1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 Mantis PCI bridge driver 4 5 Copyright (C) Manu Abraham (abraham.manu@gmail.com) 6 7 */ 8 9 #include <linux/signal.h> 10 #include <linux/slab.h> 11 #include <linux/sched.h> 12 #include <linux/interrupt.h> 13 #include <asm/io.h> 14 15 #include <media/dmxdev.h> 16 #include <media/dvbdev.h> 17 #include <media/dvb_demux.h> 18 #include <media/dvb_frontend.h> 19 #include <media/dvb_net.h> 20 21 #include "mantis_common.h" 22 #include "mantis_link.h" 23 #include "mantis_hif.h" 24 #include "mantis_reg.h" 25 26 #include "mantis_ca.h" 27 28 static int mantis_ca_read_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr) 29 { 30 struct mantis_ca *ca = en50221->data; 31 struct mantis_pci *mantis = ca->ca_priv; 32 33 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Read", slot); 34 35 if (slot != 0) 36 return -EINVAL; 37 38 return mantis_hif_read_mem(ca, addr); 39 } 40 41 static int mantis_ca_write_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr, u8 data) 42 { 43 struct mantis_ca *ca = en50221->data; 44 struct mantis_pci *mantis = ca->ca_priv; 45 46 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Write", slot); 47 48 if (slot != 0) 49 return -EINVAL; 50 51 return mantis_hif_write_mem(ca, addr, data); 52 } 53 54 static int mantis_ca_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr) 55 { 56 struct mantis_ca *ca = en50221->data; 57 struct mantis_pci *mantis = ca->ca_priv; 58 59 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Read", slot); 60 61 if (slot != 0) 62 return -EINVAL; 63 64 return mantis_hif_read_iom(ca, addr); 65 } 66 67 static int mantis_ca_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr, u8 data) 68 { 69 struct mantis_ca *ca = en50221->data; 70 struct mantis_pci *mantis = ca->ca_priv; 71 72 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Write", slot); 73 74 if (slot != 0) 75 return -EINVAL; 76 77 return mantis_hif_write_iom(ca, addr, data); 78 } 79 80 static int mantis_ca_slot_reset(struct dvb_ca_en50221 *en50221, int slot) 81 { 82 struct mantis_ca *ca = en50221->data; 83 struct mantis_pci *mantis = ca->ca_priv; 84 85 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot RESET", slot); 86 udelay(500); /* Wait.. */ 87 mmwrite(0xda, MANTIS_PCMCIA_RESET); /* Leading edge assert */ 88 udelay(500); 89 mmwrite(0x00, MANTIS_PCMCIA_RESET); /* Trailing edge deassert */ 90 msleep(1000); 91 dvb_ca_en50221_camready_irq(&ca->en50221, 0); 92 93 return 0; 94 } 95 96 static int mantis_ca_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot) 97 { 98 struct mantis_ca *ca = en50221->data; 99 struct mantis_pci *mantis = ca->ca_priv; 100 101 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot shutdown", slot); 102 103 return 0; 104 } 105 106 static int mantis_ts_control(struct dvb_ca_en50221 *en50221, int slot) 107 { 108 struct mantis_ca *ca = en50221->data; 109 struct mantis_pci *mantis = ca->ca_priv; 110 111 dprintk(MANTIS_DEBUG, 1, "Slot(%d): TS control", slot); 112 /* mantis_set_direction(mantis, 1); */ /* Enable TS through CAM */ 113 114 return 0; 115 } 116 117 static int mantis_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open) 118 { 119 struct mantis_ca *ca = en50221->data; 120 struct mantis_pci *mantis = ca->ca_priv; 121 122 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Poll Slot status", slot); 123 124 if (ca->slot_state == MODULE_INSERTED) { 125 dprintk(MANTIS_DEBUG, 1, "CA Module present and ready"); 126 return DVB_CA_EN50221_POLL_CAM_PRESENT | DVB_CA_EN50221_POLL_CAM_READY; 127 } else { 128 dprintk(MANTIS_DEBUG, 1, "CA Module not present or not ready"); 129 } 130 131 return 0; 132 } 133 134 int mantis_ca_init(struct mantis_pci *mantis) 135 { 136 struct dvb_adapter *dvb_adapter = &mantis->dvb_adapter; 137 struct mantis_ca *ca; 138 int ca_flags = 0, result; 139 140 dprintk(MANTIS_DEBUG, 1, "Initializing Mantis CA"); 141 ca = kzalloc(sizeof(struct mantis_ca), GFP_KERNEL); 142 if (!ca) { 143 dprintk(MANTIS_ERROR, 1, "Out of memory!, exiting .."); 144 result = -ENOMEM; 145 goto err; 146 } 147 148 ca->ca_priv = mantis; 149 mantis->mantis_ca = ca; 150 ca_flags = DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE; 151 /* register CA interface */ 152 ca->en50221.owner = THIS_MODULE; 153 ca->en50221.read_attribute_mem = mantis_ca_read_attr_mem; 154 ca->en50221.write_attribute_mem = mantis_ca_write_attr_mem; 155 ca->en50221.read_cam_control = mantis_ca_read_cam_ctl; 156 ca->en50221.write_cam_control = mantis_ca_write_cam_ctl; 157 ca->en50221.slot_reset = mantis_ca_slot_reset; 158 ca->en50221.slot_shutdown = mantis_ca_slot_shutdown; 159 ca->en50221.slot_ts_enable = mantis_ts_control; 160 ca->en50221.poll_slot_status = mantis_slot_status; 161 ca->en50221.data = ca; 162 163 mutex_init(&ca->ca_lock); 164 165 init_waitqueue_head(&ca->hif_data_wq); 166 init_waitqueue_head(&ca->hif_opdone_wq); 167 init_waitqueue_head(&ca->hif_write_wq); 168 169 dprintk(MANTIS_ERROR, 1, "Registering EN50221 device"); 170 result = dvb_ca_en50221_init(dvb_adapter, &ca->en50221, ca_flags, 1); 171 if (result != 0) { 172 dprintk(MANTIS_ERROR, 1, "EN50221: Initialization failed <%d>", result); 173 goto err; 174 } 175 dprintk(MANTIS_ERROR, 1, "Registered EN50221 device"); 176 mantis_evmgr_init(ca); 177 return 0; 178 err: 179 kfree(ca); 180 return result; 181 } 182 EXPORT_SYMBOL_GPL(mantis_ca_init); 183 184 void mantis_ca_exit(struct mantis_pci *mantis) 185 { 186 struct mantis_ca *ca = mantis->mantis_ca; 187 188 dprintk(MANTIS_DEBUG, 1, "Mantis CA exit"); 189 if (!ca) 190 return; 191 192 mantis_evmgr_exit(ca); 193 dprintk(MANTIS_ERROR, 1, "Unregistering EN50221 device"); 194 dvb_ca_en50221_release(&ca->en50221); 195 196 kfree(ca); 197 } 198 EXPORT_SYMBOL_GPL(mantis_ca_exit); 199