Lines Matching refs:psp
14 #include "psp-dev.h"
23 struct psp_device *psp;
25 psp = devm_kzalloc(dev, sizeof(*psp), GFP_KERNEL);
26 if (!psp)
29 psp->dev = dev;
30 psp->sp = sp;
32 snprintf(psp->name, sizeof(psp->name), "psp-%u", sp->ord);
34 return psp;
39 struct psp_device *psp = data;
43 status = ioread32(psp->io_regs + psp->vdata->intsts_reg);
46 iowrite32(status, psp->io_regs + psp->vdata->intsts_reg);
50 if (psp->sev_irq_handler)
51 psp->sev_irq_handler(irq, psp->sev_irq_data, status);
53 if (psp->tee_irq_handler)
54 psp->tee_irq_handler(irq, psp->tee_irq_data, status);
60 static unsigned int psp_get_capability(struct psp_device *psp)
62 unsigned int val = ioread32(psp->io_regs + psp->vdata->feature_reg);
72 dev_notice(psp->dev, "psp: unable to access the device: you might be running a broken BIOS.\n");
79 static int psp_check_sev_support(struct psp_device *psp,
84 dev_dbg(psp->dev, "psp does not support SEV\n");
91 static int psp_check_tee_support(struct psp_device *psp,
96 dev_dbg(psp->dev, "psp does not support TEE\n");
103 static int psp_check_support(struct psp_device *psp,
106 int sev_support = psp_check_sev_support(psp, capability);
107 int tee_support = psp_check_tee_support(psp, capability);
116 static int psp_init(struct psp_device *psp, unsigned int capability)
120 if (!psp_check_sev_support(psp, capability)) {
121 ret = sev_dev_init(psp);
126 if (!psp_check_tee_support(psp, capability)) {
127 ret = tee_dev_init(psp);
138 struct psp_device *psp;
143 psp = psp_alloc_struct(sp);
144 if (!psp)
147 sp->psp_data = psp;
149 psp->vdata = (struct psp_vdata *)sp->dev_vdata->psp_vdata;
150 if (!psp->vdata) {
156 psp->io_regs = sp->io_map;
158 capability = psp_get_capability(psp);
162 ret = psp_check_support(psp, capability);
167 iowrite32(0, psp->io_regs + psp->vdata->inten_reg);
168 iowrite32(-1, psp->io_regs + psp->vdata->intsts_reg);
171 ret = sp_request_psp_irq(psp->sp, psp_irq_handler, psp->name, psp);
173 dev_err(dev, "psp: unable to allocate an IRQ\n");
177 ret = psp_init(psp, capability);
185 iowrite32(-1, psp->io_regs + psp->vdata->inten_reg);
187 dev_notice(dev, "psp enabled\n");
192 sp_free_psp_irq(psp->sp, psp);
196 dev_notice(dev, "psp initialization failed\n");
208 struct psp_device *psp = sp->psp_data;
210 if (!psp)
213 sev_dev_destroy(psp);
215 tee_dev_destroy(psp);
217 sp_free_psp_irq(sp, psp);
223 void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
226 psp->sev_irq_data = data;
227 psp->sev_irq_handler = handler;
230 void psp_clear_sev_irq_handler(struct psp_device *psp)
232 psp_set_sev_irq_handler(psp, NULL, NULL);
235 void psp_set_tee_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
238 psp->tee_irq_data = data;
239 psp->tee_irq_handler = handler;
242 void psp_clear_tee_irq_handler(struct psp_device *psp)
244 psp_set_tee_irq_handler(psp, NULL, NULL);