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-rw-r--r--driver/Makefile14
-rw-r--r--driver/base.c28
-rw-r--r--driver/base.h3
-rw-r--r--driver/common.h30
-rw-r--r--driver/rdma.c23
-rw-r--r--driver/rdma.h3
6 files changed, 75 insertions, 26 deletions
diff --git a/driver/Makefile b/driver/Makefile
index 0a860bf..8d8ada8 100644
--- a/driver/Makefile
+++ b/driver/Makefile
@@ -4,7 +4,8 @@ obj-m := pciDriver.o
pciDriver-objs := base.o int.o umem.o kmem.o sysfs.o ioctl.o compat.o rdma.o
KERNELDIR ?= /lib/modules/$(shell uname -r)/build
-INSTALLDIR ?= /lib/modules/$(shell uname -r)/kernel/extra
+INSTALLDIR ?= /lib/modules/$(shell uname -r)/extra
+MAININSTALLDIR ?= /lib/modules/$(shell uname -r)/kernel/extra
PWD := $(shell pwd)
EXTRA_CFLAGS += -I$(M)/..
@@ -53,13 +54,18 @@ install:
@mkdir -p $(INSTALLDIR)
@echo "INSTALL $(INSTALLDIR)/pciDriver.ko"
@install -m 755 pciDriver.ko $(INSTALLDIR)
- @echo "INSTALL /usr/include/pciDriver/driver/pciDriver.h"
- @mkdir -p /usr/include/pciDriver/driver
- @install -m 644 pciDriver.h /usr/include/pciDriver/driver
+ @echo "INSTALL $(INSTALLDIR)/pciDriver.symvers"
+ @install -m 644 Module.symvers $(INSTALLDIR)/pciDriver.symvers
+# @echo "INSTALL /usr/include/pciDriver/driver/pciDriver.h"
+# @mkdir -p /usr/include/pciDriver/driver
+# @install -m 644 pciDriver.h /usr/include/pciDriver/driver
uninstall:
@echo "UNINSTALL $(INSTALLDIR)/pciDriver.ko"
@rm -f $(INSTALLDIR)/pciDriver.ko
+ @rm -f $(MAININSTALLDIR)/pciDriver.ko
+ @rm -f $(INSTALLDIR)/pciDriver.symvers
+ @rm -f $(MAININSTALLDIR)/pciDriver.symvers
@echo "UNINSTALL /usr/include/pciDriver/driver/pciDriver.h"
@rm -rf /usr/include/pciDriver/driver
diff --git a/driver/base.c b/driver/base.c
index 4e55dda..dfd82c6 100644
--- a/driver/base.c
+++ b/driver/base.c
@@ -211,7 +211,7 @@ MODULE_LICENSE("GPL v2");
static struct class_compat *pcidriver_class;
#ifdef PCIDRIVER_DUMMY_DEVICE
-pcidriver_privdata_t *pcidriver_privdata = NULL;
+pcidriver_privdata_t *pcidriver_dummydata = NULL;
#endif /* PCIDRIVER_DUMMY_DEVICE */
/**
@@ -225,6 +225,8 @@ static int __init pcidriver_init(void)
/* Initialize the device count */
atomic_set(&pcidriver_deviceCount, 0);
+
+ memset(pcidriver_privdata, 0, sizeof(pcidriver_privdata));
/* Allocate character device region dynamically */
if ((err = alloc_chrdev_region(&pcidriver_devt, MINORNR, MAXDEVICES, NODENAME)) != 0) {
@@ -377,6 +379,8 @@ static int __devinit pcidriver_probe(struct pci_dev *pdev, const struct pci_devi
err = -ENOMEM;
goto probe_nomem;
}
+
+ privdata->devid = devid;
INIT_LIST_HEAD(&(privdata->kmem_list));
spin_lock_init(&(privdata->kmemlist_lock));
@@ -387,7 +391,7 @@ static int __devinit pcidriver_probe(struct pci_dev *pdev, const struct pci_devi
atomic_set(&privdata->umem_count, 0);
#ifdef PCIDRIVER_DUMMY_DEVICE
- pcidriver_privdata = privdata;
+ pcidriver_dummydata = privdata;
#else /* PCIDRIVER_DUMMY_DEVICE */
pci_set_drvdata(pdev, privdata);
privdata->pdev = pdev;
@@ -443,6 +447,8 @@ static int __devinit pcidriver_probe(struct pci_dev *pdev, const struct pci_devi
goto probe_cdevadd_fail;
}
+ pcidriver_privdata[devid] = privdata;
+
return 0;
probe_device_create_fail:
@@ -473,13 +479,16 @@ static void __devexit pcidriver_remove(struct pci_dev *pdev)
pcidriver_privdata_t *privdata;
#ifdef PCIDRIVER_DUMMY_DEVICE
- privdata = pcidriver_privdata;
- pcidriver_privdata = NULL;
+ privdata = pcidriver_dummydata;
+ pcidriver_dummydata = NULL;
#else /* PCIDRIVER_DUMMY_DEVICE */
/* Get private data from the device */
privdata = pci_get_drvdata(pdev);
#endif /* PCIDRIVER_DUMMY_DEVICE */
+ // Theoretically we should lock here and when using...
+ pcidriver_privdata[privdata->devid] = NULL;
+
/* Removing sysfs attributes from class device */
#define sysfs_attr(name) do { \
class_device_remove_file(sysfs_attr_def_pointer, &sysfs_attr_def_name(name)); \
@@ -729,3 +738,14 @@ int pcidriver_mmap_pci(pcidriver_privdata_t *privdata, struct vm_area_struct *vm
return 0; /* success */
#endif /* PCIDRIVER_DUMMY_DEVICE */
}
+
+pcidriver_privdata_t *pcidriver_get_privdata(int devid) {
+ if (devid >= MAXDEVICES)
+ return NULL;
+
+ return pcidriver_privdata[devid];
+}
+
+void pcidriver_put_privdata(pcidriver_privdata_t *privdata) {
+
+}
diff --git a/driver/base.h b/driver/base.h
index 5b977fa..dce865f 100644
--- a/driver/base.h
+++ b/driver/base.h
@@ -69,6 +69,9 @@ static dev_t pcidriver_devt;
/* Number of devices allocated */
static atomic_t pcidriver_deviceCount;
+/* Private data for probed devices */
+static pcidriver_privdata_t* pcidriver_privdata[MAXDEVICES];
+
/* Sysfs attributes */
static DEVICE_ATTR(mmap_mode, 0664, pcidriver_show_mmap_mode, pcidriver_store_mmap_mode);
static DEVICE_ATTR(mmap_area, 0664, pcidriver_show_mmap_area, pcidriver_store_mmap_area);
diff --git a/driver/common.h b/driver/common.h
index 6bc1329..a83fd5e 100644
--- a/driver/common.h
+++ b/driver/common.h
@@ -36,30 +36,28 @@ typedef struct {
struct list_head list;
unsigned int nr_pages; /* number of pages for this user memeory area */
struct page **pages; /* list of pointers to the pages */
- unsigned int nents; /* actual entries in the scatter/gatter list (NOT nents for the map function, but the result) */
+ unsigned int nents; /* actual entries in the scatter/gatter list (NOT nents for the map function, but the result) */
struct scatterlist *sg; /* list of sg entries */
struct class_device_attribute sysfs_attr; /* initialized when adding the entry */
} pcidriver_umem_entry_t;
/* Hold the driver private data */
typedef struct {
- dev_t devno; /* device number (major and minor) */
+ int devid; /* the device id */
+ dev_t devno; /* device number (major and minor) */
struct pci_dev *pdev; /* PCI device */
- struct class_device *class_dev; /* Class device */
- struct cdev cdev; /* char device struct */
- int mmap_mode; /* current mmap mode */
- int mmap_area; /* current PCI mmap area */
+ struct class_device *class_dev; /* Class device */
+ struct cdev cdev; /* char device struct */
+ int mmap_mode; /* current mmap mode */
+ int mmap_area; /* current PCI mmap area */
#ifdef ENABLE_IRQ
- int irq_enabled; /* Non-zero if IRQ is enabled */
- int irq_count; /* Just an IRQ counter */
-
- wait_queue_head_t irq_queues[ PCIDRIVER_INT_MAXSOURCES ];
- /* One queue per interrupt source */
- atomic_t irq_outstanding[ PCIDRIVER_INT_MAXSOURCES ];
- /* Outstanding interrupts per queue */
- volatile unsigned int *bars_kmapped[6]; /* PCI BARs mmapped in kernel space */
+ int irq_enabled; /* Non-zero if IRQ is enabled */
+ int irq_count; /* Just an IRQ counter */
+ wait_queue_head_t irq_queues[ PCIDRIVER_INT_MAXSOURCES ]; /* One queue per interrupt source */
+ atomic_t irq_outstanding[ PCIDRIVER_INT_MAXSOURCES ]; /* Outstanding interrupts per queue */
+ volatile unsigned int *bars_kmapped[6]; /* PCI BARs mmapped in kernel space */
#endif
spinlock_t kmemlist_lock; /* Spinlock to lock kmem list operations */
@@ -81,6 +79,10 @@ typedef struct {
void pcidriver_module_get(pcidriver_privdata_t *privdata);
void pcidriver_module_put(pcidriver_privdata_t *privdata);
+pcidriver_privdata_t *pcidriver_get_privdata(int devid);
+void pcidriver_put_privdata(pcidriver_privdata_t *privdata);
+
+
/*************************************************************************/
/* Some nice defines that make code more readable */
/* This is to print nice info in the log */
diff --git a/driver/rdma.c b/driver/rdma.c
index 22a4a5e..78c6d69 100644
--- a/driver/rdma.c
+++ b/driver/rdma.c
@@ -7,7 +7,12 @@
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/hugetlb.h>
+#include <linux/cdev.h>
+#include "config.h"
+#include "compat.h"
+#include "pciDriver.h"
+#include "common.h"
#include "rdma.h"
static unsigned long pcidriver_follow_pte(struct mm_struct *mm, unsigned long address)
@@ -42,12 +47,28 @@ static unsigned long pcidriver_follow_pte(struct mm_struct *mm, unsigned long ad
}
unsigned long pcidriver_resolve_bar(unsigned long address) {
+ int dev, bar;
unsigned long pfn;
address = (address >> PAGE_SHIFT) << PAGE_SHIFT;
pfn = pcidriver_follow_pte(current->mm, address);
- return pfn;
+ for (dev = 0; dev < MAXDEVICES; dev++)
+ {
+ pcidriver_privdata_t *privdata = pcidriver_get_privdata(dev);
+ if (!privdata) continue;
+
+ for (bar = 0; bar < 6; bar++)
+ {
+ unsigned long start = pci_resource_start(privdata->pdev, bar);
+ unsigned long end = start + pci_resource_len(privdata->pdev, bar);
+ if ((pfn >= start)&&(pfn < end))
+ return pfn;
+ }
+ pcidriver_put_privdata(privdata);
+ }
+
+ return 0;
}
EXPORT_SYMBOL(pcidriver_resolve_bar);
diff --git a/driver/rdma.h b/driver/rdma.h
index 4aeda78..cfe9c83 100644
--- a/driver/rdma.h
+++ b/driver/rdma.h
@@ -1,9 +1,6 @@
#ifndef _PCIDRIVER_RDMA_H
#define _PCIDRIVER_RDMA_H
-#include <linux/mm.h>
-#include <linux/pagemap.h>
-
extern unsigned long pcidriver_resolve_bar(unsigned long address);
#endif /* _PCIDRIVER_RDMA_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 14:10:05 +0000