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-rw-r--r--hw/shpc.c682
1 files changed, 0 insertions, 682 deletions
diff --git a/hw/shpc.c b/hw/shpc.c
deleted file mode 100644
index 6b9884d544..0000000000
--- a/hw/shpc.c
+++ /dev/null
@@ -1,682 +0,0 @@
-#include <strings.h>
-#include <stdint.h>
-#include "range.h"
-#include "range.h"
-#include "shpc.h"
-#include "pci.h"
-#include "pci_internals.h"
-#include "msi.h"
-
-/* TODO: model power only and disabled slot states. */
-/* TODO: handle SERR and wakeups */
-/* TODO: consider enabling 66MHz support */
-
-/* TODO: remove fully only on state DISABLED and LED off.
- * track state to properly record this. */
-
-/* SHPC Working Register Set */
-#define SHPC_BASE_OFFSET 0x00 /* 4 bytes */
-#define SHPC_SLOTS_33 0x04 /* 4 bytes. Also encodes PCI-X slots. */
-#define SHPC_SLOTS_66 0x08 /* 4 bytes. */
-#define SHPC_NSLOTS 0x0C /* 1 byte */
-#define SHPC_FIRST_DEV 0x0D /* 1 byte */
-#define SHPC_PHYS_SLOT 0x0E /* 2 byte */
-#define SHPC_PHYS_NUM_MAX 0x7ff
-#define SHPC_PHYS_NUM_UP 0x2000
-#define SHPC_PHYS_MRL 0x4000
-#define SHPC_PHYS_BUTTON 0x8000
-#define SHPC_SEC_BUS 0x10 /* 2 bytes */
-#define SHPC_SEC_BUS_33 0x0
-#define SHPC_SEC_BUS_66 0x1 /* Unused */
-#define SHPC_SEC_BUS_MASK 0x7
-#define SHPC_MSI_CTL 0x12 /* 1 byte */
-#define SHPC_PROG_IFC 0x13 /* 1 byte */
-#define SHPC_PROG_IFC_1_0 0x1
-#define SHPC_CMD_CODE 0x14 /* 1 byte */
-#define SHPC_CMD_TRGT 0x15 /* 1 byte */
-#define SHPC_CMD_TRGT_MIN 0x1
-#define SHPC_CMD_TRGT_MAX 0x1f
-#define SHPC_CMD_STATUS 0x16 /* 2 bytes */
-#define SHPC_CMD_STATUS_BUSY 0x1
-#define SHPC_CMD_STATUS_MRL_OPEN 0x2
-#define SHPC_CMD_STATUS_INVALID_CMD 0x4
-#define SHPC_CMD_STATUS_INVALID_MODE 0x8
-#define SHPC_INT_LOCATOR 0x18 /* 4 bytes */
-#define SHPC_INT_COMMAND 0x1
-#define SHPC_SERR_LOCATOR 0x1C /* 4 bytes */
-#define SHPC_SERR_INT 0x20 /* 4 bytes */
-#define SHPC_INT_DIS 0x1
-#define SHPC_SERR_DIS 0x2
-#define SHPC_CMD_INT_DIS 0x4
-#define SHPC_ARB_SERR_DIS 0x8
-#define SHPC_CMD_DETECTED 0x10000
-#define SHPC_ARB_DETECTED 0x20000
- /* 4 bytes * slot # (start from 0) */
-#define SHPC_SLOT_REG(s) (0x24 + (s) * 4)
- /* 2 bytes */
-#define SHPC_SLOT_STATUS(s) (0x0 + SHPC_SLOT_REG(s))
-
-/* Same slot state masks are used for command and status registers */
-#define SHPC_SLOT_STATE_MASK 0x03
-#define SHPC_SLOT_STATE_SHIFT \
- (ffs(SHPC_SLOT_STATE_MASK) - 1)
-
-#define SHPC_STATE_NO 0x0
-#define SHPC_STATE_PWRONLY 0x1
-#define SHPC_STATE_ENABLED 0x2
-#define SHPC_STATE_DISABLED 0x3
-
-#define SHPC_SLOT_PWR_LED_MASK 0xC
-#define SHPC_SLOT_PWR_LED_SHIFT \
- (ffs(SHPC_SLOT_PWR_LED_MASK) - 1)
-#define SHPC_SLOT_ATTN_LED_MASK 0x30
-#define SHPC_SLOT_ATTN_LED_SHIFT \
- (ffs(SHPC_SLOT_ATTN_LED_MASK) - 1)
-
-#define SHPC_LED_NO 0x0
-#define SHPC_LED_ON 0x1
-#define SHPC_LED_BLINK 0x2
-#define SHPC_LED_OFF 0x3
-
-#define SHPC_SLOT_STATUS_PWR_FAULT 0x40
-#define SHPC_SLOT_STATUS_BUTTON 0x80
-#define SHPC_SLOT_STATUS_MRL_OPEN 0x100
-#define SHPC_SLOT_STATUS_66 0x200
-#define SHPC_SLOT_STATUS_PRSNT_MASK 0xC00
-#define SHPC_SLOT_STATUS_PRSNT_EMPTY 0x3
-#define SHPC_SLOT_STATUS_PRSNT_25W 0x1
-#define SHPC_SLOT_STATUS_PRSNT_15W 0x2
-#define SHPC_SLOT_STATUS_PRSNT_7_5W 0x0
-
-#define SHPC_SLOT_STATUS_PRSNT_PCIX 0x3000
-
-
- /* 1 byte */
-#define SHPC_SLOT_EVENT_LATCH(s) (0x2 + SHPC_SLOT_REG(s))
- /* 1 byte */
-#define SHPC_SLOT_EVENT_SERR_INT_DIS(d, s) (0x3 + SHPC_SLOT_REG(s))
-#define SHPC_SLOT_EVENT_PRESENCE 0x01
-#define SHPC_SLOT_EVENT_ISOLATED_FAULT 0x02
-#define SHPC_SLOT_EVENT_BUTTON 0x04
-#define SHPC_SLOT_EVENT_MRL 0x08
-#define SHPC_SLOT_EVENT_CONNECTED_FAULT 0x10
-/* Bits below are used for Serr/Int disable only */
-#define SHPC_SLOT_EVENT_MRL_SERR_DIS 0x20
-#define SHPC_SLOT_EVENT_CONNECTED_FAULT_SERR_DIS 0x40
-
-#define SHPC_MIN_SLOTS 1
-#define SHPC_MAX_SLOTS 31
-#define SHPC_SIZEOF(d) SHPC_SLOT_REG((d)->shpc->nslots)
-
-/* SHPC Slot identifiers */
-
-/* Hotplug supported at 31 slots out of the total 32. We reserve slot 0,
- and give the rest of them physical *and* pci numbers starting from 1, so
- they match logical numbers. Note: this means that multiple slots must have
- different chassis number values, to make chassis+physical slot unique.
- TODO: make this configurable? */
-#define SHPC_IDX_TO_LOGICAL(slot) ((slot) + 1)
-#define SHPC_LOGICAL_TO_IDX(target) ((target) - 1)
-#define SHPC_IDX_TO_PCI(slot) ((slot) + 1)
-#define SHPC_PCI_TO_IDX(pci_slot) ((pci_slot) - 1)
-#define SHPC_IDX_TO_PHYSICAL(slot) ((slot) + 1)
-
-static int roundup_pow_of_two(int x)
-{
- x |= (x >> 1);
- x |= (x >> 2);
- x |= (x >> 4);
- x |= (x >> 8);
- x |= (x >> 16);
- return x + 1;
-}
-
-static uint16_t shpc_get_status(SHPCDevice *shpc, int slot, uint16_t msk)
-{
- uint8_t *status = shpc->config + SHPC_SLOT_STATUS(slot);
- return (pci_get_word(status) & msk) >> (ffs(msk) - 1);
-}
-
-static void shpc_set_status(SHPCDevice *shpc,
- int slot, uint8_t value, uint16_t msk)
-{
- uint8_t *status = shpc->config + SHPC_SLOT_STATUS(slot);
- pci_word_test_and_clear_mask(status, msk);
- pci_word_test_and_set_mask(status, value << (ffs(msk) - 1));
-}
-
-static void shpc_interrupt_update(PCIDevice *d)
-{
- SHPCDevice *shpc = d->shpc;
- int slot;
- int level = 0;
- uint32_t serr_int;
- uint32_t int_locator = 0;
-
- /* Update interrupt locator register */
- for (slot = 0; slot < shpc->nslots; ++slot) {
- uint8_t event = shpc->config[SHPC_SLOT_EVENT_LATCH(slot)];
- uint8_t disable = shpc->config[SHPC_SLOT_EVENT_SERR_INT_DIS(d, slot)];
- uint32_t mask = 1 << SHPC_IDX_TO_LOGICAL(slot);
- if (event & ~disable) {
- int_locator |= mask;
- }
- }
- serr_int = pci_get_long(shpc->config + SHPC_SERR_INT);
- if ((serr_int & SHPC_CMD_DETECTED) && !(serr_int & SHPC_CMD_INT_DIS)) {
- int_locator |= SHPC_INT_COMMAND;
- }
- pci_set_long(shpc->config + SHPC_INT_LOCATOR, int_locator);
- level = (!(serr_int & SHPC_INT_DIS) && int_locator) ? 1 : 0;
- if (msi_enabled(d) && shpc->msi_requested != level)
- msi_notify(d, 0);
- else
- qemu_set_irq(d->irq[0], level);
- shpc->msi_requested = level;
-}
-
-static void shpc_set_sec_bus_speed(SHPCDevice *shpc, uint8_t speed)
-{
- switch (speed) {
- case SHPC_SEC_BUS_33:
- shpc->config[SHPC_SEC_BUS] &= ~SHPC_SEC_BUS_MASK;
- shpc->config[SHPC_SEC_BUS] |= speed;
- break;
- default:
- pci_word_test_and_set_mask(shpc->config + SHPC_CMD_STATUS,
- SHPC_CMD_STATUS_INVALID_MODE);
- }
-}
-
-void shpc_reset(PCIDevice *d)
-{
- SHPCDevice *shpc = d->shpc;
- int nslots = shpc->nslots;
- int i;
- memset(shpc->config, 0, SHPC_SIZEOF(d));
- pci_set_byte(shpc->config + SHPC_NSLOTS, nslots);
- pci_set_long(shpc->config + SHPC_SLOTS_33, nslots);
- pci_set_long(shpc->config + SHPC_SLOTS_66, 0);
- pci_set_byte(shpc->config + SHPC_FIRST_DEV, SHPC_IDX_TO_PCI(0));
- pci_set_word(shpc->config + SHPC_PHYS_SLOT,
- SHPC_IDX_TO_PHYSICAL(0) |
- SHPC_PHYS_NUM_UP |
- SHPC_PHYS_MRL |
- SHPC_PHYS_BUTTON);
- pci_set_long(shpc->config + SHPC_SERR_INT, SHPC_INT_DIS |
- SHPC_SERR_DIS |
- SHPC_CMD_INT_DIS |
- SHPC_ARB_SERR_DIS);
- pci_set_byte(shpc->config + SHPC_PROG_IFC, SHPC_PROG_IFC_1_0);
- pci_set_word(shpc->config + SHPC_SEC_BUS, SHPC_SEC_BUS_33);
- for (i = 0; i < shpc->nslots; ++i) {
- pci_set_byte(shpc->config + SHPC_SLOT_EVENT_SERR_INT_DIS(d, i),
- SHPC_SLOT_EVENT_PRESENCE |
- SHPC_SLOT_EVENT_ISOLATED_FAULT |
- SHPC_SLOT_EVENT_BUTTON |
- SHPC_SLOT_EVENT_MRL |
- SHPC_SLOT_EVENT_CONNECTED_FAULT |
- SHPC_SLOT_EVENT_MRL_SERR_DIS |
- SHPC_SLOT_EVENT_CONNECTED_FAULT_SERR_DIS);
- if (shpc->sec_bus->devices[PCI_DEVFN(SHPC_IDX_TO_PCI(i), 0)]) {
- shpc_set_status(shpc, i, SHPC_STATE_ENABLED, SHPC_SLOT_STATE_MASK);
- shpc_set_status(shpc, i, 0, SHPC_SLOT_STATUS_MRL_OPEN);
- shpc_set_status(shpc, i, SHPC_SLOT_STATUS_PRSNT_7_5W,
- SHPC_SLOT_STATUS_PRSNT_MASK);
- shpc_set_status(shpc, i, SHPC_LED_ON, SHPC_SLOT_PWR_LED_MASK);
- } else {
- shpc_set_status(shpc, i, SHPC_STATE_DISABLED, SHPC_SLOT_STATE_MASK);
- shpc_set_status(shpc, i, 1, SHPC_SLOT_STATUS_MRL_OPEN);
- shpc_set_status(shpc, i, SHPC_SLOT_STATUS_PRSNT_EMPTY,
- SHPC_SLOT_STATUS_PRSNT_MASK);
- shpc_set_status(shpc, i, SHPC_LED_OFF, SHPC_SLOT_PWR_LED_MASK);
- }
- shpc_set_status(shpc, i, 0, SHPC_SLOT_STATUS_66);
- }
- shpc_set_sec_bus_speed(shpc, SHPC_SEC_BUS_33);
- shpc->msi_requested = 0;
- shpc_interrupt_update(d);
-}
-
-static void shpc_invalid_command(SHPCDevice *shpc)
-{
- pci_word_test_and_set_mask(shpc->config + SHPC_CMD_STATUS,
- SHPC_CMD_STATUS_INVALID_CMD);
-}
-
-static void shpc_free_devices_in_slot(SHPCDevice *shpc, int slot)
-{
- int devfn;
- int pci_slot = SHPC_IDX_TO_PCI(slot);
- for (devfn = PCI_DEVFN(pci_slot, 0);
- devfn <= PCI_DEVFN(pci_slot, PCI_FUNC_MAX - 1);
- ++devfn) {
- PCIDevice *affected_dev = shpc->sec_bus->devices[devfn];
- if (affected_dev) {
- object_unparent(OBJECT(affected_dev));
- qdev_free(&affected_dev->qdev);
- }
- }
-}
-
-static void shpc_slot_command(SHPCDevice *shpc, uint8_t target,
- uint8_t state, uint8_t power, uint8_t attn)
-{
- uint8_t current_state;
- int slot = SHPC_LOGICAL_TO_IDX(target);
- if (target < SHPC_CMD_TRGT_MIN || slot >= shpc->nslots) {
- shpc_invalid_command(shpc);
- return;
- }
- current_state = shpc_get_status(shpc, slot, SHPC_SLOT_STATE_MASK);
- if (current_state == SHPC_STATE_ENABLED && state == SHPC_STATE_PWRONLY) {
- shpc_invalid_command(shpc);
- return;
- }
-
- switch (power) {
- case SHPC_LED_NO:
- break;
- default:
- /* TODO: send event to monitor */
- shpc_set_status(shpc, slot, power, SHPC_SLOT_PWR_LED_MASK);
- }
- switch (attn) {
- case SHPC_LED_NO:
- break;
- default:
- /* TODO: send event to monitor */
- shpc_set_status(shpc, slot, attn, SHPC_SLOT_ATTN_LED_MASK);
- }
-
- if ((current_state == SHPC_STATE_DISABLED && state == SHPC_STATE_PWRONLY) ||
- (current_state == SHPC_STATE_DISABLED && state == SHPC_STATE_ENABLED)) {
- shpc_set_status(shpc, slot, state, SHPC_SLOT_STATE_MASK);
- } else if ((current_state == SHPC_STATE_ENABLED ||
- current_state == SHPC_STATE_PWRONLY) &&
- state == SHPC_STATE_DISABLED) {
- shpc_set_status(shpc, slot, state, SHPC_SLOT_STATE_MASK);
- power = shpc_get_status(shpc, slot, SHPC_SLOT_PWR_LED_MASK);
- /* TODO: track what monitor requested. */
- /* Look at LED to figure out whether it's ok to remove the device. */
- if (power == SHPC_LED_OFF) {
- shpc_free_devices_in_slot(shpc, slot);
- shpc_set_status(shpc, slot, 1, SHPC_SLOT_STATUS_MRL_OPEN);
- shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_EMPTY,
- SHPC_SLOT_STATUS_PRSNT_MASK);
- shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |=
- SHPC_SLOT_EVENT_BUTTON |
- SHPC_SLOT_EVENT_MRL |
- SHPC_SLOT_EVENT_PRESENCE;
- }
- }
-}
-
-static void shpc_command(SHPCDevice *shpc)
-{
- uint8_t code = pci_get_byte(shpc->config + SHPC_CMD_CODE);
- uint8_t speed;
- uint8_t target;
- uint8_t attn;
- uint8_t power;
- uint8_t state;
- int i;
-
- /* Clear status from the previous command. */
- pci_word_test_and_clear_mask(shpc->config + SHPC_CMD_STATUS,
- SHPC_CMD_STATUS_BUSY |
- SHPC_CMD_STATUS_MRL_OPEN |
- SHPC_CMD_STATUS_INVALID_CMD |
- SHPC_CMD_STATUS_INVALID_MODE);
- switch (code) {
- case 0x00 ... 0x3f:
- target = shpc->config[SHPC_CMD_TRGT] & SHPC_CMD_TRGT_MAX;
- state = (code & SHPC_SLOT_STATE_MASK) >> SHPC_SLOT_STATE_SHIFT;
- power = (code & SHPC_SLOT_PWR_LED_MASK) >> SHPC_SLOT_PWR_LED_SHIFT;
- attn = (code & SHPC_SLOT_ATTN_LED_MASK) >> SHPC_SLOT_ATTN_LED_SHIFT;
- shpc_slot_command(shpc, target, state, power, attn);
- break;
- case 0x40 ... 0x47:
- speed = code & SHPC_SEC_BUS_MASK;
- shpc_set_sec_bus_speed(shpc, speed);
- break;
- case 0x48:
- /* Power only all slots */
- /* first verify no slots are enabled */
- for (i = 0; i < shpc->nslots; ++i) {
- state = shpc_get_status(shpc, i, SHPC_SLOT_STATE_MASK);
- if (state == SHPC_STATE_ENABLED) {
- shpc_invalid_command(shpc);
- goto done;
- }
- }
- for (i = 0; i < shpc->nslots; ++i) {
- if (!(shpc_get_status(shpc, i, SHPC_SLOT_STATUS_MRL_OPEN))) {
- shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN,
- SHPC_STATE_PWRONLY, SHPC_LED_ON, SHPC_LED_NO);
- } else {
- shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN,
- SHPC_STATE_NO, SHPC_LED_OFF, SHPC_LED_NO);
- }
- }
- break;
- case 0x49:
- /* Enable all slots */
- /* TODO: Spec says this shall fail if some are already enabled.
- * This doesn't make sense - why not? a spec bug? */
- for (i = 0; i < shpc->nslots; ++i) {
- state = shpc_get_status(shpc, i, SHPC_SLOT_STATE_MASK);
- if (state == SHPC_STATE_ENABLED) {
- shpc_invalid_command(shpc);
- goto done;
- }
- }
- for (i = 0; i < shpc->nslots; ++i) {
- if (!(shpc_get_status(shpc, i, SHPC_SLOT_STATUS_MRL_OPEN))) {
- shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN,
- SHPC_STATE_ENABLED, SHPC_LED_ON, SHPC_LED_NO);
- } else {
- shpc_slot_command(shpc, i + SHPC_CMD_TRGT_MIN,
- SHPC_STATE_NO, SHPC_LED_OFF, SHPC_LED_NO);
- }
- }
- break;
- default:
- shpc_invalid_command(shpc);
- break;
- }
-done:
- pci_long_test_and_set_mask(shpc->config + SHPC_SERR_INT, SHPC_CMD_DETECTED);
-}
-
-static void shpc_write(PCIDevice *d, unsigned addr, uint64_t val, int l)
-{
- SHPCDevice *shpc = d->shpc;
- int i;
- if (addr >= SHPC_SIZEOF(d)) {
- return;
- }
- l = MIN(l, SHPC_SIZEOF(d) - addr);
-
- /* TODO: code duplicated from pci.c */
- for (i = 0; i < l; val >>= 8, ++i) {
- unsigned a = addr + i;
- uint8_t wmask = shpc->wmask[a];
- uint8_t w1cmask = shpc->w1cmask[a];
- assert(!(wmask & w1cmask));
- shpc->config[a] = (shpc->config[a] & ~wmask) | (val & wmask);
- shpc->config[a] &= ~(val & w1cmask); /* W1C: Write 1 to Clear */
- }
- if (ranges_overlap(addr, l, SHPC_CMD_CODE, 2)) {
- shpc_command(shpc);
- }
- shpc_interrupt_update(d);
-}
-
-static uint64_t shpc_read(PCIDevice *d, unsigned addr, int l)
-{
- uint64_t val = 0x0;
- if (addr >= SHPC_SIZEOF(d)) {
- return val;
- }
- l = MIN(l, SHPC_SIZEOF(d) - addr);
- memcpy(&val, d->shpc->config + addr, l);
- return val;
-}
-
-/* SHPC Bridge Capability */
-#define SHPC_CAP_LENGTH 0x08
-#define SHPC_CAP_DWORD_SELECT 0x2 /* 1 byte */
-#define SHPC_CAP_CxP 0x3 /* 1 byte: CSP, CIP */
-#define SHPC_CAP_DWORD_DATA 0x4 /* 4 bytes */
-#define SHPC_CAP_CSP_MASK 0x4
-#define SHPC_CAP_CIP_MASK 0x8
-
-static uint8_t shpc_cap_dword(PCIDevice *d)
-{
- return pci_get_byte(d->config + d->shpc->cap + SHPC_CAP_DWORD_SELECT);
-}
-
-/* Update dword data capability register */
-static void shpc_cap_update_dword(PCIDevice *d)
-{
- unsigned data;
- data = shpc_read(d, shpc_cap_dword(d) * 4, 4);
- pci_set_long(d->config + d->shpc->cap + SHPC_CAP_DWORD_DATA, data);
-}
-
-/* Add SHPC capability to the config space for the device. */
-static int shpc_cap_add_config(PCIDevice *d)
-{
- uint8_t *config;
- int config_offset;
- config_offset = pci_add_capability(d, PCI_CAP_ID_SHPC,
- 0, SHPC_CAP_LENGTH);
- if (config_offset < 0) {
- return config_offset;
- }
- config = d->config + config_offset;
-
- pci_set_byte(config + SHPC_CAP_DWORD_SELECT, 0);
- pci_set_byte(config + SHPC_CAP_CxP, 0);
- pci_set_long(config + SHPC_CAP_DWORD_DATA, 0);
- d->shpc->cap = config_offset;
- /* Make dword select and data writeable. */
- pci_set_byte(d->wmask + config_offset + SHPC_CAP_DWORD_SELECT, 0xff);
- pci_set_long(d->wmask + config_offset + SHPC_CAP_DWORD_DATA, 0xffffffff);
- return 0;
-}
-
-static uint64_t shpc_mmio_read(void *opaque, target_phys_addr_t addr,
- unsigned size)
-{
- return shpc_read(opaque, addr, size);
-}
-
-static void shpc_mmio_write(void *opaque, target_phys_addr_t addr,
- uint64_t val, unsigned size)
-{
- shpc_write(opaque, addr, val, size);
-}
-
-static const MemoryRegionOps shpc_mmio_ops = {
- .read = shpc_mmio_read,
- .write = shpc_mmio_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
- .valid = {
- /* SHPC ECN requires dword accesses, but the original 1.0 spec doesn't.
- * It's easier to suppport all sizes than worry about it. */
- .min_access_size = 1,
- .max_access_size = 4,
- },
-};
-
-static int shpc_device_hotplug(DeviceState *qdev, PCIDevice *affected_dev,
- PCIHotplugState hotplug_state)
-{
- int pci_slot = PCI_SLOT(affected_dev->devfn);
- uint8_t state;
- uint8_t led;
- PCIDevice *d = DO_UPCAST(PCIDevice, qdev, qdev);
- SHPCDevice *shpc = d->shpc;
- int slot = SHPC_PCI_TO_IDX(pci_slot);
- if (pci_slot < SHPC_IDX_TO_PCI(0) || slot >= shpc->nslots) {
- error_report("Unsupported PCI slot %d for standard hotplug "
- "controller. Valid slots are between %d and %d.",
- pci_slot, SHPC_IDX_TO_PCI(0),
- SHPC_IDX_TO_PCI(shpc->nslots) - 1);
- return -1;
- }
- /* Don't send event when device is enabled during qemu machine creation:
- * it is present on boot, no hotplug event is necessary. We do send an
- * event when the device is disabled later. */
- if (hotplug_state == PCI_COLDPLUG_ENABLED) {
- shpc_set_status(shpc, slot, 0, SHPC_SLOT_STATUS_MRL_OPEN);
- shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_7_5W,
- SHPC_SLOT_STATUS_PRSNT_MASK);
- return 0;
- }
- if (hotplug_state == PCI_HOTPLUG_DISABLED) {
- shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |= SHPC_SLOT_EVENT_BUTTON;
- state = shpc_get_status(shpc, slot, SHPC_SLOT_STATE_MASK);
- led = shpc_get_status(shpc, slot, SHPC_SLOT_PWR_LED_MASK);
- if (state == SHPC_STATE_DISABLED && led == SHPC_LED_OFF) {
- shpc_free_devices_in_slot(shpc, slot);
- shpc_set_status(shpc, slot, 1, SHPC_SLOT_STATUS_MRL_OPEN);
- shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_EMPTY,
- SHPC_SLOT_STATUS_PRSNT_MASK);
- shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |=
- SHPC_SLOT_EVENT_MRL |
- SHPC_SLOT_EVENT_PRESENCE;
- }
- } else {
- /* This could be a cancellation of the previous removal.
- * We check MRL state to figure out. */
- if (shpc_get_status(shpc, slot, SHPC_SLOT_STATUS_MRL_OPEN)) {
- shpc_set_status(shpc, slot, 0, SHPC_SLOT_STATUS_MRL_OPEN);
- shpc_set_status(shpc, slot, SHPC_SLOT_STATUS_PRSNT_7_5W,
- SHPC_SLOT_STATUS_PRSNT_MASK);
- shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |=
- SHPC_SLOT_EVENT_BUTTON |
- SHPC_SLOT_EVENT_MRL |
- SHPC_SLOT_EVENT_PRESENCE;
- } else {
- /* Press attention button to cancel removal */
- shpc->config[SHPC_SLOT_EVENT_LATCH(slot)] |=
- SHPC_SLOT_EVENT_BUTTON;
- }
- }
- shpc_set_status(shpc, slot, 0, SHPC_SLOT_STATUS_66);
- shpc_interrupt_update(d);
- return 0;
-}
-
-/* Initialize the SHPC structure in bridge's BAR. */
-int shpc_init(PCIDevice *d, PCIBus *sec_bus, MemoryRegion *bar, unsigned offset)
-{
- int i, ret;
- int nslots = SHPC_MAX_SLOTS; /* TODO: qdev property? */
- SHPCDevice *shpc = d->shpc = g_malloc0(sizeof(*d->shpc));
- shpc->sec_bus = sec_bus;
- ret = shpc_cap_add_config(d);
- if (ret) {
- g_free(d->shpc);
- return ret;
- }
- if (nslots < SHPC_MIN_SLOTS) {
- return 0;
- }
- if (nslots > SHPC_MAX_SLOTS ||
- SHPC_IDX_TO_PCI(nslots) > PCI_SLOT_MAX) {
- /* TODO: report an error mesage that makes sense. */
- return -EINVAL;
- }
- shpc->nslots = nslots;
- shpc->config = g_malloc0(SHPC_SIZEOF(d));
- shpc->cmask = g_malloc0(SHPC_SIZEOF(d));
- shpc->wmask = g_malloc0(SHPC_SIZEOF(d));
- shpc->w1cmask = g_malloc0(SHPC_SIZEOF(d));
-
- shpc_reset(d);
-
- pci_set_long(shpc->config + SHPC_BASE_OFFSET, offset);
-
- pci_set_byte(shpc->wmask + SHPC_CMD_CODE, 0xff);
- pci_set_byte(shpc->wmask + SHPC_CMD_TRGT, SHPC_CMD_TRGT_MAX);
- pci_set_byte(shpc->wmask + SHPC_CMD_TRGT, SHPC_CMD_TRGT_MAX);
- pci_set_long(shpc->wmask + SHPC_SERR_INT,
- SHPC_INT_DIS |
- SHPC_SERR_DIS |
- SHPC_CMD_INT_DIS |
- SHPC_ARB_SERR_DIS);
- pci_set_long(shpc->w1cmask + SHPC_SERR_INT,
- SHPC_CMD_DETECTED |
- SHPC_ARB_DETECTED);
- for (i = 0; i < nslots; ++i) {
- pci_set_byte(shpc->wmask +
- SHPC_SLOT_EVENT_SERR_INT_DIS(d, i),
- SHPC_SLOT_EVENT_PRESENCE |
- SHPC_SLOT_EVENT_ISOLATED_FAULT |
- SHPC_SLOT_EVENT_BUTTON |
- SHPC_SLOT_EVENT_MRL |
- SHPC_SLOT_EVENT_CONNECTED_FAULT |
- SHPC_SLOT_EVENT_MRL_SERR_DIS |
- SHPC_SLOT_EVENT_CONNECTED_FAULT_SERR_DIS);
- pci_set_byte(shpc->w1cmask +
- SHPC_SLOT_EVENT_LATCH(i),
- SHPC_SLOT_EVENT_PRESENCE |
- SHPC_SLOT_EVENT_ISOLATED_FAULT |
- SHPC_SLOT_EVENT_BUTTON |
- SHPC_SLOT_EVENT_MRL |
- SHPC_SLOT_EVENT_CONNECTED_FAULT);
- }
-
- /* TODO: init cmask */
- memory_region_init_io(&shpc->mmio, &shpc_mmio_ops, d, "shpc-mmio",
- SHPC_SIZEOF(d));
- shpc_cap_update_dword(d);
- memory_region_add_subregion(bar, offset, &shpc->mmio);
- pci_bus_hotplug(sec_bus, shpc_device_hotplug, &d->qdev);
-
- d->cap_present |= QEMU_PCI_CAP_SHPC;
- return 0;
-}
-
-int shpc_bar_size(PCIDevice *d)
-{
- return roundup_pow_of_two(SHPC_SLOT_REG(SHPC_MAX_SLOTS));
-}
-
-void shpc_cleanup(PCIDevice *d, MemoryRegion *bar)
-{
- SHPCDevice *shpc = d->shpc;
- d->cap_present &= ~QEMU_PCI_CAP_SHPC;
- memory_region_del_subregion(bar, &shpc->mmio);
- /* TODO: cleanup config space changes? */
- g_free(shpc->config);
- g_free(shpc->cmask);
- g_free(shpc->wmask);
- g_free(shpc->w1cmask);
- memory_region_destroy(&shpc->mmio);
- g_free(shpc);
-}
-
-void shpc_cap_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int l)
-{
- if (!ranges_overlap(addr, l, d->shpc->cap, SHPC_CAP_LENGTH)) {
- return;
- }
- if (ranges_overlap(addr, l, d->shpc->cap + SHPC_CAP_DWORD_DATA, 4)) {
- unsigned dword_data;
- dword_data = pci_get_long(d->shpc->config + d->shpc->cap
- + SHPC_CAP_DWORD_DATA);
- shpc_write(d, shpc_cap_dword(d) * 4, dword_data, 4);
- }
- /* Update cap dword data in case guest is going to read it. */
- shpc_cap_update_dword(d);
-}
-
-static void shpc_save(QEMUFile *f, void *pv, size_t size)
-{
- PCIDevice *d = container_of(pv, PCIDevice, shpc);
- qemu_put_buffer(f, d->shpc->config, SHPC_SIZEOF(d));
-}
-
-static int shpc_load(QEMUFile *f, void *pv, size_t size)
-{
- PCIDevice *d = container_of(pv, PCIDevice, shpc);
- int ret = qemu_get_buffer(f, d->shpc->config, SHPC_SIZEOF(d));
- if (ret != SHPC_SIZEOF(d)) {
- return -EINVAL;
- }
- /* Make sure we don't lose notifications. An extra interrupt is harmless. */
- d->shpc->msi_requested = 0;
- shpc_interrupt_update(d);
- return 0;
-}
-
-VMStateInfo shpc_vmstate_info = {
- .name = "shpc",
- .get = shpc_load,
- .put = shpc_save,
-};