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author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-28 20:55:08 (GMT) |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-28 20:55:08 (GMT) |
commit | 030ee39c0fef49d7dcd32e71b1ca98fcc23e2a72 (patch) | |
tree | b9e72ed55f0c41984acbc616f934f653296fb937 /drivers | |
parent | 84860bf0644d7c45afe7ddbd30731c3e3c371fae (diff) | |
download | linux-030ee39c0fef49d7dcd32e71b1ca98fcc23e2a72.tar.xz |
pcmcia: add socket register data to sysfs for yenta devices
It's simple, and it's a good debugging aid.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/pcmcia/yenta_socket.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index db9f952..ec6ab65 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -151,6 +151,40 @@ static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) readb(socket->base + 0x800 + reg + 1); } +static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf) +{ + struct pci_dev *dev = to_pci_dev(yentadev); + struct yenta_socket *socket = pci_get_drvdata(dev); + int offset = 0, i; + + offset = snprintf(buf, PAGE_SIZE, "CB registers:"); + for (i = 0; i < 0x24; i += 4) { + unsigned val; + if (!(i & 15)) + offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i); + val = cb_readl(socket, i); + offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val); + } + + offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:"); + for (i = 0; i < 0x45; i++) { + unsigned char val; + if (!(i & 7)) { + if (i & 8) { + memcpy(buf + offset, " -", 2); + offset += 2; + } else + offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i); + } + val = exca_readb(socket, i); + offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val); + } + buf[offset++] = '\n'; + return offset; +} + +static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL); + /* * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend * on what kind of card is inserted.. @@ -765,6 +799,9 @@ static void yenta_close(struct pci_dev *dev) { struct yenta_socket *sock = pci_get_drvdata(dev); + /* Remove the register attributes */ + device_remove_file(&dev->dev, &dev_attr_yenta_registers); + /* we don't want a dying socket registered */ pcmcia_unregister_socket(&sock->socket); @@ -1138,8 +1175,11 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i /* Register it with the pcmcia layer.. */ ret = pcmcia_register_socket(&socket->socket); - if (ret == 0) + if (ret == 0) { + /* Add the yenta register attributes */ + device_create_file(&dev->dev, &dev_attr_yenta_registers); goto out; + } unmap: iounmap(socket->base); |