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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 | // SPDX-License-Identifier: GPL-2.0-or-later /* Mantis PCI bridge driver Copyright (C) Manu Abraham (abraham.manu@gmail.com) */ #include <linux/kernel.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/interrupt.h> #include <asm/io.h> #include <media/dmxdev.h> #include <media/dvbdev.h> #include <media/dvb_demux.h> #include <media/dvb_frontend.h> #include <media/dvb_net.h> #include "mantis_common.h" #include "mantis_hif.h" #include "mantis_link.h" /* temporary due to physical layer stuff */ #include "mantis_reg.h" static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca) { struct mantis_pci *mantis = ca->ca_priv; int rc = 0; if (wait_event_timeout(ca->hif_opdone_wq, ca->hif_event & MANTIS_SBUF_OPDONE, msecs_to_jiffies(500)) == -ERESTARTSYS) { dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Smart buffer operation timeout !", mantis->num); rc = -EREMOTEIO; } dprintk(MANTIS_DEBUG, 1, "Smart Buffer Operation complete"); ca->hif_event &= ~MANTIS_SBUF_OPDONE; return rc; } static int mantis_hif_write_wait(struct mantis_ca *ca) { struct mantis_pci *mantis = ca->ca_priv; u32 opdone = 0, timeout = 0; int rc = 0; if (wait_event_timeout(ca->hif_write_wq, mantis->gpif_status & MANTIS_GPIF_WRACK, msecs_to_jiffies(500)) == -ERESTARTSYS) { dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Write ACK timed out !", mantis->num); rc = -EREMOTEIO; } dprintk(MANTIS_DEBUG, 1, "Write Acknowledged"); mantis->gpif_status &= ~MANTIS_GPIF_WRACK; while (!opdone) { opdone = (mmread(MANTIS_GPIF_STATUS) & MANTIS_SBUF_OPDONE); udelay(500); timeout++; if (timeout > 100) { dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Write operation timed out!", mantis->num); rc = -ETIMEDOUT; break; } } dprintk(MANTIS_DEBUG, 1, "HIF Write success"); return rc; } int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr) { struct mantis_pci *mantis = ca->ca_priv; u32 hif_addr = 0, data, count = 4; dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Read", mantis->num); mutex_lock(&ca->ca_lock); hif_addr &= ~MANTIS_GPIF_PCMCIAREG; hif_addr &= ~MANTIS_GPIF_PCMCIAIOM; hif_addr |= MANTIS_HIF_STATUS; hif_addr |= addr; mmwrite(hif_addr, MANTIS_GPIF_BRADDR); mmwrite(count, MANTIS_GPIF_BRBYTES); udelay(20); mmwrite(hif_addr | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_ADDR); if (mantis_hif_sbuf_opdone_wait(ca) != 0) { dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): GPIF Smart Buffer operation failed", mantis->num); mutex_unlock(&ca->ca_lock); return -EREMOTEIO; } data = mmread(MANTIS_GPIF_DIN); mutex_unlock(&ca->ca_lock); dprintk(MANTIS_DEBUG, 1, "Mem Read: 0x%02x", data); return (data >> 24) & 0xff; } int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data) { struct mantis_slot *slot = ca->slot; struct mantis_pci *mantis = ca->ca_priv; u32 hif_addr = 0; dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF Mem Write", mantis->num); mutex_lock(&ca->ca_lock); hif_addr &= ~MANTIS_GPIF_HIFRDWRN; hif_addr &= ~MANTIS_GPIF_PCMCIAREG; hif_addr &= ~MANTIS_GPIF_PCMCIAIOM; hif_addr |= MANTIS_HIF_STATUS; hif_addr |= addr; mmwrite(slot->slave_cfg, MANTIS_GPIF_CFGSLA); /* Slot0 alone for now */ mmwrite(hif_addr, MANTIS_GPIF_ADDR); mmwrite(data, MANTIS_GPIF_DOUT); if (mantis_hif_write_wait(ca) != 0) { dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num); mutex_unlock(&ca->ca_lock); return -EREMOTEIO; } dprintk(MANTIS_DEBUG, 1, "Mem Write: (0x%02x to 0x%02x)", data, addr); mutex_unlock(&ca->ca_lock); return 0; } int mantis_hif_read_iom(struct mantis_ca *ca, u32 addr) { struct mantis_pci *mantis = ca->ca_priv; u32 data, hif_addr = 0; dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Read", mantis->num); mutex_lock(&ca->ca_lock); hif_addr &= ~MANTIS_GPIF_PCMCIAREG; hif_addr |= MANTIS_GPIF_PCMCIAIOM; hif_addr |= MANTIS_HIF_STATUS; hif_addr |= addr; mmwrite(hif_addr, MANTIS_GPIF_BRADDR); mmwrite(1, MANTIS_GPIF_BRBYTES); udelay(20); mmwrite(hif_addr | MANTIS_GPIF_HIFRDWRN, MANTIS_GPIF_ADDR); if (mantis_hif_sbuf_opdone_wait(ca) != 0) { dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num); mutex_unlock(&ca->ca_lock); return -EREMOTEIO; } data = mmread(MANTIS_GPIF_DIN); dprintk(MANTIS_DEBUG, 1, "I/O Read: 0x%02x", data); udelay(50); mutex_unlock(&ca->ca_lock); return (u8) data; } int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data) { struct mantis_pci *mantis = ca->ca_priv; u32 hif_addr = 0; dprintk(MANTIS_DEBUG, 1, "Adapter(%d) Slot(0): Request HIF I/O Write", mantis->num); mutex_lock(&ca->ca_lock); hif_addr &= ~MANTIS_GPIF_PCMCIAREG; hif_addr &= ~MANTIS_GPIF_HIFRDWRN; hif_addr |= MANTIS_GPIF_PCMCIAIOM; hif_addr |= MANTIS_HIF_STATUS; hif_addr |= addr; mmwrite(hif_addr, MANTIS_GPIF_ADDR); mmwrite(data, MANTIS_GPIF_DOUT); if (mantis_hif_write_wait(ca) != 0) { dprintk(MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num); mutex_unlock(&ca->ca_lock); return -EREMOTEIO; } dprintk(MANTIS_DEBUG, 1, "I/O Write: (0x%02x to 0x%02x)", data, addr); mutex_unlock(&ca->ca_lock); udelay(50); return 0; } int mantis_hif_init(struct mantis_ca *ca) { struct mantis_slot *slot = ca->slot; struct mantis_pci *mantis = ca->ca_priv; u32 irqcfg; slot[0].slave_cfg = 0x70773028; dprintk(MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num); mutex_lock(&ca->ca_lock); irqcfg = mmread(MANTIS_GPIF_IRQCFG); irqcfg = MANTIS_MASK_BRRDY | MANTIS_MASK_WRACK | MANTIS_MASK_EXTIRQ | MANTIS_MASK_WSTO | MANTIS_MASK_OTHERR | MANTIS_MASK_OVFLW; mmwrite(irqcfg, MANTIS_GPIF_IRQCFG); mutex_unlock(&ca->ca_lock); return 0; } void mantis_hif_exit(struct mantis_ca *ca) { struct mantis_pci *mantis = ca->ca_priv; u32 irqcfg; dprintk(MANTIS_ERROR, 1, "Adapter(%d) Exiting Mantis Host Interface", mantis->num); mutex_lock(&ca->ca_lock); irqcfg = mmread(MANTIS_GPIF_IRQCFG); irqcfg &= ~MANTIS_MASK_BRRDY; mmwrite(irqcfg, MANTIS_GPIF_IRQCFG); mutex_unlock(&ca->ca_lock); } |