25 	struct psp_device *psp;  in psp_alloc_struct()  local
27 	psp = devm_kzalloc(dev, sizeof(*psp), GFP_KERNEL);  in psp_alloc_struct()
28 	if (!psp)  in psp_alloc_struct()
31 	psp->dev = dev;  in psp_alloc_struct()
32 	psp->sp = sp;  in psp_alloc_struct()
34 	snprintf(psp->name, sizeof(psp->name), "psp-%u", sp->ord);  in psp_alloc_struct()
36 	return psp;  in psp_alloc_struct()
41 	struct psp_device *psp = data;  in psp_irq_handler()  local
45 	status = ioread32(psp->io_regs + psp->vdata->intsts_reg);  in psp_irq_handler()
48 	iowrite32(status, psp->io_regs + psp->vdata->intsts_reg);  in psp_irq_handler()
52 		if (psp->sev_irq_handler)  in psp_irq_handler()
53 			psp->sev_irq_handler(irq, psp->sev_irq_data, status);  in psp_irq_handler()
59 static unsigned int psp_get_capability(struct psp_device *psp)  in psp_get_capability()  argument
61 	unsigned int val = ioread32(psp->io_regs + psp->vdata->feature_reg);  in psp_get_capability()
71 		dev_notice(psp->dev, "psp: unable to access the device: you might be running a broken BIOS.\n");  in psp_get_capability()
74 	psp->capability = val;  in psp_get_capability()
77 	if (psp->capability & PSP_CAPABILITY_PSP_SECURITY_REPORTING &&  in psp_get_capability()
78 	    psp->capability & (PSP_SECURITY_TSME_STATUS << PSP_CAPABILITY_PSP_SECURITY_OFFSET) &&  in psp_get_capability()
80 …dev_notice(psp->dev, "psp: Both TSME and SME are active, SME is unnecessary when TSME is active.\n…  in psp_get_capability()
85 static int psp_check_sev_support(struct psp_device *psp)  in psp_check_sev_support()  argument
88 	if (!(psp->capability & PSP_CAPABILITY_SEV)) {  in psp_check_sev_support()
89 		dev_dbg(psp->dev, "psp does not support SEV\n");  in psp_check_sev_support()
96 static int psp_check_tee_support(struct psp_device *psp)  in psp_check_tee_support()  argument
99 	if (!(psp->capability & PSP_CAPABILITY_TEE)) {  in psp_check_tee_support()
100 		dev_dbg(psp->dev, "psp does not support TEE\n");  in psp_check_tee_support()
107 static void psp_init_platform_access(struct psp_device *psp)  in psp_init_platform_access()  argument
111 	ret = platform_access_dev_init(psp);  in psp_init_platform_access()
113 		dev_warn(psp->dev, "platform access init failed: %d\n", ret);  in psp_init_platform_access()
118 	ret = dbc_dev_init(psp);  in psp_init_platform_access()
120 		dev_warn(psp->dev, "failed to init dynamic boost control: %d\n",  in psp_init_platform_access()
124 static int psp_init(struct psp_device *psp)  in psp_init()  argument
128 	if (!psp_check_sev_support(psp)) {  in psp_init()
129 		ret = sev_dev_init(psp);  in psp_init()
134 	if (!psp_check_tee_support(psp)) {  in psp_init()
135 		ret = tee_dev_init(psp);  in psp_init()
140 	if (psp->vdata->platform_access)  in psp_init()
141 		psp_init_platform_access(psp);  in psp_init()
149 	struct psp_device *psp;  in psp_dev_init()  local
153 	psp = psp_alloc_struct(sp);  in psp_dev_init()
154 	if (!psp)  in psp_dev_init()
157 	sp->psp_data = psp;  in psp_dev_init()
159 	psp->vdata = (struct psp_vdata *)sp->dev_vdata->psp_vdata;  in psp_dev_init()
160 	if (!psp->vdata) {  in psp_dev_init()
166 	psp->io_regs = sp->io_map;  in psp_dev_init()
168 	ret = psp_get_capability(psp);  in psp_dev_init()
173 	iowrite32(0, psp->io_regs + psp->vdata->inten_reg);  in psp_dev_init()
174 	iowrite32(-1, psp->io_regs + psp->vdata->intsts_reg);  in psp_dev_init()
177 	ret = sp_request_psp_irq(psp->sp, psp_irq_handler, psp->name, psp);  in psp_dev_init()
184 	if (psp->sp->set_psp_master_device)  in psp_dev_init()
185 		psp->sp->set_psp_master_device(psp->sp);  in psp_dev_init()
187 	ret = psp_init(psp);  in psp_dev_init()
192 	iowrite32(-1, psp->io_regs + psp->vdata->inten_reg);  in psp_dev_init()
202 	sp_free_psp_irq(psp->sp, psp);  in psp_dev_init()
218 	struct psp_device *psp = sp->psp_data;  in psp_dev_destroy()  local
220 	if (!psp)  in psp_dev_destroy()
223 	sev_dev_destroy(psp);  in psp_dev_destroy()
225 	tee_dev_destroy(psp);  in psp_dev_destroy()
227 	dbc_dev_destroy(psp);  in psp_dev_destroy()
229 	platform_access_dev_destroy(psp);  in psp_dev_destroy()
231 	sp_free_psp_irq(sp, psp);  in psp_dev_destroy()
237 void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,  in psp_set_sev_irq_handler()  argument
240 	psp->sev_irq_data = data;  in psp_set_sev_irq_handler()
241 	psp->sev_irq_handler = handler;  in psp_set_sev_irq_handler()
244 void psp_clear_sev_irq_handler(struct psp_device *psp)  in psp_clear_sev_irq_handler()  argument
246 	psp_set_sev_irq_handler(psp, NULL, NULL);  in psp_clear_sev_irq_handler()