1c82ee6d3SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 2e8b12f0fSMahesh Rajashekhara /* 3e8b12f0fSMahesh Rajashekhara * Adaptec AAC series RAID controller driver 4e8b12f0fSMahesh Rajashekhara * (c) Copyright 2001 Red Hat Inc. 5e8b12f0fSMahesh Rajashekhara * 6e8b12f0fSMahesh Rajashekhara * based on the old aacraid driver that is.. 7e8b12f0fSMahesh Rajashekhara * Adaptec aacraid device driver for Linux. 8e8b12f0fSMahesh Rajashekhara * 9e8b12f0fSMahesh Rajashekhara * Copyright (c) 2000-2010 Adaptec, Inc. 10f4babba0SRaghava Aditya Renukunta * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) 11f4babba0SRaghava Aditya Renukunta * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) 12e8b12f0fSMahesh Rajashekhara * 13e8b12f0fSMahesh Rajashekhara * Module Name: 14e8b12f0fSMahesh Rajashekhara * src.c 15e8b12f0fSMahesh Rajashekhara * 16e8b12f0fSMahesh Rajashekhara * Abstract: Hardware Device Interface for PMC SRC based controllers 17e8b12f0fSMahesh Rajashekhara */ 18e8b12f0fSMahesh Rajashekhara 19e8b12f0fSMahesh Rajashekhara #include <linux/kernel.h> 20e8b12f0fSMahesh Rajashekhara #include <linux/init.h> 21e8b12f0fSMahesh Rajashekhara #include <linux/types.h> 22e8b12f0fSMahesh Rajashekhara #include <linux/pci.h> 23e8b12f0fSMahesh Rajashekhara #include <linux/spinlock.h> 24e8b12f0fSMahesh Rajashekhara #include <linux/slab.h> 25e8b12f0fSMahesh Rajashekhara #include <linux/blkdev.h> 26e8b12f0fSMahesh Rajashekhara #include <linux/delay.h> 27e8b12f0fSMahesh Rajashekhara #include <linux/completion.h> 28e8b12f0fSMahesh Rajashekhara #include <linux/time.h> 29e8b12f0fSMahesh Rajashekhara #include <linux/interrupt.h> 30e8b12f0fSMahesh Rajashekhara #include <scsi/scsi_host.h> 31e8b12f0fSMahesh Rajashekhara 32e8b12f0fSMahesh Rajashekhara #include "aacraid.h" 33e8b12f0fSMahesh Rajashekhara 34495c0217SMahesh Rajashekhara static int aac_src_get_sync_status(struct aac_dev *dev); 35495c0217SMahesh Rajashekhara 36305974feSkbuild test robot static irqreturn_t aac_src_intr_message(int irq, void *dev_id) 37e8b12f0fSMahesh Rajashekhara { 38495c0217SMahesh Rajashekhara struct aac_msix_ctx *ctx; 39495c0217SMahesh Rajashekhara struct aac_dev *dev; 40e8b12f0fSMahesh Rajashekhara unsigned long bellbits, bellbits_shifted; 41495c0217SMahesh Rajashekhara int vector_no; 42495c0217SMahesh Rajashekhara int isFastResponse, mode; 43e8b12f0fSMahesh Rajashekhara u32 index, handle; 44e8b12f0fSMahesh Rajashekhara 45495c0217SMahesh Rajashekhara ctx = (struct aac_msix_ctx *)dev_id; 46495c0217SMahesh Rajashekhara dev = ctx->dev; 47495c0217SMahesh Rajashekhara vector_no = ctx->vector_no; 48495c0217SMahesh Rajashekhara 49495c0217SMahesh Rajashekhara if (dev->msi_enabled) { 50495c0217SMahesh Rajashekhara mode = AAC_INT_MODE_MSI; 51495c0217SMahesh Rajashekhara if (vector_no == 0) { 52495c0217SMahesh Rajashekhara bellbits = src_readl(dev, MUnit.ODR_MSI); 53495c0217SMahesh Rajashekhara if (bellbits & 0x40000) 54495c0217SMahesh Rajashekhara mode |= AAC_INT_MODE_AIF; 55495c0217SMahesh Rajashekhara if (bellbits & 0x1000) 56495c0217SMahesh Rajashekhara mode |= AAC_INT_MODE_SYNC; 57495c0217SMahesh Rajashekhara } 58495c0217SMahesh Rajashekhara } else { 59495c0217SMahesh Rajashekhara mode = AAC_INT_MODE_INTX; 60e8b12f0fSMahesh Rajashekhara bellbits = src_readl(dev, MUnit.ODR_R); 61e8b12f0fSMahesh Rajashekhara if (bellbits & PmDoorBellResponseSent) { 62e8b12f0fSMahesh Rajashekhara bellbits = PmDoorBellResponseSent; 6385d22bbfSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, bellbits); 6485d22bbfSMahesh Rajashekhara src_readl(dev, MUnit.ODR_C); 65e8b12f0fSMahesh Rajashekhara } else { 66e8b12f0fSMahesh Rajashekhara bellbits_shifted = (bellbits >> SRC_ODR_SHIFT); 6785d22bbfSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, bellbits); 6885d22bbfSMahesh Rajashekhara src_readl(dev, MUnit.ODR_C); 69495c0217SMahesh Rajashekhara 70495c0217SMahesh Rajashekhara if (bellbits_shifted & DoorBellAifPending) 71495c0217SMahesh Rajashekhara mode |= AAC_INT_MODE_AIF; 72495c0217SMahesh Rajashekhara else if (bellbits_shifted & OUTBOUNDDOORBELL_0) 73495c0217SMahesh Rajashekhara mode |= AAC_INT_MODE_SYNC; 74495c0217SMahesh Rajashekhara } 75495c0217SMahesh Rajashekhara } 76495c0217SMahesh Rajashekhara 77495c0217SMahesh Rajashekhara if (mode & AAC_INT_MODE_SYNC) { 7811604612SMahesh Rajashekhara unsigned long sflags; 7911604612SMahesh Rajashekhara struct list_head *entry; 8011604612SMahesh Rajashekhara int send_it = 0; 8185d22bbfSMahesh Rajashekhara extern int aac_sync_mode; 8285d22bbfSMahesh Rajashekhara 83495c0217SMahesh Rajashekhara if (!aac_sync_mode && !dev->msi_enabled) { 84c5bebd82SMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, bellbits); 85c5bebd82SMahesh Rajashekhara src_readl(dev, MUnit.ODR_C); 8685d22bbfSMahesh Rajashekhara } 8711604612SMahesh Rajashekhara 8811604612SMahesh Rajashekhara if (dev->sync_fib) { 8911604612SMahesh Rajashekhara if (dev->sync_fib->callback) 9011604612SMahesh Rajashekhara dev->sync_fib->callback(dev->sync_fib->callback_data, 9111604612SMahesh Rajashekhara dev->sync_fib); 9211604612SMahesh Rajashekhara spin_lock_irqsave(&dev->sync_fib->event_lock, sflags); 9311604612SMahesh Rajashekhara if (dev->sync_fib->flags & FIB_CONTEXT_FLAG_WAIT) { 9411604612SMahesh Rajashekhara dev->management_fib_count--; 95bc127d93SArnd Bergmann complete(&dev->sync_fib->event_wait); 9611604612SMahesh Rajashekhara } 97495c0217SMahesh Rajashekhara spin_unlock_irqrestore(&dev->sync_fib->event_lock, 98495c0217SMahesh Rajashekhara sflags); 9911604612SMahesh Rajashekhara spin_lock_irqsave(&dev->sync_lock, sflags); 10011604612SMahesh Rajashekhara if (!list_empty(&dev->sync_fib_list)) { 10111604612SMahesh Rajashekhara entry = dev->sync_fib_list.next; 102495c0217SMahesh Rajashekhara dev->sync_fib = list_entry(entry, 103495c0217SMahesh Rajashekhara struct fib, 104495c0217SMahesh Rajashekhara fiblink); 10511604612SMahesh Rajashekhara list_del(entry); 10611604612SMahesh Rajashekhara send_it = 1; 10711604612SMahesh Rajashekhara } else { 10811604612SMahesh Rajashekhara dev->sync_fib = NULL; 10911604612SMahesh Rajashekhara } 11011604612SMahesh Rajashekhara spin_unlock_irqrestore(&dev->sync_lock, sflags); 11111604612SMahesh Rajashekhara if (send_it) { 11211604612SMahesh Rajashekhara aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB, 113495c0217SMahesh Rajashekhara (u32)dev->sync_fib->hw_fib_pa, 114495c0217SMahesh Rajashekhara 0, 0, 0, 0, 0, 11511604612SMahesh Rajashekhara NULL, NULL, NULL, NULL, NULL); 11611604612SMahesh Rajashekhara } 11711604612SMahesh Rajashekhara } 118495c0217SMahesh Rajashekhara if (!dev->msi_enabled) 119495c0217SMahesh Rajashekhara mode = 0; 120495c0217SMahesh Rajashekhara 121e8b12f0fSMahesh Rajashekhara } 122e8b12f0fSMahesh Rajashekhara 123495c0217SMahesh Rajashekhara if (mode & AAC_INT_MODE_AIF) { 124495c0217SMahesh Rajashekhara /* handle AIF */ 1253ffd6c5aSRaghava Aditya Renukunta if (dev->sa_firmware) { 1263ffd6c5aSRaghava Aditya Renukunta u32 events = src_readl(dev, MUnit.SCR0); 1273ffd6c5aSRaghava Aditya Renukunta 1283ffd6c5aSRaghava Aditya Renukunta aac_intr_normal(dev, events, 1, 0, NULL); 1293ffd6c5aSRaghava Aditya Renukunta writel(events, &dev->IndexRegs->Mailbox[0]); 1303ffd6c5aSRaghava Aditya Renukunta src_writel(dev, MUnit.IDR, 1 << 23); 1313ffd6c5aSRaghava Aditya Renukunta } else { 1329cb62fa2SRaghava Aditya Renukunta if (dev->aif_thread && dev->fsa_dev) 133495c0217SMahesh Rajashekhara aac_intr_normal(dev, 0, 2, 0, NULL); 1343ffd6c5aSRaghava Aditya Renukunta } 135495c0217SMahesh Rajashekhara if (dev->msi_enabled) 136495c0217SMahesh Rajashekhara aac_src_access_devreg(dev, AAC_CLEAR_AIF_BIT); 137495c0217SMahesh Rajashekhara mode = 0; 138e8b12f0fSMahesh Rajashekhara } 139495c0217SMahesh Rajashekhara 140495c0217SMahesh Rajashekhara if (mode) { 141495c0217SMahesh Rajashekhara index = dev->host_rrq_idx[vector_no]; 142495c0217SMahesh Rajashekhara 143495c0217SMahesh Rajashekhara for (;;) { 144495c0217SMahesh Rajashekhara isFastResponse = 0; 145495c0217SMahesh Rajashekhara /* remove toggle bit (31) */ 1463ffd6c5aSRaghava Aditya Renukunta handle = le32_to_cpu((dev->host_rrq[index]) 1473ffd6c5aSRaghava Aditya Renukunta & 0x7fffffff); 1483ffd6c5aSRaghava Aditya Renukunta /* check fast response bits (30, 1) */ 149495c0217SMahesh Rajashekhara if (handle & 0x40000000) 150495c0217SMahesh Rajashekhara isFastResponse = 1; 151495c0217SMahesh Rajashekhara handle &= 0x0000ffff; 152495c0217SMahesh Rajashekhara if (handle == 0) 153495c0217SMahesh Rajashekhara break; 1543ffd6c5aSRaghava Aditya Renukunta handle >>= 2; 155495c0217SMahesh Rajashekhara if (dev->msi_enabled && dev->max_msix > 1) 156495c0217SMahesh Rajashekhara atomic_dec(&dev->rrq_outstanding[vector_no]); 1573ffd6c5aSRaghava Aditya Renukunta aac_intr_normal(dev, handle, 0, isFastResponse, NULL); 158495c0217SMahesh Rajashekhara dev->host_rrq[index++] = 0; 159495c0217SMahesh Rajashekhara if (index == (vector_no + 1) * dev->vector_cap) 160495c0217SMahesh Rajashekhara index = vector_no * dev->vector_cap; 161495c0217SMahesh Rajashekhara dev->host_rrq_idx[vector_no] = index; 162495c0217SMahesh Rajashekhara } 163495c0217SMahesh Rajashekhara mode = 0; 164495c0217SMahesh Rajashekhara } 165495c0217SMahesh Rajashekhara 166495c0217SMahesh Rajashekhara return IRQ_HANDLED; 167e8b12f0fSMahesh Rajashekhara } 168e8b12f0fSMahesh Rajashekhara 169e8b12f0fSMahesh Rajashekhara /** 170e8b12f0fSMahesh Rajashekhara * aac_src_disable_interrupt - Disable interrupts 171e8b12f0fSMahesh Rajashekhara * @dev: Adapter 172e8b12f0fSMahesh Rajashekhara */ 173e8b12f0fSMahesh Rajashekhara 174e8b12f0fSMahesh Rajashekhara static void aac_src_disable_interrupt(struct aac_dev *dev) 175e8b12f0fSMahesh Rajashekhara { 176e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff); 177e8b12f0fSMahesh Rajashekhara } 178e8b12f0fSMahesh Rajashekhara 179e8b12f0fSMahesh Rajashekhara /** 180e8b12f0fSMahesh Rajashekhara * aac_src_enable_interrupt_message - Enable interrupts 181e8b12f0fSMahesh Rajashekhara * @dev: Adapter 182e8b12f0fSMahesh Rajashekhara */ 183e8b12f0fSMahesh Rajashekhara 184e8b12f0fSMahesh Rajashekhara static void aac_src_enable_interrupt_message(struct aac_dev *dev) 185e8b12f0fSMahesh Rajashekhara { 186495c0217SMahesh Rajashekhara aac_src_access_devreg(dev, AAC_ENABLE_INTERRUPT); 187e8b12f0fSMahesh Rajashekhara } 188e8b12f0fSMahesh Rajashekhara 189e8b12f0fSMahesh Rajashekhara /** 190e8b12f0fSMahesh Rajashekhara * src_sync_cmd - send a command and wait 191e8b12f0fSMahesh Rajashekhara * @dev: Adapter 192e8b12f0fSMahesh Rajashekhara * @command: Command to execute 193e8b12f0fSMahesh Rajashekhara * @p1: first parameter 194a1368911SLee Jones * @p2: second parameter 195a1368911SLee Jones * @p3: third parameter 196a1368911SLee Jones * @p4: forth parameter 197a1368911SLee Jones * @p5: fifth parameter 198a1368911SLee Jones * @p6: sixth parameter 199a1368911SLee Jones * @status: adapter status 200a1368911SLee Jones * @r1: first return value 201a1368911SLee Jones * @r2: second return valu 202a1368911SLee Jones * @r3: third return value 203a1368911SLee Jones * @r4: forth return value 204e8b12f0fSMahesh Rajashekhara * 205e8b12f0fSMahesh Rajashekhara * This routine will send a synchronous command to the adapter and wait 206e8b12f0fSMahesh Rajashekhara * for its completion. 207e8b12f0fSMahesh Rajashekhara */ 208e8b12f0fSMahesh Rajashekhara 209e8b12f0fSMahesh Rajashekhara static int src_sync_cmd(struct aac_dev *dev, u32 command, 210e8b12f0fSMahesh Rajashekhara u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6, 211e8b12f0fSMahesh Rajashekhara u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4) 212e8b12f0fSMahesh Rajashekhara { 213e8b12f0fSMahesh Rajashekhara unsigned long start; 214dafde947SMahesh Rajashekhara unsigned long delay; 215e8b12f0fSMahesh Rajashekhara int ok; 216e8b12f0fSMahesh Rajashekhara 217e8b12f0fSMahesh Rajashekhara /* 218e8b12f0fSMahesh Rajashekhara * Write the command into Mailbox 0 219e8b12f0fSMahesh Rajashekhara */ 220e8b12f0fSMahesh Rajashekhara writel(command, &dev->IndexRegs->Mailbox[0]); 221e8b12f0fSMahesh Rajashekhara /* 222e8b12f0fSMahesh Rajashekhara * Write the parameters into Mailboxes 1 - 6 223e8b12f0fSMahesh Rajashekhara */ 224e8b12f0fSMahesh Rajashekhara writel(p1, &dev->IndexRegs->Mailbox[1]); 225e8b12f0fSMahesh Rajashekhara writel(p2, &dev->IndexRegs->Mailbox[2]); 226e8b12f0fSMahesh Rajashekhara writel(p3, &dev->IndexRegs->Mailbox[3]); 227e8b12f0fSMahesh Rajashekhara writel(p4, &dev->IndexRegs->Mailbox[4]); 228e8b12f0fSMahesh Rajashekhara 229e8b12f0fSMahesh Rajashekhara /* 230e8b12f0fSMahesh Rajashekhara * Clear the synch command doorbell to start on a clean slate. 231e8b12f0fSMahesh Rajashekhara */ 232495c0217SMahesh Rajashekhara if (!dev->msi_enabled) 233495c0217SMahesh Rajashekhara src_writel(dev, 234495c0217SMahesh Rajashekhara MUnit.ODR_C, 235495c0217SMahesh Rajashekhara OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); 236e8b12f0fSMahesh Rajashekhara 237e8b12f0fSMahesh Rajashekhara /* 238e8b12f0fSMahesh Rajashekhara * Disable doorbell interrupts 239e8b12f0fSMahesh Rajashekhara */ 240e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.OIMR, dev->OIMR = 0xffffffff); 241e8b12f0fSMahesh Rajashekhara 242e8b12f0fSMahesh Rajashekhara /* 243e8b12f0fSMahesh Rajashekhara * Force the completion of the mask register write before issuing 244e8b12f0fSMahesh Rajashekhara * the interrupt. 245e8b12f0fSMahesh Rajashekhara */ 246e8b12f0fSMahesh Rajashekhara src_readl(dev, MUnit.OIMR); 247e8b12f0fSMahesh Rajashekhara 248e8b12f0fSMahesh Rajashekhara /* 249e8b12f0fSMahesh Rajashekhara * Signal that there is a new synch command 250e8b12f0fSMahesh Rajashekhara */ 251e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.IDR, INBOUNDDOORBELL_0 << SRC_IDR_SHIFT); 252e8b12f0fSMahesh Rajashekhara 25344f1ce7dSRaghava Aditya Renukunta if ((!dev->sync_mode || command != SEND_SYNCHRONOUS_FIB) && 25444f1ce7dSRaghava Aditya Renukunta !dev->in_soft_reset) { 255e8b12f0fSMahesh Rajashekhara ok = 0; 256e8b12f0fSMahesh Rajashekhara start = jiffies; 257e8b12f0fSMahesh Rajashekhara 258dafde947SMahesh Rajashekhara if (command == IOP_RESET_ALWAYS) { 259dafde947SMahesh Rajashekhara /* Wait up to 10 sec */ 260dafde947SMahesh Rajashekhara delay = 10*HZ; 261dafde947SMahesh Rajashekhara } else { 262dafde947SMahesh Rajashekhara /* Wait up to 5 minutes */ 263dafde947SMahesh Rajashekhara delay = 300*HZ; 264dafde947SMahesh Rajashekhara } 265dafde947SMahesh Rajashekhara while (time_before(jiffies, start+delay)) { 26611604612SMahesh Rajashekhara udelay(5); /* Delay 5 microseconds to let Mon960 get info. */ 26711604612SMahesh Rajashekhara /* 26811604612SMahesh Rajashekhara * Mon960 will set doorbell0 bit when it has completed the command. 269e8b12f0fSMahesh Rajashekhara */ 270495c0217SMahesh Rajashekhara if (aac_src_get_sync_status(dev) & OUTBOUNDDOORBELL_0) { 27111604612SMahesh Rajashekhara /* 27211604612SMahesh Rajashekhara * Clear the doorbell. 27311604612SMahesh Rajashekhara */ 274495c0217SMahesh Rajashekhara if (dev->msi_enabled) 275495c0217SMahesh Rajashekhara aac_src_access_devreg(dev, 276495c0217SMahesh Rajashekhara AAC_CLEAR_SYNC_BIT); 277495c0217SMahesh Rajashekhara else 278495c0217SMahesh Rajashekhara src_writel(dev, 279495c0217SMahesh Rajashekhara MUnit.ODR_C, 280495c0217SMahesh Rajashekhara OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); 281e8b12f0fSMahesh Rajashekhara ok = 1; 282e8b12f0fSMahesh Rajashekhara break; 283e8b12f0fSMahesh Rajashekhara } 28411604612SMahesh Rajashekhara /* 28511604612SMahesh Rajashekhara * Yield the processor in case we are slow 28611604612SMahesh Rajashekhara */ 287e8b12f0fSMahesh Rajashekhara msleep(1); 288e8b12f0fSMahesh Rajashekhara } 289e8b12f0fSMahesh Rajashekhara if (unlikely(ok != 1)) { 29011604612SMahesh Rajashekhara /* 29111604612SMahesh Rajashekhara * Restore interrupt mask even though we timed out 29211604612SMahesh Rajashekhara */ 293e8b12f0fSMahesh Rajashekhara aac_adapter_enable_int(dev); 294e8b12f0fSMahesh Rajashekhara return -ETIMEDOUT; 295e8b12f0fSMahesh Rajashekhara } 29611604612SMahesh Rajashekhara /* 29711604612SMahesh Rajashekhara * Pull the synch status from Mailbox 0. 29811604612SMahesh Rajashekhara */ 299e8b12f0fSMahesh Rajashekhara if (status) 300e8b12f0fSMahesh Rajashekhara *status = readl(&dev->IndexRegs->Mailbox[0]); 301e8b12f0fSMahesh Rajashekhara if (r1) 302e8b12f0fSMahesh Rajashekhara *r1 = readl(&dev->IndexRegs->Mailbox[1]); 303e8b12f0fSMahesh Rajashekhara if (r2) 304e8b12f0fSMahesh Rajashekhara *r2 = readl(&dev->IndexRegs->Mailbox[2]); 305e8b12f0fSMahesh Rajashekhara if (r3) 306e8b12f0fSMahesh Rajashekhara *r3 = readl(&dev->IndexRegs->Mailbox[3]); 307e8b12f0fSMahesh Rajashekhara if (r4) 308e8b12f0fSMahesh Rajashekhara *r4 = readl(&dev->IndexRegs->Mailbox[4]); 309495c0217SMahesh Rajashekhara if (command == GET_COMM_PREFERRED_SETTINGS) 310495c0217SMahesh Rajashekhara dev->max_msix = 311495c0217SMahesh Rajashekhara readl(&dev->IndexRegs->Mailbox[5]) & 0xFFFF; 31211604612SMahesh Rajashekhara /* 31311604612SMahesh Rajashekhara * Clear the synch command doorbell. 31411604612SMahesh Rajashekhara */ 315495c0217SMahesh Rajashekhara if (!dev->msi_enabled) 316495c0217SMahesh Rajashekhara src_writel(dev, 317495c0217SMahesh Rajashekhara MUnit.ODR_C, 318495c0217SMahesh Rajashekhara OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); 31911604612SMahesh Rajashekhara } 320e8b12f0fSMahesh Rajashekhara 32111604612SMahesh Rajashekhara /* 32211604612SMahesh Rajashekhara * Restore interrupt mask 32311604612SMahesh Rajashekhara */ 324e8b12f0fSMahesh Rajashekhara aac_adapter_enable_int(dev); 325e8b12f0fSMahesh Rajashekhara return 0; 326e8b12f0fSMahesh Rajashekhara } 327e8b12f0fSMahesh Rajashekhara 328e8b12f0fSMahesh Rajashekhara /** 329e8b12f0fSMahesh Rajashekhara * aac_src_interrupt_adapter - interrupt adapter 330e8b12f0fSMahesh Rajashekhara * @dev: Adapter 331e8b12f0fSMahesh Rajashekhara * 332e8b12f0fSMahesh Rajashekhara * Send an interrupt to the i960 and breakpoint it. 333e8b12f0fSMahesh Rajashekhara */ 334e8b12f0fSMahesh Rajashekhara 335e8b12f0fSMahesh Rajashekhara static void aac_src_interrupt_adapter(struct aac_dev *dev) 336e8b12f0fSMahesh Rajashekhara { 337e8b12f0fSMahesh Rajashekhara src_sync_cmd(dev, BREAKPOINT_REQUEST, 338e8b12f0fSMahesh Rajashekhara 0, 0, 0, 0, 0, 0, 339e8b12f0fSMahesh Rajashekhara NULL, NULL, NULL, NULL, NULL); 340e8b12f0fSMahesh Rajashekhara } 341e8b12f0fSMahesh Rajashekhara 342e8b12f0fSMahesh Rajashekhara /** 343e8b12f0fSMahesh Rajashekhara * aac_src_notify_adapter - send an event to the adapter 344e8b12f0fSMahesh Rajashekhara * @dev: Adapter 345e8b12f0fSMahesh Rajashekhara * @event: Event to send 346e8b12f0fSMahesh Rajashekhara * 347e8b12f0fSMahesh Rajashekhara * Notify the i960 that something it probably cares about has 348e8b12f0fSMahesh Rajashekhara * happened. 349e8b12f0fSMahesh Rajashekhara */ 350e8b12f0fSMahesh Rajashekhara 351e8b12f0fSMahesh Rajashekhara static void aac_src_notify_adapter(struct aac_dev *dev, u32 event) 352e8b12f0fSMahesh Rajashekhara { 353e8b12f0fSMahesh Rajashekhara switch (event) { 354e8b12f0fSMahesh Rajashekhara 355e8b12f0fSMahesh Rajashekhara case AdapNormCmdQue: 356e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 357e8b12f0fSMahesh Rajashekhara INBOUNDDOORBELL_1 << SRC_ODR_SHIFT); 358e8b12f0fSMahesh Rajashekhara break; 359e8b12f0fSMahesh Rajashekhara case HostNormRespNotFull: 360e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 361e8b12f0fSMahesh Rajashekhara INBOUNDDOORBELL_4 << SRC_ODR_SHIFT); 362e8b12f0fSMahesh Rajashekhara break; 363e8b12f0fSMahesh Rajashekhara case AdapNormRespQue: 364e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 365e8b12f0fSMahesh Rajashekhara INBOUNDDOORBELL_2 << SRC_ODR_SHIFT); 366e8b12f0fSMahesh Rajashekhara break; 367e8b12f0fSMahesh Rajashekhara case HostNormCmdNotFull: 368e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 369e8b12f0fSMahesh Rajashekhara INBOUNDDOORBELL_3 << SRC_ODR_SHIFT); 370e8b12f0fSMahesh Rajashekhara break; 371e8b12f0fSMahesh Rajashekhara case FastIo: 372e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 373e8b12f0fSMahesh Rajashekhara INBOUNDDOORBELL_6 << SRC_ODR_SHIFT); 374e8b12f0fSMahesh Rajashekhara break; 375e8b12f0fSMahesh Rajashekhara case AdapPrintfDone: 376e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 377e8b12f0fSMahesh Rajashekhara INBOUNDDOORBELL_5 << SRC_ODR_SHIFT); 378e8b12f0fSMahesh Rajashekhara break; 379e8b12f0fSMahesh Rajashekhara default: 380e8b12f0fSMahesh Rajashekhara BUG(); 381e8b12f0fSMahesh Rajashekhara break; 382e8b12f0fSMahesh Rajashekhara } 383e8b12f0fSMahesh Rajashekhara } 384e8b12f0fSMahesh Rajashekhara 385e8b12f0fSMahesh Rajashekhara /** 386e8b12f0fSMahesh Rajashekhara * aac_src_start_adapter - activate adapter 387e8b12f0fSMahesh Rajashekhara * @dev: Adapter 388e8b12f0fSMahesh Rajashekhara * 389e8b12f0fSMahesh Rajashekhara * Start up processing on an i960 based AAC adapter 390e8b12f0fSMahesh Rajashekhara */ 391e8b12f0fSMahesh Rajashekhara 392e8b12f0fSMahesh Rajashekhara static void aac_src_start_adapter(struct aac_dev *dev) 393e8b12f0fSMahesh Rajashekhara { 394d1ef4da8SRaghava Aditya Renukunta union aac_init *init; 395495c0217SMahesh Rajashekhara int i; 396e8b12f0fSMahesh Rajashekhara 39785d22bbfSMahesh Rajashekhara /* reset host_rrq_idx first */ 398495c0217SMahesh Rajashekhara for (i = 0; i < dev->max_msix; i++) { 399495c0217SMahesh Rajashekhara dev->host_rrq_idx[i] = i * dev->vector_cap; 400495c0217SMahesh Rajashekhara atomic_set(&dev->rrq_outstanding[i], 0); 401495c0217SMahesh Rajashekhara } 4023ffd6c5aSRaghava Aditya Renukunta atomic_set(&dev->msix_counter, 0); 403495c0217SMahesh Rajashekhara dev->fibs_pushed_no = 0; 40485d22bbfSMahesh Rajashekhara 405e8b12f0fSMahesh Rajashekhara init = dev->init; 406d1ef4da8SRaghava Aditya Renukunta if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) { 40738150f7aSArnd Bergmann init->r8.host_elapsed_seconds = 40838150f7aSArnd Bergmann cpu_to_le32(ktime_get_real_seconds()); 409d1ef4da8SRaghava Aditya Renukunta src_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, 41080a94bb3SArnd Bergmann lower_32_bits(dev->init_pa), 41180a94bb3SArnd Bergmann upper_32_bits(dev->init_pa), 412d1ef4da8SRaghava Aditya Renukunta sizeof(struct _r8) + 413d1ef4da8SRaghava Aditya Renukunta (AAC_MAX_HRRQ - 1) * sizeof(struct _rrq), 414d1ef4da8SRaghava Aditya Renukunta 0, 0, 0, NULL, NULL, NULL, NULL, NULL); 415d1ef4da8SRaghava Aditya Renukunta } else { 41638150f7aSArnd Bergmann init->r7.host_elapsed_seconds = 41738150f7aSArnd Bergmann cpu_to_le32(ktime_get_real_seconds()); 418d1ef4da8SRaghava Aditya Renukunta // We can only use a 32 bit address here 419d1ef4da8SRaghava Aditya Renukunta src_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, 420d1ef4da8SRaghava Aditya Renukunta (u32)(ulong)dev->init_pa, 0, 0, 0, 0, 0, 421d1ef4da8SRaghava Aditya Renukunta NULL, NULL, NULL, NULL, NULL); 422d1ef4da8SRaghava Aditya Renukunta } 423e8b12f0fSMahesh Rajashekhara 424e8b12f0fSMahesh Rajashekhara } 425e8b12f0fSMahesh Rajashekhara 426e8b12f0fSMahesh Rajashekhara /** 427e8b12f0fSMahesh Rajashekhara * aac_src_check_health 428e8b12f0fSMahesh Rajashekhara * @dev: device to check if healthy 429e8b12f0fSMahesh Rajashekhara * 430e8b12f0fSMahesh Rajashekhara * Will attempt to determine if the specified adapter is alive and 431e8b12f0fSMahesh Rajashekhara * capable of handling requests, returning 0 if alive. 432e8b12f0fSMahesh Rajashekhara */ 433e8b12f0fSMahesh Rajashekhara static int aac_src_check_health(struct aac_dev *dev) 434e8b12f0fSMahesh Rajashekhara { 435e8b12f0fSMahesh Rajashekhara u32 status = src_readl(dev, MUnit.OMR); 436e8b12f0fSMahesh Rajashekhara 437e8b12f0fSMahesh Rajashekhara /* 438e8b12f0fSMahesh Rajashekhara * Check to see if the board panic'd. 439e8b12f0fSMahesh Rajashekhara */ 440e8b12f0fSMahesh Rajashekhara if (unlikely(status & KERNEL_PANIC)) 441c421530bSRaghava Aditya Renukunta goto err_blink; 442c421530bSRaghava Aditya Renukunta 443c421530bSRaghava Aditya Renukunta /* 444c421530bSRaghava Aditya Renukunta * Check to see if the board failed any self tests. 445c421530bSRaghava Aditya Renukunta */ 446c421530bSRaghava Aditya Renukunta if (unlikely(status & SELF_TEST_FAILED)) 447c421530bSRaghava Aditya Renukunta goto err_out; 448c421530bSRaghava Aditya Renukunta 449c421530bSRaghava Aditya Renukunta /* 450c421530bSRaghava Aditya Renukunta * Check to see if the board failed any self tests. 451c421530bSRaghava Aditya Renukunta */ 452c421530bSRaghava Aditya Renukunta if (unlikely(status & MONITOR_PANIC)) 453c421530bSRaghava Aditya Renukunta goto err_out; 454c421530bSRaghava Aditya Renukunta 455e8b12f0fSMahesh Rajashekhara /* 456e8b12f0fSMahesh Rajashekhara * Wait for the adapter to be up and running. 457e8b12f0fSMahesh Rajashekhara */ 458e8b12f0fSMahesh Rajashekhara if (unlikely(!(status & KERNEL_UP_AND_RUNNING))) 459e8b12f0fSMahesh Rajashekhara return -3; 460e8b12f0fSMahesh Rajashekhara /* 461e8b12f0fSMahesh Rajashekhara * Everything is OK 462e8b12f0fSMahesh Rajashekhara */ 463e8b12f0fSMahesh Rajashekhara return 0; 464c421530bSRaghava Aditya Renukunta 465c421530bSRaghava Aditya Renukunta err_out: 466c421530bSRaghava Aditya Renukunta return -1; 467c421530bSRaghava Aditya Renukunta 468c421530bSRaghava Aditya Renukunta err_blink: 469934767c5SRaghava Aditya Renukunta return (status >> 16) & 0xFF; 470e8b12f0fSMahesh Rajashekhara } 471e8b12f0fSMahesh Rajashekhara 472423400e6SRaghava Aditya Renukunta static inline u32 aac_get_vector(struct aac_dev *dev) 473423400e6SRaghava Aditya Renukunta { 474423400e6SRaghava Aditya Renukunta return atomic_inc_return(&dev->msix_counter)%dev->max_msix; 475423400e6SRaghava Aditya Renukunta } 476423400e6SRaghava Aditya Renukunta 477e8b12f0fSMahesh Rajashekhara /** 478e8b12f0fSMahesh Rajashekhara * aac_src_deliver_message 479e8b12f0fSMahesh Rajashekhara * @fib: fib to issue 480e8b12f0fSMahesh Rajashekhara * 481e8b12f0fSMahesh Rajashekhara * Will send a fib, returning 0 if successful. 482e8b12f0fSMahesh Rajashekhara */ 483e8b12f0fSMahesh Rajashekhara static int aac_src_deliver_message(struct fib *fib) 484e8b12f0fSMahesh Rajashekhara { 485e8b12f0fSMahesh Rajashekhara struct aac_dev *dev = fib->dev; 486e8b12f0fSMahesh Rajashekhara struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue]; 487e8b12f0fSMahesh Rajashekhara u32 fibsize; 488b5f1758fSBen Collins dma_addr_t address; 489e8b12f0fSMahesh Rajashekhara struct aac_fib_xporthdr *pFibX; 490423400e6SRaghava Aditya Renukunta int native_hba; 491c6992781SMahesh Rajashekhara #if !defined(writeq) 492c6992781SMahesh Rajashekhara unsigned long flags; 493c6992781SMahesh Rajashekhara #endif 494c6992781SMahesh Rajashekhara 4953f4ce057SRaghava Aditya Renukunta u16 vector_no; 496e8b12f0fSMahesh Rajashekhara 497ef616233SMahesh Rajashekhara atomic_inc(&q->numpending); 498e8b12f0fSMahesh Rajashekhara 499423400e6SRaghava Aditya Renukunta native_hba = (fib->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) ? 1 : 0; 500423400e6SRaghava Aditya Renukunta 501423400e6SRaghava Aditya Renukunta 502423400e6SRaghava Aditya Renukunta if (dev->msi_enabled && dev->max_msix > 1 && 503423400e6SRaghava Aditya Renukunta (native_hba || fib->hw_fib_va->header.Command != AifRequest)) { 504423400e6SRaghava Aditya Renukunta 505423400e6SRaghava Aditya Renukunta if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) 506423400e6SRaghava Aditya Renukunta && dev->sa_firmware) 507423400e6SRaghava Aditya Renukunta vector_no = aac_get_vector(dev); 508423400e6SRaghava Aditya Renukunta else 5093f4ce057SRaghava Aditya Renukunta vector_no = fib->vector_no; 510423400e6SRaghava Aditya Renukunta 511423400e6SRaghava Aditya Renukunta if (native_hba) { 512954b2b5aSRaghava Aditya Renukunta if (fib->flags & FIB_CONTEXT_FLAG_NATIVE_HBA_TMF) { 513954b2b5aSRaghava Aditya Renukunta struct aac_hba_tm_req *tm_req; 514954b2b5aSRaghava Aditya Renukunta 515954b2b5aSRaghava Aditya Renukunta tm_req = (struct aac_hba_tm_req *) 516954b2b5aSRaghava Aditya Renukunta fib->hw_fib_va; 517954b2b5aSRaghava Aditya Renukunta if (tm_req->iu_type == 518954b2b5aSRaghava Aditya Renukunta HBA_IU_TYPE_SCSI_TM_REQ) { 519954b2b5aSRaghava Aditya Renukunta ((struct aac_hba_tm_req *) 520954b2b5aSRaghava Aditya Renukunta fib->hw_fib_va)->reply_qid 521423400e6SRaghava Aditya Renukunta = vector_no; 522954b2b5aSRaghava Aditya Renukunta ((struct aac_hba_tm_req *) 523954b2b5aSRaghava Aditya Renukunta fib->hw_fib_va)->request_id 524423400e6SRaghava Aditya Renukunta += (vector_no << 16); 525423400e6SRaghava Aditya Renukunta } else { 526954b2b5aSRaghava Aditya Renukunta ((struct aac_hba_reset_req *) 527954b2b5aSRaghava Aditya Renukunta fib->hw_fib_va)->reply_qid 528954b2b5aSRaghava Aditya Renukunta = vector_no; 529954b2b5aSRaghava Aditya Renukunta ((struct aac_hba_reset_req *) 530954b2b5aSRaghava Aditya Renukunta fib->hw_fib_va)->request_id 531954b2b5aSRaghava Aditya Renukunta += (vector_no << 16); 532954b2b5aSRaghava Aditya Renukunta } 533954b2b5aSRaghava Aditya Renukunta } else { 534954b2b5aSRaghava Aditya Renukunta ((struct aac_hba_cmd_req *) 535954b2b5aSRaghava Aditya Renukunta fib->hw_fib_va)->reply_qid 536954b2b5aSRaghava Aditya Renukunta = vector_no; 537954b2b5aSRaghava Aditya Renukunta ((struct aac_hba_cmd_req *) 538954b2b5aSRaghava Aditya Renukunta fib->hw_fib_va)->request_id 539954b2b5aSRaghava Aditya Renukunta += (vector_no << 16); 540954b2b5aSRaghava Aditya Renukunta } 541954b2b5aSRaghava Aditya Renukunta } else { 542495c0217SMahesh Rajashekhara fib->hw_fib_va->header.Handle += (vector_no << 16); 543423400e6SRaghava Aditya Renukunta } 5443f4ce057SRaghava Aditya Renukunta } else { 5453f4ce057SRaghava Aditya Renukunta vector_no = 0; 546495c0217SMahesh Rajashekhara } 547495c0217SMahesh Rajashekhara 5483f4ce057SRaghava Aditya Renukunta atomic_inc(&dev->rrq_outstanding[vector_no]); 5493f4ce057SRaghava Aditya Renukunta 550423400e6SRaghava Aditya Renukunta if (native_hba) { 551423400e6SRaghava Aditya Renukunta address = fib->hw_fib_pa; 552423400e6SRaghava Aditya Renukunta fibsize = (fib->hbacmd_size + 127) / 128 - 1; 553423400e6SRaghava Aditya Renukunta if (fibsize > 31) 554423400e6SRaghava Aditya Renukunta fibsize = 31; 555423400e6SRaghava Aditya Renukunta address |= fibsize; 556423400e6SRaghava Aditya Renukunta #if defined(writeq) 557423400e6SRaghava Aditya Renukunta src_writeq(dev, MUnit.IQN_L, (u64)address); 558423400e6SRaghava Aditya Renukunta #else 559423400e6SRaghava Aditya Renukunta spin_lock_irqsave(&fib->dev->iq_lock, flags); 560423400e6SRaghava Aditya Renukunta src_writel(dev, MUnit.IQN_H, 561423400e6SRaghava Aditya Renukunta upper_32_bits(address) & 0xffffffff); 562423400e6SRaghava Aditya Renukunta src_writel(dev, MUnit.IQN_L, address & 0xffffffff); 563423400e6SRaghava Aditya Renukunta spin_unlock_irqrestore(&fib->dev->iq_lock, flags); 564423400e6SRaghava Aditya Renukunta #endif 565423400e6SRaghava Aditya Renukunta } else { 566423400e6SRaghava Aditya Renukunta if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2 || 567423400e6SRaghava Aditya Renukunta dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) { 56885d22bbfSMahesh Rajashekhara /* Calculate the amount to the fibsize bits */ 569423400e6SRaghava Aditya Renukunta fibsize = (le16_to_cpu(fib->hw_fib_va->header.Size) 570423400e6SRaghava Aditya Renukunta + 127) / 128 - 1; 57185d22bbfSMahesh Rajashekhara /* New FIB header, 32-bit */ 57285d22bbfSMahesh Rajashekhara address = fib->hw_fib_pa; 57385d22bbfSMahesh Rajashekhara fib->hw_fib_va->header.StructType = FIB_MAGIC2; 574423400e6SRaghava Aditya Renukunta fib->hw_fib_va->header.SenderFibAddress = 575423400e6SRaghava Aditya Renukunta cpu_to_le32((u32)address); 57685d22bbfSMahesh Rajashekhara fib->hw_fib_va->header.u.TimeStamp = 0; 57780a94bb3SArnd Bergmann WARN_ON(upper_32_bits(address) != 0L); 57885d22bbfSMahesh Rajashekhara } else { 579e8b12f0fSMahesh Rajashekhara /* Calculate the amount to the fibsize bits */ 580423400e6SRaghava Aditya Renukunta fibsize = (sizeof(struct aac_fib_xporthdr) + 581423400e6SRaghava Aditya Renukunta le16_to_cpu(fib->hw_fib_va->header.Size) 582423400e6SRaghava Aditya Renukunta + 127) / 128 - 1; 583e8b12f0fSMahesh Rajashekhara /* Fill XPORT header */ 584423400e6SRaghava Aditya Renukunta pFibX = (struct aac_fib_xporthdr *) 585423400e6SRaghava Aditya Renukunta ((unsigned char *)fib->hw_fib_va - 586423400e6SRaghava Aditya Renukunta sizeof(struct aac_fib_xporthdr)); 587423400e6SRaghava Aditya Renukunta pFibX->Handle = fib->hw_fib_va->header.Handle; 588423400e6SRaghava Aditya Renukunta pFibX->HostAddress = 589423400e6SRaghava Aditya Renukunta cpu_to_le64((u64)fib->hw_fib_pa); 590423400e6SRaghava Aditya Renukunta pFibX->Size = cpu_to_le32( 591423400e6SRaghava Aditya Renukunta le16_to_cpu(fib->hw_fib_va->header.Size)); 592423400e6SRaghava Aditya Renukunta address = fib->hw_fib_pa - 593423400e6SRaghava Aditya Renukunta (u64)sizeof(struct aac_fib_xporthdr); 59485d22bbfSMahesh Rajashekhara } 595423400e6SRaghava Aditya Renukunta if (fibsize > 31) 596423400e6SRaghava Aditya Renukunta fibsize = 31; 597423400e6SRaghava Aditya Renukunta address |= fibsize; 598423400e6SRaghava Aditya Renukunta 599c6992781SMahesh Rajashekhara #if defined(writeq) 600c6992781SMahesh Rajashekhara src_writeq(dev, MUnit.IQ_L, (u64)address); 601c6992781SMahesh Rajashekhara #else 602c6992781SMahesh Rajashekhara spin_lock_irqsave(&fib->dev->iq_lock, flags); 603423400e6SRaghava Aditya Renukunta src_writel(dev, MUnit.IQ_H, 604423400e6SRaghava Aditya Renukunta upper_32_bits(address) & 0xffffffff); 605b5f1758fSBen Collins src_writel(dev, MUnit.IQ_L, address & 0xffffffff); 606c6992781SMahesh Rajashekhara spin_unlock_irqrestore(&fib->dev->iq_lock, flags); 607c6992781SMahesh Rajashekhara #endif 608423400e6SRaghava Aditya Renukunta } 609e8b12f0fSMahesh Rajashekhara return 0; 610e8b12f0fSMahesh Rajashekhara } 611e8b12f0fSMahesh Rajashekhara 612e8b12f0fSMahesh Rajashekhara /** 613e8b12f0fSMahesh Rajashekhara * aac_src_ioremap 614a1368911SLee Jones * @dev: device ioremap 615e8b12f0fSMahesh Rajashekhara * @size: mapping resize request 616e8b12f0fSMahesh Rajashekhara * 617e8b12f0fSMahesh Rajashekhara */ 618e8b12f0fSMahesh Rajashekhara static int aac_src_ioremap(struct aac_dev *dev, u32 size) 619e8b12f0fSMahesh Rajashekhara { 620e8b12f0fSMahesh Rajashekhara if (!size) { 62171552505STomas Henzl iounmap(dev->regs.src.bar1); 62271552505STomas Henzl dev->regs.src.bar1 = NULL; 623e8b12f0fSMahesh Rajashekhara iounmap(dev->regs.src.bar0); 62411604612SMahesh Rajashekhara dev->base = dev->regs.src.bar0 = NULL; 625e8b12f0fSMahesh Rajashekhara return 0; 626e8b12f0fSMahesh Rajashekhara } 627e8b12f0fSMahesh Rajashekhara dev->regs.src.bar1 = ioremap(pci_resource_start(dev->pdev, 2), 628e8b12f0fSMahesh Rajashekhara AAC_MIN_SRC_BAR1_SIZE); 629e8b12f0fSMahesh Rajashekhara dev->base = NULL; 630e8b12f0fSMahesh Rajashekhara if (dev->regs.src.bar1 == NULL) 631e8b12f0fSMahesh Rajashekhara return -1; 632ff08784bSBen Collins dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size); 633e8b12f0fSMahesh Rajashekhara if (dev->base == NULL) { 634e8b12f0fSMahesh Rajashekhara iounmap(dev->regs.src.bar1); 635e8b12f0fSMahesh Rajashekhara dev->regs.src.bar1 = NULL; 636e8b12f0fSMahesh Rajashekhara return -1; 637e8b12f0fSMahesh Rajashekhara } 638e8b12f0fSMahesh Rajashekhara dev->IndexRegs = &((struct src_registers __iomem *) 63911604612SMahesh Rajashekhara dev->base)->u.tupelo.IndexRegs; 64011604612SMahesh Rajashekhara return 0; 64111604612SMahesh Rajashekhara } 64211604612SMahesh Rajashekhara 64311604612SMahesh Rajashekhara /** 64411604612SMahesh Rajashekhara * aac_srcv_ioremap 645a1368911SLee Jones * @dev: device ioremap 64611604612SMahesh Rajashekhara * @size: mapping resize request 64711604612SMahesh Rajashekhara * 64811604612SMahesh Rajashekhara */ 64911604612SMahesh Rajashekhara static int aac_srcv_ioremap(struct aac_dev *dev, u32 size) 65011604612SMahesh Rajashekhara { 65111604612SMahesh Rajashekhara if (!size) { 65211604612SMahesh Rajashekhara iounmap(dev->regs.src.bar0); 65311604612SMahesh Rajashekhara dev->base = dev->regs.src.bar0 = NULL; 65411604612SMahesh Rajashekhara return 0; 65511604612SMahesh Rajashekhara } 6563ffd6c5aSRaghava Aditya Renukunta 6573ffd6c5aSRaghava Aditya Renukunta dev->regs.src.bar1 = 6583ffd6c5aSRaghava Aditya Renukunta ioremap(pci_resource_start(dev->pdev, 2), AAC_MIN_SRCV_BAR1_SIZE); 6593ffd6c5aSRaghava Aditya Renukunta dev->base = NULL; 6603ffd6c5aSRaghava Aditya Renukunta if (dev->regs.src.bar1 == NULL) 66111604612SMahesh Rajashekhara return -1; 6623ffd6c5aSRaghava Aditya Renukunta dev->base = dev->regs.src.bar0 = ioremap(dev->base_start, size); 6633ffd6c5aSRaghava Aditya Renukunta if (dev->base == NULL) { 6643ffd6c5aSRaghava Aditya Renukunta iounmap(dev->regs.src.bar1); 6653ffd6c5aSRaghava Aditya Renukunta dev->regs.src.bar1 = NULL; 6663ffd6c5aSRaghava Aditya Renukunta return -1; 6673ffd6c5aSRaghava Aditya Renukunta } 66811604612SMahesh Rajashekhara dev->IndexRegs = &((struct src_registers __iomem *) 66911604612SMahesh Rajashekhara dev->base)->u.denali.IndexRegs; 670e8b12f0fSMahesh Rajashekhara return 0; 671e8b12f0fSMahesh Rajashekhara } 672e8b12f0fSMahesh Rajashekhara 673a7e2c642SRaghava Aditya Renukunta void aac_set_intx_mode(struct aac_dev *dev) 67431364329SRaghava Aditya Renukunta { 67531364329SRaghava Aditya Renukunta if (dev->msi_enabled) { 67631364329SRaghava Aditya Renukunta aac_src_access_devreg(dev, AAC_ENABLE_INTX); 67731364329SRaghava Aditya Renukunta dev->msi_enabled = 0; 67831364329SRaghava Aditya Renukunta msleep(5000); /* Delay 5 seconds */ 67931364329SRaghava Aditya Renukunta } 68031364329SRaghava Aditya Renukunta } 68131364329SRaghava Aditya Renukunta 682a5799d74SRaghava Aditya Renukunta static void aac_clear_omr(struct aac_dev *dev) 683a5799d74SRaghava Aditya Renukunta { 684a5799d74SRaghava Aditya Renukunta u32 omr_value = 0; 685a5799d74SRaghava Aditya Renukunta 686a5799d74SRaghava Aditya Renukunta omr_value = src_readl(dev, MUnit.OMR); 687a5799d74SRaghava Aditya Renukunta 688a5799d74SRaghava Aditya Renukunta /* 689a5799d74SRaghava Aditya Renukunta * Check for PCI Errors or Kernel Panic 690a5799d74SRaghava Aditya Renukunta */ 691a5799d74SRaghava Aditya Renukunta if ((omr_value == INVALID_OMR) || (omr_value & KERNEL_PANIC)) 692a5799d74SRaghava Aditya Renukunta omr_value = 0; 693a5799d74SRaghava Aditya Renukunta 694a5799d74SRaghava Aditya Renukunta /* 695a5799d74SRaghava Aditya Renukunta * Preserve MSIX Value if any 696a5799d74SRaghava Aditya Renukunta */ 697a5799d74SRaghava Aditya Renukunta src_writel(dev, MUnit.OMR, omr_value & AAC_INT_MODE_MSIX); 698a5799d74SRaghava Aditya Renukunta src_readl(dev, MUnit.OMR); 699a5799d74SRaghava Aditya Renukunta } 700a5799d74SRaghava Aditya Renukunta 70109624645SRaghava Aditya Renukunta static void aac_dump_fw_fib_iop_reset(struct aac_dev *dev) 70209624645SRaghava Aditya Renukunta { 70309624645SRaghava Aditya Renukunta __le32 supported_options3; 70409624645SRaghava Aditya Renukunta 70509624645SRaghava Aditya Renukunta if (!aac_fib_dump) 70609624645SRaghava Aditya Renukunta return; 70709624645SRaghava Aditya Renukunta 70809624645SRaghava Aditya Renukunta supported_options3 = dev->supplement_adapter_info.supported_options3; 70909624645SRaghava Aditya Renukunta if (!(supported_options3 & AAC_OPTION_SUPPORTED3_IOP_RESET_FIB_DUMP)) 71009624645SRaghava Aditya Renukunta return; 71109624645SRaghava Aditya Renukunta 71209624645SRaghava Aditya Renukunta aac_adapter_sync_cmd(dev, IOP_RESET_FW_FIB_DUMP, 71309624645SRaghava Aditya Renukunta 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL); 71409624645SRaghava Aditya Renukunta } 71509624645SRaghava Aditya Renukunta 7160e9973edSRaghava Aditya Renukunta static bool aac_is_ctrl_up_and_running(struct aac_dev *dev) 7170e9973edSRaghava Aditya Renukunta { 7180e9973edSRaghava Aditya Renukunta bool ctrl_up = true; 7190e9973edSRaghava Aditya Renukunta unsigned long status, start; 7200e9973edSRaghava Aditya Renukunta bool is_up = false; 7210e9973edSRaghava Aditya Renukunta 7220e9973edSRaghava Aditya Renukunta start = jiffies; 7230e9973edSRaghava Aditya Renukunta do { 7240e9973edSRaghava Aditya Renukunta schedule(); 7250e9973edSRaghava Aditya Renukunta status = src_readl(dev, MUnit.OMR); 7260e9973edSRaghava Aditya Renukunta 7270e9973edSRaghava Aditya Renukunta if (status == 0xffffffff) 7280e9973edSRaghava Aditya Renukunta status = 0; 7290e9973edSRaghava Aditya Renukunta 7300e9973edSRaghava Aditya Renukunta if (status & KERNEL_BOOTING) { 7310e9973edSRaghava Aditya Renukunta start = jiffies; 7320e9973edSRaghava Aditya Renukunta continue; 7330e9973edSRaghava Aditya Renukunta } 7340e9973edSRaghava Aditya Renukunta 7350e9973edSRaghava Aditya Renukunta if (time_after(jiffies, start+HZ*SOFT_RESET_TIME)) { 7360e9973edSRaghava Aditya Renukunta ctrl_up = false; 7370e9973edSRaghava Aditya Renukunta break; 7380e9973edSRaghava Aditya Renukunta } 7390e9973edSRaghava Aditya Renukunta 7400e9973edSRaghava Aditya Renukunta is_up = status & KERNEL_UP_AND_RUNNING; 7410e9973edSRaghava Aditya Renukunta 7420e9973edSRaghava Aditya Renukunta } while (!is_up); 7430e9973edSRaghava Aditya Renukunta 7440e9973edSRaghava Aditya Renukunta return ctrl_up; 7450e9973edSRaghava Aditya Renukunta } 7460e9973edSRaghava Aditya Renukunta 747c02a3342SBalsundar P static void aac_src_drop_io(struct aac_dev *dev) 748c02a3342SBalsundar P { 749c02a3342SBalsundar P if (!dev->soft_reset_support) 750c02a3342SBalsundar P return; 751c02a3342SBalsundar P 752c02a3342SBalsundar P aac_adapter_sync_cmd(dev, DROP_IO, 753c02a3342SBalsundar P 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL); 754c02a3342SBalsundar P } 755c02a3342SBalsundar P 75680c7d8a5SRaghava Aditya Renukunta static void aac_notify_fw_of_iop_reset(struct aac_dev *dev) 757e8b12f0fSMahesh Rajashekhara { 75880c7d8a5SRaghava Aditya Renukunta aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS, 0, 0, 0, 0, 0, 0, NULL, 75980c7d8a5SRaghava Aditya Renukunta NULL, NULL, NULL, NULL); 760c02a3342SBalsundar P aac_src_drop_io(dev); 76180c7d8a5SRaghava Aditya Renukunta } 762e8b12f0fSMahesh Rajashekhara 76380c7d8a5SRaghava Aditya Renukunta static void aac_send_iop_reset(struct aac_dev *dev) 76480c7d8a5SRaghava Aditya Renukunta { 76509624645SRaghava Aditya Renukunta aac_dump_fw_fib_iop_reset(dev); 76609624645SRaghava Aditya Renukunta 76780c7d8a5SRaghava Aditya Renukunta aac_notify_fw_of_iop_reset(dev); 76831364329SRaghava Aditya Renukunta 76931364329SRaghava Aditya Renukunta aac_set_intx_mode(dev); 770495c0217SMahesh Rajashekhara 771a5799d74SRaghava Aditya Renukunta aac_clear_omr(dev); 772a5799d74SRaghava Aditya Renukunta 7736b24d425SRaghava Aditya Renukunta src_writel(dev, MUnit.IDR, IOP_SRC_RESET_MASK); 774d1b49093SGuilherme G. Piccoli 775d1b49093SGuilherme G. Piccoli msleep(5000); 776e8b12f0fSMahesh Rajashekhara } 777e8b12f0fSMahesh Rajashekhara 77831364329SRaghava Aditya Renukunta static void aac_send_hardware_soft_reset(struct aac_dev *dev) 77931364329SRaghava Aditya Renukunta { 78031364329SRaghava Aditya Renukunta u_int32_t val; 78131364329SRaghava Aditya Renukunta 782a5799d74SRaghava Aditya Renukunta aac_clear_omr(dev); 78331364329SRaghava Aditya Renukunta val = readl(((char *)(dev->base) + IBW_SWR_OFFSET)); 78431364329SRaghava Aditya Renukunta val |= 0x01; 78531364329SRaghava Aditya Renukunta writel(val, ((char *)(dev->base) + IBW_SWR_OFFSET)); 78631364329SRaghava Aditya Renukunta msleep_interruptible(20000); 78731364329SRaghava Aditya Renukunta } 78831364329SRaghava Aditya Renukunta 78931364329SRaghava Aditya Renukunta static int aac_src_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type) 79031364329SRaghava Aditya Renukunta { 7910e9973edSRaghava Aditya Renukunta bool is_ctrl_up; 79277cb6d5eSRaghava Aditya Renukunta int ret = 0; 79331364329SRaghava Aditya Renukunta 79431364329SRaghava Aditya Renukunta if (bled < 0) 79531364329SRaghava Aditya Renukunta goto invalid_out; 79631364329SRaghava Aditya Renukunta 79731364329SRaghava Aditya Renukunta if (bled) 7984a76be0dSRaghava Aditya Renukunta dev_err(&dev->pdev->dev, "adapter kernel panic'd %x.\n", bled); 79931364329SRaghava Aditya Renukunta 800146aa178SRaghava Aditya Renukunta /* 801146aa178SRaghava Aditya Renukunta * When there is a BlinkLED, IOP_RESET has not effect 802146aa178SRaghava Aditya Renukunta */ 803146aa178SRaghava Aditya Renukunta if (bled >= 2 && dev->sa_firmware && reset_type & HW_IOP_RESET) 804146aa178SRaghava Aditya Renukunta reset_type &= ~HW_IOP_RESET; 805146aa178SRaghava Aditya Renukunta 80631364329SRaghava Aditya Renukunta dev->a_ops.adapter_enable_int = aac_src_disable_interrupt; 80731364329SRaghava Aditya Renukunta 8084a76be0dSRaghava Aditya Renukunta dev_err(&dev->pdev->dev, "Controller reset type is %d\n", reset_type); 8094a76be0dSRaghava Aditya Renukunta 8105aa60732SRaghava Aditya Renukunta if (reset_type & HW_IOP_RESET) { 8114a76be0dSRaghava Aditya Renukunta dev_info(&dev->pdev->dev, "Issuing IOP reset\n"); 81280c7d8a5SRaghava Aditya Renukunta aac_send_iop_reset(dev); 8130e9973edSRaghava Aditya Renukunta 8140e9973edSRaghava Aditya Renukunta /* 8150e9973edSRaghava Aditya Renukunta * Creates a delay or wait till up and running comes thru 8160e9973edSRaghava Aditya Renukunta */ 8170e9973edSRaghava Aditya Renukunta is_ctrl_up = aac_is_ctrl_up_and_running(dev); 8180e9973edSRaghava Aditya Renukunta if (!is_ctrl_up) 8190e9973edSRaghava Aditya Renukunta dev_err(&dev->pdev->dev, "IOP reset failed\n"); 8204a76be0dSRaghava Aditya Renukunta else { 821bc8282a7SMasanari Iida dev_info(&dev->pdev->dev, "IOP reset succeeded\n"); 8220e9973edSRaghava Aditya Renukunta goto set_startup; 8235aa60732SRaghava Aditya Renukunta } 8244a76be0dSRaghava Aditya Renukunta } 8250e9973edSRaghava Aditya Renukunta 82677cb6d5eSRaghava Aditya Renukunta if (!dev->sa_firmware) { 8274a76be0dSRaghava Aditya Renukunta dev_err(&dev->pdev->dev, "ARC Reset attempt failed\n"); 82877cb6d5eSRaghava Aditya Renukunta ret = -ENODEV; 82977cb6d5eSRaghava Aditya Renukunta goto out; 83077cb6d5eSRaghava Aditya Renukunta } 83177cb6d5eSRaghava Aditya Renukunta 8325aa60732SRaghava Aditya Renukunta if (reset_type & HW_SOFT_RESET) { 8334a76be0dSRaghava Aditya Renukunta dev_info(&dev->pdev->dev, "Issuing SOFT reset\n"); 83431364329SRaghava Aditya Renukunta aac_send_hardware_soft_reset(dev); 83577cb6d5eSRaghava Aditya Renukunta dev->msi_enabled = 0; 83677cb6d5eSRaghava Aditya Renukunta 83777cb6d5eSRaghava Aditya Renukunta is_ctrl_up = aac_is_ctrl_up_and_running(dev); 83877cb6d5eSRaghava Aditya Renukunta if (!is_ctrl_up) { 83977cb6d5eSRaghava Aditya Renukunta dev_err(&dev->pdev->dev, "SOFT reset failed\n"); 84077cb6d5eSRaghava Aditya Renukunta ret = -ENODEV; 84177cb6d5eSRaghava Aditya Renukunta goto out; 8424a76be0dSRaghava Aditya Renukunta } else 843bc8282a7SMasanari Iida dev_info(&dev->pdev->dev, "SOFT reset succeeded\n"); 84431364329SRaghava Aditya Renukunta } 845e8b12f0fSMahesh Rajashekhara 8460e9973edSRaghava Aditya Renukunta set_startup: 847e8b12f0fSMahesh Rajashekhara if (startup_timeout < 300) 848e8b12f0fSMahesh Rajashekhara startup_timeout = 300; 849e8b12f0fSMahesh Rajashekhara 85077cb6d5eSRaghava Aditya Renukunta out: 85177cb6d5eSRaghava Aditya Renukunta return ret; 8525aa60732SRaghava Aditya Renukunta 8535aa60732SRaghava Aditya Renukunta invalid_out: 8545aa60732SRaghava Aditya Renukunta if (src_readl(dev, MUnit.OMR) & KERNEL_PANIC) 8555aa60732SRaghava Aditya Renukunta ret = -ENODEV; 8565aa60732SRaghava Aditya Renukunta goto out; 857e8b12f0fSMahesh Rajashekhara } 858e8b12f0fSMahesh Rajashekhara 859e8b12f0fSMahesh Rajashekhara /** 860e8b12f0fSMahesh Rajashekhara * aac_src_select_comm - Select communications method 861e8b12f0fSMahesh Rajashekhara * @dev: Adapter 862e8b12f0fSMahesh Rajashekhara * @comm: communications method 863e8b12f0fSMahesh Rajashekhara */ 864a44199eeSBaoyou Xie static int aac_src_select_comm(struct aac_dev *dev, int comm) 865e8b12f0fSMahesh Rajashekhara { 866e8b12f0fSMahesh Rajashekhara switch (comm) { 867e8b12f0fSMahesh Rajashekhara case AAC_COMM_MESSAGE: 868e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_intr = aac_src_intr_message; 869e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_deliver = aac_src_deliver_message; 870e8b12f0fSMahesh Rajashekhara break; 871e8b12f0fSMahesh Rajashekhara default: 872e8b12f0fSMahesh Rajashekhara return 1; 873e8b12f0fSMahesh Rajashekhara } 874e8b12f0fSMahesh Rajashekhara return 0; 875e8b12f0fSMahesh Rajashekhara } 876e8b12f0fSMahesh Rajashekhara 877e8b12f0fSMahesh Rajashekhara /** 878e8b12f0fSMahesh Rajashekhara * aac_src_init - initialize an Cardinal Frey Bar card 879e8b12f0fSMahesh Rajashekhara * @dev: device to configure 880e8b12f0fSMahesh Rajashekhara * 881e8b12f0fSMahesh Rajashekhara */ 882e8b12f0fSMahesh Rajashekhara 883e8b12f0fSMahesh Rajashekhara int aac_src_init(struct aac_dev *dev) 884e8b12f0fSMahesh Rajashekhara { 885e8b12f0fSMahesh Rajashekhara unsigned long start; 886e8b12f0fSMahesh Rajashekhara unsigned long status; 887e8b12f0fSMahesh Rajashekhara int restart = 0; 888e8b12f0fSMahesh Rajashekhara int instance = dev->id; 889e8b12f0fSMahesh Rajashekhara const char *name = dev->name; 890e8b12f0fSMahesh Rajashekhara 891e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_ioremap = aac_src_ioremap; 892e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_comm = aac_src_select_comm; 893e8b12f0fSMahesh Rajashekhara 894e8b12f0fSMahesh Rajashekhara dev->base_size = AAC_MIN_SRC_BAR0_SIZE; 895e8b12f0fSMahesh Rajashekhara if (aac_adapter_ioremap(dev, dev->base_size)) { 896e8b12f0fSMahesh Rajashekhara printk(KERN_WARNING "%s: unable to map adapter.\n", name); 897e8b12f0fSMahesh Rajashekhara goto error_iounmap; 898e8b12f0fSMahesh Rajashekhara } 899e8b12f0fSMahesh Rajashekhara 900e8b12f0fSMahesh Rajashekhara /* Failure to reset here is an option ... */ 901e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_sync_cmd = src_sync_cmd; 902e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_enable_int = aac_src_disable_interrupt; 903d9b6d85aSGuilherme G. Piccoli 904d9b6d85aSGuilherme G. Piccoli if (dev->init_reset) { 905d9b6d85aSGuilherme G. Piccoli dev->init_reset = false; 906d9b6d85aSGuilherme G. Piccoli if (!aac_src_restart_adapter(dev, 0, IOP_HWSOFT_RESET)) 907e8b12f0fSMahesh Rajashekhara ++restart; 908d9b6d85aSGuilherme G. Piccoli } 909d9b6d85aSGuilherme G. Piccoli 910e8b12f0fSMahesh Rajashekhara /* 911e8b12f0fSMahesh Rajashekhara * Check to see if the board panic'd while booting. 912e8b12f0fSMahesh Rajashekhara */ 913e8b12f0fSMahesh Rajashekhara status = src_readl(dev, MUnit.OMR); 914e8b12f0fSMahesh Rajashekhara if (status & KERNEL_PANIC) { 91531364329SRaghava Aditya Renukunta if (aac_src_restart_adapter(dev, 91631364329SRaghava Aditya Renukunta aac_src_check_health(dev), IOP_HWSOFT_RESET)) 917e8b12f0fSMahesh Rajashekhara goto error_iounmap; 918e8b12f0fSMahesh Rajashekhara ++restart; 919e8b12f0fSMahesh Rajashekhara } 920e8b12f0fSMahesh Rajashekhara /* 921e8b12f0fSMahesh Rajashekhara * Check to see if the board failed any self tests. 922e8b12f0fSMahesh Rajashekhara */ 923e8b12f0fSMahesh Rajashekhara status = src_readl(dev, MUnit.OMR); 924e8b12f0fSMahesh Rajashekhara if (status & SELF_TEST_FAILED) { 925e8b12f0fSMahesh Rajashekhara printk(KERN_ERR "%s%d: adapter self-test failed.\n", 926e8b12f0fSMahesh Rajashekhara dev->name, instance); 927e8b12f0fSMahesh Rajashekhara goto error_iounmap; 928e8b12f0fSMahesh Rajashekhara } 929e8b12f0fSMahesh Rajashekhara /* 930e8b12f0fSMahesh Rajashekhara * Check to see if the monitor panic'd while booting. 931e8b12f0fSMahesh Rajashekhara */ 932e8b12f0fSMahesh Rajashekhara if (status & MONITOR_PANIC) { 933e8b12f0fSMahesh Rajashekhara printk(KERN_ERR "%s%d: adapter monitor panic.\n", 934e8b12f0fSMahesh Rajashekhara dev->name, instance); 935e8b12f0fSMahesh Rajashekhara goto error_iounmap; 936e8b12f0fSMahesh Rajashekhara } 937e8b12f0fSMahesh Rajashekhara start = jiffies; 938e8b12f0fSMahesh Rajashekhara /* 939e8b12f0fSMahesh Rajashekhara * Wait for the adapter to be up and running. Wait up to 3 minutes 940e8b12f0fSMahesh Rajashekhara */ 941e8b12f0fSMahesh Rajashekhara while (!((status = src_readl(dev, MUnit.OMR)) & 942e8b12f0fSMahesh Rajashekhara KERNEL_UP_AND_RUNNING)) { 943e8b12f0fSMahesh Rajashekhara if ((restart && 944e8b12f0fSMahesh Rajashekhara (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) || 945e8b12f0fSMahesh Rajashekhara time_after(jiffies, start+HZ*startup_timeout)) { 946e8b12f0fSMahesh Rajashekhara printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n", 947e8b12f0fSMahesh Rajashekhara dev->name, instance, status); 948e8b12f0fSMahesh Rajashekhara goto error_iounmap; 949e8b12f0fSMahesh Rajashekhara } 950e8b12f0fSMahesh Rajashekhara if (!restart && 951e8b12f0fSMahesh Rajashekhara ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) || 952e8b12f0fSMahesh Rajashekhara time_after(jiffies, start + HZ * 953e8b12f0fSMahesh Rajashekhara ((startup_timeout > 60) 954e8b12f0fSMahesh Rajashekhara ? (startup_timeout - 60) 955e8b12f0fSMahesh Rajashekhara : (startup_timeout / 2))))) { 956e8b12f0fSMahesh Rajashekhara if (likely(!aac_src_restart_adapter(dev, 95731364329SRaghava Aditya Renukunta aac_src_check_health(dev), IOP_HWSOFT_RESET))) 958e8b12f0fSMahesh Rajashekhara start = jiffies; 959e8b12f0fSMahesh Rajashekhara ++restart; 960e8b12f0fSMahesh Rajashekhara } 961e8b12f0fSMahesh Rajashekhara msleep(1); 962e8b12f0fSMahesh Rajashekhara } 963e8b12f0fSMahesh Rajashekhara if (restart && aac_commit) 964e8b12f0fSMahesh Rajashekhara aac_commit = 1; 965e8b12f0fSMahesh Rajashekhara /* 966e8b12f0fSMahesh Rajashekhara * Fill in the common function dispatch table. 967e8b12f0fSMahesh Rajashekhara */ 968e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter; 969e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_disable_int = aac_src_disable_interrupt; 970dafde947SMahesh Rajashekhara dev->a_ops.adapter_enable_int = aac_src_disable_interrupt; 971e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_notify = aac_src_notify_adapter; 972e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_sync_cmd = src_sync_cmd; 973e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_check_health = aac_src_check_health; 974e8b12f0fSMahesh Rajashekhara dev->a_ops.adapter_restart = aac_src_restart_adapter; 975de665f28SMahesh Rajashekhara dev->a_ops.adapter_start = aac_src_start_adapter; 976e8b12f0fSMahesh Rajashekhara 977e8b12f0fSMahesh Rajashekhara /* 978e8b12f0fSMahesh Rajashekhara * First clear out all interrupts. Then enable the one's that we 979e8b12f0fSMahesh Rajashekhara * can handle. 980e8b12f0fSMahesh Rajashekhara */ 981e8b12f0fSMahesh Rajashekhara aac_adapter_comm(dev, AAC_COMM_MESSAGE); 982e8b12f0fSMahesh Rajashekhara aac_adapter_disable_int(dev); 983e8b12f0fSMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 0xffffffff); 984e8b12f0fSMahesh Rajashekhara aac_adapter_enable_int(dev); 985e8b12f0fSMahesh Rajashekhara 986e8b12f0fSMahesh Rajashekhara if (aac_init_adapter(dev) == NULL) 987e8b12f0fSMahesh Rajashekhara goto error_iounmap; 988e8b12f0fSMahesh Rajashekhara if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE1) 989e8b12f0fSMahesh Rajashekhara goto error_iounmap; 990e8b12f0fSMahesh Rajashekhara 9919022d375SMahesh Rajashekhara dev->msi = !pci_enable_msi(dev->pdev); 992e8b12f0fSMahesh Rajashekhara 993495c0217SMahesh Rajashekhara dev->aac_msix[0].vector_no = 0; 994495c0217SMahesh Rajashekhara dev->aac_msix[0].dev = dev; 995495c0217SMahesh Rajashekhara 996e8b12f0fSMahesh Rajashekhara if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr, 997495c0217SMahesh Rajashekhara IRQF_SHARED, "aacraid", &(dev->aac_msix[0])) < 0) { 998e8b12f0fSMahesh Rajashekhara 999e8b12f0fSMahesh Rajashekhara if (dev->msi) 1000e8b12f0fSMahesh Rajashekhara pci_disable_msi(dev->pdev); 1001e8b12f0fSMahesh Rajashekhara 1002e8b12f0fSMahesh Rajashekhara printk(KERN_ERR "%s%d: Interrupt unavailable.\n", 1003e8b12f0fSMahesh Rajashekhara name, instance); 1004e8b12f0fSMahesh Rajashekhara goto error_iounmap; 1005e8b12f0fSMahesh Rajashekhara } 1006e8b12f0fSMahesh Rajashekhara dev->dbg_base = pci_resource_start(dev->pdev, 2); 1007e8b12f0fSMahesh Rajashekhara dev->dbg_base_mapped = dev->regs.src.bar1; 1008e8b12f0fSMahesh Rajashekhara dev->dbg_size = AAC_MIN_SRC_BAR1_SIZE; 1009dafde947SMahesh Rajashekhara dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message; 1010e8b12f0fSMahesh Rajashekhara 1011e8b12f0fSMahesh Rajashekhara aac_adapter_enable_int(dev); 101211604612SMahesh Rajashekhara 101311604612SMahesh Rajashekhara if (!dev->sync_mode) { 1014e8b12f0fSMahesh Rajashekhara /* 1015e8b12f0fSMahesh Rajashekhara * Tell the adapter that all is configured, and it can 1016e8b12f0fSMahesh Rajashekhara * start accepting requests 1017e8b12f0fSMahesh Rajashekhara */ 1018e8b12f0fSMahesh Rajashekhara aac_src_start_adapter(dev); 101911604612SMahesh Rajashekhara } 1020e8b12f0fSMahesh Rajashekhara return 0; 1021e8b12f0fSMahesh Rajashekhara 1022e8b12f0fSMahesh Rajashekhara error_iounmap: 1023e8b12f0fSMahesh Rajashekhara 1024e8b12f0fSMahesh Rajashekhara return -1; 1025e8b12f0fSMahesh Rajashekhara } 102611604612SMahesh Rajashekhara 102744f1ce7dSRaghava Aditya Renukunta static int aac_src_wait_sync(struct aac_dev *dev, int *status) 102844f1ce7dSRaghava Aditya Renukunta { 102944f1ce7dSRaghava Aditya Renukunta unsigned long start = jiffies; 103044f1ce7dSRaghava Aditya Renukunta unsigned long usecs = 0; 103144f1ce7dSRaghava Aditya Renukunta int delay = 5 * HZ; 103244f1ce7dSRaghava Aditya Renukunta int rc = 1; 103344f1ce7dSRaghava Aditya Renukunta 103444f1ce7dSRaghava Aditya Renukunta while (time_before(jiffies, start+delay)) { 103544f1ce7dSRaghava Aditya Renukunta /* 103644f1ce7dSRaghava Aditya Renukunta * Delay 5 microseconds to let Mon960 get info. 103744f1ce7dSRaghava Aditya Renukunta */ 103844f1ce7dSRaghava Aditya Renukunta udelay(5); 103944f1ce7dSRaghava Aditya Renukunta 104044f1ce7dSRaghava Aditya Renukunta /* 104144f1ce7dSRaghava Aditya Renukunta * Mon960 will set doorbell0 bit when it has completed the 104244f1ce7dSRaghava Aditya Renukunta * command. 104344f1ce7dSRaghava Aditya Renukunta */ 104444f1ce7dSRaghava Aditya Renukunta if (aac_src_get_sync_status(dev) & OUTBOUNDDOORBELL_0) { 104544f1ce7dSRaghava Aditya Renukunta /* 104644f1ce7dSRaghava Aditya Renukunta * Clear: the doorbell. 104744f1ce7dSRaghava Aditya Renukunta */ 104844f1ce7dSRaghava Aditya Renukunta if (dev->msi_enabled) 104944f1ce7dSRaghava Aditya Renukunta aac_src_access_devreg(dev, AAC_CLEAR_SYNC_BIT); 105044f1ce7dSRaghava Aditya Renukunta else 105144f1ce7dSRaghava Aditya Renukunta src_writel(dev, MUnit.ODR_C, 105244f1ce7dSRaghava Aditya Renukunta OUTBOUNDDOORBELL_0 << SRC_ODR_SHIFT); 105344f1ce7dSRaghava Aditya Renukunta rc = 0; 105444f1ce7dSRaghava Aditya Renukunta 105544f1ce7dSRaghava Aditya Renukunta break; 105644f1ce7dSRaghava Aditya Renukunta } 105744f1ce7dSRaghava Aditya Renukunta 105844f1ce7dSRaghava Aditya Renukunta /* 105944f1ce7dSRaghava Aditya Renukunta * Yield the processor in case we are slow 106044f1ce7dSRaghava Aditya Renukunta */ 106144f1ce7dSRaghava Aditya Renukunta usecs = 1 * USEC_PER_MSEC; 106244f1ce7dSRaghava Aditya Renukunta usleep_range(usecs, usecs + 50); 106344f1ce7dSRaghava Aditya Renukunta } 106444f1ce7dSRaghava Aditya Renukunta /* 106544f1ce7dSRaghava Aditya Renukunta * Pull the synch status from Mailbox 0. 106644f1ce7dSRaghava Aditya Renukunta */ 106744f1ce7dSRaghava Aditya Renukunta if (status && !rc) { 106844f1ce7dSRaghava Aditya Renukunta status[0] = readl(&dev->IndexRegs->Mailbox[0]); 106944f1ce7dSRaghava Aditya Renukunta status[1] = readl(&dev->IndexRegs->Mailbox[1]); 107044f1ce7dSRaghava Aditya Renukunta status[2] = readl(&dev->IndexRegs->Mailbox[2]); 107144f1ce7dSRaghava Aditya Renukunta status[3] = readl(&dev->IndexRegs->Mailbox[3]); 107244f1ce7dSRaghava Aditya Renukunta status[4] = readl(&dev->IndexRegs->Mailbox[4]); 107344f1ce7dSRaghava Aditya Renukunta } 107444f1ce7dSRaghava Aditya Renukunta 107544f1ce7dSRaghava Aditya Renukunta return rc; 107644f1ce7dSRaghava Aditya Renukunta } 107744f1ce7dSRaghava Aditya Renukunta 107844f1ce7dSRaghava Aditya Renukunta /** 107944f1ce7dSRaghava Aditya Renukunta * aac_src_soft_reset - perform soft reset to speed up 108044f1ce7dSRaghava Aditya Renukunta * access 108144f1ce7dSRaghava Aditya Renukunta * 108244f1ce7dSRaghava Aditya Renukunta * Assumptions: That the controller is in a state where we can 108344f1ce7dSRaghava Aditya Renukunta * bring it back to life with an init struct. We can only use 108444f1ce7dSRaghava Aditya Renukunta * fast sync commands, as the timeout is 5 seconds. 108544f1ce7dSRaghava Aditya Renukunta * 108644f1ce7dSRaghava Aditya Renukunta * @dev: device to configure 108744f1ce7dSRaghava Aditya Renukunta * 108844f1ce7dSRaghava Aditya Renukunta */ 108944f1ce7dSRaghava Aditya Renukunta 109044f1ce7dSRaghava Aditya Renukunta static int aac_src_soft_reset(struct aac_dev *dev) 109144f1ce7dSRaghava Aditya Renukunta { 109244f1ce7dSRaghava Aditya Renukunta u32 status_omr = src_readl(dev, MUnit.OMR); 109344f1ce7dSRaghava Aditya Renukunta u32 status[5]; 109444f1ce7dSRaghava Aditya Renukunta int rc = 1; 109544f1ce7dSRaghava Aditya Renukunta int state = 0; 109644f1ce7dSRaghava Aditya Renukunta char *state_str[7] = { 109744f1ce7dSRaghava Aditya Renukunta "GET_ADAPTER_PROPERTIES Failed", 109844f1ce7dSRaghava Aditya Renukunta "GET_ADAPTER_PROPERTIES timeout", 109944f1ce7dSRaghava Aditya Renukunta "SOFT_RESET not supported", 110044f1ce7dSRaghava Aditya Renukunta "DROP_IO Failed", 110144f1ce7dSRaghava Aditya Renukunta "DROP_IO timeout", 110244f1ce7dSRaghava Aditya Renukunta "Check Health failed" 110344f1ce7dSRaghava Aditya Renukunta }; 110444f1ce7dSRaghava Aditya Renukunta 110544f1ce7dSRaghava Aditya Renukunta if (status_omr == INVALID_OMR) 110644f1ce7dSRaghava Aditya Renukunta return 1; // pcie hosed 110744f1ce7dSRaghava Aditya Renukunta 110844f1ce7dSRaghava Aditya Renukunta if (!(status_omr & KERNEL_UP_AND_RUNNING)) 110944f1ce7dSRaghava Aditya Renukunta return 1; // not up and running 111044f1ce7dSRaghava Aditya Renukunta 111144f1ce7dSRaghava Aditya Renukunta /* 111244f1ce7dSRaghava Aditya Renukunta * We go into soft reset mode to allow us to handle response 111344f1ce7dSRaghava Aditya Renukunta */ 111444f1ce7dSRaghava Aditya Renukunta dev->in_soft_reset = 1; 111544f1ce7dSRaghava Aditya Renukunta dev->msi_enabled = status_omr & AAC_INT_MODE_MSIX; 111644f1ce7dSRaghava Aditya Renukunta 111744f1ce7dSRaghava Aditya Renukunta /* Get adapter properties */ 111844f1ce7dSRaghava Aditya Renukunta rc = aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 0, 0, 0, 111944f1ce7dSRaghava Aditya Renukunta 0, 0, 0, status+0, status+1, status+2, status+3, status+4); 112044f1ce7dSRaghava Aditya Renukunta if (rc) 112144f1ce7dSRaghava Aditya Renukunta goto out; 112244f1ce7dSRaghava Aditya Renukunta 112344f1ce7dSRaghava Aditya Renukunta state++; 112444f1ce7dSRaghava Aditya Renukunta if (aac_src_wait_sync(dev, status)) { 112544f1ce7dSRaghava Aditya Renukunta rc = 1; 112644f1ce7dSRaghava Aditya Renukunta goto out; 112744f1ce7dSRaghava Aditya Renukunta } 112844f1ce7dSRaghava Aditya Renukunta 112944f1ce7dSRaghava Aditya Renukunta state++; 113044f1ce7dSRaghava Aditya Renukunta if (!(status[1] & le32_to_cpu(AAC_OPT_EXTENDED) && 113144f1ce7dSRaghava Aditya Renukunta (status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET)))) { 113244f1ce7dSRaghava Aditya Renukunta rc = 2; 113344f1ce7dSRaghava Aditya Renukunta goto out; 113444f1ce7dSRaghava Aditya Renukunta } 113544f1ce7dSRaghava Aditya Renukunta 113644f1ce7dSRaghava Aditya Renukunta if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) && 113744f1ce7dSRaghava Aditya Renukunta (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE))) 113844f1ce7dSRaghava Aditya Renukunta dev->sa_firmware = 1; 113944f1ce7dSRaghava Aditya Renukunta 114044f1ce7dSRaghava Aditya Renukunta state++; 114144f1ce7dSRaghava Aditya Renukunta rc = aac_adapter_sync_cmd(dev, DROP_IO, 0, 0, 0, 0, 0, 0, 114244f1ce7dSRaghava Aditya Renukunta status+0, status+1, status+2, status+3, status+4); 114344f1ce7dSRaghava Aditya Renukunta 114444f1ce7dSRaghava Aditya Renukunta if (rc) 114544f1ce7dSRaghava Aditya Renukunta goto out; 114644f1ce7dSRaghava Aditya Renukunta 114744f1ce7dSRaghava Aditya Renukunta state++; 114844f1ce7dSRaghava Aditya Renukunta if (aac_src_wait_sync(dev, status)) { 114944f1ce7dSRaghava Aditya Renukunta rc = 3; 115044f1ce7dSRaghava Aditya Renukunta goto out; 115144f1ce7dSRaghava Aditya Renukunta } 115244f1ce7dSRaghava Aditya Renukunta 115344f1ce7dSRaghava Aditya Renukunta if (status[1]) 115444f1ce7dSRaghava Aditya Renukunta dev_err(&dev->pdev->dev, "%s: %d outstanding I/O pending\n", 115544f1ce7dSRaghava Aditya Renukunta __func__, status[1]); 115644f1ce7dSRaghava Aditya Renukunta 115744f1ce7dSRaghava Aditya Renukunta state++; 115844f1ce7dSRaghava Aditya Renukunta rc = aac_src_check_health(dev); 115944f1ce7dSRaghava Aditya Renukunta 116044f1ce7dSRaghava Aditya Renukunta out: 116144f1ce7dSRaghava Aditya Renukunta dev->in_soft_reset = 0; 116244f1ce7dSRaghava Aditya Renukunta dev->msi_enabled = 0; 116344f1ce7dSRaghava Aditya Renukunta if (rc) 116444f1ce7dSRaghava Aditya Renukunta dev_err(&dev->pdev->dev, "%s: %s status = %d", __func__, 116544f1ce7dSRaghava Aditya Renukunta state_str[state], rc); 116644f1ce7dSRaghava Aditya Renukunta 116744f1ce7dSRaghava Aditya Renukunta return rc; 116844f1ce7dSRaghava Aditya Renukunta } 116911604612SMahesh Rajashekhara /** 117011604612SMahesh Rajashekhara * aac_srcv_init - initialize an SRCv card 117111604612SMahesh Rajashekhara * @dev: device to configure 117211604612SMahesh Rajashekhara * 117311604612SMahesh Rajashekhara */ 117411604612SMahesh Rajashekhara 117511604612SMahesh Rajashekhara int aac_srcv_init(struct aac_dev *dev) 117611604612SMahesh Rajashekhara { 117711604612SMahesh Rajashekhara unsigned long start; 117811604612SMahesh Rajashekhara unsigned long status; 117911604612SMahesh Rajashekhara int restart = 0; 118011604612SMahesh Rajashekhara int instance = dev->id; 118111604612SMahesh Rajashekhara const char *name = dev->name; 118211604612SMahesh Rajashekhara 118311604612SMahesh Rajashekhara dev->a_ops.adapter_ioremap = aac_srcv_ioremap; 118411604612SMahesh Rajashekhara dev->a_ops.adapter_comm = aac_src_select_comm; 118511604612SMahesh Rajashekhara 118611604612SMahesh Rajashekhara dev->base_size = AAC_MIN_SRCV_BAR0_SIZE; 118711604612SMahesh Rajashekhara if (aac_adapter_ioremap(dev, dev->base_size)) { 118811604612SMahesh Rajashekhara printk(KERN_WARNING "%s: unable to map adapter.\n", name); 118911604612SMahesh Rajashekhara goto error_iounmap; 119011604612SMahesh Rajashekhara } 119111604612SMahesh Rajashekhara 119211604612SMahesh Rajashekhara /* Failure to reset here is an option ... */ 119311604612SMahesh Rajashekhara dev->a_ops.adapter_sync_cmd = src_sync_cmd; 119411604612SMahesh Rajashekhara dev->a_ops.adapter_enable_int = aac_src_disable_interrupt; 1195d9b6d85aSGuilherme G. Piccoli 1196d9b6d85aSGuilherme G. Piccoli if (dev->init_reset) { 1197d9b6d85aSGuilherme G. Piccoli dev->init_reset = false; 119844f1ce7dSRaghava Aditya Renukunta if (aac_src_soft_reset(dev)) { 119944f1ce7dSRaghava Aditya Renukunta aac_src_restart_adapter(dev, 0, IOP_HWSOFT_RESET); 120011604612SMahesh Rajashekhara ++restart; 1201d9b6d85aSGuilherme G. Piccoli } 120244f1ce7dSRaghava Aditya Renukunta } 1203d9b6d85aSGuilherme G. Piccoli 120411604612SMahesh Rajashekhara /* 12052c10cd43SMahesh Rajashekhara * Check to see if flash update is running. 12062c10cd43SMahesh Rajashekhara * Wait for the adapter to be up and running. Wait up to 5 minutes 12072c10cd43SMahesh Rajashekhara */ 12082c10cd43SMahesh Rajashekhara status = src_readl(dev, MUnit.OMR); 12092c10cd43SMahesh Rajashekhara if (status & FLASH_UPD_PENDING) { 12102c10cd43SMahesh Rajashekhara start = jiffies; 12112c10cd43SMahesh Rajashekhara do { 12122c10cd43SMahesh Rajashekhara status = src_readl(dev, MUnit.OMR); 12132c10cd43SMahesh Rajashekhara if (time_after(jiffies, start+HZ*FWUPD_TIMEOUT)) { 12142c10cd43SMahesh Rajashekhara printk(KERN_ERR "%s%d: adapter flash update failed.\n", 12152c10cd43SMahesh Rajashekhara dev->name, instance); 12162c10cd43SMahesh Rajashekhara goto error_iounmap; 12172c10cd43SMahesh Rajashekhara } 12182c10cd43SMahesh Rajashekhara } while (!(status & FLASH_UPD_SUCCESS) && 12192c10cd43SMahesh Rajashekhara !(status & FLASH_UPD_FAILED)); 12202c10cd43SMahesh Rajashekhara /* Delay 10 seconds. 12212c10cd43SMahesh Rajashekhara * Because right now FW is doing a soft reset, 12222c10cd43SMahesh Rajashekhara * do not read scratch pad register at this time 12232c10cd43SMahesh Rajashekhara */ 12242c10cd43SMahesh Rajashekhara ssleep(10); 12252c10cd43SMahesh Rajashekhara } 12262c10cd43SMahesh Rajashekhara /* 122711604612SMahesh Rajashekhara * Check to see if the board panic'd while booting. 122811604612SMahesh Rajashekhara */ 122911604612SMahesh Rajashekhara status = src_readl(dev, MUnit.OMR); 123011604612SMahesh Rajashekhara if (status & KERNEL_PANIC) { 123131364329SRaghava Aditya Renukunta if (aac_src_restart_adapter(dev, 123231364329SRaghava Aditya Renukunta aac_src_check_health(dev), IOP_HWSOFT_RESET)) 123311604612SMahesh Rajashekhara goto error_iounmap; 123411604612SMahesh Rajashekhara ++restart; 123511604612SMahesh Rajashekhara } 123611604612SMahesh Rajashekhara /* 123711604612SMahesh Rajashekhara * Check to see if the board failed any self tests. 123811604612SMahesh Rajashekhara */ 123911604612SMahesh Rajashekhara status = src_readl(dev, MUnit.OMR); 124011604612SMahesh Rajashekhara if (status & SELF_TEST_FAILED) { 124111604612SMahesh Rajashekhara printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance); 124211604612SMahesh Rajashekhara goto error_iounmap; 124311604612SMahesh Rajashekhara } 124411604612SMahesh Rajashekhara /* 124511604612SMahesh Rajashekhara * Check to see if the monitor panic'd while booting. 124611604612SMahesh Rajashekhara */ 124711604612SMahesh Rajashekhara if (status & MONITOR_PANIC) { 124811604612SMahesh Rajashekhara printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance); 124911604612SMahesh Rajashekhara goto error_iounmap; 125011604612SMahesh Rajashekhara } 125144f1ce7dSRaghava Aditya Renukunta 125211604612SMahesh Rajashekhara start = jiffies; 125311604612SMahesh Rajashekhara /* 125411604612SMahesh Rajashekhara * Wait for the adapter to be up and running. Wait up to 3 minutes 125511604612SMahesh Rajashekhara */ 125644f1ce7dSRaghava Aditya Renukunta do { 125744f1ce7dSRaghava Aditya Renukunta status = src_readl(dev, MUnit.OMR); 125844f1ce7dSRaghava Aditya Renukunta if (status == INVALID_OMR) 125944f1ce7dSRaghava Aditya Renukunta status = 0; 126044f1ce7dSRaghava Aditya Renukunta 126111604612SMahesh Rajashekhara if ((restart && 126211604612SMahesh Rajashekhara (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) || 126311604612SMahesh Rajashekhara time_after(jiffies, start+HZ*startup_timeout)) { 126411604612SMahesh Rajashekhara printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n", 126511604612SMahesh Rajashekhara dev->name, instance, status); 126611604612SMahesh Rajashekhara goto error_iounmap; 126711604612SMahesh Rajashekhara } 126811604612SMahesh Rajashekhara if (!restart && 126911604612SMahesh Rajashekhara ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) || 127011604612SMahesh Rajashekhara time_after(jiffies, start + HZ * 127111604612SMahesh Rajashekhara ((startup_timeout > 60) 127211604612SMahesh Rajashekhara ? (startup_timeout - 60) 127311604612SMahesh Rajashekhara : (startup_timeout / 2))))) { 127431364329SRaghava Aditya Renukunta if (likely(!aac_src_restart_adapter(dev, 127531364329SRaghava Aditya Renukunta aac_src_check_health(dev), IOP_HWSOFT_RESET))) 127611604612SMahesh Rajashekhara start = jiffies; 127711604612SMahesh Rajashekhara ++restart; 127811604612SMahesh Rajashekhara } 127911604612SMahesh Rajashekhara msleep(1); 128044f1ce7dSRaghava Aditya Renukunta } while (!(status & KERNEL_UP_AND_RUNNING)); 128144f1ce7dSRaghava Aditya Renukunta 128211604612SMahesh Rajashekhara if (restart && aac_commit) 128311604612SMahesh Rajashekhara aac_commit = 1; 128411604612SMahesh Rajashekhara /* 128511604612SMahesh Rajashekhara * Fill in the common function dispatch table. 128611604612SMahesh Rajashekhara */ 128711604612SMahesh Rajashekhara dev->a_ops.adapter_interrupt = aac_src_interrupt_adapter; 128811604612SMahesh Rajashekhara dev->a_ops.adapter_disable_int = aac_src_disable_interrupt; 1289dafde947SMahesh Rajashekhara dev->a_ops.adapter_enable_int = aac_src_disable_interrupt; 129011604612SMahesh Rajashekhara dev->a_ops.adapter_notify = aac_src_notify_adapter; 129111604612SMahesh Rajashekhara dev->a_ops.adapter_sync_cmd = src_sync_cmd; 129211604612SMahesh Rajashekhara dev->a_ops.adapter_check_health = aac_src_check_health; 129311604612SMahesh Rajashekhara dev->a_ops.adapter_restart = aac_src_restart_adapter; 1294de665f28SMahesh Rajashekhara dev->a_ops.adapter_start = aac_src_start_adapter; 129511604612SMahesh Rajashekhara 129611604612SMahesh Rajashekhara /* 129711604612SMahesh Rajashekhara * First clear out all interrupts. Then enable the one's that we 129811604612SMahesh Rajashekhara * can handle. 129911604612SMahesh Rajashekhara */ 130011604612SMahesh Rajashekhara aac_adapter_comm(dev, AAC_COMM_MESSAGE); 130111604612SMahesh Rajashekhara aac_adapter_disable_int(dev); 130211604612SMahesh Rajashekhara src_writel(dev, MUnit.ODR_C, 0xffffffff); 130311604612SMahesh Rajashekhara aac_adapter_enable_int(dev); 130411604612SMahesh Rajashekhara 130511604612SMahesh Rajashekhara if (aac_init_adapter(dev) == NULL) 130611604612SMahesh Rajashekhara goto error_iounmap; 1307d1ef4da8SRaghava Aditya Renukunta if ((dev->comm_interface != AAC_COMM_MESSAGE_TYPE2) && 1308d1ef4da8SRaghava Aditya Renukunta (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)) 130911604612SMahesh Rajashekhara goto error_iounmap; 1310495c0217SMahesh Rajashekhara if (dev->msi_enabled) 1311495c0217SMahesh Rajashekhara aac_src_access_devreg(dev, AAC_ENABLE_MSIX); 1312495c0217SMahesh Rajashekhara 13138b1462e0SMahesh Rajashekhara if (aac_acquire_irq(dev)) 1314495c0217SMahesh Rajashekhara goto error_iounmap; 1315495c0217SMahesh Rajashekhara 13163ffd6c5aSRaghava Aditya Renukunta dev->dbg_base = pci_resource_start(dev->pdev, 2); 13173ffd6c5aSRaghava Aditya Renukunta dev->dbg_base_mapped = dev->regs.src.bar1; 13183ffd6c5aSRaghava Aditya Renukunta dev->dbg_size = AAC_MIN_SRCV_BAR1_SIZE; 1319dafde947SMahesh Rajashekhara dev->a_ops.adapter_enable_int = aac_src_enable_interrupt_message; 132011604612SMahesh Rajashekhara 132111604612SMahesh Rajashekhara aac_adapter_enable_int(dev); 132211604612SMahesh Rajashekhara 132311604612SMahesh Rajashekhara if (!dev->sync_mode) { 132411604612SMahesh Rajashekhara /* 132511604612SMahesh Rajashekhara * Tell the adapter that all is configured, and it can 132611604612SMahesh Rajashekhara * start accepting requests 132711604612SMahesh Rajashekhara */ 132811604612SMahesh Rajashekhara aac_src_start_adapter(dev); 132911604612SMahesh Rajashekhara } 133011604612SMahesh Rajashekhara return 0; 133111604612SMahesh Rajashekhara 133211604612SMahesh Rajashekhara error_iounmap: 133311604612SMahesh Rajashekhara 133411604612SMahesh Rajashekhara return -1; 133511604612SMahesh Rajashekhara } 133611604612SMahesh Rajashekhara 1337495c0217SMahesh Rajashekhara void aac_src_access_devreg(struct aac_dev *dev, int mode) 1338495c0217SMahesh Rajashekhara { 1339495c0217SMahesh Rajashekhara u_int32_t val; 1340495c0217SMahesh Rajashekhara 1341495c0217SMahesh Rajashekhara switch (mode) { 1342495c0217SMahesh Rajashekhara case AAC_ENABLE_INTERRUPT: 1343495c0217SMahesh Rajashekhara src_writel(dev, 1344495c0217SMahesh Rajashekhara MUnit.OIMR, 1345495c0217SMahesh Rajashekhara dev->OIMR = (dev->msi_enabled ? 1346495c0217SMahesh Rajashekhara AAC_INT_ENABLE_TYPE1_MSIX : 1347495c0217SMahesh Rajashekhara AAC_INT_ENABLE_TYPE1_INTX)); 1348495c0217SMahesh Rajashekhara break; 1349495c0217SMahesh Rajashekhara 1350495c0217SMahesh Rajashekhara case AAC_DISABLE_INTERRUPT: 1351495c0217SMahesh Rajashekhara src_writel(dev, 1352495c0217SMahesh Rajashekhara MUnit.OIMR, 1353495c0217SMahesh Rajashekhara dev->OIMR = AAC_INT_DISABLE_ALL); 1354495c0217SMahesh Rajashekhara break; 1355495c0217SMahesh Rajashekhara 1356495c0217SMahesh Rajashekhara case AAC_ENABLE_MSIX: 1357495c0217SMahesh Rajashekhara /* set bit 6 */ 1358495c0217SMahesh Rajashekhara val = src_readl(dev, MUnit.IDR); 1359495c0217SMahesh Rajashekhara val |= 0x40; 1360495c0217SMahesh Rajashekhara src_writel(dev, MUnit.IDR, val); 1361495c0217SMahesh Rajashekhara src_readl(dev, MUnit.IDR); 1362495c0217SMahesh Rajashekhara /* unmask int. */ 1363495c0217SMahesh Rajashekhara val = PMC_ALL_INTERRUPT_BITS; 1364495c0217SMahesh Rajashekhara src_writel(dev, MUnit.IOAR, val); 1365495c0217SMahesh Rajashekhara val = src_readl(dev, MUnit.OIMR); 1366495c0217SMahesh Rajashekhara src_writel(dev, 1367495c0217SMahesh Rajashekhara MUnit.OIMR, 1368495c0217SMahesh Rajashekhara val & (~(PMC_GLOBAL_INT_BIT2 | PMC_GLOBAL_INT_BIT0))); 1369495c0217SMahesh Rajashekhara break; 1370495c0217SMahesh Rajashekhara 1371495c0217SMahesh Rajashekhara case AAC_DISABLE_MSIX: 1372495c0217SMahesh Rajashekhara /* reset bit 6 */ 1373495c0217SMahesh Rajashekhara val = src_readl(dev, MUnit.IDR); 1374495c0217SMahesh Rajashekhara val &= ~0x40; 1375495c0217SMahesh Rajashekhara src_writel(dev, MUnit.IDR, val); 1376495c0217SMahesh Rajashekhara src_readl(dev, MUnit.IDR); 1377495c0217SMahesh Rajashekhara break; 1378495c0217SMahesh Rajashekhara 1379495c0217SMahesh Rajashekhara case AAC_CLEAR_AIF_BIT: 1380495c0217SMahesh Rajashekhara /* set bit 5 */ 1381495c0217SMahesh Rajashekhara val = src_readl(dev, MUnit.IDR); 1382495c0217SMahesh Rajashekhara val |= 0x20; 1383495c0217SMahesh Rajashekhara src_writel(dev, MUnit.IDR, val); 1384495c0217SMahesh Rajashekhara src_readl(dev, MUnit.IDR); 1385495c0217SMahesh Rajashekhara break; 1386495c0217SMahesh Rajashekhara 1387495c0217SMahesh Rajashekhara case AAC_CLEAR_SYNC_BIT: 1388495c0217SMahesh Rajashekhara /* set bit 4 */ 1389495c0217SMahesh Rajashekhara val = src_readl(dev, MUnit.IDR); 1390495c0217SMahesh Rajashekhara val |= 0x10; 1391495c0217SMahesh Rajashekhara src_writel(dev, MUnit.IDR, val); 1392495c0217SMahesh Rajashekhara src_readl(dev, MUnit.IDR); 1393495c0217SMahesh Rajashekhara break; 1394495c0217SMahesh Rajashekhara 1395495c0217SMahesh Rajashekhara case AAC_ENABLE_INTX: 1396495c0217SMahesh Rajashekhara /* set bit 7 */ 1397495c0217SMahesh Rajashekhara val = src_readl(dev, MUnit.IDR); 1398495c0217SMahesh Rajashekhara val |= 0x80; 1399495c0217SMahesh Rajashekhara src_writel(dev, MUnit.IDR, val); 1400495c0217SMahesh Rajashekhara src_readl(dev, MUnit.IDR); 1401495c0217SMahesh Rajashekhara /* unmask int. */ 1402495c0217SMahesh Rajashekhara val = PMC_ALL_INTERRUPT_BITS; 1403495c0217SMahesh Rajashekhara src_writel(dev, MUnit.IOAR, val); 1404495c0217SMahesh Rajashekhara src_readl(dev, MUnit.IOAR); 1405495c0217SMahesh Rajashekhara val = src_readl(dev, MUnit.OIMR); 1406495c0217SMahesh Rajashekhara src_writel(dev, MUnit.OIMR, 1407495c0217SMahesh Rajashekhara val & (~(PMC_GLOBAL_INT_BIT2))); 1408495c0217SMahesh Rajashekhara break; 1409495c0217SMahesh Rajashekhara 1410495c0217SMahesh Rajashekhara default: 1411495c0217SMahesh Rajashekhara break; 1412495c0217SMahesh Rajashekhara } 1413495c0217SMahesh Rajashekhara } 1414495c0217SMahesh Rajashekhara 1415495c0217SMahesh Rajashekhara static int aac_src_get_sync_status(struct aac_dev *dev) 1416495c0217SMahesh Rajashekhara { 1417eee549e1SRaghava Aditya Renukunta int msix_val = 0; 1418eee549e1SRaghava Aditya Renukunta int legacy_val = 0; 1419495c0217SMahesh Rajashekhara 1420eee549e1SRaghava Aditya Renukunta msix_val = src_readl(dev, MUnit.ODR_MSI) & SRC_MSI_READ_MASK ? 1 : 0; 1421495c0217SMahesh Rajashekhara 1422eee549e1SRaghava Aditya Renukunta if (!dev->msi_enabled) { 1423eee549e1SRaghava Aditya Renukunta /* 1424eee549e1SRaghava Aditya Renukunta * if Legacy int status indicates cmd is not complete 1425eee549e1SRaghava Aditya Renukunta * sample MSIx register to see if it indiactes cmd complete, 1426eee549e1SRaghava Aditya Renukunta * if yes set the controller in MSIx mode and consider cmd 1427eee549e1SRaghava Aditya Renukunta * completed 1428eee549e1SRaghava Aditya Renukunta */ 1429eee549e1SRaghava Aditya Renukunta legacy_val = src_readl(dev, MUnit.ODR_R) >> SRC_ODR_SHIFT; 1430eee549e1SRaghava Aditya Renukunta if (!(legacy_val & 1) && msix_val) 1431eee549e1SRaghava Aditya Renukunta dev->msi_enabled = 1; 1432eee549e1SRaghava Aditya Renukunta return legacy_val; 1433eee549e1SRaghava Aditya Renukunta } 1434495c0217SMahesh Rajashekhara 1435eee549e1SRaghava Aditya Renukunta return msix_val; 1436495c0217SMahesh Rajashekhara } 1437