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https://github.com/FEX-Emu/linux.git
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b43: Add debugfs files for random SHM access
This adds debugfs files for random SHM access. This is needed in order to implement firmware and driver debugging scripts in userspace. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch
John W. Linville
parent
8bd463f4f9
commit
6bbc321a96
@ -74,6 +74,168 @@ struct b43_dfs_file * fops_to_dfs_file(struct b43_wldev *dev,
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} while (0)
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/* The biggest address values for SHM access from the debugfs files. */
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#define B43_MAX_SHM_ROUTING 4
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#define B43_MAX_SHM_ADDR 0xFFFF
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static ssize_t shm16read__read_file(struct b43_wldev *dev,
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char *buf, size_t bufsize)
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{
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ssize_t count = 0;
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unsigned int routing, addr;
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u16 val;
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routing = dev->dfsentry->shm16read_routing_next;
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addr = dev->dfsentry->shm16read_addr_next;
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if ((routing > B43_MAX_SHM_ROUTING) ||
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(addr > B43_MAX_SHM_ADDR))
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return -EDESTADDRREQ;
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val = b43_shm_read16(dev, routing, addr);
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fappend("0x%04X\n", val);
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return count;
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}
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static int shm16read__write_file(struct b43_wldev *dev,
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const char *buf, size_t count)
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{
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unsigned int routing, addr;
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int res;
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res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
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if (res != 2)
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return -EINVAL;
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if (routing > B43_MAX_SHM_ROUTING)
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return -EADDRNOTAVAIL;
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if (addr > B43_MAX_SHM_ADDR)
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return -EADDRNOTAVAIL;
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if (routing == B43_SHM_SHARED) {
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if ((addr % 2) != 0)
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return -EADDRNOTAVAIL;
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}
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dev->dfsentry->shm16read_routing_next = routing;
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dev->dfsentry->shm16read_addr_next = addr;
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return 0;
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}
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static int shm16write__write_file(struct b43_wldev *dev,
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const char *buf, size_t count)
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{
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unsigned int routing, addr, mask, set;
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u16 val;
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int res;
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unsigned long flags;
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res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
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&routing, &addr, &mask, &set);
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if (res != 4)
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return -EINVAL;
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if (routing > B43_MAX_SHM_ROUTING)
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return -EADDRNOTAVAIL;
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if (addr > B43_MAX_SHM_ADDR)
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return -EADDRNOTAVAIL;
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if (routing == B43_SHM_SHARED) {
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if ((addr % 2) != 0)
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return -EADDRNOTAVAIL;
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}
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if ((mask > 0xFFFF) || (set > 0xFFFF))
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return -E2BIG;
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spin_lock_irqsave(&dev->wl->shm_lock, flags);
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if (mask == 0)
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val = 0;
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else
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val = __b43_shm_read16(dev, routing, addr);
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val &= mask;
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val |= set;
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__b43_shm_write16(dev, routing, addr, val);
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spin_unlock_irqrestore(&dev->wl->shm_lock, flags);
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return 0;
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}
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static ssize_t shm32read__read_file(struct b43_wldev *dev,
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char *buf, size_t bufsize)
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{
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ssize_t count = 0;
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unsigned int routing, addr;
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u32 val;
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routing = dev->dfsentry->shm32read_routing_next;
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addr = dev->dfsentry->shm32read_addr_next;
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if ((routing > B43_MAX_SHM_ROUTING) ||
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(addr > B43_MAX_SHM_ADDR))
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return -EDESTADDRREQ;
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val = b43_shm_read32(dev, routing, addr);
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fappend("0x%08X\n", val);
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return count;
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}
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static int shm32read__write_file(struct b43_wldev *dev,
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const char *buf, size_t count)
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{
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unsigned int routing, addr;
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int res;
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res = sscanf(buf, "0x%X 0x%X", &routing, &addr);
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if (res != 2)
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return -EINVAL;
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if (routing > B43_MAX_SHM_ROUTING)
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return -EADDRNOTAVAIL;
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if (addr > B43_MAX_SHM_ADDR)
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return -EADDRNOTAVAIL;
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if (routing == B43_SHM_SHARED) {
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if ((addr % 2) != 0)
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return -EADDRNOTAVAIL;
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}
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dev->dfsentry->shm32read_routing_next = routing;
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dev->dfsentry->shm32read_addr_next = addr;
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return 0;
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}
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static int shm32write__write_file(struct b43_wldev *dev,
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const char *buf, size_t count)
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{
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unsigned int routing, addr, mask, set;
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u32 val;
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int res;
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unsigned long flags;
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res = sscanf(buf, "0x%X 0x%X 0x%X 0x%X",
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&routing, &addr, &mask, &set);
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if (res != 4)
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return -EINVAL;
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if (routing > B43_MAX_SHM_ROUTING)
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return -EADDRNOTAVAIL;
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if (addr > B43_MAX_SHM_ADDR)
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return -EADDRNOTAVAIL;
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if (routing == B43_SHM_SHARED) {
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if ((addr % 2) != 0)
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return -EADDRNOTAVAIL;
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}
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if ((mask > 0xFFFFFFFF) || (set > 0xFFFFFFFF))
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return -E2BIG;
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spin_lock_irqsave(&dev->wl->shm_lock, flags);
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if (mask == 0)
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val = 0;
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else
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val = __b43_shm_read32(dev, routing, addr);
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val &= mask;
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val |= set;
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__b43_shm_write32(dev, routing, addr, val);
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spin_unlock_irqrestore(&dev->wl->shm_lock, flags);
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return 0;
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}
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/* The biggest MMIO address that we allow access to from the debugfs files. */
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#define B43_MAX_MMIO_ACCESS (0xF00 - 1)
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@ -605,6 +767,10 @@ out_unlock:
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.take_irqlock = _take_irqlock, \
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}
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B43_DEBUGFS_FOPS(shm16read, shm16read__read_file, shm16read__write_file, 1);
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B43_DEBUGFS_FOPS(shm16write, NULL, shm16write__write_file, 1);
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B43_DEBUGFS_FOPS(shm32read, shm32read__read_file, shm32read__write_file, 1);
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B43_DEBUGFS_FOPS(shm32write, NULL, shm32write__write_file, 1);
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B43_DEBUGFS_FOPS(mmio16read, mmio16read__read_file, mmio16read__write_file, 1);
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B43_DEBUGFS_FOPS(mmio16write, NULL, mmio16write__write_file, 1);
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B43_DEBUGFS_FOPS(mmio32read, mmio32read__read_file, mmio32read__write_file, 1);
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@ -699,6 +865,10 @@ void b43_debugfs_add_device(struct b43_wldev *dev)
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e->mmio16read_next = 0xFFFF; /* invalid address */
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e->mmio32read_next = 0xFFFF; /* invalid address */
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e->shm16read_routing_next = 0xFFFFFFFF; /* invalid routing */
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e->shm16read_addr_next = 0xFFFFFFFF; /* invalid address */
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e->shm32read_routing_next = 0xFFFFFFFF; /* invalid routing */
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e->shm32read_addr_next = 0xFFFFFFFF; /* invalid address */
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#define ADD_FILE(name, mode) \
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do { \
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@ -712,6 +882,10 @@ void b43_debugfs_add_device(struct b43_wldev *dev)
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} while (0)
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ADD_FILE(shm16read, 0600);
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ADD_FILE(shm16write, 0200);
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ADD_FILE(shm32read, 0600);
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ADD_FILE(shm32write, 0200);
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ADD_FILE(mmio16read, 0600);
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ADD_FILE(mmio16write, 0200);
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ADD_FILE(mmio32read, 0600);
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@ -740,6 +914,10 @@ void b43_debugfs_remove_device(struct b43_wldev *dev)
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return;
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b43_remove_dynamic_debug(dev);
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debugfs_remove(e->file_shm16read.dentry);
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debugfs_remove(e->file_shm16write.dentry);
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debugfs_remove(e->file_shm32read.dentry);
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debugfs_remove(e->file_shm32write.dentry);
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debugfs_remove(e->file_mmio16read.dentry);
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debugfs_remove(e->file_mmio16write.dentry);
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debugfs_remove(e->file_mmio32read.dentry);
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@ -36,6 +36,10 @@ struct b43_dfsentry {
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struct b43_wldev *dev;
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struct dentry *subdir;
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struct b43_dfs_file file_shm16read;
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struct b43_dfs_file file_shm16write;
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struct b43_dfs_file file_shm32read;
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struct b43_dfs_file file_shm32write;
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struct b43_dfs_file file_mmio16read;
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struct b43_dfs_file file_mmio16write;
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struct b43_dfs_file file_mmio32read;
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@ -55,6 +59,13 @@ struct b43_dfsentry {
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/* The cached address for the next mmio32read file read */
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u16 mmio32read_next;
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/* The cached address for the next shm16read file read */
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u32 shm16read_routing_next;
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u32 shm16read_addr_next;
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/* The cached address for the next shm32read file read */
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u32 shm32read_routing_next;
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u32 shm32read_addr_next;
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/* Enabled/Disabled list for the dynamic debugging features. */
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u32 dyn_debug[__B43_NR_DYNDBG];
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/* Dentries for the dynamic debugging entries. */
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@ -373,13 +373,10 @@ static inline void b43_shm_control_word(struct b43_wldev *dev,
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b43_write32(dev, B43_MMIO_SHM_CONTROL, control);
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}
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u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
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u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
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{
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struct b43_wl *wl = dev->wl;
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unsigned long flags;
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u32 ret;
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spin_lock_irqsave(&wl->shm_lock, flags);
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if (routing == B43_SHM_SHARED) {
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B43_WARN_ON(offset & 0x0001);
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if (offset & 0x0003) {
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@ -397,18 +394,26 @@ u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
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b43_shm_control_word(dev, routing, offset);
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ret = b43_read32(dev, B43_MMIO_SHM_DATA);
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out:
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return ret;
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}
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u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset)
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{
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struct b43_wl *wl = dev->wl;
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unsigned long flags;
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u32 ret;
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spin_lock_irqsave(&wl->shm_lock, flags);
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ret = __b43_shm_read32(dev, routing, offset);
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spin_unlock_irqrestore(&wl->shm_lock, flags);
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return ret;
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}
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u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
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u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
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{
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struct b43_wl *wl = dev->wl;
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unsigned long flags;
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u16 ret;
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spin_lock_irqsave(&wl->shm_lock, flags);
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if (routing == B43_SHM_SHARED) {
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B43_WARN_ON(offset & 0x0001);
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if (offset & 0x0003) {
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@ -423,17 +428,24 @@ u16 b43_shm_read16(struct b43_wldev * dev, u16 routing, u16 offset)
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b43_shm_control_word(dev, routing, offset);
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ret = b43_read16(dev, B43_MMIO_SHM_DATA);
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out:
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return ret;
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}
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u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset)
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{
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struct b43_wl *wl = dev->wl;
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unsigned long flags;
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u16 ret;
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spin_lock_irqsave(&wl->shm_lock, flags);
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ret = __b43_shm_read16(dev, routing, offset);
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spin_unlock_irqrestore(&wl->shm_lock, flags);
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return ret;
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}
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void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
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void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
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{
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struct b43_wl *wl = dev->wl;
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unsigned long flags;
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spin_lock_irqsave(&wl->shm_lock, flags);
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if (routing == B43_SHM_SHARED) {
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B43_WARN_ON(offset & 0x0001);
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if (offset & 0x0003) {
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@ -443,35 +455,47 @@ void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
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(value >> 16) & 0xffff);
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b43_shm_control_word(dev, routing, (offset >> 2) + 1);
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b43_write16(dev, B43_MMIO_SHM_DATA, value & 0xffff);
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goto out;
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return;
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}
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offset >>= 2;
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}
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b43_shm_control_word(dev, routing, offset);
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b43_write32(dev, B43_MMIO_SHM_DATA, value);
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out:
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}
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void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value)
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{
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struct b43_wl *wl = dev->wl;
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unsigned long flags;
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spin_lock_irqsave(&wl->shm_lock, flags);
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__b43_shm_write32(dev, routing, offset, value);
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spin_unlock_irqrestore(&wl->shm_lock, flags);
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}
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void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
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{
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if (routing == B43_SHM_SHARED) {
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B43_WARN_ON(offset & 0x0001);
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if (offset & 0x0003) {
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/* Unaligned access */
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b43_shm_control_word(dev, routing, offset >> 2);
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b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
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return;
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}
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offset >>= 2;
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}
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b43_shm_control_word(dev, routing, offset);
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b43_write16(dev, B43_MMIO_SHM_DATA, value);
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}
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void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value)
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{
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struct b43_wl *wl = dev->wl;
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unsigned long flags;
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spin_lock_irqsave(&wl->shm_lock, flags);
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if (routing == B43_SHM_SHARED) {
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B43_WARN_ON(offset & 0x0001);
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if (offset & 0x0003) {
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/* Unaligned access */
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b43_shm_control_word(dev, routing, offset >> 2);
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b43_write16(dev, B43_MMIO_SHM_DATA_UNALIGNED, value);
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goto out;
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}
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offset >>= 2;
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}
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b43_shm_control_word(dev, routing, offset);
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b43_write16(dev, B43_MMIO_SHM_DATA, value);
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out:
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__b43_shm_write16(dev, routing, offset, value);
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spin_unlock_irqrestore(&wl->shm_lock, flags);
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}
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@ -95,9 +95,13 @@ void b43_tsf_read(struct b43_wldev *dev, u64 * tsf);
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void b43_tsf_write(struct b43_wldev *dev, u64 tsf);
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u32 b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset);
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u32 __b43_shm_read32(struct b43_wldev *dev, u16 routing, u16 offset);
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u16 b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset);
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u16 __b43_shm_read16(struct b43_wldev *dev, u16 routing, u16 offset);
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void b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value);
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void __b43_shm_write32(struct b43_wldev *dev, u16 routing, u16 offset, u32 value);
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void b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value);
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void __b43_shm_write16(struct b43_wldev *dev, u16 routing, u16 offset, u16 value);
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u64 b43_hf_read(struct b43_wldev *dev);
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void b43_hf_write(struct b43_wldev *dev, u64 value);
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