Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright 2015 IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include "cxl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) static const __be32 *read_prop_string(const struct device_node *np,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 				const char *prop_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	const __be32 *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	prop = of_get_property(np, prop_name, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	if (cxl_verbose && prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 		pr_info("%s: %s\n", prop_name, (char *) prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	return prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) static const __be32 *read_prop_dword(const struct device_node *np,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 				const char *prop_name, u32 *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	const __be32 *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	prop = of_get_property(np, prop_name, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 		*val = be32_to_cpu(prop[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	if (cxl_verbose && prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		pr_info("%s: %#x (%u)\n", prop_name, *val, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	return prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) static const __be64 *read_prop64_dword(const struct device_node *np,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 				const char *prop_name, u64 *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	const __be64 *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	prop = of_get_property(np, prop_name, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		*val = be64_to_cpu(prop[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	if (cxl_verbose && prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		pr_info("%s: %#llx (%llu)\n", prop_name, *val, *val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	return prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) static int read_handle(struct device_node *np, u64 *handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	const __be32 *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	u64 size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	/* Get address and size of the node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	prop = of_get_address(np, 0, &size, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	if (size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	/* Helper to read a big number; size is in cells (not bytes) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	*handle = of_read_number(prop, of_n_addr_cells(np));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) static int read_phys_addr(struct device_node *np, char *prop_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	int i, len, entry_size, naddr, nsize, type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	u64 addr, size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	const __be32 *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	naddr = of_n_addr_cells(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	nsize = of_n_size_cells(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	prop = of_get_property(np, prop_name, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (prop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		entry_size = naddr + nsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		for (i = 0; i < (len / 4); i += entry_size, prop += entry_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 			type = be32_to_cpu(prop[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 			addr = of_read_number(prop, naddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 			size = of_read_number(&prop[naddr], nsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 			case 0: /* unit address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 				afu->guest->handle = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 			case 1: /* p2 area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 				afu->guest->p2n_phys += addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 				afu->guest->p2n_size = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 			case 2: /* problem state area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 				afu->psn_phys += addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 				afu->adapter->ps_size = size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 			default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 				pr_err("Invalid address type %d found in %s property of AFU\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 					type, prop_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 				return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 			if (cxl_verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 				pr_info("%s: %#x %#llx (size %#llx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 					prop_name, type, addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static int read_vpd(struct cxl *adapter, struct cxl_afu *afu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	char vpd[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	size_t len = sizeof(vpd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	memset(vpd, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	if (adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		rc = cxl_guest_read_adapter_vpd(adapter, vpd, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 		rc = cxl_guest_read_afu_vpd(afu, vpd, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	if (rc > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 		cxl_dump_debug_buffer(vpd, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int cxl_of_read_afu_handle(struct cxl_afu *afu, struct device_node *afu_np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (read_handle(afu_np, &afu->guest->handle))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	pr_devel("AFU handle: 0x%.16llx\n", afu->guest->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int cxl_of_read_afu_properties(struct cxl_afu *afu, struct device_node *np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	int i, len, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	const __be32 *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	u16 device_id, vendor_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	u32 val = 0, class_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	/* Properties are read in the same order as listed in PAPR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		pr_info("Dump of the 'ibm,coherent-platform-function' node properties:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		prop = of_get_property(np, "compatible", &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		while (i < len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 			p = (char *) prop + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			pr_info("compatible: %s\n", p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 			i += strlen(p) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		read_prop_string(np, "name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	rc = read_phys_addr(np, "reg", afu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	rc = read_phys_addr(np, "assigned-addresses", afu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	if (afu->psn_phys == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		afu->psa = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		afu->psa = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		read_prop_string(np, "ibm,loc-code");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		read_prop_string(np, "device_type");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	read_prop_dword(np, "ibm,#processes", &afu->max_procs_virtualised);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		read_prop_dword(np, "ibm,scratchpad-size", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		read_prop_dword(np, "ibm,programmable", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 		read_prop_string(np, "ibm,phandle");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		read_vpd(NULL, afu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	read_prop_dword(np, "ibm,max-ints-per-process", &afu->guest->max_ints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	afu->irqs_max = afu->guest->max_ints;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	prop = read_prop_dword(np, "ibm,min-ints-per-process", &afu->pp_irqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (prop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		/* One extra interrupt for the PSL interrupt is already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		 * included. Remove it now to keep only AFU interrupts and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		 * match the native case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		afu->pp_irqs--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		read_prop_dword(np, "ibm,max-ints", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		read_prop_dword(np, "ibm,vpd-size", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	read_prop64_dword(np, "ibm,error-buffer-size", &afu->eb_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	afu->eb_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	if (cxl_verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		read_prop_dword(np, "ibm,config-record-type", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	read_prop64_dword(np, "ibm,config-record-size", &afu->crs_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	afu->crs_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	read_prop_dword(np, "ibm,#config-records", &afu->crs_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		for (i = 0; i < afu->crs_num; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			rc = cxl_ops->afu_cr_read16(afu, i, PCI_DEVICE_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 						&device_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			if (!rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 				pr_info("record %d - device-id: %#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 					i, device_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 			rc = cxl_ops->afu_cr_read16(afu, i, PCI_VENDOR_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 						&vendor_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 			if (!rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 				pr_info("record %d - vendor-id: %#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 					i, vendor_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 			rc = cxl_ops->afu_cr_read32(afu, i, PCI_CLASS_REVISION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 						&class_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 			if (!rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 				class_code >>= 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 				pr_info("record %d - class-code: %#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 					i, class_code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		read_prop_dword(np, "ibm,function-number", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		read_prop_dword(np, "ibm,privileged-function", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		read_prop_dword(np, "vendor-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		read_prop_dword(np, "device-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		read_prop_dword(np, "revision-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		read_prop_dword(np, "class-code", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		read_prop_dword(np, "subsystem-vendor-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		read_prop_dword(np, "subsystem-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	 * if "ibm,process-mmio" doesn't exist then per-process mmio is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	 * not supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	prop = read_prop_dword(np, "ibm,process-mmio", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	if (prop && val == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		afu->pp_psa = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 		afu->pp_psa = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		read_prop_dword(np, "ibm,supports-aur", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		read_prop_dword(np, "ibm,supports-csrp", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		read_prop_dword(np, "ibm,supports-prr", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	prop = read_prop_dword(np, "ibm,function-error-interrupt", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 		afu->serr_hwirq = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	pr_devel("AFU handle: %#llx\n", afu->guest->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	pr_devel("p2n_phys: %#llx (size %#llx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 		afu->guest->p2n_phys, afu->guest->p2n_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	pr_devel("psn_phys: %#llx (size %#llx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 		afu->psn_phys, afu->adapter->ps_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	pr_devel("Max number of processes virtualised=%i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		afu->max_procs_virtualised);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	pr_devel("Per-process irqs min=%i, max=%i\n", afu->pp_irqs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		 afu->irqs_max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	pr_devel("Slice error interrupt=%#lx\n", afu->serr_hwirq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) static int read_adapter_irq_config(struct cxl *adapter, struct device_node *np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	const __be32 *ranges;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	int len, nranges, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	struct irq_avail *cur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	ranges = of_get_property(np, "interrupt-ranges", &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	if (ranges == NULL || len < (2 * sizeof(int)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	 * encoded array of two cells per entry, each cell encoded as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	 * with encode-int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	nranges = len / (2 * sizeof(int));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	if (nranges == 0 || (nranges * 2 * sizeof(int)) != len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	adapter->guest->irq_avail = kcalloc(nranges, sizeof(struct irq_avail),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 					    GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	if (adapter->guest->irq_avail == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	adapter->guest->irq_base_offset = be32_to_cpu(ranges[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	for (i = 0; i < nranges; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		cur = &adapter->guest->irq_avail[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		cur->offset = be32_to_cpu(ranges[i * 2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 		cur->range  = be32_to_cpu(ranges[i * 2 + 1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		cur->bitmap = kcalloc(BITS_TO_LONGS(cur->range),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 				sizeof(*cur->bitmap), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		if (cur->bitmap == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 			goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		if (cur->offset < adapter->guest->irq_base_offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 			adapter->guest->irq_base_offset = cur->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		if (cxl_verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 			pr_info("available IRQ range: %#lx-%#lx (%lu)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 				cur->offset, cur->offset + cur->range - 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 				cur->range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	adapter->guest->irq_nranges = nranges;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	spin_lock_init(&adapter->guest->irq_alloc_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	for (i--; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		cur = &adapter->guest->irq_avail[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		kfree(cur->bitmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	kfree(adapter->guest->irq_avail);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	adapter->guest->irq_avail = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) int cxl_of_read_adapter_handle(struct cxl *adapter, struct device_node *np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	if (read_handle(np, &adapter->guest->handle))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	pr_devel("Adapter handle: 0x%.16llx\n", adapter->guest->handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) int cxl_of_read_adapter_properties(struct cxl *adapter, struct device_node *np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	int rc, len, naddr, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	const __be32 *prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	u32 val = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	/* Properties are read in the same order as listed in PAPR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	naddr = of_n_addr_cells(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		pr_info("Dump of the 'ibm,coherent-platform-facility' node properties:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		read_prop_dword(np, "#address-cells", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		read_prop_dword(np, "#size-cells", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 		prop = of_get_property(np, "compatible", &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 		i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 		while (i < len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 			p = (char *) prop + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 			pr_info("compatible: %s\n", p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 			i += strlen(p) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		read_prop_string(np, "name");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 		read_prop_string(np, "model");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		prop = of_get_property(np, "reg", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		if (prop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 			pr_info("reg: addr:%#llx size:%#x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 				of_read_number(prop, naddr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 				be32_to_cpu(prop[naddr]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 		read_prop_string(np, "ibm,loc-code");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	if ((rc = read_adapter_irq_config(adapter, np)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 		return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 		read_prop_string(np, "device_type");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 		read_prop_string(np, "ibm,phandle");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	prop = read_prop_dword(np, "ibm,caia-version", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	if (prop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		adapter->caia_major = (val & 0xFF00) >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 		adapter->caia_minor = val & 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	prop = read_prop_dword(np, "ibm,psl-revision", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 		adapter->psl_rev = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	prop = read_prop_string(np, "status");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	if (prop) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		adapter->guest->status = kasprintf(GFP_KERNEL, "%s", (char *) prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 		if (adapter->guest->status == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 	prop = read_prop_dword(np, "vendor-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 		adapter->guest->vendor = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 	prop = read_prop_dword(np, "device-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 		adapter->guest->device = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 	if (cxl_verbose) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 		read_prop_dword(np, "ibm,privileged-facility", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 		read_prop_dword(np, "revision-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 		read_prop_dword(np, "class-code", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 	prop = read_prop_dword(np, "subsystem-vendor-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 		adapter->guest->subsystem_vendor = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	prop = read_prop_dword(np, "subsystem-id", &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	if (prop)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 		adapter->guest->subsystem = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	if (cxl_verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 		read_vpd(adapter, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static int cxl_of_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	struct cxl *adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 	int afu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 	adapter = dev_get_drvdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 	for (afu = 0; afu < adapter->slices; afu++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 		cxl_guest_remove_afu(adapter->afu[afu]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 	cxl_guest_remove_adapter(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static void cxl_of_shutdown(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 	cxl_of_remove(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) int cxl_of_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 	struct device_node *np = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 	struct device_node *afu_np = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 	struct cxl *adapter = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 	int slice = 0, slice_ok = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) 	pr_devel("in %s\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 	np = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 	if (np == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 	/* init adapter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 	adapter = cxl_guest_init_adapter(np, pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 	if (IS_ERR(adapter)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 		dev_err(&pdev->dev, "guest_init_adapter failed: %li\n", PTR_ERR(adapter));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 		return PTR_ERR(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 	/* init afu */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 	for_each_child_of_node(np, afu_np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 		if ((ret = cxl_guest_init_afu(adapter, slice, afu_np)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 			dev_err(&pdev->dev, "AFU %i failed to initialise: %i\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 				slice, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 			slice_ok++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 		slice++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 	if (slice_ok == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 		dev_info(&pdev->dev, "No active AFU");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) 		adapter->slices = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) static const struct of_device_id cxl_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) 	{ .compatible = "ibm,coherent-platform-facility",},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) MODULE_DEVICE_TABLE(of, cxl_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct platform_driver cxl_of_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 		.name = "cxl_of",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 		.of_match_table = cxl_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 		.owner = THIS_MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 	.probe = cxl_of_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) 	.remove = cxl_of_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) 	.shutdown = cxl_of_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) };