/**
* of_device_make_bus_id - Use the device node data to assign a unique name
* @dev: pointer to device structure that is linked to a device tree node
*
* This routine will first try using either the dcr-reg or the reg property
* value to derive a unique name. As a last resort it will use the node
* name followed by a unique number.
*/
void of_device_make_bus_id(struct device *dev)
{
static atomic_t bus_no_reg_magic;
struct device_node *node = dev->of_node;
const __be32 *reg;
u64 addr;
const __be32 *addrp;
int magic;
#ifdef CONFIG_PPC_DCR
/*
* If it's a DCR based device, use 'd' for native DCRs
* and 'D' for MMIO DCRs.
*/
reg = of_get_property(node, "dcr-reg", NULL);
if (reg) {
#ifdef CONFIG_PPC_DCR_NATIVE
dev_set_name(dev, "d%x.%s", *reg, node->name);
#else /* CONFIG_PPC_DCR_NATIVE */
u64 addr = of_translate_dcr_address(node, *reg, NULL);
if (addr != OF_BAD_ADDR) {
dev_set_name(dev, "D%llx.%s",
(unsigned long long)addr, node->name);
return;
}
#endif /* !CONFIG_PPC_DCR_NATIVE */
}
#endif /* CONFIG_PPC_DCR */
/*
* For MMIO, get the physical address
*/
reg = of_get_property(node, "reg", NULL);
if (reg) {
if (of_can_translate_address(node)) {
addr = of_translate_address(node, reg);
} else {
addrp = of_get_address(node, 0, NULL, NULL);
if (addrp)
addr = of_read_number(addrp, 1);
else
addr = OF_BAD_ADDR;
}
if (addr != OF_BAD_ADDR) {
dev_set_name(dev, "%llx.%s",
(unsigned long long)addr, node->name);
return;
}
}
/*
* No BusID, use the node name and add a globally incremented
* counter (and pray...)
*/
magic = atomic_add_return(1, &bus_no_reg_magic);
dev_set_name(dev, "%s.%d", node->name, magic - 1);
}
static void of_device_make_bus_id(struct of_device *dev)
{
static atomic_t bus_no_reg_magic;
struct device_node *node = dev->node;
char *name = dev->dev.bus_id;
const u32 *reg;
u64 addr;
int magic;
/*
* If it's a DCR based device, use 'd' for native DCRs
* and 'D' for MMIO DCRs.
*/
#ifdef CONFIG_PPC_DCR
reg = of_get_property(node, "dcr-reg", NULL);
if (reg) {
#ifdef CONFIG_PPC_DCR_NATIVE
snprintf(name, BUS_ID_SIZE, "d%x.%s",
*reg, node->name);
#else /* CONFIG_PPC_DCR_NATIVE */
addr = of_translate_dcr_address(node, *reg, NULL);
if (addr != OF_BAD_ADDR) {
snprintf(name, BUS_ID_SIZE,
"D%llx.%s", (unsigned long long)addr,
node->name);
return;
}
#endif /* !CONFIG_PPC_DCR_NATIVE */
}
#endif /* CONFIG_PPC_DCR */
/*
* For MMIO, get the physical address
*/
reg = of_get_property(node, "reg", NULL);
if (reg) {
addr = of_translate_address(node, reg);
if (addr != OF_BAD_ADDR) {
snprintf(name, BUS_ID_SIZE,
"%llx.%s", (unsigned long long)addr,
node->name);
return;
}
}
/*
* No BusID, use the node name and add a globally incremented
* counter (and pray...)
*/
magic = atomic_add_return(1, &bus_no_reg_magic);
snprintf(name, BUS_ID_SIZE, "%s.%d", node->name, magic - 1);
}
void of_device_make_bus_id(struct device *dev)
{
static atomic_t bus_no_reg_magic;
struct device_node *node = dev->of_node;
const u32 *reg;
u64 addr;
const __be32 *addrp;
int magic;
#ifdef CONFIG_PPC_DCR
reg = of_get_property(node, "dcr-reg", NULL);
if (reg) {
#ifdef CONFIG_PPC_DCR_NATIVE
dev_set_name(dev, "d%x.%s", *reg, node->name);
#else
u64 addr = of_translate_dcr_address(node, *reg, NULL);
if (addr != OF_BAD_ADDR) {
dev_set_name(dev, "D%llx.%s",
(unsigned long long)addr, node->name);
return;
}
#endif
}
#endif
reg = of_get_property(node, "reg", NULL);
if (reg) {
if (of_can_translate_address(node)) {
addr = of_translate_address(node, reg);
} else {
addrp = of_get_address(node, 0, NULL, NULL);
if (addrp)
addr = of_read_number(addrp, 1);
else
addr = OF_BAD_ADDR;
}
if (addr != OF_BAD_ADDR) {
dev_set_name(dev, "%llx.%s",
(unsigned long long)addr, node->name);
return;
}
}
magic = atomic_add_return(1, &bus_no_reg_magic);
dev_set_name(dev, "%s.%d", node->name, magic - 1);
}
/**
* of_device_make_bus_id - Use the device node data to assign a unique name
* @dev: pointer to device structure that is linked to a device tree node
*
* This routine will first try using either the dcr-reg or the reg property
* value to derive a unique name. As a last resort it will use the node
* name followed by a unique number.
*/
static void of_device_make_bus_id(struct device_d *dev)
{
static int bus_no_reg_magic;
struct device_node *np = dev->device_node;
const __be32 *reg, *addrp;
u64 addr;
char *name, *at;
name = xstrdup(np->name);
at = strchr(name, '@');
if (at)
*at = '\0';
#ifdef CONFIG_PPC_DCR
/*
* If it's a DCR based device, use 'd' for native DCRs
* and 'D' for MMIO DCRs.
*/
reg = of_get_property(np, "dcr-reg", NULL);
if (reg) {
#ifdef CONFIG_PPC_DCR_NATIVE
snprintf(dev->name, MAX_DRIVER_NAME, "d%x.%s", *reg, name);
#else /* CONFIG_PPC_DCR_NATIVE */
u64 addr = of_translate_dcr_address(np, *reg, NULL);
if (addr != OF_BAD_ADDR) {
snprintf(dev->name, MAX_DRIVER_NAME, "D%llx.%s",
(unsigned long long)addr, name);
free(name);
return;
}
#endif /* !CONFIG_PPC_DCR_NATIVE */
}
#endif /* CONFIG_PPC_DCR */
/*
* For MMIO, get the physical address
*/
reg = of_get_property(np, "reg", NULL);
if (reg) {
if (of_can_translate_address(np)) {
addr = of_translate_address(np, reg);
} else {
addrp = of_get_address(np, 0, NULL, NULL);
if (addrp)
addr = of_read_number(addrp, 1);
else
addr = OF_BAD_ADDR;
}
if (addr != OF_BAD_ADDR) {
snprintf(dev->name, MAX_DRIVER_NAME, "%llx.%s",
(unsigned long long)addr, name);
free(name);
return;
}
}
/*
* No BusID, use the node name and add a globally incremented counter
*/
snprintf(dev->name, MAX_DRIVER_NAME, "%s.%d", name, bus_no_reg_magic++);
free(name);
}
ret += (u64)(stride) * (u64)dcr_n;
if (out_stride)
*out_stride = stride;
return ret;
}
dcr_host_t dcr_map(struct device_node *dev, unsigned int dcr_n,
unsigned int dcr_c)
{
dcr_host_t ret = { .token = NULL, .stride = 0 };
u64 addr;
pr_debug("dcr_map(%s, 0x%x, 0x%x)\n",
dev->full_name, dcr_n, dcr_c);
addr = of_translate_dcr_address(dev, dcr_n, &ret.stride);
pr_debug("translates to addr: 0x%lx, stride: 0x%x\n",
addr, ret.stride);
if (addr == OF_BAD_ADDR)
return ret;
pr_debug("mapping 0x%x bytes\n", dcr_c * ret.stride);
ret.token = ioremap(addr, dcr_c * ret.stride);
if (ret.token == NULL)
return ret;
pr_debug("mapped at 0x%p -> base is 0x%p\n",
ret.token, ret.token - dcr_n * ret.stride);
ret.token -= dcr_n * ret.stride;
return ret;
}
void dcr_unmap(dcr_host_t host, unsigned int dcr_n, unsigned int dcr_c)