include/asm/mips-cm.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
8 # error Please include asm/mips-cps.h rather than asm/mips-cm.h
21 /* The base address of the CM L2-only sync region */
25  * mips_cm_phys_base - retrieve the physical base address of the CM
36  * mips_cm_l2sync_phys_base - retrieve the physical base address of the CM
37  *                            L2-sync region
40  * L2-cache only region. It provides a default implementation which reads the
49  * mips_cm_is64 - determine CM register width
53  * However we may run a kernel built for MIPS32 on a system with 64 bit GCRs,
54  * or vice-versa. This variable indicates the width of the memory accesses
58  * It's set to 0 for 32-bit accesses and 1 for 64-bit accesses.
63  * mips_cm_is_l2_hci_broken  - determine if HCI is broken
65  * Some CM reports show that Hardware Cache Initialization is
67  * indicate that Hardware Cache Initialization is supported. This
73  * mips_cm_error_report - Report CM cache errors
82  * mips_cm_probe - probe for a Coherence Manager
85  * is successfully detected, else -errno.
92 	return -ENODEV;  in mips_cm_probe()
97  * mips_cm_present - determine whether a Coherence Manager is present
99  * Returns true if a CM is present in the system, else false.
111  * mips_cm_update_property - update property from the device tree
123  * mips_cm_has_l2sync - determine whether an L2-only sync region is present
125  * Returns true if the system implements an L2-only sync region, else false.
145 /* Size of the L2-only sync region */
164 /* GCR_CONFIG - Information about the system */
172 /* GCR_BASE - Base address of the Global Configuration Registers (GCRs) */
181 /* GCR_ACCESS - Controls core/IOCU access to GCRs */
185 /* GCR_REV - Indicates the Coherence Manager revision */
199 /* GCR_ERR_CONTROL - Control error checking logic */
204 /* GCR_ERR_MASK - Control which errors are reported as interrupts */
207 /* GCR_ERR_CAUSE - Indicates the type of error that occurred */
213 /* GCR_ERR_ADDR - Indicates the address associated with an error */
216 /* GCR_ERR_MULT - Indicates when multiple errors have occurred */
220 /* GCR_L2_ONLY_SYNC_BASE - Base address of the L2 cache-only sync region */
225 /* GCR_GIC_BASE - Base address of the Global Interrupt Controller (GIC) */
230 /* GCR_CPC_BASE - Base address of the Cluster Power Controller (CPC) */
235 /* GCR_REGn_BASE - Base addresses of CM address regions */
242 /* GCR_REGn_MASK - Size & destination of CM address regions */
257 /* GCR_GIC_STATUS - Indicates presence of a Global Interrupt Controller (GIC) */
261 /* GCR_CPC_STATUS - Indicates presence of a Cluster Power Controller (CPC) */
265 /* GCR_ACCESS - Controls core/IOCU access to GCRs */
269 /* GCR_L2_CONFIG - Indicates L2 cache configuration when Config5.L2C=1 */
276 /* GCR_SYS_CONFIG2 - Further information about the system */
280 /* GCR_L2-RAM_CONFIG - Configuration & status of L2 cache RAMs */
286 /* GCR_L2_PFT_CONTROL - Controls hardware L2 prefetching */
292 /* GCR_L2_PFT_CONTROL_B - Controls hardware L2 prefetching */
297 /* GCR_L2_TAG_ADDR - Access addresses in L2 cache tags */
300 /* GCR_L2_TAG_STATE - Access L2 cache tag state */
303 /* GCR_L2_DATA - Access data in L2 cache lines */
306 /* GCR_L2_ECC - Access ECC information from L2 cache lines */
309 /* GCR_L2SM_COP - L2 cache op state machine control */
331 /* GCR_L2SM_TAG_ADDR_COP - L2 cache op state machine address control */
336 /* GCR_BEV_BASE - Controls the location of the BEV for powered up cores */
339 /* GCR_Cx_RESET_RELEASE - Controls core reset for CM 1.x */
342 /* GCR_Cx_COHERENCE - Controls core coherence */
347 /* GCR_Cx_CONFIG - Information about a core's configuration */
352 /* GCR_Cx_OTHER - Configure the core-other/redirect GCR block */
367 /* GCR_Cx_RESET_BASE - Configure where powered up cores will fetch from */
374 /* GCR_Cx_ID - Identify the current core */
379 /* GCR_Cx_RESET_EXT_BASE - Configure behaviour when cores reset or power up */
388  * mips_cm_l2sync - perform an L2-only sync operation
390  * If an L2-only sync region is present in the system then this function
391  * performs and L2-only sync and returns zero. Otherwise it returns -ENODEV.
396 		return -ENODEV;  in mips_cm_l2sync()
403  * mips_cm_revision() - return CM revision
417  * mips_cm_max_vp_width() - return the width in bits of VP indices
432 		 * We presume that all cores in the system will have the same  in mips_cm_max_vp_width()
446  * mips_cm_vp_id() - calculate the hardware VP ID for a CPU
466  * mips_cm_lock_other - lock access to redirect/other region
479  * mips_cm_unlock_other() calls cannot be pre-empted by anything which may
487  * mips_cm_unlock_other - unlock access to redirect/other region
503  * mips_cm_lock_other_cpu - lock access to redirect/other region