58 	struct psp_device *psp;  in psp_alloc_struct()  local
60 	psp = devm_kzalloc(dev, sizeof(*psp), GFP_KERNEL);  in psp_alloc_struct()
61 	if (!psp)  in psp_alloc_struct()
64 	psp->dev = dev;  in psp_alloc_struct()
65 	psp->sp = sp;  in psp_alloc_struct()
67 	snprintf(psp->name, sizeof(psp->name), "psp-%u", sp->ord);  in psp_alloc_struct()
69 	return psp;  in psp_alloc_struct()
74 	struct psp_device *psp = data;  in psp_irq_handler()  local
79 	status = ioread32(psp->io_regs + psp->vdata->intsts_reg);  in psp_irq_handler()
86 	reg = ioread32(psp->io_regs + psp->vdata->cmdresp_reg);  in psp_irq_handler()
88 		psp->sev_int_rcvd = 1;  in psp_irq_handler()
89 		wake_up(&psp->sev_int_queue);  in psp_irq_handler()
94 	iowrite32(status, psp->io_regs + psp->vdata->intsts_reg);  in psp_irq_handler()
99 static int sev_wait_cmd_ioc(struct psp_device *psp,  in sev_wait_cmd_ioc()  argument
104 	ret = wait_event_timeout(psp->sev_int_queue,  in sev_wait_cmd_ioc()
105 			psp->sev_int_rcvd, timeout * HZ);  in sev_wait_cmd_ioc()
109 	*reg = ioread32(psp->io_regs + psp->vdata->cmdresp_reg);  in sev_wait_cmd_ioc()
152 	struct psp_device *psp = psp_master;  in __sev_do_cmd_locked()  local
156 	if (!psp)  in __sev_do_cmd_locked()
166 	dev_dbg(psp->dev, "sev command id %#x buffer 0x%08x%08x timeout %us\n",  in __sev_do_cmd_locked()
172 	iowrite32(phys_lsb, psp->io_regs + psp->vdata->cmdbuff_addr_lo_reg);  in __sev_do_cmd_locked()
173 	iowrite32(phys_msb, psp->io_regs + psp->vdata->cmdbuff_addr_hi_reg);  in __sev_do_cmd_locked()
175 	psp->sev_int_rcvd = 0;  in __sev_do_cmd_locked()
180 	iowrite32(reg, psp->io_regs + psp->vdata->cmdresp_reg);  in __sev_do_cmd_locked()
183 	ret = sev_wait_cmd_ioc(psp, &reg, psp_timeout);  in __sev_do_cmd_locked()
188 		dev_err(psp->dev, "sev command %#x timed out, disabling PSP \n", cmd);  in __sev_do_cmd_locked()
200 		dev_dbg(psp->dev, "sev command %#x failed (%#010x)\n",  in __sev_do_cmd_locked()
224 	struct psp_device *psp = psp_master;  in __sev_platform_init_locked()  local
227 	if (!psp)  in __sev_platform_init_locked()
230 	if (psp->sev_state == SEV_STATE_INIT)  in __sev_platform_init_locked()
233 	rc = __sev_do_cmd_locked(SEV_CMD_INIT, &psp->init_cmd_buf, error);  in __sev_platform_init_locked()
237 	psp->sev_state = SEV_STATE_INIT;  in __sev_platform_init_locked()
238 	dev_dbg(psp->dev, "SEV firmware initialized\n");  in __sev_platform_init_locked()
890 static int sev_misc_init(struct psp_device *psp)  in sev_misc_init()  argument
892 	struct device *dev = psp->dev;  in sev_misc_init()
923 	init_waitqueue_head(&psp->sev_int_queue);  in sev_misc_init()
924 	psp->sev_misc = misc_dev;  in sev_misc_init()
930 static int psp_check_sev_support(struct psp_device *psp)  in psp_check_sev_support()  argument
933 	if (!(ioread32(psp->io_regs + psp->vdata->feature_reg) & 1)) {  in psp_check_sev_support()
934 		dev_dbg(psp->dev, "psp does not support SEV\n");  in psp_check_sev_support()
944 	struct psp_device *psp;  in psp_dev_init()  local
948 	psp = psp_alloc_struct(sp);  in psp_dev_init()
949 	if (!psp)  in psp_dev_init()
952 	sp->psp_data = psp;  in psp_dev_init()
954 	psp->vdata = (struct psp_vdata *)sp->dev_vdata->psp_vdata;  in psp_dev_init()
955 	if (!psp->vdata) {  in psp_dev_init()
961 	psp->io_regs = sp->io_map;  in psp_dev_init()
963 	ret = psp_check_sev_support(psp);  in psp_dev_init()
968 	iowrite32(0, psp->io_regs + psp->vdata->inten_reg);  in psp_dev_init()
969 	iowrite32(-1, psp->io_regs + psp->vdata->intsts_reg);  in psp_dev_init()
972 	ret = sp_request_psp_irq(psp->sp, psp_irq_handler, psp->name, psp);  in psp_dev_init()
978 	ret = sev_misc_init(psp);  in psp_dev_init()
986 	iowrite32(-1, psp->io_regs + psp->vdata->inten_reg);  in psp_dev_init()
993 	sp_free_psp_irq(psp->sp, psp);  in psp_dev_init()
1009 	struct psp_device *psp = sp->psp_data;  in psp_dev_destroy()  local
1011 	if (!psp)  in psp_dev_destroy()
1014 	if (psp->sev_misc)  in psp_dev_destroy()
1017 	sp_free_psp_irq(sp, psp);  in psp_dev_destroy()