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@@ -0,0 +1,820 @@
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+/*
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+ * Driver for s390 chsc subchannels
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+ *
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+ * Copyright IBM Corp. 2008
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+ * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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+ *
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+ */
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+
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+#include <linux/device.h>
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+#include <linux/module.h>
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+#include <linux/uaccess.h>
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+#include <linux/miscdevice.h>
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+
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+#include <asm/cio.h>
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+#include <asm/chsc.h>
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+#include <asm/isc.h>
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+
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+#include "cio.h"
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+#include "cio_debug.h"
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+#include "css.h"
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+#include "chsc_sch.h"
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+#include "ioasm.h"
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+
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+static debug_info_t *chsc_debug_msg_id;
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+static debug_info_t *chsc_debug_log_id;
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+
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+#define CHSC_MSG(imp, args...) do { \
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+ debug_sprintf_event(chsc_debug_msg_id, imp , ##args); \
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+ } while (0)
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+
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+#define CHSC_LOG(imp, txt) do { \
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+ debug_text_event(chsc_debug_log_id, imp , txt); \
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+ } while (0)
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+
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+static void CHSC_LOG_HEX(int level, void *data, int length)
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+{
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+ while (length > 0) {
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+ debug_event(chsc_debug_log_id, level, data, length);
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+ length -= chsc_debug_log_id->buf_size;
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+ data += chsc_debug_log_id->buf_size;
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+ }
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+}
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+
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+MODULE_AUTHOR("IBM Corporation");
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+MODULE_DESCRIPTION("driver for s390 chsc subchannels");
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+MODULE_LICENSE("GPL");
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+
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+static void chsc_subchannel_irq(struct subchannel *sch)
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+{
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+ struct chsc_private *private = sch->private;
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+ struct chsc_request *request = private->request;
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+ struct irb *irb = (struct irb *)__LC_IRB;
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+
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+ CHSC_LOG(4, "irb");
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+ CHSC_LOG_HEX(4, irb, sizeof(*irb));
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+ /* Copy irb to provided request and set done. */
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+ if (!request) {
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+ CHSC_MSG(0, "Interrupt on sch 0.%x.%04x with no request\n",
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+ sch->schid.ssid, sch->schid.sch_no);
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+ return;
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+ }
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+ private->request = NULL;
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+ memcpy(&request->irb, irb, sizeof(*irb));
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+ stsch(sch->schid, &sch->schib);
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+ complete(&request->completion);
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+ put_device(&sch->dev);
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+}
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+
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+static int chsc_subchannel_probe(struct subchannel *sch)
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+{
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+ struct chsc_private *private;
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+ int ret;
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+
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+ CHSC_MSG(6, "Detected chsc subchannel 0.%x.%04x\n",
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+ sch->schid.ssid, sch->schid.sch_no);
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+ sch->isc = CHSC_SCH_ISC;
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+ private = kzalloc(sizeof(*private), GFP_KERNEL);
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+ if (!private)
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+ return -ENOMEM;
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+ ret = cio_enable_subchannel(sch, (u32)(unsigned long)sch);
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+ if (ret) {
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+ CHSC_MSG(0, "Failed to enable 0.%x.%04x: %d\n",
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+ sch->schid.ssid, sch->schid.sch_no, ret);
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+ kfree(private);
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+ } else {
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+ sch->private = private;
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+ if (sch->dev.uevent_suppress) {
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+ sch->dev.uevent_suppress = 0;
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+ kobject_uevent(&sch->dev.kobj, KOBJ_ADD);
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+ }
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+ }
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+ return ret;
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+}
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+
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+static int chsc_subchannel_remove(struct subchannel *sch)
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+{
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+ struct chsc_private *private;
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+
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+ cio_disable_subchannel(sch);
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+ private = sch->private;
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+ sch->private = NULL;
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+ if (private->request) {
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+ complete(&private->request->completion);
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+ put_device(&sch->dev);
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+ }
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+ kfree(private);
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+ return 0;
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+}
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+
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+static void chsc_subchannel_shutdown(struct subchannel *sch)
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+{
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+ cio_disable_subchannel(sch);
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+}
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+
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+static struct css_device_id chsc_subchannel_ids[] = {
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+ { .match_flags = 0x1, .type =SUBCHANNEL_TYPE_CHSC, },
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+ { /* end of list */ },
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+};
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+MODULE_DEVICE_TABLE(css, chsc_subchannel_ids);
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+
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+static struct css_driver chsc_subchannel_driver = {
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+ .owner = THIS_MODULE,
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+ .subchannel_type = chsc_subchannel_ids,
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+ .irq = chsc_subchannel_irq,
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+ .probe = chsc_subchannel_probe,
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+ .remove = chsc_subchannel_remove,
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+ .shutdown = chsc_subchannel_shutdown,
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+ .name = "chsc_subchannel",
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+};
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+
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+static int __init chsc_init_dbfs(void)
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+{
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+ chsc_debug_msg_id = debug_register("chsc_msg", 16, 1,
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+ 16 * sizeof(long));
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+ if (!chsc_debug_msg_id)
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+ goto out;
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+ debug_register_view(chsc_debug_msg_id, &debug_sprintf_view);
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+ debug_set_level(chsc_debug_msg_id, 2);
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+ chsc_debug_log_id = debug_register("chsc_log", 16, 1, 16);
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+ if (!chsc_debug_log_id)
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+ goto out;
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+ debug_register_view(chsc_debug_log_id, &debug_hex_ascii_view);
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+ debug_set_level(chsc_debug_log_id, 2);
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+ return 0;
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+out:
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+ if (chsc_debug_msg_id)
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+ debug_unregister(chsc_debug_msg_id);
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+ return -ENOMEM;
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+}
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+
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+static void chsc_remove_dbfs(void)
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+{
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+ debug_unregister(chsc_debug_log_id);
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+ debug_unregister(chsc_debug_msg_id);
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+}
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+
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+static int __init chsc_init_sch_driver(void)
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+{
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+ return css_driver_register(&chsc_subchannel_driver);
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+}
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+
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+static void chsc_cleanup_sch_driver(void)
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+{
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+ css_driver_unregister(&chsc_subchannel_driver);
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+}
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+
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+static DEFINE_SPINLOCK(chsc_lock);
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+
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+static int chsc_subchannel_match_next_free(struct device *dev, void *data)
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+{
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+ struct subchannel *sch = to_subchannel(dev);
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+
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+ return sch->schib.pmcw.ena && !scsw_fctl(&sch->schib.scsw);
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+}
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+
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+static struct subchannel *chsc_get_next_subchannel(struct subchannel *sch)
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+{
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+ struct device *dev;
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+
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+ dev = driver_find_device(&chsc_subchannel_driver.drv,
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+ sch ? &sch->dev : NULL, NULL,
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+ chsc_subchannel_match_next_free);
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+ return dev ? to_subchannel(dev) : NULL;
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+}
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+
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+/**
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+ * chsc_async() - try to start a chsc request asynchronously
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+ * @chsc_area: request to be started
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+ * @request: request structure to associate
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+ *
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+ * Tries to start a chsc request on one of the existing chsc subchannels.
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+ * Returns:
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+ * %0 if the request was performed synchronously
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+ * %-EINPROGRESS if the request was successfully started
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+ * %-EBUSY if all chsc subchannels are busy
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+ * %-ENODEV if no chsc subchannels are available
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+ * Context:
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+ * interrupts disabled, chsc_lock held
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+ */
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+static int chsc_async(struct chsc_async_area *chsc_area,
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+ struct chsc_request *request)
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+{
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+ int cc;
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+ struct chsc_private *private;
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+ struct subchannel *sch = NULL;
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+ int ret = -ENODEV;
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+ char dbf[10];
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+
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+ chsc_area->header.key = PAGE_DEFAULT_KEY;
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+ while ((sch = chsc_get_next_subchannel(sch))) {
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+ spin_lock(sch->lock);
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+ private = sch->private;
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+ if (private->request) {
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+ spin_unlock(sch->lock);
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+ ret = -EBUSY;
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+ continue;
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+ }
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+ chsc_area->header.sid = sch->schid;
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+ CHSC_LOG(2, "schid");
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+ CHSC_LOG_HEX(2, &sch->schid, sizeof(sch->schid));
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+ cc = chsc(chsc_area);
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+ sprintf(dbf, "cc:%d", cc);
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+ CHSC_LOG(2, dbf);
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+ switch (cc) {
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+ case 0:
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+ ret = 0;
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+ break;
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+ case 1:
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+ sch->schib.scsw.cmd.fctl |= SCSW_FCTL_START_FUNC;
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+ ret = -EINPROGRESS;
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+ private->request = request;
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+ break;
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+ case 2:
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+ ret = -EBUSY;
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+ break;
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+ default:
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+ ret = -ENODEV;
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+ }
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+ spin_unlock(sch->lock);
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+ CHSC_MSG(2, "chsc on 0.%x.%04x returned cc=%d\n",
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+ sch->schid.ssid, sch->schid.sch_no, cc);
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+ if (ret == -EINPROGRESS)
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+ return -EINPROGRESS;
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+ put_device(&sch->dev);
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+ if (ret == 0)
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+ return 0;
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+ }
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+ return ret;
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+}
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+
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+static void chsc_log_command(struct chsc_async_area *chsc_area)
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+{
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+ char dbf[10];
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+
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+ sprintf(dbf, "CHSC:%x", chsc_area->header.code);
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+ CHSC_LOG(0, dbf);
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+ CHSC_LOG_HEX(0, chsc_area, 32);
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+}
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+
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+static int chsc_examine_irb(struct chsc_request *request)
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+{
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+ int backed_up;
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+
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+ if (!scsw_stctl(&request->irb.scsw) & SCSW_STCTL_STATUS_PEND)
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+ return -EIO;
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+ backed_up = scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHAIN_CHECK;
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+ request->irb.scsw.cmd.cstat &= ~SCHN_STAT_CHAIN_CHECK;
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+ if (scsw_cstat(&request->irb.scsw) == 0)
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+ return 0;
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+ if (!backed_up)
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+ return 0;
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+ if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_PROG_CHECK)
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+ return -EIO;
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+ if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_PROT_CHECK)
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+ return -EPERM;
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+ if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHN_DATA_CHK)
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+ return -EAGAIN;
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+ if (scsw_cstat(&request->irb.scsw) & SCHN_STAT_CHN_CTRL_CHK)
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+ return -EAGAIN;
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+ return -EIO;
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+}
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+
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+static int chsc_ioctl_start(void __user *user_area)
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+{
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+ struct chsc_request *request;
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+ struct chsc_async_area *chsc_area;
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+ int ret;
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+ char dbf[10];
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+
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+ if (!css_general_characteristics.dynio)
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+ /* It makes no sense to try. */
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+ return -EOPNOTSUPP;
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+ chsc_area = (void *)get_zeroed_page(GFP_DMA | GFP_KERNEL);
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+ if (!chsc_area)
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+ return -ENOMEM;
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+ request = kzalloc(sizeof(*request), GFP_KERNEL);
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+ if (!request) {
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+ ret = -ENOMEM;
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+ goto out_free;
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+ }
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+ init_completion(&request->completion);
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+ if (copy_from_user(chsc_area, user_area, PAGE_SIZE)) {
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+ ret = -EFAULT;
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+ goto out_free;
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+ }
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+ chsc_log_command(chsc_area);
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+ spin_lock_irq(&chsc_lock);
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+ ret = chsc_async(chsc_area, request);
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+ spin_unlock_irq(&chsc_lock);
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+ if (ret == -EINPROGRESS) {
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+ wait_for_completion(&request->completion);
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+ ret = chsc_examine_irb(request);
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+ }
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+ /* copy area back to user */
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+ if (!ret)
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+ if (copy_to_user(user_area, chsc_area, PAGE_SIZE))
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+ ret = -EFAULT;
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+out_free:
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+ sprintf(dbf, "ret:%d", ret);
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+ CHSC_LOG(0, dbf);
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+ kfree(request);
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+ free_page((unsigned long)chsc_area);
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+ return ret;
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+}
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+
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+static int chsc_ioctl_info_channel_path(void __user *user_cd)
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+{
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+ struct chsc_chp_cd *cd;
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+ int ret, ccode;
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+ struct {
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+ struct chsc_header request;
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+ u32 : 2;
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+ u32 m : 1;
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+ u32 : 1;
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+ u32 fmt1 : 4;
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+ u32 cssid : 8;
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+ u32 : 8;
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+ u32 first_chpid : 8;
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+ u32 : 24;
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+ u32 last_chpid : 8;
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+ u32 : 32;
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+ struct chsc_header response;
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+ u8 data[PAGE_SIZE - 20];
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+ } __attribute__ ((packed)) *scpcd_area;
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+
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+ scpcd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
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+ if (!scpcd_area)
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+ return -ENOMEM;
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+ cd = kzalloc(sizeof(*cd), GFP_KERNEL);
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+ if (!cd) {
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+ ret = -ENOMEM;
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+ goto out_free;
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+ }
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+ if (copy_from_user(cd, user_cd, sizeof(*cd))) {
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+ ret = -EFAULT;
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+ goto out_free;
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+ }
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+ scpcd_area->request.length = 0x0010;
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+ scpcd_area->request.code = 0x0028;
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+ scpcd_area->m = cd->m;
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+ scpcd_area->fmt1 = cd->fmt;
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+ scpcd_area->cssid = cd->chpid.cssid;
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+ scpcd_area->first_chpid = cd->chpid.id;
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+ scpcd_area->last_chpid = cd->chpid.id;
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+
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+ ccode = chsc(scpcd_area);
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+ if (ccode != 0) {
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+ ret = -EIO;
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+ goto out_free;
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+ }
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+ if (scpcd_area->response.code != 0x0001) {
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+ ret = -EIO;
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+ CHSC_MSG(0, "scpcd: response code=%x\n",
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+ scpcd_area->response.code);
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+ goto out_free;
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+ }
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+ memcpy(&cd->cpcb, &scpcd_area->response, scpcd_area->response.length);
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+ if (copy_to_user(user_cd, cd, sizeof(*cd)))
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+ ret = -EFAULT;
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+ else
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+ ret = 0;
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+out_free:
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+ kfree(cd);
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+ free_page((unsigned long)scpcd_area);
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+ return ret;
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+}
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+
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+static int chsc_ioctl_info_cu(void __user *user_cd)
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+{
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+ struct chsc_cu_cd *cd;
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+ int ret, ccode;
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+ struct {
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+ struct chsc_header request;
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+ u32 : 2;
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+ u32 m : 1;
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+ u32 : 1;
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+ u32 fmt1 : 4;
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+ u32 cssid : 8;
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+ u32 : 8;
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+ u32 first_cun : 8;
|
|
|
+ u32 : 24;
|
|
|
+ u32 last_cun : 8;
|
|
|
+ u32 : 32;
|
|
|
+ struct chsc_header response;
|
|
|
+ u8 data[PAGE_SIZE - 20];
|
|
|
+ } __attribute__ ((packed)) *scucd_area;
|
|
|
+
|
|
|
+ scucd_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
|
|
|
+ if (!scucd_area)
|
|
|
+ return -ENOMEM;
|
|
|
+ cd = kzalloc(sizeof(*cd), GFP_KERNEL);
|
|
|
+ if (!cd) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (copy_from_user(cd, user_cd, sizeof(*cd))) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ scucd_area->request.length = 0x0010;
|
|
|
+ scucd_area->request.code = 0x0028;
|
|
|
+ scucd_area->m = cd->m;
|
|
|
+ scucd_area->fmt1 = cd->fmt;
|
|
|
+ scucd_area->cssid = cd->cssid;
|
|
|
+ scucd_area->first_cun = cd->cun;
|
|
|
+ scucd_area->last_cun = cd->cun;
|
|
|
+
|
|
|
+ ccode = chsc(scucd_area);
|
|
|
+ if (ccode != 0) {
|
|
|
+ ret = -EIO;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (scucd_area->response.code != 0x0001) {
|
|
|
+ ret = -EIO;
|
|
|
+ CHSC_MSG(0, "scucd: response code=%x\n",
|
|
|
+ scucd_area->response.code);
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ memcpy(&cd->cucb, &scucd_area->response, scucd_area->response.length);
|
|
|
+ if (copy_to_user(user_cd, cd, sizeof(*cd)))
|
|
|
+ ret = -EFAULT;
|
|
|
+ else
|
|
|
+ ret = 0;
|
|
|
+out_free:
|
|
|
+ kfree(cd);
|
|
|
+ free_page((unsigned long)scucd_area);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int chsc_ioctl_info_sch_cu(void __user *user_cud)
|
|
|
+{
|
|
|
+ struct chsc_sch_cud *cud;
|
|
|
+ int ret, ccode;
|
|
|
+ struct {
|
|
|
+ struct chsc_header request;
|
|
|
+ u32 : 2;
|
|
|
+ u32 m : 1;
|
|
|
+ u32 : 5;
|
|
|
+ u32 fmt1 : 4;
|
|
|
+ u32 : 2;
|
|
|
+ u32 ssid : 2;
|
|
|
+ u32 first_sch : 16;
|
|
|
+ u32 : 8;
|
|
|
+ u32 cssid : 8;
|
|
|
+ u32 last_sch : 16;
|
|
|
+ u32 : 32;
|
|
|
+ struct chsc_header response;
|
|
|
+ u8 data[PAGE_SIZE - 20];
|
|
|
+ } __attribute__ ((packed)) *sscud_area;
|
|
|
+
|
|
|
+ sscud_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
|
|
|
+ if (!sscud_area)
|
|
|
+ return -ENOMEM;
|
|
|
+ cud = kzalloc(sizeof(*cud), GFP_KERNEL);
|
|
|
+ if (!cud) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (copy_from_user(cud, user_cud, sizeof(*cud))) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ sscud_area->request.length = 0x0010;
|
|
|
+ sscud_area->request.code = 0x0006;
|
|
|
+ sscud_area->m = cud->schid.m;
|
|
|
+ sscud_area->fmt1 = cud->fmt;
|
|
|
+ sscud_area->ssid = cud->schid.ssid;
|
|
|
+ sscud_area->first_sch = cud->schid.sch_no;
|
|
|
+ sscud_area->cssid = cud->schid.cssid;
|
|
|
+ sscud_area->last_sch = cud->schid.sch_no;
|
|
|
+
|
|
|
+ ccode = chsc(sscud_area);
|
|
|
+ if (ccode != 0) {
|
|
|
+ ret = -EIO;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (sscud_area->response.code != 0x0001) {
|
|
|
+ ret = -EIO;
|
|
|
+ CHSC_MSG(0, "sscud: response code=%x\n",
|
|
|
+ sscud_area->response.code);
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ memcpy(&cud->scub, &sscud_area->response, sscud_area->response.length);
|
|
|
+ if (copy_to_user(user_cud, cud, sizeof(*cud)))
|
|
|
+ ret = -EFAULT;
|
|
|
+ else
|
|
|
+ ret = 0;
|
|
|
+out_free:
|
|
|
+ kfree(cud);
|
|
|
+ free_page((unsigned long)sscud_area);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int chsc_ioctl_conf_info(void __user *user_ci)
|
|
|
+{
|
|
|
+ struct chsc_conf_info *ci;
|
|
|
+ int ret, ccode;
|
|
|
+ struct {
|
|
|
+ struct chsc_header request;
|
|
|
+ u32 : 2;
|
|
|
+ u32 m : 1;
|
|
|
+ u32 : 1;
|
|
|
+ u32 fmt1 : 4;
|
|
|
+ u32 cssid : 8;
|
|
|
+ u32 : 6;
|
|
|
+ u32 ssid : 2;
|
|
|
+ u32 : 8;
|
|
|
+ u64 : 64;
|
|
|
+ struct chsc_header response;
|
|
|
+ u8 data[PAGE_SIZE - 20];
|
|
|
+ } __attribute__ ((packed)) *sci_area;
|
|
|
+
|
|
|
+ sci_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
|
|
|
+ if (!sci_area)
|
|
|
+ return -ENOMEM;
|
|
|
+ ci = kzalloc(sizeof(*ci), GFP_KERNEL);
|
|
|
+ if (!ci) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (copy_from_user(ci, user_ci, sizeof(*ci))) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ sci_area->request.length = 0x0010;
|
|
|
+ sci_area->request.code = 0x0012;
|
|
|
+ sci_area->m = ci->id.m;
|
|
|
+ sci_area->fmt1 = ci->fmt;
|
|
|
+ sci_area->cssid = ci->id.cssid;
|
|
|
+ sci_area->ssid = ci->id.ssid;
|
|
|
+
|
|
|
+ ccode = chsc(sci_area);
|
|
|
+ if (ccode != 0) {
|
|
|
+ ret = -EIO;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (sci_area->response.code != 0x0001) {
|
|
|
+ ret = -EIO;
|
|
|
+ CHSC_MSG(0, "sci: response code=%x\n",
|
|
|
+ sci_area->response.code);
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ memcpy(&ci->scid, &sci_area->response, sci_area->response.length);
|
|
|
+ if (copy_to_user(user_ci, ci, sizeof(*ci)))
|
|
|
+ ret = -EFAULT;
|
|
|
+ else
|
|
|
+ ret = 0;
|
|
|
+out_free:
|
|
|
+ kfree(ci);
|
|
|
+ free_page((unsigned long)sci_area);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int chsc_ioctl_conf_comp_list(void __user *user_ccl)
|
|
|
+{
|
|
|
+ struct chsc_comp_list *ccl;
|
|
|
+ int ret, ccode;
|
|
|
+ struct {
|
|
|
+ struct chsc_header request;
|
|
|
+ u32 ctype : 8;
|
|
|
+ u32 : 4;
|
|
|
+ u32 fmt : 4;
|
|
|
+ u32 : 16;
|
|
|
+ u64 : 64;
|
|
|
+ u32 list_parm[2];
|
|
|
+ u64 : 64;
|
|
|
+ struct chsc_header response;
|
|
|
+ u8 data[PAGE_SIZE - 36];
|
|
|
+ } __attribute__ ((packed)) *sccl_area;
|
|
|
+ struct {
|
|
|
+ u32 m : 1;
|
|
|
+ u32 : 31;
|
|
|
+ u32 cssid : 8;
|
|
|
+ u32 : 16;
|
|
|
+ u32 chpid : 8;
|
|
|
+ } __attribute__ ((packed)) *chpid_parm;
|
|
|
+ struct {
|
|
|
+ u32 f_cssid : 8;
|
|
|
+ u32 l_cssid : 8;
|
|
|
+ u32 : 16;
|
|
|
+ u32 res;
|
|
|
+ } __attribute__ ((packed)) *cssids_parm;
|
|
|
+
|
|
|
+ sccl_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
|
|
|
+ if (!sccl_area)
|
|
|
+ return -ENOMEM;
|
|
|
+ ccl = kzalloc(sizeof(*ccl), GFP_KERNEL);
|
|
|
+ if (!ccl) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (copy_from_user(ccl, user_ccl, sizeof(*ccl))) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ sccl_area->request.length = 0x0020;
|
|
|
+ sccl_area->request.code = 0x0030;
|
|
|
+ sccl_area->fmt = ccl->req.fmt;
|
|
|
+ sccl_area->ctype = ccl->req.ctype;
|
|
|
+ switch (sccl_area->ctype) {
|
|
|
+ case CCL_CU_ON_CHP:
|
|
|
+ case CCL_IOP_CHP:
|
|
|
+ chpid_parm = (void *)&sccl_area->list_parm;
|
|
|
+ chpid_parm->m = ccl->req.chpid.m;
|
|
|
+ chpid_parm->cssid = ccl->req.chpid.chp.cssid;
|
|
|
+ chpid_parm->chpid = ccl->req.chpid.chp.id;
|
|
|
+ break;
|
|
|
+ case CCL_CSS_IMG:
|
|
|
+ case CCL_CSS_IMG_CONF_CHAR:
|
|
|
+ cssids_parm = (void *)&sccl_area->list_parm;
|
|
|
+ cssids_parm->f_cssid = ccl->req.cssids.f_cssid;
|
|
|
+ cssids_parm->l_cssid = ccl->req.cssids.l_cssid;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ ccode = chsc(sccl_area);
|
|
|
+ if (ccode != 0) {
|
|
|
+ ret = -EIO;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (sccl_area->response.code != 0x0001) {
|
|
|
+ ret = -EIO;
|
|
|
+ CHSC_MSG(0, "sccl: response code=%x\n",
|
|
|
+ sccl_area->response.code);
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ memcpy(&ccl->sccl, &sccl_area->response, sccl_area->response.length);
|
|
|
+ if (copy_to_user(user_ccl, ccl, sizeof(*ccl)))
|
|
|
+ ret = -EFAULT;
|
|
|
+ else
|
|
|
+ ret = 0;
|
|
|
+out_free:
|
|
|
+ kfree(ccl);
|
|
|
+ free_page((unsigned long)sccl_area);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int chsc_ioctl_chpd(void __user *user_chpd)
|
|
|
+{
|
|
|
+ struct chsc_cpd_info *chpd;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ chpd = kzalloc(sizeof(*chpd), GFP_KERNEL);
|
|
|
+ if (!chpd)
|
|
|
+ return -ENOMEM;
|
|
|
+ if (copy_from_user(chpd, user_chpd, sizeof(*chpd))) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ ret = chsc_determine_channel_path_desc(chpd->chpid, chpd->fmt,
|
|
|
+ chpd->rfmt, chpd->c, chpd->m,
|
|
|
+ &chpd->chpdb);
|
|
|
+ if (ret)
|
|
|
+ goto out_free;
|
|
|
+ if (copy_to_user(user_chpd, chpd, sizeof(*chpd)))
|
|
|
+ ret = -EFAULT;
|
|
|
+out_free:
|
|
|
+ kfree(chpd);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int chsc_ioctl_dcal(void __user *user_dcal)
|
|
|
+{
|
|
|
+ struct chsc_dcal *dcal;
|
|
|
+ int ret, ccode;
|
|
|
+ struct {
|
|
|
+ struct chsc_header request;
|
|
|
+ u32 atype : 8;
|
|
|
+ u32 : 4;
|
|
|
+ u32 fmt : 4;
|
|
|
+ u32 : 16;
|
|
|
+ u32 res0[2];
|
|
|
+ u32 list_parm[2];
|
|
|
+ u32 res1[2];
|
|
|
+ struct chsc_header response;
|
|
|
+ u8 data[PAGE_SIZE - 36];
|
|
|
+ } __attribute__ ((packed)) *sdcal_area;
|
|
|
+
|
|
|
+ sdcal_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
|
|
|
+ if (!sdcal_area)
|
|
|
+ return -ENOMEM;
|
|
|
+ dcal = kzalloc(sizeof(*dcal), GFP_KERNEL);
|
|
|
+ if (!dcal) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (copy_from_user(dcal, user_dcal, sizeof(*dcal))) {
|
|
|
+ ret = -EFAULT;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ sdcal_area->request.length = 0x0020;
|
|
|
+ sdcal_area->request.code = 0x0034;
|
|
|
+ sdcal_area->atype = dcal->req.atype;
|
|
|
+ sdcal_area->fmt = dcal->req.fmt;
|
|
|
+ memcpy(&sdcal_area->list_parm, &dcal->req.list_parm,
|
|
|
+ sizeof(sdcal_area->list_parm));
|
|
|
+
|
|
|
+ ccode = chsc(sdcal_area);
|
|
|
+ if (ccode != 0) {
|
|
|
+ ret = -EIO;
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ if (sdcal_area->response.code != 0x0001) {
|
|
|
+ ret = -EIO;
|
|
|
+ CHSC_MSG(0, "sdcal: response code=%x\n",
|
|
|
+ sdcal_area->response.code);
|
|
|
+ goto out_free;
|
|
|
+ }
|
|
|
+ memcpy(&dcal->sdcal, &sdcal_area->response,
|
|
|
+ sdcal_area->response.length);
|
|
|
+ if (copy_to_user(user_dcal, dcal, sizeof(*dcal)))
|
|
|
+ ret = -EFAULT;
|
|
|
+ else
|
|
|
+ ret = 0;
|
|
|
+out_free:
|
|
|
+ kfree(dcal);
|
|
|
+ free_page((unsigned long)sdcal_area);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static long chsc_ioctl(struct file *filp, unsigned int cmd,
|
|
|
+ unsigned long arg)
|
|
|
+{
|
|
|
+ CHSC_MSG(2, "chsc_ioctl called, cmd=%x\n", cmd);
|
|
|
+ switch (cmd) {
|
|
|
+ case CHSC_START:
|
|
|
+ return chsc_ioctl_start((void __user *)arg);
|
|
|
+ case CHSC_INFO_CHANNEL_PATH:
|
|
|
+ return chsc_ioctl_info_channel_path((void __user *)arg);
|
|
|
+ case CHSC_INFO_CU:
|
|
|
+ return chsc_ioctl_info_cu((void __user *)arg);
|
|
|
+ case CHSC_INFO_SCH_CU:
|
|
|
+ return chsc_ioctl_info_sch_cu((void __user *)arg);
|
|
|
+ case CHSC_INFO_CI:
|
|
|
+ return chsc_ioctl_conf_info((void __user *)arg);
|
|
|
+ case CHSC_INFO_CCL:
|
|
|
+ return chsc_ioctl_conf_comp_list((void __user *)arg);
|
|
|
+ case CHSC_INFO_CPD:
|
|
|
+ return chsc_ioctl_chpd((void __user *)arg);
|
|
|
+ case CHSC_INFO_DCAL:
|
|
|
+ return chsc_ioctl_dcal((void __user *)arg);
|
|
|
+ default: /* unknown ioctl number */
|
|
|
+ return -ENOIOCTLCMD;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static const struct file_operations chsc_fops = {
|
|
|
+ .owner = THIS_MODULE,
|
|
|
+ .unlocked_ioctl = chsc_ioctl,
|
|
|
+ .compat_ioctl = chsc_ioctl,
|
|
|
+};
|
|
|
+
|
|
|
+static struct miscdevice chsc_misc_device = {
|
|
|
+ .minor = MISC_DYNAMIC_MINOR,
|
|
|
+ .name = "chsc",
|
|
|
+ .fops = &chsc_fops,
|
|
|
+};
|
|
|
+
|
|
|
+static int __init chsc_misc_init(void)
|
|
|
+{
|
|
|
+ return misc_register(&chsc_misc_device);
|
|
|
+}
|
|
|
+
|
|
|
+static void chsc_misc_cleanup(void)
|
|
|
+{
|
|
|
+ misc_deregister(&chsc_misc_device);
|
|
|
+}
|
|
|
+
|
|
|
+static int __init chsc_sch_init(void)
|
|
|
+{
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = chsc_init_dbfs();
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+ isc_register(CHSC_SCH_ISC);
|
|
|
+ ret = chsc_init_sch_driver();
|
|
|
+ if (ret)
|
|
|
+ goto out_dbf;
|
|
|
+ ret = chsc_misc_init();
|
|
|
+ if (ret)
|
|
|
+ goto out_driver;
|
|
|
+ return ret;
|
|
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+out_driver:
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|
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+ chsc_cleanup_sch_driver();
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|
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+out_dbf:
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|
|
+ isc_unregister(CHSC_SCH_ISC);
|
|
|
+ chsc_remove_dbfs();
|
|
|
+ return ret;
|
|
|
+}
|
|
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+
|
|
|
+static void __exit chsc_sch_exit(void)
|
|
|
+{
|
|
|
+ chsc_misc_cleanup();
|
|
|
+ chsc_cleanup_sch_driver();
|
|
|
+ isc_unregister(CHSC_SCH_ISC);
|
|
|
+ chsc_remove_dbfs();
|
|
|
+}
|
|
|
+
|
|
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+module_init(chsc_sch_init);
|
|
|
+module_exit(chsc_sch_exit);
|
Cornelia Huck