err = pci_write_config_dword(bus->host_pci, SSB_GPIO_OUT, out);
if (err)
goto err_pci;
- msleep(2);
+ msleep(5);
}
}
sprom[i] = readw(bus->mmio + SSB_SPROM_BASE + (i * 2));
}
+static int sprom_do_write(struct ssb_bus *bus, const u16 *sprom)
+{
+ struct pci_dev *pdev = bus->host_pci;
+ int i, err;
+ u32 spromctl;
+
+ ssb_printk(KERN_NOTICE PFX "Writing SPROM. Do NOT turn off the power! Please stand by...\n");
+ err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl);
+ if (err)
+ goto err_ctlreg;
+ spromctl |= SSB_SPROMCTL_WE;
+ err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl);
+ if (err)
+ goto err_ctlreg;
+ ssb_printk(KERN_NOTICE PFX "[ 0%%");
+ msleep(500);
+ for (i = 0; i < SSB_SPROMSIZE_WORDS; i++) {
+ if (i == SSB_SPROMSIZE_WORDS / 4)
+ ssb_printk("25%%");
+ else if (i == SSB_SPROMSIZE_WORDS / 2)
+ ssb_printk("50%%");
+ else if (i == (SSB_SPROMSIZE_WORDS / 4) * 3)
+ ssb_printk("75%%");
+ else if (i % 2)
+ ssb_printk(".");
+ writew(sprom[i], bus->mmio + SSB_SPROM_BASE + (i * 2));
+ mmiowb();
+ msleep(20);
+ }
+ err = pci_read_config_dword(pdev, SSB_SPROMCTL, &spromctl);
+ if (err)
+ goto err_ctlreg;
+ spromctl &= ~SSB_SPROMCTL_WE;
+ err = pci_write_config_dword(pdev, SSB_SPROMCTL, spromctl);
+ if (err)
+ goto err_ctlreg;
+ msleep(500);
+ ssb_printk("100%% ]\n");
+ ssb_printk(KERN_NOTICE PFX "SPROM written.\n");
+
+ return 0;
+err_ctlreg:
+ ssb_printk(KERN_ERR PFX "Could not access SPROM control register.\n");
+ return err;
+}
+
static void sprom_extract_r1(struct ssb_sprom_r1 *out, const u16 *in)
{
int i;
.write32 = ssb_pci_write32,
};
+static int sprom2hex(const u16 *sprom, char *buf, size_t buf_len)
+{
+ int i, pos = 0;
+
+ for (i = 0; i < SSB_SPROMSIZE_WORDS; i++) {
+ pos += snprintf(buf + pos, buf_len - pos - 1,
+ "%04X", swab16(sprom[i]) & 0xFFFF);
+ }
+ pos += snprintf(buf + pos, buf_len - pos - 1, "\n");
+
+ return pos + 1;
+}
+
+static int hex2sprom(u16 *sprom, const char *dump, size_t len)
+{
+ char tmp[5] = { 0 };
+ int cnt = 0;
+ unsigned long parsed;
+
+ if (len < SSB_SPROMSIZE_BYTES * 2)
+ return -EINVAL;
+
+ while (cnt < SSB_SPROMSIZE_WORDS) {
+ memcpy(tmp, dump, 4);
+ dump += 4;
+ parsed = simple_strtoul(tmp, NULL, 16);
+ sprom[cnt++] = swab16((u16)parsed);
+ }
+
+ return 0;
+}
+
+static ssize_t ssb_pci_attr_sprom_show(struct device *pcidev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
+ struct ssb_bus *bus;
+ u16 *sprom;
+ int err = -ENODEV;
+ ssize_t count = 0;
+
+ bus = ssb_pci_dev_to_bus(pdev);
+ if (!bus)
+ goto out;
+ err = -ENOMEM;
+ sprom = kcalloc(SSB_SPROMSIZE_WORDS, sizeof(u16), GFP_KERNEL);
+ if (!sprom)
+ goto out;
+
+ err = -ERESTARTSYS;
+ if (mutex_lock_interruptible(&bus->pci_sprom_mutex))
+ goto out_kfree;
+ sprom_do_read(bus, sprom);
+ mutex_unlock(&bus->pci_sprom_mutex);
+
+ count = sprom2hex(sprom, buf, PAGE_SIZE);
+ err = 0;
+
+out_kfree:
+ kfree(sprom);
+out:
+ return err ? err : count;
+}
+
+static ssize_t ssb_pci_attr_sprom_store(struct device *pcidev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct pci_dev *pdev = container_of(pcidev, struct pci_dev, dev);
+ struct ssb_bus *bus;
+ u16 *sprom;
+ int res = 0, err = -ENODEV;
+
+ bus = ssb_pci_dev_to_bus(pdev);
+ if (!bus)
+ goto out;
+ err = -ENOMEM;
+ sprom = kcalloc(SSB_SPROMSIZE_WORDS, sizeof(u16), GFP_KERNEL);
+ if (!sprom)
+ goto out;
+ err = hex2sprom(sprom, buf, count);
+ if (err) {
+ err = -EINVAL;
+ goto out_kfree;
+ }
+ err = sprom_check_crc(sprom);
+ if (err) {
+ err = -EINVAL;
+ goto out_kfree;
+ }
+
+ err = -ERESTARTSYS;
+ if (mutex_lock_interruptible(&bus->pci_sprom_mutex))
+ goto out_kfree;
+ err = ssb_devices_freeze(bus);
+ if (err) {
+ ssb_printk(KERN_ERR PFX "SPROM write: Could not freeze all devices\n");
+ goto out_unlock;
+ }
+ res = sprom_do_write(bus, sprom);
+ err = ssb_devices_thaw(bus);
+ if (err)
+ ssb_printk(KERN_ERR PFX "SPROM write: Could not thaw all devices\n");
+out_unlock:
+ mutex_unlock(&bus->pci_sprom_mutex);
+out_kfree:
+ kfree(sprom);
+out:
+ if (res)
+ return res;
+ return err ? err : count;
+}
+
+static DEVICE_ATTR(ssb_sprom, 0600,
+ ssb_pci_attr_sprom_show,
+ ssb_pci_attr_sprom_store);
+
+void ssb_pci_exit(struct ssb_bus *bus)
+{
+ struct pci_dev *pdev;
+
+ if (bus->bustype != SSB_BUSTYPE_PCI)
+ return;
+
+ pdev = bus->host_pci;
+ device_remove_file(&pdev->dev, &dev_attr_ssb_sprom);
+}
+
int ssb_pci_init(struct ssb_bus *bus)
{
+ struct pci_dev *pdev;
+ int err;
+
if (bus->bustype != SSB_BUSTYPE_PCI)
return 0;
- return ssb_pci_sprom_get(bus);
+
+ pdev = bus->host_pci;
+ mutex_init(&bus->pci_sprom_mutex);
+ err = device_create_file(&pdev->dev, &dev_attr_ssb_sprom);
+ if (err)
+ goto out;
+ err = ssb_pci_sprom_get(bus);
+ if (err)
+ goto err_remove_sprom_file;
+
+out:
+ return err;
+err_remove_sprom_file:
+ device_remove_file(&pdev->dev, &dev_attr_ssb_sprom);
+ return err;
}
projects / librecmc / librecmc.git / blobdiff