32  * kernel queues using the first doorbell page reserved for the kernel.
36  * Each device exposes a doorbell aperture, a PCI MMIO aperture that
41  * We map the doorbell address space into user-mode when a process creates
49 /* # of doorbell bytes allocated for each process. */
61 /* Doorbell calculations for device init. */
69 	 * With MES enabled, just set the doorbell base as it is needed  in kfd_doorbell_init()
70 	 * to calculate doorbell physical address.  in kfd_doorbell_init()
114 	pr_debug("Doorbell initialization:\n");  in kfd_doorbell_init()
115 	pr_debug("doorbell base           == 0x%08lX\n",  in kfd_doorbell_init()
127 	pr_debug("doorbell aperture size  == 0x%08lX\n",  in kfd_doorbell_init()
130 	pr_debug("doorbell kernel address == %p\n", kfd->doorbell_kernel_ptr);  in kfd_doorbell_init()
148 	 * For simplicitly we only allow mapping of the entire doorbell  in kfd_doorbell_mmap()
158 	/* Calculate physical address of doorbell */  in kfd_doorbell_mmap()
167 	pr_debug("Mapping doorbell page\n"  in kfd_doorbell_mmap()
184 /* get kernel iomem pointer for a doorbell */
203 	 * Calculating the kernel doorbell offset using the first  in kfd_get_kernel_doorbell()
204 	 * doorbell page.  in kfd_get_kernel_doorbell()
208 	pr_debug("Get kernel queue doorbell\n"  in kfd_get_kernel_doorbell()
209 			"     doorbell offset   == 0x%08X\n"  in kfd_get_kernel_doorbell()
210 			"     doorbell index    == 0x%x\n",  in kfd_get_kernel_doorbell()
232 		pr_debug("Writing %d to doorbell address %p\n", value, db);  in write_kernel_doorbell()
240 		     "Unaligned 64-bit doorbell");  in write_kernel_doorbell64()
242 		pr_debug("writing %llu to doorbell address %p\n", value, db);  in write_kernel_doorbell64()
254 	 * units regardless of the ASIC-dependent doorbell size.  in kfd_get_doorbell_dw_offset_in_bar()