/*
*
* edac_pci_create_sysfs
*
* Create the controls/attributes for the specified EDAC PCI device
*/
int edac_pci_create_sysfs(struct edac_pci_ctl_info *pci)
{
int err;
struct kobject *edac_kobj = &pci->kobj;
debugf0("%s() idx=%d\n", __func__, pci->pci_idx);
/* create the top main EDAC PCI kobject, IF needed */
err = edac_pci_main_kobj_setup();
if (err)
return err;
/* Create this instance's kobject under the MAIN kobject */
err = edac_pci_create_instance_kobj(pci, pci->pci_idx);
if (err)
goto unregister_cleanup;
err = sysfs_create_link(edac_kobj, &pci->dev->kobj, EDAC_PCI_SYMLINK);
if (err) {
debugf0("%s() sysfs_create_link() returned err= %d\n",
__func__, err);
goto symlink_fail;
}
return 0;
/* Error unwind stack */
symlink_fail:
edac_pci_unregister_sysfs_instance_kobj(pci);
unregister_cleanup:
edac_pci_main_kobj_teardown();
return err;
}
/*
* edac_device_create_sysfs() Constructor
*
* accept a created edac_device control structure
* and 'export' it to sysfs. The 'main' kobj should already have been
* created. 'instance' and 'block' kobjects should be registered
* along with any 'block' attributes from the low driver. In addition,
* the main attributes (if any) are connected to the main kobject of
* the control structure.
*
* Return:
* 0 Success
* !0 Failure
*/
int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
{
int err;
struct kobject *edac_kobj = &edac_dev->kobj;
debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
/* go create any main attributes callers wants */
err = edac_device_add_main_sysfs_attributes(edac_dev);
if (err) {
debugf0("%s() failed to add sysfs attribs\n", __func__);
goto err_out;
}
/* create a symlink from the edac device
* to the platform 'device' being used for this
*/
err = sysfs_create_link(edac_kobj,
&edac_dev->dev->kobj, EDAC_DEVICE_SYMLINK);
if (err) {
debugf0("%s() sysfs_create_link() returned err= %d\n",
__func__, err);
goto err_remove_main_attribs;
}
/* Create the first level instance directories
* In turn, the nested blocks beneath the instances will
* be registered as well
*/
err = edac_device_create_instances(edac_dev);
if (err) {
debugf0("%s() edac_device_create_instances() "
"returned err= %d\n", __func__, err);
goto err_remove_link;
}
debugf4("%s() create-instances done, idx=%d\n",
__func__, edac_dev->dev_idx);
return 0;
/* Error unwind stack */
err_remove_link:
/* remove the sym link */
sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
err_remove_main_attribs:
edac_device_remove_main_sysfs_attributes(edac_dev);
err_out:
return err;
}
static int how_many_channels(struct pci_dev *pdev)
{
unsigned char capid0_8b;
pci_read_config_byte(pdev, I3200_CAPID0 + 8, &capid0_8b);
if (capid0_8b & 0x20) {
debugf0("In single channel mode.\n");
return 1;
} else {
debugf0("In dual channel mode.\n");
return 2;
}
}
static int how_many_channels(struct pci_dev *pdev)
{
unsigned char capid0_8b; /* 8th byte of CAPID0 */
pci_read_config_byte(pdev, I3200_CAPID0 + 8, &capid0_8b);
if (capid0_8b & 0x20) { /* check DCD: Dual Channel Disable */
debugf0("In single channel mode.\n");
return 1;
} else {
debugf0("In dual channel mode.\n");
return 2;
}
}
/*
* edac_pci_main_kobj_teardown()
*
* if no longer linked (needed) remove the top level EDAC PCI
* kobject with its controls and attributes
*/
static void edac_pci_main_kobj_teardown(void)
{
debugf0("%s()\n", __func__);
/* Decrement the count and only if no more controller instances
* are connected perform the unregisteration of the top level
* main kobj
*/
if (atomic_dec_return(&edac_pci_sysfs_refcount) == 0) {
debugf0("%s() called kobject_put on main kobj\n",
__func__);
kobject_put(edac_pci_top_main_kobj);
}
}
/*
* Do a DRAM ECC write. Assemble staged values in the pvt area and format into
* fields needed by the injection registers.
*/
static ssize_t amd64_inject_write_store(struct mem_ctl_info *mci,
const char *data, size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
u32 section, word_bits;
int ret = 0;
ret = strict_strtoul(data, 10, &value);
if (ret != -EINVAL) {
/* Form value to choose 16-byte section of cacheline */
section = F10_NB_ARRAY_DRAM_ECC |
SET_NB_ARRAY_ADDRESS(pvt->injection.section);
pci_write_config_dword(pvt->misc_f3_ctl,
F10_NB_ARRAY_ADDR, section);
word_bits = SET_NB_DRAM_INJECTION_WRITE(pvt->injection.word,
pvt->injection.bit_map);
/* Issue 'word' and 'bit' along with the READ request */
pci_write_config_dword(pvt->misc_f3_ctl,
F10_NB_ARRAY_DATA, word_bits);
debugf0("section=0x%x word_bits=0x%x\n", section, word_bits);
return count;
}
return ret;
}
static void edac_sysfs_pci_teardown(void)
{
debugf0("%s()\n", __func__);
init_completion(&edac_pci_kobj_complete);
kobject_unregister(&edac_pci_kobj);
wait_for_completion(&edac_pci_kobj_complete);
}
/*
* edac_pci_remove_sysfs
*
* remove the controls and attributes for this EDAC PCI device
*/
void edac_pci_remove_sysfs(struct edac_pci_ctl_info *pci)
{
debugf0("%s() index=%d\n", __func__, pci->pci_idx);
/* Remove the symlink */
sysfs_remove_link(&pci->kobj, EDAC_PCI_SYMLINK);
/* remove this PCI instance's sysfs entries */
edac_pci_unregister_sysfs_instance_kobj(pci);
/* Call the main unregister function, which will determine
* if this 'pci' is the last instance.
* If it is, the main kobject will be unregistered as a result
*/
debugf0("%s() calling edac_pci_main_kobj_teardown()\n", __func__);
edac_pci_main_kobj_teardown();
}
/* returns count (>= 0), or negative on error */
static int __devinit r82600_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
debugf0("%s()\n", __func__);
/* don't need to call pci_enable_device() */
return r82600_probe1(pdev, ent->driver_data);
}
/*
* edac_exit()
* module exit/termination function
*/
static void __exit edac_exit(void)
{
debugf0("%s()\n", __func__);
/* tear down the various subsystems */
edac_workqueue_teardown();
edac_sysfs_teardown_mc_kset();
}
int edac_device_create_sysfs(struct edac_device_ctl_info *edac_dev)
{
int err;
struct kobject *edac_kobj = &edac_dev->kobj;
debugf0("%s() idx=%d\n", __func__, edac_dev->dev_idx);
err = edac_device_add_main_sysfs_attributes(edac_dev);
if (err) {
debugf0("%s() failed to add sysfs attribs\n", __func__);
goto err_out;
}
err = sysfs_create_link(edac_kobj,
&edac_dev->dev->kobj, EDAC_DEVICE_SYMLINK);
if (err) {
debugf0("%s() sysfs_create_link() returned err= %d\n",
__func__, err);
goto err_remove_main_attribs;
}
err = edac_device_create_instances(edac_dev);
if (err) {
debugf0("%s() edac_device_create_instances() "
"returned err= %d\n", __func__, err);
goto err_remove_link;
}
debugf4("%s() create-instances done, idx=%d\n",
__func__, edac_dev->dev_idx);
return 0;
err_remove_link:
sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
err_remove_main_attribs:
edac_device_remove_main_sysfs_attributes(edac_dev);
err_out:
return err;
}
void edac_device_unregister_sysfs_main_kobj(struct edac_device_ctl_info *dev)
{
debugf0("%s()\n", __func__);
debugf4("%s() name of kobject is: %s\n",
__func__, kobject_name(&dev->kobj));
kobject_put(&dev->kobj);
edac_put_sysfs_subsys();
}
/*
* edac_pci_unregister_sysfs_instance_kobj
*
* unregister the kobj for the EDAC PCI instance
*/
static void edac_pci_unregister_sysfs_instance_kobj(
struct edac_pci_ctl_info *pci)
{
debugf0("%s()\n", __func__);
/* Unregister the instance kobject and allow its release
* function release the main reference count and then
* kfree the memory
*/
kobject_put(&pci->kobj);
}
/*
* edac_pci_release_main_kobj
*
* This release function is called when the reference count to the
* passed kobj goes to zero.
*
* This kobj is the 'main' kobject that EDAC PCI instances
* link to, and thus provide for proper nesting counts
*/
static void edac_pci_release_main_kobj(struct kobject *kobj)
{
debugf0("%s() here to module_put(THIS_MODULE)\n", __func__);
kfree(kobj);
/* last reference to top EDAC PCI kobject has been removed,
* NOW release our ref count on the core module
*/
module_put(THIS_MODULE);
}
static void __devexit r82600_remove_one(struct pci_dev *pdev)
{
struct mem_ctl_info *mci;
debugf0("%s()\n", __func__);
if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
return;
edac_mc_free(mci);
}
/*
* edac_device_remove_sysfs() destructor
*
* given an edac_device struct, tear down the kobject resources
*/
void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
{
debugf0("%s()\n", __func__);
/* remove any main attributes for this device */
edac_device_remove_main_sysfs_attributes(edac_dev);
/* remove the device sym link */
sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
/* walk the instance/block kobject tree, deconstructing it */
edac_device_delete_instances(edac_dev);
}
void edac_device_remove_sysfs(struct edac_device_ctl_info *edac_dev)
{
debugf0("%s()\n", __func__);
edac_device_remove_main_sysfs_attributes(edac_dev);
sysfs_remove_link(&edac_dev->kobj, EDAC_DEVICE_SYMLINK);
edac_device_delete_instances(edac_dev);
}
static int __init i3000_init(void)
{
int pci_rc;
debugf3("MC: %s()\n", __func__);
pci_rc = pci_register_driver(&i3000_driver);
if (pci_rc < 0)
goto fail0;
if (mci_pdev == NULL) {
i3000_registered = 0;
mci_pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_3000_HB, NULL);
if (!mci_pdev) {
debugf0("i3000 pci_get_device fail\n");
pci_rc = -ENODEV;
goto fail1;
}
pci_rc = i3000_init_one(mci_pdev, i3000_pci_tbl);
if (pci_rc < 0) {
debugf0("i3000 init fail\n");
pci_rc = -ENODEV;
goto fail1;
}
}
return 0;
fail1:
pci_unregister_driver(&i3000_driver);
fail0:
if (mci_pdev)
pci_dev_put(mci_pdev);
return pci_rc;
}
/* DEVICE instance kobject release() function */
static void edac_pci_instance_release(struct kobject *kobj)
{
struct edac_pci_ctl_info *pci;
debugf0("%s()\n", __func__);
/* Form pointer to containing struct, the pci control struct */
pci = to_instance(kobj);
/* decrement reference count on top main kobj */
kobject_put(edac_pci_top_main_kobj);
kfree(pci); /* Free the control struct */
}
/*
* MC teardown:
* the '..../edac/mc' kobject followed by '..../edac' itself
*/
static void edac_sysfs_memctrl_teardown(void)
{
debugf0("MC: " __FILE__ ": %s()\n", __func__);
/* Unregister the MC's kobject and wait for reference count to reach
* 0.
*/
init_completion(&edac_memctrl_kobj_complete);
kobject_unregister(&edac_memctrl_kobj);
wait_for_completion(&edac_memctrl_kobj_complete);
/* Unregister the 'edac' object */
sysdev_class_unregister(&edac_class);
}
/* Clear any PCI parity errors logged by this device. */
static void edac_pci_dev_parity_clear(struct pci_dev *dev)
{
u8 header_type;
debugf0("%s()\n", __func__);
get_pci_parity_status(dev, 0);
/* read the device TYPE, looking for bridges */
pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type);
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE)
get_pci_parity_status(dev, 1);
}
/* returns count (>= 0), or negative on error */
static int __devinit i3000_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int rc;
debugf0("MC: %s()\n", __func__);
if (pci_enable_device(pdev) < 0)
return -EIO;
rc = i3000_probe1(pdev, ent->driver_data);
if (mci_pdev == NULL)
mci_pdev = pci_dev_get(pdev);
return rc;
}
/*
* edac_device_unregister_sysfs_main_kobj:
* the '..../edac/<name>' kobject
*/
void edac_device_unregister_sysfs_main_kobj(struct edac_device_ctl_info *dev)
{
debugf0("%s()\n", __func__);
debugf4("%s() name of kobject is: %s\n",
__func__, kobject_name(&dev->kobj));
/*
* Unregister the edac device's kobject and
* allow for reference count to reach 0 at which point
* the callback will be called to:
* a) module_put() this module
* b) 'kfree' the memory
*/
kobject_put(&dev->kobj);
edac_put_sysfs_class();
}
static int mpc85xx_l2_err_remove(struct of_device *op)
{
struct edac_device_ctl_info *edac_dev = dev_get_drvdata(&op->dev);
struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
debugf0("%s()\n", __func__);
if (edac_op_state == EDAC_OPSTATE_INT) {
out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, 0);
irq_dispose_mapping(pdata->irq);
}
out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, orig_l2_err_disable);
edac_device_del_device(&op->dev);
edac_device_free_ctl_info(edac_dev);
return 0;
}
static int mpc85xx_mc_err_remove(struct of_device *op)
{
struct mem_ctl_info *mci = dev_get_drvdata(&op->dev);
struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
debugf0("%s()\n", __func__);
if (edac_op_state == EDAC_OPSTATE_INT) {
out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_INT_EN, 0);
irq_dispose_mapping(pdata->irq);
}
out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE,
orig_ddr_err_disable);
out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_SBE, orig_ddr_err_sbe);
edac_mc_del_mc(&op->dev);
edac_mc_free(mci);
return 0;
}
static int edac_device_create_instances(struct edac_device_ctl_info *edac_dev)
{
int i, j;
int err;
debugf0("%s()\n", __func__);
for (i = 0; i < edac_dev->nr_instances; i++) {
err = edac_device_create_instance(edac_dev, i);
if (err) {
for (j = 0; j < i; j++)
edac_device_delete_instance(edac_dev, j);
return err;
}
}
return 0;
}
/*
* edac_device_create_instances
* create the first level of 'instances' for this device
* (ie 'cache' might have 'cache0', 'cache1', 'cache2', etc
*/
static int edac_device_create_instances(struct edac_device_ctl_info *edac_dev)
{
int i, j;
int err;
debugf0("%s()\n", __func__);
/* iterate over creation of the instances */
for (i = 0; i < edac_dev->nr_instances; i++) {
err = edac_device_create_instance(edac_dev, i);
if (err) {
/* unwind previous instances on error */
for (j = 0; j < i; j++)
edac_device_delete_instance(edac_dev, j);
return err;
}
}
return 0;
}
static int mpc85xx_pci_err_remove(struct of_device *op)
{
struct edac_pci_ctl_info *pci = dev_get_drvdata(&op->dev);
struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
debugf0("%s()\n", __func__);
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR,
orig_pci_err_cap_dr);
out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, orig_pci_err_en);
edac_pci_del_device(pci->dev);
if (edac_op_state == EDAC_OPSTATE_INT)
irq_dispose_mapping(pdata->irq);
edac_pci_free_ctl_info(pci);
return 0;
}
/*
* accept a hex value and store it into the virtual error register file, field:
* nbeal and nbeah. Assume virtual error values have already been set for: NBSL,
* NBSH and NBCFG. Then proceed to map the error values to a MC, CSROW and
* CHANNEL
*/
static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data,
size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long long value;
int ret = 0;
ret = strict_strtoull(data, 16, &value);
if (ret != -EINVAL) {
debugf0("received NBEA= 0x%llx\n", value);
/* place the value into the virtual error packet */
pvt->ctl_error_info.nbeal = (u32) value;
value >>= 32;
pvt->ctl_error_info.nbeah = (u32) value;
/* Process the Mapping request */
/* TODO: Add race prevention */
amd_decode_nb_mce(pvt->mc_node_id, &pvt->ctl_error_info, 1);
return count;
}
/*
* edac_pci_create_instance_kobj
*
* construct one EDAC PCI instance's kobject for use
*/
static int edac_pci_create_instance_kobj(struct edac_pci_ctl_info *pci, int idx)
{
struct kobject *main_kobj;
int err;
debugf0("%s()\n", __func__);
/* First bump the ref count on the top main kobj, which will
* track the number of PCI instances we have, and thus nest
* properly on keeping the module loaded
*/
main_kobj = kobject_get(edac_pci_top_main_kobj);
if (!main_kobj) {
err = -ENODEV;
goto error_out;
}
/* And now register this new kobject under the main kobj */
err = kobject_init_and_add(&pci->kobj, &ktype_pci_instance,
edac_pci_top_main_kobj, "pci%d", idx);
if (err != 0) {
debugf2("%s() failed to register instance pci%d\n",
__func__, idx);
kobject_put(edac_pci_top_main_kobj);
goto error_out;
}
kobject_uevent(&pci->kobj, KOBJ_ADD);
debugf1("%s() Register instance 'pci%d' kobject\n", __func__, idx);
return 0;
/* Error unwind statck */
error_out:
return err;
}
