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authorDaniel Drake <dsd@gentoo.org>2007-07-01 13:22:32 -0400
committerJohn W. Linville <linville@tuxdriver.com>2007-07-10 14:14:56 -0400
commit74553aedd46b3a2cae986f909cf2a3f99369decc (patch)
tree6904945b36c017c58249b1900fbbd531f3286e49 /drivers/net/wireless/zd1211rw/zd_usb.h
parent93f510bbac64f552ef6872a39ae12afa06c4e999 (diff)
[PATCH] zd1211rw: Defer firmware load until first ifup
While playing with the firmware a while back, I discovered a way to access the device's entire address space before the firmware has been loaded. Previously we were loading the firmware early on (during probe) so that we could read the MAC address from the EEPROM and register a netdevice. Now that we can read the EEPROM without having firmware, we can defer firmware loading until later while still reading the MAC address early on. This has the advantage that zd1211rw can now be built into the kernel -- previously if this was the case, zd1211rw would be loaded before the filesystem is available and firmware loading would fail. Firmware load and other device initialization operations now happen the first time the interface is brought up. Some architectural changes were needed: handling of the is_zd1211b flag was moved into the zd_usb structure, MAC address handling was obviously changed, and a preinit_hw stage was added (the order is now: init, preinit_hw, init_hw). Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/zd1211rw/zd_usb.h')
-rw-r--r--drivers/net/wireless/zd1211rw/zd_usb.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/zd1211rw/zd_usb.h b/drivers/net/wireless/zd1211rw/zd_usb.h
index 506ea6a74393..961a7a12ad68 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.h
+++ b/drivers/net/wireless/zd1211rw/zd_usb.h
@@ -188,6 +188,7 @@ struct zd_usb {
188 struct zd_usb_rx rx; 188 struct zd_usb_rx rx;
189 struct zd_usb_tx tx; 189 struct zd_usb_tx tx;
190 struct usb_interface *intf; 190 struct usb_interface *intf;
191 u8 is_zd1211b:1, initialized:1;
191}; 192};
192 193
193#define zd_usb_dev(usb) (&usb->intf->dev) 194#define zd_usb_dev(usb) (&usb->intf->dev)
@@ -236,6 +237,8 @@ int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
236 237
237int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits); 238int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits);
238 239
240int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len);
241
239extern struct workqueue_struct *zd_workqueue; 242extern struct workqueue_struct *zd_workqueue;
240 243
241#endif /* _ZD_USB_H */ 244#endif /* _ZD_USB_H */