if (!(rc = copy_to_user(buf, buffer.virt, count))) {
+ rc = count;
+ *offset += count;
+ }
+ } else
+ rc = -EIO;
+
+ if (status != -ETIMEDOUT)
+ i2o_dma_free(&c->pdev->dev, &buffer);
+
+ return rc;
+};
+
+/**
+ * i2o_config_sw_write - Write a software module to controller
+ * @file: file pointer
+ * @buf: buffer into which the data should be copied
+ * @count: number of bytes to read
+ * @off: file offset
+ * @swtype: type of software module writing
+ * @swid: id of software which should be written
+ *
+ * Transfers @count bytes at offset @offset from buffer to IOP using
+ * type @swtype and id @swid as described in I2O spec.
+ *
+ * Returns number of bytes copied from buffer or error code on failure.
+ */
+static ssize_t i2o_config_sw_write(struct file *file, const char __user * buf,
+ size_t count, loff_t * offset, u8 swtype,
+ u32 swid)
+{
+ struct sysfs_dirent *sd = file->f_dentry->d_parent->d_fsdata;
+ struct kobject *kobj = sd->s_element;
+ struct i2o_controller *c = kobj_to_i2o_device(kobj)->iop;
+ u32 m, function = I2O_CMD_SW_DOWNLOAD;
+ struct i2o_dma buffer;
+ struct i2o_message __iomem *msg;
+ u32 __iomem *mptr;
+ int rc, status;
+
+ m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+ if (m == I2O_QUEUE_EMPTY)
+ return -EBUSY;
+
+ mptr = &msg->body[3];
+
+ if ((rc = i2o_dma_alloc(&c->pdev->dev, &buffer, count, GFP_KERNEL)))
+ goto nop_msg;
+
+ if ((rc = copy_from_user(buffer.virt, buf, count)))
+ goto free_buffer;
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (c->adaptec) {
+ mptr = &msg->body[4];
+ function = I2O_CMD_PRIVATE;
+
+ writel(TEN_WORD_MSG_SIZE | SGL_OFFSET_8, &msg->u.head[0]);
+
+ writel(I2O_VENDOR_DPT << 16 | I2O_DPT_FLASH_WRITE,
+ &msg->body[0]);
+ writel(i2o_config_dpt_region(swtype, swid), &msg->body[1]);
+ writel(*offset, &msg->body[2]);
+ writel(count, &msg->body[3]);
+ } else
+#endif
+ writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
+
+ writel(0xD4000000 | count, mptr++);
+ writel(buffer.phys, mptr);
+
+ writel(function << 24 | HOST_TID << 12 | ADAPTER_TID, &msg->u.head[1]);
+ writel(i2o_config_driver.context, &msg->u.head[2]);
+ writel(0, &msg->u.head[3]);
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (!c->adaptec)
+#endif
+ {
+ writel((u32) swtype << 16 | (u32) 1 << 8, &msg->body[0]);
+ writel(0, &msg->body[1]);
+ writel(swid, &msg->body[2]);
+ }
+
+ status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+
+ if (status != -ETIMEDOUT)
+ i2o_dma_free(&c->pdev->dev, &buffer);
+
+ if (status != I2O_POST_WAIT_OK)
+ return -EIO;
+
+ *offset += count;
+
+ return count;
+
+ free_buffer:
+ i2o_dma_free(&c->pdev->dev, &buffer);
+
+ nop_msg:
+ i2o_msg_nop(c, m);
+
+ return rc;
+};
+
+/* attribute for HRT in sysfs */
+static struct bin_attribute i2o_config_hrt_attr = {
+ .attr = {
+ .name = "hrt",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE},
+ .size = 0,
+ .read = i2o_config_read_hrt
+};
+
+/* attribute for LCT in sysfs */
+static struct bin_attribute i2o_config_lct_attr = {
+ .attr = {
+ .name = "lct",
+ .mode = S_IRUGO,
+ .owner = THIS_MODULE},
+ .size = 0,
+ .read = i2o_config_read_lct
+};
+
+/* IRTOS firmware access */
+I2O_CONFIG_SW_ATTR(irtos, S_IWRSR, I2O_SOFTWARE_MODULE_IRTOS, 0);
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+
+/*
+ * attribute for BIOS / SMOR, nvram and serial number access on DPT / Adaptec
+ * controllers
+ */
+I2O_CONFIG_SW_ATTR(bios, S_IWRSR, I2O_SOFTWARE_MODULE_IOP_PRIVATE, 0);
+I2O_CONFIG_SW_ATTR(nvram, S_IWRSR, I2O_SOFTWARE_MODULE_IOP_CONFIG, 0);
+I2O_CONFIG_SW_ATTR(serial, S_IWRSR, I2O_SOFTWARE_MODULE_IOP_CONFIG, 1);
+
+#endif
+
+/**
+ * i2o_config_notify_controller_add - Notify of added controller
+ * @c: the controller which was added
+ *
+ * If a I2O controller is added, we catch the notification to add sysfs
+ * entries.
+ */
+static void i2o_config_notify_controller_add(struct i2o_controller *c)
+{
+ struct kobject *kobj = &c->exec->device.kobj;
+
+ sysfs_create_bin_file(kobj, &i2o_config_hrt_attr);
+ sysfs_create_bin_file(kobj, &i2o_config_lct_attr);
+
+ sysfs_create_fops_file(kobj, &i2o_config_attr_irtos);
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (c->adaptec) {
+ sysfs_create_fops_file(kobj, &i2o_config_attr_bios);
+ sysfs_create_fops_file(kobj, &i2o_config_attr_nvram);
+ sysfs_create_fops_file(kobj, &i2o_config_attr_serial);
+ }
+#endif
+};
+
+/**
+ * i2o_config_notify_controller_remove - Notify of removed controller
+ * @c: the controller which was removed
+ *
+ * If a I2O controller is removed, we catch the notification to remove the
+ * sysfs entries.
+ */
+static void i2o_config_notify_controller_remove(struct i2o_controller *c)
+{
+ struct kobject *kobj = &c->exec->device.kobj;
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (c->adaptec) {
+ sysfs_remove_fops_file(kobj, &i2o_config_attr_serial);
+ sysfs_remove_fops_file(kobj, &i2o_config_attr_nvram);
+ sysfs_remove_fops_file(kobj, &i2o_config_attr_bios);
+ }
+#endif
+ sysfs_remove_fops_file(kobj, &i2o_config_attr_irtos);
+
+ sysfs_remove_bin_file(kobj, &i2o_config_lct_attr);
+ sysfs_remove_bin_file(kobj, &i2o_config_hrt_attr);
+};
+
+/* Config OSM driver struct */
+static struct i2o_driver i2o_config_driver = {
+ .name = OSM_NAME,
+ .notify_controller_add = i2o_config_notify_controller_add,
+ .notify_controller_remove = i2o_config_notify_controller_remove
+};
+
+#ifdef CONFIG_I2O_CONFIG_OLD_IOCTL
+#include "i2o_config.c"
+#endif
+
+/**
+ * i2o_config_init - Configuration OSM initialization function
+ *
+ * Registers Configuration OSM in the I2O core and if old ioctl's are
+ * compiled in initialize them.
+ *
+ * Returns 0 on success or negative error code on failure.
+ */
+static int __init i2o_config_init(void)
+{
+ printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
+
+ if (i2o_driver_register(&i2o_config_driver)) {
+ osm_err("handler register failed.\n");
+ return -EBUSY;
+ }
+#ifdef CONFIG_I2O_CONFIG_OLD_IOCTL
+ if (i2o_config_old_init())
+ i2o_driver_unregister(&i2o_config_driver);
+#endif
+
+ return 0;
+}
+
+/**
+ * i2o_config_exit - Configuration OSM exit function
+ *
+ * If old ioctl's are compiled in exit remove them and unregisters
+ * Configuration OSM from I2O core.
+ */
+static void i2o_config_exit(void)
+{
+#ifdef CONFIG_I2O_CONFIG_OLD_IOCTL
+ i2o_config_old_exit();
+#endif
+
+ i2o_driver_unregister(&i2o_config_driver);
+}
+
+MODULE_AUTHOR("Markus Lidel <Markus.Lidel@shadowconnect.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION(OSM_DESCRIPTION);
+MODULE_VERSION(OSM_VERSION);
+
+module_init(i2o_config_init);
+module_exit(i2o_config_exit);
{
struct i2o_driver *drv;
struct i2o_message __iomem *msg = i2o_msg_out_to_virt(c, m);
- u32 context = readl(&msg->u.s.icntxt);
+ u32 context;
+ unsigned long flags;
+
+ if(unlikely(!msg))
+ return -EIO;
+
+ context = readl(&msg->u.s.icntxt);
if (unlikely(context >= i2o_max_drivers)) {
osm_warn("%s: Spurious reply to unknown driver %d\n", c->name,
return -EIO;
}
- spin_lock(&i2o_drivers_lock);
+ spin_lock_irqsave(&i2o_drivers_lock, flags);
drv = i2o_drivers[context];
- spin_unlock(&i2o_drivers_lock);
+ spin_unlock_irqrestore(&i2o_drivers_lock, flags);
if (unlikely(!drv)) {
osm_warn("%s: Spurious reply to unknown driver %d\n", c->name,
u32 context)
{
struct i2o_exec_wait *wait, *tmp;
+ unsigned long flags;
static spinlock_t lock = SPIN_LOCK_UNLOCKED;
int rc = 1;
* already expired. Not much we can do about that except log it for
* debug purposes, increase timeout, and recompile.
*/
- spin_lock(&lock);
+ spin_lock_irqsave(&lock, flags);
list_for_each_entry_safe(wait, tmp, &i2o_exec_wait_list, list) {
if (wait->tcntxt == context) {
list_del(&wait->list);
+ spin_unlock_irqrestore(&lock, flags);
+
wait->m = m;
wait->msg = msg;
wait->complete = 1;
rc = -1;
}
- spin_unlock(&lock);
-
return rc;
}
}
- spin_unlock(&lock);
+ spin_unlock_irqrestore(&lock, flags);
osm_warn("%s: Bogus reply in POST WAIT (tr-context: %08x)!\n", c->name,
context);
return -1;
};
+/**
+ * i2o_exec_show_vendor_id - Displays Vendor ID of controller
+ * @d: device of which the Vendor ID should be displayed
+ * @buf: buffer into which the Vendor ID should be printed
+ *
+ * Returns number of bytes printed into buffer.
+ */
+static ssize_t i2o_exec_show_vendor_id(struct device *d, char *buf)
+{
+ struct i2o_device *dev = to_i2o_device(d);
+ u16 id;
+
+ if (i2o_parm_field_get(dev, 0x0000, 0, &id, 2)) {
+ sprintf(buf, "0x%04x", id);
+ return strlen(buf) + 1;
+ }
+
+ return 0;
+};
+
+/**
+ * i2o_exec_show_product_id - Displays Product ID of controller
+ * @d: device of which the Product ID should be displayed
+ * @buf: buffer into which the Product ID should be printed
+ *
+ * Returns number of bytes printed into buffer.
+ */
+static ssize_t i2o_exec_show_product_id(struct device *d, char *buf)
+{
+ struct i2o_device *dev = to_i2o_device(d);
+ u16 id;
+
+ if (i2o_parm_field_get(dev, 0x0000, 1, &id, 2)) {
+ sprintf(buf, "0x%04x", id);
+ return strlen(buf) + 1;
+ }
+
+ return 0;
+};
+
+/* Exec-OSM device attributes */
+static DEVICE_ATTR(vendor_id, S_IRUGO, i2o_exec_show_vendor_id, NULL);
+static DEVICE_ATTR(product_id, S_IRUGO, i2o_exec_show_product_id, NULL);
+
/**
* i2o_exec_probe - Called if a new I2O device (executive class) appears
* @dev: I2O device which should be probed
static int i2o_exec_probe(struct device *dev)
{
struct i2o_device *i2o_dev = to_i2o_device(dev);
+ struct i2o_controller *c = i2o_dev->iop;
i2o_event_register(i2o_dev, &i2o_exec_driver, 0, 0xffffffff);
- i2o_dev->iop->exec = i2o_dev;
+ c->exec = i2o_dev;
+
+ i2o_exec_lct_notify(c, c->lct->change_ind + 1);
+
+ device_create_file(dev, &dev_attr_vendor_id);
+ device_create_file(dev, &dev_attr_product_id);
return 0;
};
*/
static int i2o_exec_remove(struct device *dev)
{
+ device_remove_file(dev, &dev_attr_product_id);
+ device_remove_file(dev, &dev_attr_vendor_id);
+
i2o_event_register(to_i2o_device(dev), &i2o_exec_driver, 0, 0);
return 0;
*
* This function handles asynchronus LCT NOTIFY replies. It parses the
* new LCT and if the buffer for the LCT was to small sends a LCT NOTIFY
- * again.
+ * again, otherwise send LCT NOTIFY to get informed on next LCT change.
*/
static void i2o_exec_lct_modified(struct i2o_controller *c)
{
- if (i2o_device_parse_lct(c) == -EAGAIN)
- i2o_exec_lct_notify(c, 0);
+ u32 change_ind = 0;
+
+ if (i2o_device_parse_lct(c) != -EAGAIN)
+ change_ind = c->lct->change_ind + 1;
+
+ i2o_exec_lct_notify(c, change_ind);
};
/**
return i2o_msg_post_wait(dev->iop, m, 60);
};
+/**
+ * i2o_block_issue_flush - device-flush interface for block-layer
+ * @queue: the request queue of the device which should be flushed
+ * @disk: gendisk
+ * @error_sector: error offset
+ *
+ * Helper function to provide flush functionality to block-layer.
+ *
+ * Returns 0 on success or negative error code on failure.
+ */
+
+static int i2o_block_issue_flush(request_queue_t * queue, struct gendisk *disk,
+ sector_t * error_sector)
+{
+ struct i2o_block_device *i2o_blk_dev = queue->queuedata;
+ int rc = -ENODEV;
+
+ if (likely(i2o_blk_dev))
+ rc = i2o_block_device_flush(i2o_blk_dev->i2o_dev);
+
+ return rc;
+}
+
/**
* i2o_block_device_mount - Mount (load) the media of device dev
* @dev: I2O device which should receive the mount request
/**
* i2o_block_sglist_alloc - Allocate the SG list and map it
+ * @c: I2O controller to which the request belongs
* @ireq: I2O block request
*
- * Builds the SG list and map it into to be accessable by the controller.
+ * Builds the SG list and map it to be accessable by the controller.
*
- * Returns the number of elements in the SG list or 0 on failure.
+ * Returns 0 on failure or 1 on success.
*/
-static inline int i2o_block_sglist_alloc(struct i2o_block_request *ireq)
+static inline int i2o_block_sglist_alloc(struct i2o_controller *c,
+ struct i2o_block_request *ireq,
+ u32 __iomem ** mptr)
{
- struct device *dev = &ireq->i2o_blk_dev->i2o_dev->iop->pdev->dev;
int nents;
+ enum dma_data_direction direction;
+ ireq->dev = &c->pdev->dev;
nents = blk_rq_map_sg(ireq->req->q, ireq->req, ireq->sg_table);
if (rq_data_dir(ireq->req) == READ)
- ireq->sg_dma_direction = PCI_DMA_FROMDEVICE;
+ direction = PCI_DMA_FROMDEVICE;
else
- ireq->sg_dma_direction = PCI_DMA_TODEVICE;
+ direction = PCI_DMA_TODEVICE;
- ireq->sg_nents = dma_map_sg(dev, ireq->sg_table, nents,
- ireq->sg_dma_direction);
+ ireq->sg_nents = nents;
- return ireq->sg_nents;
+ return i2o_dma_map_sg(c, ireq->sg_table, nents, direction, mptr);
};
/**
*/
static inline void i2o_block_sglist_free(struct i2o_block_request *ireq)
{
- struct device *dev = &ireq->i2o_blk_dev->i2o_dev->iop->pdev->dev;
+ enum dma_data_direction direction;
- dma_unmap_sg(dev, ireq->sg_table, ireq->sg_nents,
- ireq->sg_dma_direction);
+ if (rq_data_dir(ireq->req) == READ)
+ direction = PCI_DMA_FROMDEVICE;
+ else
+ direction = PCI_DMA_TODEVICE;
+
+ dma_unmap_sg(ireq->dev, ireq->sg_table, ireq->sg_nents, direction);
};
/**
struct i2o_block_device *i2o_blk_dev = q->queuedata;
struct i2o_block_request *ireq;
+ if (unlikely(!i2o_blk_dev)) {
+ osm_err("block device already removed\n");
+ return BLKPREP_KILL;
+ }
+
/* request is already processed by us, so return */
if (req->flags & REQ_SPECIAL) {
osm_debug("REQ_SPECIAL already set!\n");
{
struct i2o_block_request *ireq = req->special;
struct i2o_block_device *dev = ireq->i2o_blk_dev;
- request_queue_t *q = dev->gd->queue;
+ request_queue_t *q = req->q;
unsigned long flags;
if (end_that_request_chunk(req, uptodate, nr_bytes)) {
- int leftover = (req->hard_nr_sectors << 9);
+ int leftover = (req->hard_nr_sectors << KERNEL_SECTOR_SHIFT);
if (blk_pc_request(req))
leftover = req->data_len;
spin_lock_irqsave(q->queue_lock, flags);
end_that_request_last(req);
- dev->open_queue_depth--;
- list_del(&ireq->queue);
+
+ if (likely(dev)) {
+ dev->open_queue_depth--;
+ list_del(&ireq->queue);
+ }
blk_start_queue(q);
* Don't stick a supertrak100 into cache aggressive modes
*/
- osm_err("%03x error status: %02x, detailed status: %04x\n",
- (le32_to_cpu(msg->u.head[1]) >> 12 & 0xfff),
+ osm_err("TID %03x error status: 0x%02x, detailed status: "
+ "0x%04x\n", (le32_to_cpu(msg->u.head[1]) >> 12 & 0xfff),
status >> 24, status & 0xffff);
req->errors++;
static int i2o_block_transfer(struct request *req)
{
struct i2o_block_device *dev = req->rq_disk->private_data;
- struct i2o_controller *c = dev->i2o_dev->iop;
+ struct i2o_controller *c;
int tid = dev->i2o_dev->lct_data.tid;
struct i2o_message __iomem *msg;
- void __iomem *mptr;
+ u32 __iomem *mptr;
struct i2o_block_request *ireq = req->special;
- struct scatterlist *sg;
- int sgnum;
- int i;
u32 m;
u32 tcntxt;
- u32 sg_flags;
+ u32 sgl_offset = SGL_OFFSET_8;
+ u32 ctl_flags = 0x00000000;
int rc;
+ u32 cmd;
+
+ if (unlikely(!dev->i2o_dev)) {
+ osm_err("transfer to removed drive\n");
+ rc = -ENODEV;
+ goto exit;
+ }
+
+ c = dev->i2o_dev->iop;
m = i2o_msg_get(c, &msg);
if (m == I2O_QUEUE_EMPTY) {
goto nop_msg;
}
- if ((sgnum = i2o_block_sglist_alloc(ireq)) <= 0) {
- rc = -ENOMEM;
- goto context_remove;
- }
-
- /* Build the message based on the request. */
writel(i2o_block_driver.context, &msg->u.s.icntxt);
writel(tcntxt, &msg->u.s.tcntxt);
- writel(req->nr_sectors << 9, &msg->body[1]);
- writel((((u64) req->sector) << 9) & 0xffffffff, &msg->body[2]);
- writel(req->sector >> 23, &msg->body[3]);
-
- mptr = &msg->body[4];
-
- sg = ireq->sg_table;
+ mptr = &msg->body[0];
if (rq_data_dir(req) == READ) {
- writel(I2O_CMD_BLOCK_READ << 24 | HOST_TID << 12 | tid,
- &msg->u.head[1]);
- sg_flags = 0x10000000;
+ cmd = I2O_CMD_BLOCK_READ << 24;
+
switch (dev->rcache) {
- case CACHE_NULL:
- writel(0, &msg->body[0]);
- break;
case CACHE_PREFETCH:
- writel(0x201F0008, &msg->body[0]);
+ ctl_flags = 0x201F0008;
break;
+
case CACHE_SMARTFETCH:
if (req->nr_sectors > 16)
- writel(0x201F0008, &msg->body[0]);
+ ctl_flags = 0x201F0008;
else
- writel(0x001F0000, &msg->body[0]);
+ ctl_flags = 0x001F0000;
+ break;
+
+ default:
break;
}
} else {
- writel(I2O_CMD_BLOCK_WRITE << 24 | HOST_TID << 12 | tid,
- &msg->u.head[1]);
- sg_flags = 0x14000000;
+ cmd = I2O_CMD_BLOCK_WRITE << 24;
+
switch (dev->wcache) {
- case CACHE_NULL:
- writel(0, &msg->body[0]);
- break;
case CACHE_WRITETHROUGH:
- writel(0x001F0008, &msg->body[0]);
+ ctl_flags = 0x001F0008;
break;
case CACHE_WRITEBACK:
- writel(0x001F0010, &msg->body[0]);
+ ctl_flags = 0x001F0010;
break;
case CACHE_SMARTBACK:
if (req->nr_sectors > 16)
- writel(0x001F0004, &msg->body[0]);
+ ctl_flags = 0x001F0004;
else
- writel(0x001F0010, &msg->body[0]);
+ ctl_flags = 0x001F0010;
break;
case CACHE_SMARTTHROUGH:
if (req->nr_sectors > 16)
- writel(0x001F0004, &msg->body[0]);
+ ctl_flags = 0x001F0004;
else
- writel(0x001F0010, &msg->body[0]);
+ ctl_flags = 0x001F0010;
+ default:
+ break;
+ }
+ }
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (c->adaptec) {
+ u8 cmd[10];
+ u32 scsi_flags;
+ u16 hwsec = queue_hardsect_size(req->q) >> KERNEL_SECTOR_SHIFT;
+
+ memset(cmd, 0, 10);
+
+ sgl_offset = SGL_OFFSET_12;
+
+ writel(I2O_CMD_PRIVATE << 24 | HOST_TID << 12 | tid,
+ &msg->u.head[1]);
+
+ writel(I2O_VENDOR_DPT << 16 | I2O_CMD_SCSI_EXEC, mptr++);
+ writel(tid, mptr++);
+
+ /*
+ * ENABLE_DISCONNECT
+ * SIMPLE_TAG
+ * RETURN_SENSE_DATA_IN_REPLY_MESSAGE_FRAME
+ */
+ if (rq_data_dir(req) == READ) {
+ cmd[0] = 0x28;
+ scsi_flags = 0x60a0000a;
+ } else {
+ cmd[0] = 0x2A;
+ scsi_flags = 0xa0a0000a;
}
+
+ writel(scsi_flags, mptr++);
+
+ *((u32 *) & cmd[2]) = cpu_to_be32(req->sector * hwsec);
+ *((u16 *) & cmd[7]) = cpu_to_be16(req->nr_sectors * hwsec);
+
+ memcpy_toio(mptr, cmd, 10);
+ mptr += 4;
+ writel(req->nr_sectors << KERNEL_SECTOR_SHIFT, mptr++);
+ } else
+#endif
+ {
+ writel(cmd | HOST_TID << 12 | tid, &msg->u.head[1]);
+ writel(ctl_flags, mptr++);
+ writel(req->nr_sectors << KERNEL_SECTOR_SHIFT, mptr++);
+ writel((u32) (req->sector << KERNEL_SECTOR_SHIFT), mptr++);
+ writel(req->sector >> (32 - KERNEL_SECTOR_SHIFT), mptr++);
}
- for (i = sgnum; i > 0; i--) {
- if (i == 1)
- sg_flags |= 0x80000000;
- writel(sg_flags | sg_dma_len(sg), mptr);
- writel(sg_dma_address(sg), mptr + 4);
- mptr += 8;
- sg++;
+ if (!i2o_block_sglist_alloc(c, ireq, &mptr)) {
+ rc = -ENOMEM;
+ goto context_remove;
}
- writel(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) | SGL_OFFSET_8,
- &msg->u.head[0]);
+ writel(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) |
+ sgl_offset, &msg->u.head[0]);
list_add_tail(&ireq->queue, &dev->open_queue);
dev->open_queue_depth++;
queue_depth = ireq->i2o_blk_dev->open_queue_depth;
- if (queue_depth < I2O_BLOCK_MAX_OPEN_REQUESTS)
+ if (queue_depth < I2O_BLOCK_MAX_OPEN_REQUESTS) {
if (!i2o_block_transfer(req)) {
blkdev_dequeue_request(req);
continue;
- }
+ } else
+ osm_info("transfer error\n");
+ }
if (queue_depth)
break;
}
blk_queue_prep_rq(queue, i2o_block_prep_req_fn);
+ blk_queue_issue_flush_fn(queue, i2o_block_issue_flush);
gd->major = I2O_MAJOR;
gd->queue = queue;
u64 size;
u32 blocksize;
u32 flags, status;
- int segments;
+ u16 body_size = 4;
+ unsigned short max_sectors;
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC
+ if (c->adaptec)
+ body_size = 8;
+#endif
+
+ if (c->limit_sectors)
+ max_sectors = I2O_MAX_SECTORS_LIMITED;
+ else
+ max_sectors = I2O_MAX_SECTORS;
/* skip devices which are used by IOP */
if (i2o_dev->lct_data.user_tid != 0xfff) {
queue = gd->queue;
queue->queuedata = i2o_blk_dev;
- blk_queue_max_phys_segments(queue, I2O_MAX_SEGMENTS);
- blk_queue_max_sectors(queue, I2O_MAX_SECTORS);
-
- if (c->short_req)
- segments = 8;
- else {
- i2o_status_block *sb;
+ blk_queue_max_phys_segments(queue, I2O_MAX_PHYS_SEGMENTS);
+ blk_queue_max_sectors(queue, max_sectors);
+ blk_queue_max_hw_segments(queue, i2o_sg_tablesize(c, body_size));
- sb = c->status_block.virt;
-
- segments = (sb->inbound_frame_size -
- sizeof(struct i2o_message) / 4 - 4) / 2;
- }
-
- blk_queue_max_hw_segments(queue, segments);
-
- osm_debug("max sectors = %d\n", I2O_MAX_SECTORS);
- osm_debug("phys segments = %d\n", I2O_MAX_SEGMENTS);
- osm_debug("hw segments = %d\n", segments);
+ osm_debug("max sectors = %d\n", queue->max_phys_segments);
+ osm_debug("phys segments = %d\n", queue->max_sectors);
+ osm_debug("max hw segments = %d\n", queue->max_hw_segments);
/*
* Ask for the current media data. If that isn't supported
* then we ask for the device capacity data
*/
- if (!i2o_parm_field_get(i2o_dev, 0x0004, 0, &size, 8))
- if (!i2o_parm_field_get(i2o_dev, 0x0000, 4, &size, 8)) {
- osm_warn("could not get size of %s\n", gd->disk_name);
- size = 0;
- }
+ if (i2o_parm_field_get(i2o_dev, 0x0004, 1, &blocksize, 4) ||
+ i2o_parm_field_get(i2o_dev, 0x0000, 3, &blocksize, 4)) {
+ blk_queue_hardsect_size(queue, blocksize);
+ } else
+ osm_warn("unable to get blocksize of %s\n", gd->disk_name);
- if (!i2o_parm_field_get(i2o_dev, 0x0004, 1, &blocksize, 4))
- if (!i2o_parm_field_get(i2o_dev, 0x0000, 3, &blocksize, 4)) {
- osm_warn("unable to get blocksize of %s\n",
- gd->disk_name);
- blocksize = 0;
- }
+ if (i2o_parm_field_get(i2o_dev, 0x0004, 0, &size, 8) ||
+ i2o_parm_field_get(i2o_dev, 0x0000, 4, &size, 8)) {
+ set_capacity(gd, size >> KERNEL_SECTOR_SHIFT);
+ } else
+ osm_warn("could not get size of %s\n", gd->disk_name);
if (!i2o_parm_field_get(i2o_dev, 0x0000, 2, &i2o_blk_dev->power, 2))
i2o_blk_dev->power = 0;
i2o_parm_field_get(i2o_dev, 0x0000, 5, &flags, 4);
i2o_parm_field_get(i2o_dev, 0x0000, 6, &status, 4);
- set_capacity(gd, size >> 9);
-
i2o_event_register(i2o_dev, &i2o_block_driver, 0, 0xffffffff);
add_disk(gd);
goto exit;
}
- i2o_blk_req_pool.pool = mempool_create(I2O_REQ_MEMPOOL_SIZE,
+ i2o_blk_req_pool.pool = mempool_create(I2O_BLOCK_REQ_MEMPOOL_SIZE,
mempool_alloc_slab,
mempool_free_slab,
i2o_blk_req_pool.slab);
struct list_head queue;
struct request *req; /* corresponding request */
struct i2o_block_device *i2o_blk_dev; /* I2O block device */
- int sg_dma_direction; /* direction of DMA buffer read/write */
+ struct device *dev; /* device used for DMA */
int sg_nents; /* number of SG elements */
- struct scatterlist sg_table[I2O_MAX_SEGMENTS]; /* SG table */
+ struct scatterlist sg_table[I2O_MAX_PHYS_SEGMENTS]; /* SG table */
};
/* I2O Block device delayed request */
* 2 of the License, or (at your option) any later version.
*/
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/i2o.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
#include <linux/miscdevice.h>
-#include <linux/mm.h>
-#include <linux/spinlock.h>
#include <linux/smp_lock.h>
-#include <linux/ioctl32.h>
#include <linux/compat.h>
-#include <linux/syscalls.h>
#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#define OSM_NAME "config-osm"
-#define OSM_VERSION "$Rev$"
-#define OSM_DESCRIPTION "I2O Configuration OSM"
extern int i2o_parm_issue(struct i2o_device *, int, void *, int, void *, int);
static struct i2o_cfg_info *open_files = NULL;
static ulong i2o_cfg_info_id = 0;
-/**
- * i2o_config_read_hrt - Returns the HRT of the controller
- * @kob: kernel object handle
- * @buf: buffer into which the HRT should be copied
- * @off: file offset
- * @count: number of bytes to read
- *
- * Put @count bytes starting at @off into @buf from the HRT of the I2O
- * controller corresponding to @kobj.
- *
- * Returns number of bytes copied into buffer.
- */
-static ssize_t i2o_config_read_hrt(struct kobject *kobj, char *buf,
- loff_t offset, size_t count)
-{
- struct i2o_controller *c = to_i2o_controller(container_of(kobj,
- struct device,
- kobj));
- i2o_hrt *hrt = c->hrt.virt;
-
- u32 size = (hrt->num_entries * hrt->entry_len + 2) * 4;
-
- if(offset > size)
- return 0;
-
- if(offset + count > size)
- count = size - offset;
-
- memcpy(buf, (u8 *) hrt + offset, count);
-
- return count;
-};
-
-/**
- * i2o_config_read_lct - Returns the LCT of the controller
- * @kob: kernel object handle
- * @buf: buffer into which the LCT should be copied
- * @off: file offset
- * @count: number of bytes to read
- *
- * Put @count bytes starting at @off into @buf from the LCT of the I2O
- * controller corresponding to @kobj.
- *
- * Returns number of bytes copied into buffer.
- */
-static ssize_t i2o_config_read_lct(struct kobject *kobj, char *buf,
- loff_t offset, size_t count)
-{
- struct i2o_controller *c = to_i2o_controller(container_of(kobj,
- struct device,
- kobj));
- u32 size = c->lct->table_size * 4;
-
- if(offset > size)
- return 0;
-
- if(offset + count > size)
- count = size - offset;
-
- memcpy(buf, (u8 *) c->lct + offset, count);
-
- return count;
-};
-
-/* attribute for HRT in sysfs */
-static struct bin_attribute i2o_config_hrt_attr = {
- .attr = {
- .name = "hrt",
- .mode = S_IRUGO,
- .owner = THIS_MODULE
- },
- .size = 0,
- .read = i2o_config_read_hrt
-};
-
-/* attribute for LCT in sysfs */
-static struct bin_attribute i2o_config_lct_attr = {
- .attr = {
- .name = "lct",
- .mode = S_IRUGO,
- .owner = THIS_MODULE
- },
- .size = 0,
- .read = i2o_config_read_lct
-};
-
-/**
- * i2o_config_notify_controller_add - Notify of added controller
- * @c: the controller which was added
- *
- * If a I2O controller is added, we catch the notification to add sysfs
- * entries.
- */
-static void i2o_config_notify_controller_add(struct i2o_controller *c)
-{
- sysfs_create_bin_file(&(c->device.kobj), &i2o_config_hrt_attr);
- sysfs_create_bin_file(&(c->device.kobj), &i2o_config_lct_attr);
-};
-
-/**
- * i2o_config_notify_controller_remove - Notify of removed controller
- * @c: the controller which was removed
- *
- * If a I2O controller is removed, we catch the notification to remove the
- * sysfs entries.
- */
-static void i2o_config_notify_controller_remove(struct i2o_controller *c)
-{
- sysfs_remove_bin_file(&c->device.kobj, &i2o_config_lct_attr);
- sysfs_remove_bin_file(&c->device.kobj, &i2o_config_hrt_attr);
-};
-
-/* Config OSM driver struct */
-static struct i2o_driver i2o_config_driver = {
- .name = OSM_NAME,
- .notify_controller_add = i2o_config_notify_controller_add,
- .notify_controller_remove = i2o_config_notify_controller_remove
-};
-
static int i2o_cfg_getiops(unsigned long arg)
{
struct i2o_controller *c;
&config_fops
};
-static int __init i2o_config_init(void)
+static int __init i2o_config_old_init(void)
{
- printk(KERN_INFO OSM_DESCRIPTION " v" OSM_VERSION "\n");
-
spin_lock_init(&i2o_config_lock);
if (misc_register(&i2o_miscdev) < 0) {
osm_err("can't register device.\n");
return -EBUSY;
}
- /*
- * Install our handler
- */
- if (i2o_driver_register(&i2o_config_driver)) {
- osm_err("handler register failed.\n");
- misc_deregister(&i2o_miscdev);
- return -EBUSY;
- }
return 0;
}
-static void i2o_config_exit(void)
+static void i2o_config_old_exit(void)
{
misc_deregister(&i2o_miscdev);
- i2o_driver_unregister(&i2o_config_driver);
}
MODULE_AUTHOR("Red Hat Software");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION(OSM_DESCRIPTION);
-MODULE_VERSION(OSM_VERSION);
-
-module_init(i2o_config_init);
-module_exit(i2o_config_exit);
case I2O_CLASS_FLOPPY_DEVICE:
idx = 12;
break;
- case I2O_CLASS_BUS_ADAPTER_PORT:
+ case I2O_CLASS_BUS_ADAPTER:
idx = 13;
break;
case I2O_CLASS_PEER_TRANSPORT_AGENT:
seq_printf(seq, ", Unknown Device Type");
break;
- case I2O_CLASS_BUS_ADAPTER_PORT:
+ case I2O_CLASS_BUS_ADAPTER:
if (lct->lct_entry[i].sub_class < BUS_TABLE_SIZE)
seq_printf(seq, ", %s",
bus_ports[lct->lct_entry[i].
i2o_status_block *sb;
list_for_each_entry(i2o_dev, &c->devices, list)
- if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER_PORT) {
+ if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER) {
if (i2o_parm_field_get(i2o_dev, 0x0000, 0, &type, 1)
&& (type == 0x01)) /* SCSI bus */
max_channel++;
i = 0;
list_for_each_entry(i2o_dev, &c->devices, list)
- if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER_PORT) {
+ if (i2o_dev->lct_data.class_id == I2O_CLASS_BUS_ADAPTER) {
if (i2o_parm_field_get(i2o_dev, 0x0000, 0, &type, 1) || (type == 1)) /* only SCSI bus */
i2o_shost->channel[i++] = i2o_dev;
shost_for_each_device(scsi_dev, i2o_shost->scsi_host)
if (scsi_dev->hostdata == i2o_dev) {
+ sysfs_remove_link(&i2o_dev->device.kobj, "scsi");
scsi_remove_device(scsi_dev);
scsi_device_put(scsi_dev);
break;
scsi_dev =
__scsi_add_device(i2o_shost->scsi_host, channel, id, lun, i2o_dev);
- if (!scsi_dev) {
+ if (IS_ERR(scsi_dev)) {
osm_warn("can not add SCSI device %03x\n",
i2o_dev->lct_data.tid);
- return -EFAULT;
+ return PTR_ERR(scsi_dev);
}
+ sysfs_create_link(&i2o_dev->device.kobj, &scsi_dev->sdev_gendev.kobj, "scsi");
+
osm_info("device added (TID: %03x) channel: %d, id: %d, lun: %d\n",
i2o_dev->lct_data.tid, channel, id, (unsigned int)lun);
int tid;
struct i2o_message __iomem *msg;
u32 m;
- u32 scsi_flags, sg_flags;
+ /*
+ * ENABLE_DISCONNECT
+ * SIMPLE_TAG
+ * RETURN_SENSE_DATA_IN_REPLY_MESSAGE_FRAME
+ */
+ u32 scsi_flags = 0x20a00000;
+ u32 sg_flags;
u32 __iomem *mptr;
u32 __iomem *lenptr;
u32 len;
switch (SCpnt->sc_data_direction) {
case PCI_DMA_NONE:
- scsi_flags = 0x00000000; // DATA NO XFER
+ /* DATA NO XFER */
sg_flags = 0x00000000;
break;
case PCI_DMA_TODEVICE:
- scsi_flags = 0x80000000; // DATA OUT (iop-->dev)
+ /* DATA OUT (iop-->dev) */
+ scsi_flags |= 0x80000000;
sg_flags = 0x14000000;
break;
case PCI_DMA_FROMDEVICE:
- scsi_flags = 0x40000000; // DATA IN (iop<--dev)
+ /* DATA IN (iop<--dev) */
+ scsi_flags |= 0x40000000;
sg_flags = 0x10000000;
break;
}
*/
- /* Direction, disconnect ok, tag, CDBLen */
- writel(scsi_flags | 0x20200000 | SCpnt->cmd_len, mptr ++);
+ writel(scsi_flags | SCpnt->cmd_len, mptr++);
/* Write SCSI command into the message - always 16 byte block */
memcpy_toio(mptr, SCpnt->cmnd, 16);
return rc;
}
+/**
+ * i2o_iop_init_outbound_queue - setup the outbound message queue
+ * @c: I2O controller
+ *
+ * Clear and (re)initialize IOP's outbound queue and post the message
+ * frames to the IOP.
+ *
+ * Returns 0 on success or a negative errno code on failure.
+ */
+static int i2o_iop_init_outbound_queue(struct i2o_controller *c)
+{
+ u8 *status = c->status.virt;
+ u32 m;
+ struct i2o_message __iomem *msg;
+ ulong timeout;
+ int i;
+
+ osm_debug("%s: Initializing Outbound Queue...\n", c->name);
+
+ memset(status, 0, 4);
+
+ m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+ if (m == I2O_QUEUE_EMPTY)
+ return -ETIMEDOUT;
+
+ writel(EIGHT_WORD_MSG_SIZE | TRL_OFFSET_6, &msg->u.head[0]);
+ writel(I2O_CMD_OUTBOUND_INIT << 24 | HOST_TID << 12 | ADAPTER_TID,
+ &msg->u.head[1]);
+ writel(i2o_exec_driver.context, &msg->u.s.icntxt);
+ writel(0x0106, &msg->u.s.tcntxt); /* FIXME: why 0x0106, maybe in
+ Spec? */
+ writel(PAGE_SIZE, &msg->body[0]);
+ /* Outbound msg frame size in words and Initcode */
+ writel(MSG_FRAME_SIZE << 16 | 0x80, &msg->body[1]);
+ writel(0xd0000004, &msg->body[2]);
+ writel(i2o_dma_low(c->status.phys), &msg->body[3]);
+ writel(i2o_dma_high(c->status.phys), &msg->body[4]);
+
+ i2o_msg_post(c, m);
+
+ timeout = jiffies + I2O_TIMEOUT_INIT_OUTBOUND_QUEUE * HZ;
+ while (*status <= I2O_CMD_IN_PROGRESS) {
+ if (time_after(jiffies, timeout)) {
+ osm_warn("%s: Timeout Initializing\n", c->name);
+ return -ETIMEDOUT;
+ }
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ schedule_timeout(1);
+
+ rmb();
+ }
+
+ m = c->out_queue.phys;
+
+ /* Post frames */
+ for (i = 0; i < NMBR_MSG_FRAMES; i++) {
+ i2o_flush_reply(c, m);
+ udelay(1); /* Promise */
+ m += MSG_FRAME_SIZE * 4;
+ }
+
+ return 0;
+}
+
/**
* i2o_iop_reset - reset an I2O controller
* @c: controller to reset
writel(0, &msg->u.s.tcntxt); //FIXME: use reasonable transaction context
writel(0, &msg->body[0]);
writel(0, &msg->body[1]);
- writel(i2o_ptr_low((void *)c->status.phys), &msg->body[2]);
- writel(i2o_ptr_high((void *)c->status.phys), &msg->body[3]);
+ writel(i2o_dma_low(c->status.phys), &msg->body[2]);
+ writel(i2o_dma_high(c->status.phys), &msg->body[3]);
i2o_msg_post(c, m);
/* Wait for a reply */
timeout = jiffies + I2O_TIMEOUT_RESET * HZ;
while (!*status) {
- if (time_after(jiffies, timeout)) {
- printk(KERN_ERR "%s: IOP reset timeout.\n", c->name);
- rc = -ETIMEDOUT;
- goto exit;
- }
-
- /* Promise bug */
- if (status[1] || status[4]) {
- *status = 0;
+ if (time_after(jiffies, timeout))
break;
- }
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(1);
rmb();
}
- if (*status == I2O_CMD_IN_PROGRESS) {
+ switch (*status) {
+ case I2O_CMD_REJECTED:
+ osm_warn("%s: IOP reset rejected\n", c->name);
+ rc = -EPERM;
+ break;
+
+ case I2O_CMD_IN_PROGRESS:
/*
* Once the reset is sent, the IOP goes into the INIT state
- * which is indeterminate. We need to wait until the IOP
- * has rebooted before we can let the system talk to
- * it. We read the inbound Free_List until a message is
- * available. If we can't read one in the given ammount of
- * time, we assume the IOP could not reboot properly.
+ * which is indeterminate. We need to wait until the IOP has
+ * rebooted before we can let the system talk to it. We read
+ * the inbound Free_List until a message is available. If we
+ * can't read one in the given ammount of time, we assume the
+ * IOP could not reboot properly.
*/
pr_debug("%s: Reset in progress, waiting for reboot...\n",
c->name);
m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_RESET);
}
i2o_msg_nop(c, m);
- }
- /* from here all quiesce commands are safe */
- c->no_quiesce = 0;
+ /* from here all quiesce commands are safe */
+ c->no_quiesce = 0;
- /* If IopReset was rejected or didn't perform reset, try IopClear */
- i2o_status_get(c);
- if (*status == I2O_CMD_REJECTED || sb->iop_state != ADAPTER_STATE_RESET) {
- printk(KERN_WARNING "%s: Reset rejected, trying to clear\n",
- c->name);
- i2o_iop_clear(c);
- } else
- pr_debug("%s: Reset completed.\n", c->name);
+ /* verify if controller is in state RESET */
+ i2o_status_get(c);
+
+ if (!c->promise && (sb->iop_state != ADAPTER_STATE_RESET))
+ osm_warn("%s: reset completed, but adapter not in RESET"
+ " state.\n", c->name);
+ else
+ osm_debug("%s: reset completed.\n", c->name);
+
+ break;
+
+ default:
+ osm_err("%s: IOP reset timeout.\n", c->name);
+ rc = -ETIMEDOUT;
+ break;
+ }
exit:
/* Enable all IOPs */
return rc;
};
-/**
- * i2o_iop_init_outbound_queue - setup the outbound message queue
- * @c: I2O controller
- *
- * Clear and (re)initialize IOP's outbound queue and post the message
- * frames to the IOP.
- *
- * Returns 0 on success or a negative errno code on failure.
- */
-static int i2o_iop_init_outbound_queue(struct i2o_controller *c)
-{
- u8 *status = c->status.virt;
- u32 m;
- struct i2o_message __iomem *msg;
- ulong timeout;
- int i;
-
- pr_debug("%s: Initializing Outbound Queue...\n", c->name);
-
- memset(status, 0, 4);
-
- m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
- if (m == I2O_QUEUE_EMPTY)
- return -ETIMEDOUT;
-
- writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6, &msg->u.head[0]);
- writel(I2O_CMD_OUTBOUND_INIT << 24 | HOST_TID << 12 | ADAPTER_TID,
- &msg->u.head[1]);
- writel(i2o_exec_driver.context, &msg->u.s.icntxt);
- writel(0x00000000, &msg->u.s.tcntxt);
- writel(PAGE_SIZE, &msg->body[0]);
- writel(MSG_FRAME_SIZE << 16 | 0x80, &msg->body[1]); /* Outbound msg frame
- size in words and Initcode */
- writel(0xd0000004, &msg->body[2]);
- writel(i2o_ptr_low((void *)c->status.phys), &msg->body[3]);
- writel(i2o_ptr_high((void *)c->status.phys), &msg->body[4]);
-
- i2o_msg_post(c, m);
-
- timeout = jiffies + I2O_TIMEOUT_INIT_OUTBOUND_QUEUE * HZ;
- while (*status <= I2O_CMD_IN_PROGRESS) {
- if (time_after(jiffies, timeout)) {
- printk(KERN_WARNING "%s: Timeout Initializing\n",
- c->name);
- return -ETIMEDOUT;
- }
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
-
- rmb();
- }
-
- m = c->out_queue.phys;
-
- /* Post frames */
- for (i = 0; i < NMBR_MSG_FRAMES; i++) {
- i2o_flush_reply(c, m);
- udelay(1); /* Promise */
- m += MSG_FRAME_SIZE * 4;
- }
-
- return 0;
-}
-
-/**
- * i2o_iop_send_nop - send a core NOP message
- * @c: controller
- *
- * Send a no-operation message with a reply set to cause no
- * action either. Needed for bringing up promise controllers.
- */
-static int i2o_iop_send_nop(struct i2o_controller *c)
-{
- struct i2o_message __iomem *msg;
- u32 m = i2o_msg_get_wait(c, &msg, HZ);
- if (m == I2O_QUEUE_EMPTY)
- return -ETIMEDOUT;
- i2o_msg_nop(c, m);
- return 0;
-}
-
/**
* i2o_iop_activate - Bring controller up to HOLD
* @c: controller
*/
static int i2o_iop_activate(struct i2o_controller *c)
{
- struct pci_dev *i960 = NULL;
i2o_status_block *sb = c->status_block.virt;
int rc;
-
- if (c->promise) {
- /* Beat up the hardware first of all */
- i960 =
- pci_find_slot(c->pdev->bus->number,
- PCI_DEVFN(PCI_SLOT(c->pdev->devfn), 0));
- if (i960)
- pci_write_config_word(i960, 0x42, 0);
-
- /* Follow this sequence precisely or the controller
- ceases to perform useful functions until reboot */
- if ((rc = i2o_iop_send_nop(c)))
- return rc;
-
- if ((rc = i2o_iop_reset(c)))
- return rc;
- }
+ int state;
/* In INIT state, Wait Inbound Q to initialize (in i2o_status_get) */
/* In READY state, Get status */
if (rc) {
printk(KERN_INFO "%s: Unable to obtain status, "
"attempting a reset.\n", c->name);
- if (i2o_iop_reset(c))
+ rc = i2o_iop_reset(c);
+ if (rc)
return rc;
}
switch (sb->iop_state) {
case ADAPTER_STATE_FAULTED:
printk(KERN_CRIT "%s: hardware fault\n", c->name);
- return -ENODEV;
+ return -EFAULT;
case ADAPTER_STATE_READY:
case ADAPTER_STATE_OPERATIONAL:
case ADAPTER_STATE_HOLD:
case ADAPTER_STATE_FAILED:
pr_debug("%s: already running, trying to reset...\n", c->name);
- if (i2o_iop_reset(c))
- return -ENODEV;
+ rc = i2o_iop_reset(c);
+ if (rc)
+ return rc;
}
+ /* preserve state */
+ state = sb->iop_state;
+
rc = i2o_iop_init_outbound_queue(c);
if (rc)
return rc;
- if (c->promise) {
- if ((rc = i2o_iop_send_nop(c)))
- return rc;
+ /* if adapter was not in RESET state clear now */
+ if (state != ADAPTER_STATE_RESET)
+ i2o_iop_clear(c);
- if ((rc = i2o_status_get(c)))
- return rc;
+ i2o_status_get(c);
- if (i960)
- pci_write_config_word(i960, 0x42, 0x3FF);
+ if (sb->iop_state != ADAPTER_STATE_HOLD) {
+ osm_err("%s: failed to bring IOP into HOLD state\n", c->name);
+ return -EIO;
}
- /* In HOLD state */
-
- rc = i2o_hrt_get(c);
-
- return rc;
+ return i2o_hrt_get(c);
};
/**
writel(0, &msg->u.s.tcntxt); // FIXME: use resonable transaction context
writel(0, &msg->body[0]);
writel(0, &msg->body[1]);
- writel(i2o_ptr_low((void *)c->status_block.phys), &msg->body[2]);
- writel(i2o_ptr_high((void *)c->status_block.phys), &msg->body[3]);
+ writel(i2o_dma_low(c->status_block.phys), &msg->body[2]);
+ writel(i2o_dma_high(c->status_block.phys), &msg->body[3]);
writel(sizeof(i2o_status_block), &msg->body[4]); /* always 88 bytes */
i2o_msg_post(c, m);
{0}
};
-/**
- * i2o_dma_realloc - Realloc DMA memory
- * @dev: struct device pointer to the PCI device of the I2O controller
- * @addr: pointer to a i2o_dma struct DMA buffer
- * @len: new length of memory
- * @gfp_mask: GFP mask
- *
- * If there was something allocated in the addr, free it first. If len > 0
- * than try to allocate it and write the addresses back to the addr
- * structure. If len == 0 set the virtual address to NULL.
- *
- * Returns the 0 on success or negative error code on failure.
- */
-int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr, size_t len,
- unsigned int gfp_mask)
-{
- i2o_dma_free(dev, addr);
-
- if (len)
- return i2o_dma_alloc(dev, addr, len, gfp_mask);
-
- return 0;
-};
-
/**
* i2o_pci_free - Frees the DMA memory for the I2O controller
* @c: I2O controller to free
} else
c->in_queue = c->base;
+ c->irq_status = c->base.virt + I2O_IRQ_STATUS;
c->irq_mask = c->base.virt + I2O_IRQ_MASK;
c->in_port = c->base.virt + I2O_IN_PORT;
c->out_port = c->base.virt + I2O_OUT_PORT;
static irqreturn_t i2o_pci_interrupt(int irq, void *dev_id, struct pt_regs *r)
{
struct i2o_controller *c = dev_id;
- struct device *dev = &c->pdev->dev;
- u32 mv = readl(c->out_port);
-
- /*
- * Old 960 steppings had a bug in the I2O unit that caused
- * the queue to appear empty when it wasn't.
- */
- if (mv == I2O_QUEUE_EMPTY) {
- mv = readl(c->out_port);
- if (unlikely(mv == I2O_QUEUE_EMPTY))
- return IRQ_NONE;
- else
- pr_debug("%s: 960 bug detected\n", c->name);
- }
+ u32 m;
+ irqreturn_t rc = IRQ_NONE;
+
+ while (readl(c->irq_status) & I2O_IRQ_OUTBOUND_POST) {
+ m = readl(c->out_port);
+ if (m == I2O_QUEUE_EMPTY) {
+ /*
+ * Old 960 steppings had a bug in the I2O unit that
+ * caused the queue to appear empty when it wasn't.
+ */
+ m = readl(c->out_port);
+ if (unlikely(m == I2O_QUEUE_EMPTY))
+ break;
+ }
- while (mv != I2O_QUEUE_EMPTY) {
/* dispatch it */
- if (i2o_driver_dispatch(c, mv))
+ if (i2o_driver_dispatch(c, m))
/* flush it if result != 0 */
- i2o_flush_reply(c, mv);
+ i2o_flush_reply(c, m);
- /*
- * That 960 bug again...
- */
- mv = readl(c->out_port);
- if (mv == I2O_QUEUE_EMPTY)
- mv = readl(c->out_port);
+ rc = IRQ_HANDLED;
}
- return IRQ_HANDLED;
+ return rc;
}
/**
#endif /* __KERNEL__ */
+/*
+ * Vendors
+ */
+#define I2O_VENDOR_DPT 0x001b
/*
* I2O Control IOCTLs and structures
#define I2O_CLASS_ATE_PERIPHERAL 0x061
#define I2O_CLASS_FLOPPY_CONTROLLER 0x070
#define I2O_CLASS_FLOPPY_DEVICE 0x071
-#define I2O_CLASS_BUS_ADAPTER_PORT 0x080
+#define I2O_CLASS_BUS_ADAPTER 0x080
#define I2O_CLASS_PEER_TRANSPORT_AGENT 0x090
#define I2O_CLASS_PEER_TRANSPORT 0x091
#define I2O_CLASS_END 0xfff
void __iomem *in_port; /* Inbout port address */
void __iomem *out_port; /* Outbound port address */
- void __iomem *irq_mask; /* Interrupt register address */
+ void __iomem *irq_status; /* Interrupt status register address */
+ void __iomem *irq_mask; /* Interrupt mask register address */
/* Dynamic LCT related data */
extern void i2o_msg_nop(struct i2o_controller *, u32);
static inline void i2o_flush_reply(struct i2o_controller *, u32);
-/* DMA handling functions */
-static inline int i2o_dma_alloc(struct device *, struct i2o_dma *, size_t,
- unsigned int);
-static inline void i2o_dma_free(struct device *, struct i2o_dma *);
-int i2o_dma_realloc(struct device *, struct i2o_dma *, size_t, unsigned int);
-
-static inline int i2o_dma_map(struct device *, struct i2o_dma *);
-static inline void i2o_dma_unmap(struct device *, struct i2o_dma *);
-
/* IOP functions */
extern int i2o_status_get(struct i2o_controller *);
{
return (u32) ((u64) ptr >> 32);
};
+
+static inline u32 i2o_dma_low(dma_addr_t dma_addr)
+{
+ return (u32) (u64) dma_addr;
+};
+
+static inline u32 i2o_dma_high(dma_addr_t dma_addr)
+{
+ return (u32) ((u64) dma_addr >> 32);
+};
#else
static inline u32 i2o_cntxt_list_add(struct i2o_controller *c, void *ptr)
{
{
return 0;
};
+
+static inline u32 i2o_dma_low(dma_addr_t dma_addr)
+{
+ return (u32) dma_addr;
+};
+
+static inline u32 i2o_dma_high(dma_addr_t dma_addr)
+{
+ return 0;
+};
+#endif
+
+/**
+ * i2o_sg_tablesize - Calculate the maximum number of elements in a SGL
+ * @c: I2O controller for which the calculation should be done
+ * @body_size: maximum body size used for message in 32-bit words.
+ *
+ * Return the maximum number of SG elements in a SG list.
+ */
+static inline u16 i2o_sg_tablesize(struct i2o_controller *c, u16 body_size)
+{
+ i2o_status_block *sb = c->status_block.virt;
+ u16 sg_count =
+ (sb->inbound_frame_size - sizeof(struct i2o_message) / 4) -
+ body_size;
+
+ if (c->pae_support) {
+ /*
+ * for 64-bit a SG attribute element must be added and each
+ * SG element needs 12 bytes instead of 8.
+ */
+ sg_count -= 2;
+ sg_count /= 3;
+ } else
+ sg_count /= 2;
+
+ if (c->short_req && (sg_count > 8))
+ sg_count = 8;
+
+ return sg_count;
+};
+
+/**
+ * i2o_dma_map_single - Map pointer to controller and fill in I2O message.
+ * @c: I2O controller
+ * @ptr: pointer to the data which should be mapped
+ * @size: size of data in bytes
+ * @direction: DMA_TO_DEVICE / DMA_FROM_DEVICE
+ * @sg_ptr: pointer to the SG list inside the I2O message
+ *
+ * This function does all necessary DMA handling and also writes the I2O
+ * SGL elements into the I2O message. For details on DMA handling see also
+ * dma_map_single(). The pointer sg_ptr will only be set to the end of the
+ * SG list if the allocation was successful.
+ *
+ * Returns DMA address which must be checked for failures using
+ * dma_mapping_error().
+ */
+static inline dma_addr_t i2o_dma_map_single(struct i2o_controller *c, void *ptr,
+ size_t size,
+ enum dma_data_direction direction,
+ u32 __iomem ** sg_ptr)
+{
+ u32 sg_flags;
+ u32 __iomem *mptr = *sg_ptr;
+ dma_addr_t dma_addr;
+
+ switch (direction) {
+ case DMA_TO_DEVICE:
+ sg_flags = 0xd4000000;
+ break;
+ case DMA_FROM_DEVICE:
+ sg_flags = 0xd0000000;
+ break;
+ default:
+ return 0;
+ }
+
+ dma_addr = dma_map_single(&c->pdev->dev, ptr, size, direction);
+ if (!dma_mapping_error(dma_addr)) {
+#ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
+ if ((sizeof(dma_addr_t) > 4) && c->pae_support) {
+ writel(0x7C020002, mptr++);
+ writel(PAGE_SIZE, mptr++);
+ }
+#endif
+
+ writel(sg_flags | size, mptr++);
+ writel(i2o_dma_low(dma_addr), mptr++);
+#ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
+ if ((sizeof(dma_addr_t) > 4) && c->pae_support)
+ writel(i2o_dma_high(dma_addr), mptr++);
+#endif
+ *sg_ptr = mptr;
+ }
+ return dma_addr;
+};
+
+/**
+ * i2o_dma_map_sg - Map a SG List to controller and fill in I2O message.
+ * @c: I2O controller
+ * @sg: SG list to be mapped
+ * @sg_count: number of elements in the SG list
+ * @direction: DMA_TO_DEVICE / DMA_FROM_DEVICE
+ * @sg_ptr: pointer to the SG list inside the I2O message
+ *
+ * This function does all necessary DMA handling and also writes the I2O
+ * SGL elements into the I2O message. For details on DMA handling see also
+ * dma_map_sg(). The pointer sg_ptr will only be set to the end of the SG
+ * list if the allocation was successful.
+ *
+ * Returns 0 on failure or 1 on success.
+ */
+static inline int i2o_dma_map_sg(struct i2o_controller *c,
+ struct scatterlist *sg, int sg_count,
+ enum dma_data_direction direction,
+ u32 __iomem ** sg_ptr)
+{
+ u32 sg_flags;
+ u32 __iomem *mptr = *sg_ptr;
+
+ switch (direction) {
+ case DMA_TO_DEVICE:
+ sg_flags = 0x14000000;
+ break;
+ case DMA_FROM_DEVICE:
+ sg_flags = 0x10000000;
+ break;
+ default:
+ return 0;
+ }
+
+ sg_count = dma_map_sg(&c->pdev->dev, sg, sg_count, direction);
+ if (!sg_count)
+ return 0;
+
+#ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
+ if ((sizeof(dma_addr_t) > 4) && c->pae_support) {
+ writel(0x7C020002, mptr++);
+ writel(PAGE_SIZE, mptr++);
+ }
#endif
+ while (sg_count-- > 0) {
+ if (!sg_count)
+ sg_flags |= 0xC0000000;
+ writel(sg_flags | sg_dma_len(sg), mptr++);
+ writel(i2o_dma_low(sg_dma_address(sg)), mptr++);
+#ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
+ if ((sizeof(dma_addr_t) > 4) && c->pae_support)
+ writel(i2o_dma_high(sg_dma_address(sg)), mptr++);
+#endif
+ sg++;
+ }
+ *sg_ptr = mptr;
+
+ return 1;
+};
+
+/**
+ * i2o_dma_alloc - Allocate DMA memory
+ * @dev: struct device pointer to the PCI device of the I2O controller
+ * @addr: i2o_dma struct which should get the DMA buffer
+ * @len: length of the new DMA memory
+ * @gfp_mask: GFP mask
+ *
+ * Allocate a coherent DMA memory and write the pointers into addr.
+ *
+ * Returns 0 on success or -ENOMEM on failure.
+ */
+static inline int i2o_dma_alloc(struct device *dev, struct i2o_dma *addr,
+ size_t len, unsigned int gfp_mask)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ int dma_64 = 0;
+
+ if ((sizeof(dma_addr_t) > 4) && (pdev->dma_mask == DMA_64BIT_MASK)) {
+ dma_64 = 1;
+ if (pci_set_dma_mask(pdev, DMA_32BIT_MASK))
+ return -ENOMEM;
+ }
+
+ addr->virt = dma_alloc_coherent(dev, len, &addr->phys, gfp_mask);
+
+ if ((sizeof(dma_addr_t) > 4) && dma_64)
+ if (pci_set_dma_mask(pdev, DMA_64BIT_MASK))
+ printk(KERN_WARNING "i2o: unable to set 64-bit DMA");
+
+ if (!addr->virt)
+ return -ENOMEM;
+
+ memset(addr->virt, 0, len);
+ addr->len = len;
+
+ return 0;
+};
+
+/**
+ * i2o_dma_free - Free DMA memory
+ * @dev: struct device pointer to the PCI device of the I2O controller
+ * @addr: i2o_dma struct which contains the DMA buffer
+ *
+ * Free a coherent DMA memory and set virtual address of addr to NULL.
+ */
+static inline void i2o_dma_free(struct device *dev, struct i2o_dma *addr)
+{
+ if (addr->virt) {
+ if (addr->phys)
+ dma_free_coherent(dev, addr->len, addr->virt,
+ addr->phys);
+ else
+ kfree(addr->virt);
+ addr->virt = NULL;
+ }
+};
+
+/**
+ * i2o_dma_realloc - Realloc DMA memory
+ * @dev: struct device pointer to the PCI device of the I2O controller
+ * @addr: pointer to a i2o_dma struct DMA buffer
+ * @len: new length of memory
+ * @gfp_mask: GFP mask
+ *
+ * If there was something allocated in the addr, free it first. If len > 0
+ * than try to allocate it and write the addresses back to the addr
+ * structure. If len == 0 set the virtual address to NULL.
+ *
+ * Returns the 0 on success or negative error code on failure.
+ */
+static inline int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr,
+ size_t len, unsigned int gfp_mask)
+{
+ i2o_dma_free(dev, addr);
+
+ if (len)
+ return i2o_dma_alloc(dev, addr, len, gfp_mask);
+
+ return 0;
+};
+
/* I2O driver (OSM) functions */
extern int i2o_driver_register(struct i2o_driver *);
extern void i2o_driver_unregister(struct i2o_driver *);
/* Exec OSM functions */
extern int i2o_exec_lct_get(struct i2o_controller *);
-/* device / driver conversion functions */
+/* device / driver / kobject conversion functions */
#define to_i2o_driver(drv) container_of(drv,struct i2o_driver, driver)
#define to_i2o_device(dev) container_of(dev, struct i2o_device, device)
#define to_i2o_controller(dev) container_of(dev, struct i2o_controller, device)
+#define kobj_to_i2o_device(kobj) to_i2o_device(container_of(kobj, struct device, kobj))
/**
* i2o_msg_get - obtain an I2O message from the IOP
i2o_controller *c,
u32 m)
{
- BUG_ON(m < c->out_queue.phys
- || m >= c->out_queue.phys + c->out_queue.len);
+ if (unlikely
+ (m < c->out_queue.phys
+ || m >= c->out_queue.phys + c->out_queue.len))
+ return NULL;
return c->out_queue.virt + (m - c->out_queue.phys);
};
}
};
-/**
- * i2o_dma_map - Map the memory to DMA
- * @dev: struct device pointer to the PCI device of the I2O controller
- * @addr: i2o_dma struct which should be mapped
- *
- * Map the memory in addr->virt to coherent DMA memory and write the
- * physical address into addr->phys.
- *
- * Returns 0 on success or -ENOMEM on failure.
- */
-static inline int i2o_dma_map(struct device *dev, struct i2o_dma *addr)
-{
- if (!addr->virt)
- return -EFAULT;
-
- if (!addr->phys)
- addr->phys = dma_map_single(dev, addr->virt, addr->len,
- DMA_BIDIRECTIONAL);
- if (!addr->phys)
- return -ENOMEM;
-
- return 0;
-};
-
-/**
- * i2o_dma_unmap - Unmap the DMA memory
- * @dev: struct device pointer to the PCI device of the I2O controller
- * @addr: i2o_dma struct which should be unmapped
- *
- * Unmap the memory in addr->virt from DMA memory.
- */
-static inline void i2o_dma_unmap(struct device *dev, struct i2o_dma *addr)
-{
- if (!addr->virt)
- return;
-
- if (addr->phys) {
- dma_unmap_single(dev, addr->phys, addr->len, DMA_BIDIRECTIONAL);
- addr->phys = 0;
- }
-};
-
/*
* Endian handling wrapped into the macro - keeps the core code
* cleaner.
#define I2O_CMD_SCSI_ABORT 0x83
#define I2O_CMD_SCSI_BUSRESET 0x27
+/*
+ * Bus Adapter Class
+ */
+#define I2O_CMD_BUS_ADAPTER_RESET 0x85
+#define I2O_CMD_BUS_RESET 0x87
+#define I2O_CMD_BUS_SCAN 0x89
+#define I2O_CMD_BUS_QUIESCE 0x8b
+
/*
* Random Block Storage Class
*/
/* request queue sizes */
#define I2O_MAX_SECTORS 1024
-#define I2O_MAX_SEGMENTS 128
+#define I2O_MAX_PHYS_SEGMENTS MAX_PHYS_SEGMENTS
#define I2O_REQ_MEMPOOL_SIZE 32
projects / linux-2.6-omap-h63xx.git / commitdiff