}
}
-/**
- * uncore_rw_with_mcr_steering_fw - Access a register after programming
- * the MCR selector register.
+/*
+ * rw_with_mcr_steering_fw - Access a register with specific MCR steering
* @uncore: pointer to struct intel_uncore
* @reg: register being accessed
* @rw_flag: FW_REG_READ for read access or FW_REG_WRITE for write access
- * @slice: slice number (ignored for multi-cast write)
- * @subslice: sub-slice number (ignored for multi-cast write)
+ * @group: group number (documented as "sliceid" on older platforms)
+ * @instance: instance number (documented as "subsliceid" on older platforms)
* @value: register value to be written (ignored for read)
*
* Return: 0 for write access. register value for read access.
*
* Caller needs to make sure the relevant forcewake wells are up.
*/
-static u32 uncore_rw_with_mcr_steering_fw(struct intel_uncore *uncore,
- i915_reg_t reg, u8 rw_flag,
- int slice, int subslice, u32 value)
+static u32 rw_with_mcr_steering_fw(struct intel_uncore *uncore,
+ i915_reg_t reg, u8 rw_flag,
+ int group, int instance, u32 value)
{
u32 mcr_mask, mcr_ss, mcr, old_mcr, val = 0;
if (GRAPHICS_VER(uncore->i915) >= 11) {
mcr_mask = GEN11_MCR_SLICE_MASK | GEN11_MCR_SUBSLICE_MASK;
- mcr_ss = GEN11_MCR_SLICE(slice) | GEN11_MCR_SUBSLICE(subslice);
+ mcr_ss = GEN11_MCR_SLICE(group) | GEN11_MCR_SUBSLICE(instance);
/*
* Wa_22013088509
mcr_mask |= GEN11_MCR_MULTICAST;
} else {
mcr_mask = GEN8_MCR_SLICE_MASK | GEN8_MCR_SUBSLICE_MASK;
- mcr_ss = GEN8_MCR_SLICE(slice) | GEN8_MCR_SUBSLICE(subslice);
+ mcr_ss = GEN8_MCR_SLICE(group) | GEN8_MCR_SUBSLICE(instance);
}
old_mcr = mcr = intel_uncore_read_fw(uncore, GEN8_MCR_SELECTOR);
return val;
}
-static u32 uncore_rw_with_mcr_steering(struct intel_uncore *uncore,
- i915_reg_t reg, u8 rw_flag,
- int slice, int subslice,
- u32 value)
+static u32 rw_with_mcr_steering(struct intel_uncore *uncore,
+ i915_reg_t reg, u8 rw_flag,
+ int group, int instance,
+ u32 value)
{
enum forcewake_domains fw_domains;
u32 val;
spin_lock_irq(&uncore->lock);
intel_uncore_forcewake_get__locked(uncore, fw_domains);
- val = uncore_rw_with_mcr_steering_fw(uncore, reg, rw_flag,
- slice, subslice, value);
+ val = rw_with_mcr_steering_fw(uncore, reg, rw_flag, group, instance, value);
intel_uncore_forcewake_put__locked(uncore, fw_domains);
spin_unlock_irq(&uncore->lock);
return val;
}
-u32 intel_uncore_read_with_mcr_steering_fw(struct intel_uncore *uncore,
- i915_reg_t reg, int slice, int subslice)
+/**
+ * intel_gt_mcr_read - read a specific instance of an MCR register
+ * @gt: GT structure
+ * @reg: the MCR register to read
+ * @group: the MCR group
+ * @instance: the MCR instance
+ *
+ * Returns the value read from an MCR register after steering toward a specific
+ * group/instance.
+ */
+u32 intel_gt_mcr_read(struct intel_gt *gt,
+ i915_reg_t reg,
+ int group, int instance)
{
- return uncore_rw_with_mcr_steering_fw(uncore, reg, FW_REG_READ,
- slice, subslice, 0);
+ return rw_with_mcr_steering(gt->uncore, reg, FW_REG_READ, group, instance, 0);
}
-u32 intel_uncore_read_with_mcr_steering(struct intel_uncore *uncore,
- i915_reg_t reg, int slice, int subslice)
+/**
+ * intel_gt_mcr_unicast_write - write a specific instance of an MCR register
+ * @gt: GT structure
+ * @reg: the MCR register to write
+ * @value: value to write
+ * @group: the MCR group
+ * @instance: the MCR instance
+ *
+ * Write an MCR register in unicast mode after steering toward a specific
+ * group/instance.
+ */
+void intel_gt_mcr_unicast_write(struct intel_gt *gt, i915_reg_t reg, u32 value,
+ int group, int instance)
{
- return uncore_rw_with_mcr_steering(uncore, reg, FW_REG_READ,
- slice, subslice, 0);
+ rw_with_mcr_steering(gt->uncore, reg, FW_REG_WRITE, group, instance, value);
}
-void intel_uncore_write_with_mcr_steering(struct intel_uncore *uncore,
- i915_reg_t reg, u32 value,
- int slice, int subslice)
+/**
+ * intel_gt_mcr_multicast_write - write a value to all instances of an MCR register
+ * @gt: GT structure
+ * @reg: the MCR register to write
+ * @value: value to write
+ *
+ * Write an MCR register in multicast mode to update all instances.
+ */
+void intel_gt_mcr_multicast_write(struct intel_gt *gt,
+ i915_reg_t reg, u32 value)
{
- uncore_rw_with_mcr_steering(uncore, reg, FW_REG_WRITE,
- slice, subslice, value);
+ intel_uncore_write(gt->uncore, reg, value);
}
/**
- * intel_gt_reg_needs_read_steering - determine whether a register read
- * requires explicit steering
+ * intel_gt_mcr_multicast_write_fw - write a value to all instances of an MCR register
+ * @gt: GT structure
+ * @reg: the MCR register to write
+ * @value: value to write
+ *
+ * Write an MCR register in multicast mode to update all instances. This
+ * function assumes the caller is already holding any necessary forcewake
+ * domains; use intel_gt_mcr_multicast_write() in cases where forcewake should
+ * be obtained automatically.
+ */
+void intel_gt_mcr_multicast_write_fw(struct intel_gt *gt, i915_reg_t reg, u32 value)
+{
+ intel_uncore_write_fw(gt->uncore, reg, value);
+}
+
+/*
+ * reg_needs_read_steering - determine whether a register read requires
+ * explicit steering
* @gt: GT structure
* @reg: the register to check steering requirements for
* @type: type of multicast steering to check
* steering type, or if the default (subslice-based) steering IDs are suitable
* for @type steering too.
*/
-static bool intel_gt_reg_needs_read_steering(struct intel_gt *gt,
- i915_reg_t reg,
- enum intel_steering_type type)
+static bool reg_needs_read_steering(struct intel_gt *gt,
+ i915_reg_t reg,
+ enum intel_steering_type type)
{
const u32 offset = i915_mmio_reg_offset(reg);
const struct intel_mmio_range *entry;
- if (likely(!intel_gt_needs_read_steering(gt, type)))
+ if (likely(!gt->steering_table[type]))
return false;
for (entry = gt->steering_table[type]; entry->end; entry++) {
return false;
}
-/**
- * intel_gt_get_valid_steering - determines valid IDs for a class of MCR steering
+/*
+ * get_nonterminated_steering - determines valid IDs for a class of MCR steering
* @gt: GT structure
* @type: multicast register type
- * @sliceid: Slice ID returned
- * @subsliceid: Subslice ID returned
+ * @group: Group ID returned
+ * @instance: Instance ID returned
*
- * Determines sliceid and subsliceid values that will steer reads
- * of a specific multicast register class to a valid value.
+ * Determines group and instance values that will steer reads of the specified
+ * MCR class to a non-terminated instance.
*/
-static void intel_gt_get_valid_steering(struct intel_gt *gt,
- enum intel_steering_type type,
- u8 *sliceid, u8 *subsliceid)
+static void get_nonterminated_steering(struct intel_gt *gt,
+ enum intel_steering_type type,
+ u8 *group, u8 *instance)
{
switch (type) {
case L3BANK:
- *sliceid = 0; /* unused */
- *subsliceid = __ffs(gt->info.l3bank_mask);
+ *group = 0; /* unused */
+ *instance = __ffs(gt->info.l3bank_mask);
break;
case MSLICE:
GEM_WARN_ON(!HAS_MSLICE_STEERING(gt->i915));
- *sliceid = __ffs(gt->info.mslice_mask);
- *subsliceid = 0; /* unused */
+ *group = __ffs(gt->info.mslice_mask);
+ *instance = 0; /* unused */
break;
case LNCF:
/*
* can safely just steer to LNCF 0 in all cases.
*/
GEM_WARN_ON(!HAS_MSLICE_STEERING(gt->i915));
- *sliceid = __ffs(gt->info.mslice_mask) << 1;
- *subsliceid = 0; /* unused */
+ *group = __ffs(gt->info.mslice_mask) << 1;
+ *instance = 0; /* unused */
break;
case INSTANCE0:
/*
* There are a lot of MCR types for which instance (0, 0)
* will always provide a non-terminated value.
*/
- *sliceid = 0;
- *subsliceid = 0;
+ *group = 0;
+ *instance = 0;
break;
default:
MISSING_CASE(type);
- *sliceid = 0;
- *subsliceid = 0;
+ *group = 0;
+ *instance = 0;
}
}
/**
- * intel_gt_get_valid_steering_for_reg - get a valid steering for a register
+ * intel_gt_mcr_get_nonterminated_steering - find group/instance values that
+ * will steer a register to a non-terminated instance
* @gt: GT structure
* @reg: register for which the steering is required
- * @sliceid: return variable for slice steering
- * @subsliceid: return variable for subslice steering
+ * @group: return variable for group steering
+ * @instance: return variable for instance steering
*
- * This function returns a slice/subslice pair that is guaranteed to work for
+ * This function returns a group/instance pair that is guaranteed to work for
* read steering of the given register. Note that a value will be returned even
* if the register is not replicated and therefore does not actually require
* steering.
*/
-void intel_gt_get_valid_steering_for_reg(struct intel_gt *gt, i915_reg_t reg,
- u8 *sliceid, u8 *subsliceid)
+void intel_gt_mcr_get_nonterminated_steering(struct intel_gt *gt,
+ i915_reg_t reg,
+ u8 *group, u8 *instance)
{
int type;
for (type = 0; type < NUM_STEERING_TYPES; type++) {
- if (intel_gt_reg_needs_read_steering(gt, reg, type)) {
- intel_gt_get_valid_steering(gt, type, sliceid,
- subsliceid);
+ if (reg_needs_read_steering(gt, reg, type)) {
+ get_nonterminated_steering(gt, type, group, instance);
return;
}
}
- *sliceid = gt->default_steering.groupid;
- *subsliceid = gt->default_steering.instanceid;
+ *group = gt->default_steering.groupid;
+ *instance = gt->default_steering.instanceid;
}
/**
- * intel_gt_read_register_fw - reads a GT register with support for multicast
+ * intel_gt_mcr_read_any_fw - reads one instance of an MCR register
* @gt: GT structure
* @reg: register to read
*
- * This function will read a GT register. If the register is a multicast
- * register, the read will be steered to a valid instance (i.e., one that
- * isn't fused off or powered down by power gating).
+ * Reads a GT MCR register. The read will be steered to a non-terminated
+ * instance (i.e., one that isn't fused off or powered down by power gating).
+ * This function assumes the caller is already holding any necessary forcewake
+ * domains; use intel_gt_mcr_read_any() in cases where forcewake should be
+ * obtained automatically.
*
- * Returns the value from a valid instance of @reg.
+ * Returns the value from a non-terminated instance of @reg.
*/
-u32 intel_gt_read_register_fw(struct intel_gt *gt, i915_reg_t reg)
+u32 intel_gt_mcr_read_any_fw(struct intel_gt *gt, i915_reg_t reg)
{
int type;
- u8 sliceid, subsliceid;
+ u8 group, instance;
for (type = 0; type < NUM_STEERING_TYPES; type++) {
- if (intel_gt_reg_needs_read_steering(gt, reg, type)) {
- intel_gt_get_valid_steering(gt, type, &sliceid,
- &subsliceid);
- return intel_uncore_read_with_mcr_steering_fw(gt->uncore,
- reg,
- sliceid,
- subsliceid);
+ if (reg_needs_read_steering(gt, reg, type)) {
+ get_nonterminated_steering(gt, type, &group, &instance);
+ return rw_with_mcr_steering_fw(gt->uncore, reg,
+ FW_REG_READ,
+ group, instance, 0);
}
}
return intel_uncore_read_fw(gt->uncore, reg);
}
-u32 intel_gt_read_register(struct intel_gt *gt, i915_reg_t reg)
+/**
+ * intel_gt_mcr_read_any - reads one instance of an MCR register
+ * @gt: GT structure
+ * @reg: register to read
+ *
+ * Reads a GT MCR register. The read will be steered to a non-terminated
+ * instance (i.e., one that isn't fused off or powered down by power gating).
+ *
+ * Returns the value from a non-terminated instance of @reg.
+ */
+u32 intel_gt_mcr_read_any(struct intel_gt *gt, i915_reg_t reg)
{
int type;
- u8 sliceid, subsliceid;
+ u8 group, instance;
for (type = 0; type < NUM_STEERING_TYPES; type++) {
- if (intel_gt_reg_needs_read_steering(gt, reg, type)) {
- intel_gt_get_valid_steering(gt, type, &sliceid,
- &subsliceid);
- return intel_uncore_read_with_mcr_steering(gt->uncore,
- reg,
- sliceid,
- subsliceid);
+ if (reg_needs_read_steering(gt, reg, type)) {
+ get_nonterminated_steering(gt, type, &group, &instance);
+ return rw_with_mcr_steering(gt->uncore, reg,
+ FW_REG_READ,
+ group, instance, 0);
}
}
bool dump_table)
{
const struct intel_mmio_range *entry;
- u8 slice, subslice;
+ u8 group, instance;
BUILD_BUG_ON(ARRAY_SIZE(intel_steering_types) != NUM_STEERING_TYPES);
return;
}
- intel_gt_get_valid_steering(gt, type, &slice, &subslice);
- drm_printf(p, "%s steering: sliceid=0x%x, subsliceid=0x%x\n",
- intel_steering_types[type], slice, subslice);
+ get_nonterminated_steering(gt, type, &group, &instance);
+ drm_printf(p, "%s steering: group=0x%x, instance=0x%x\n",
+ intel_steering_types[type], group, instance);
if (!dump_table)
return;
drm_printf(p, "\t0x%06x - 0x%06x\n", entry->start, entry->end);
}
-void intel_gt_report_steering(struct drm_printer *p, struct intel_gt *gt,
- bool dump_table)
+void intel_gt_mcr_report_steering(struct drm_printer *p, struct intel_gt *gt,
+ bool dump_table)
{
- drm_printf(p, "Default steering: sliceid=0x%x, subsliceid=0x%x\n",
+ drm_printf(p, "Default steering: group=0x%x, instance=0x%x\n",
gt->default_steering.groupid,
gt->default_steering.instanceid);
projects / linux-2.6-microblaze.git / commitdiff