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Re: [Qemu-ppc] [PATCH 8/8] libqos: Change PCI accessors to take opaque B
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From: |
David Gibson |
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Subject: |
Re: [Qemu-ppc] [PATCH 8/8] libqos: Change PCI accessors to take opaque BAR handle |
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Date: |
Wed, 19 Oct 2016 15:06:14 +1100 |
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User-agent: |
Mutt/1.7.0 (2016-08-17) |
On Tue, Oct 18, 2016 at 06:48:16PM +0200, Laurent Vivier wrote:
>
>
> On 18/10/2016 12:52, David Gibson wrote:
> > The usual use model for the libqos PCI functions is to map a specific PCI
> > BAR using qpci_iomap() then pass the returned token into IO accessor
> > functions. This, and the fact that iomap() returns a (void *) which
> > actually contains a PCI space address, kind of suggests that the return
> > value from iomap is supposed to be an opaque token.
> >
> > ..except that the callers expect to be able to add offsets to it. Which
> > also assumes the compiler will support pointer arithmetic on a (void *),
> > and treat it as working with byte offsets.
> >
> > To clarify this situation change iomap() and the IO accessors to take
> > a definitely opaque BAR handle (enforced with a wrapper struct) along with
> > an offset within the BAR. This changes both the functions and all the
> > callers.
> >
> > A few notes:
> > * Asserts that iomap() returns non-NULL are removed in some places;
> > iomap() already asserts if it can't map the BAR
> > * In ide-test.c we change explicit outb() etc. calls to matching
> > qpci_io_writeb() calls. That makes the test more portable, and removes
> > assumptions that the test case shouldn't be making about how iomap()'s
> > return value is formatted internally.
> >
> > Signed-off-by: David Gibson <address@hidden>
> >
> > # Conflicts:
> > # tests/libqos/virtio-pci.c
>
> A sequel of a cherry-pick?
>
> > ---
> > tests/ahci-test.c | 4 +-
> > tests/e1000e-test.c | 7 ++-
> > tests/ide-test.c | 23 +++++----
> > tests/ivshmem-test.c | 28 +++++------
> > tests/libqos/ahci.c | 3 +-
> > tests/libqos/ahci.h | 6 +--
> > tests/libqos/pci.c | 125
> > +++++++++++++++++++++-------------------------
> > tests/libqos/pci.h | 39 +++++++++------
> > tests/libqos/usb.c | 6 +--
> > tests/libqos/usb.h | 2 +-
> > tests/libqos/virtio-pci.c | 113 +++++++++++++++++++++--------------------
> > tests/libqos/virtio-pci.h | 2 +-
> > tests/rtl8139-test.c | 10 ++--
> > tests/usb-hcd-ehci-test.c | 5 +-
>
> Perhaps you can move tco-test update in this series?
>
> > 14 files changed, 186 insertions(+), 187 deletions(-)
> >
> > diff --git a/tests/ahci-test.c b/tests/ahci-test.c
> > index 9c0adce..4358631 100644
> > --- a/tests/ahci-test.c
> > +++ b/tests/ahci-test.c
> > @@ -90,12 +90,12 @@ static void verify_state(AHCIQState *ahci)
> > g_assert_cmphex(ahci_fingerprint, ==, ahci->fingerprint);
> >
> > /* If we haven't initialized, this is as much as can be validated. */
> > - if (!ahci->hba_base) {
> > + if (!ahci->hba_bar.addr) {
> > return;
> > }
> >
> > hba_base = (uint64_t)qpci_config_readl(ahci->dev, PCI_BASE_ADDRESS_5);
> > - hba_stored = (uint64_t)(uintptr_t)ahci->hba_base;
> > + hba_stored = ahci->hba_bar.addr;
> > g_assert_cmphex(hba_base, ==, hba_stored);
> >
> > g_assert_cmphex(ahci_rreg(ahci, AHCI_CAP), ==, ahci->cap);
> > diff --git a/tests/e1000e-test.c b/tests/e1000e-test.c
> > index 3979b20..8c42ca9 100644
> > --- a/tests/e1000e-test.c
> > +++ b/tests/e1000e-test.c
> > @@ -87,7 +87,7 @@
> >
> > typedef struct e1000e_device {
> > QPCIDevice *pci_dev;
> > - void *mac_regs;
> > + QPCIBar mac_regs;
> >
> > uint64_t tx_ring;
> > uint64_t rx_ring;
> > @@ -119,12 +119,12 @@ static QPCIDevice *e1000e_device_find(QPCIBus *bus)
> >
> > static void e1000e_macreg_write(e1000e_device *d, uint32_t reg, uint32_t
> > val)
> > {
> > - qpci_io_writel(d->pci_dev, d->mac_regs + reg, val);
> > + qpci_io_writel(d->pci_dev, d->mac_regs, reg, val);
> > }
> >
> > static uint32_t e1000e_macreg_read(e1000e_device *d, uint32_t reg)
> > {
> > - return qpci_io_readl(d->pci_dev, d->mac_regs + reg);
> > + return qpci_io_readl(d->pci_dev, d->mac_regs, reg);
> > }
> >
> > static void e1000e_device_init(QPCIBus *bus, e1000e_device *d)
> > @@ -138,7 +138,6 @@ static void e1000e_device_init(QPCIBus *bus,
> > e1000e_device *d)
> >
> > /* Map BAR0 (mac registers) */
> > d->mac_regs = qpci_iomap(d->pci_dev, 0, NULL);
> > - g_assert_nonnull(d->mac_regs);
> >
> > /* Reset the device */
> > val = e1000e_macreg_read(d, E1000E_CTRL);
> > diff --git a/tests/ide-test.c b/tests/ide-test.c
> > index a8a4081..dc08536 100644
> > --- a/tests/ide-test.c
> > +++ b/tests/ide-test.c
> > @@ -137,7 +137,7 @@ static void ide_test_quit(void)
> > qtest_end();
> > }
> >
> > -static QPCIDevice *get_pci_device(uint16_t *bmdma_base)
> > +static QPCIDevice *get_pci_device(QPCIBar *bmdma_bar)
> > {
> > QPCIDevice *dev;
> > uint16_t vendor_id, device_id;
> > @@ -156,7 +156,7 @@ static QPCIDevice *get_pci_device(uint16_t *bmdma_base)
> > g_assert(device_id == PCI_DEVICE_ID_INTEL_82371SB_1);
> >
> > /* Map bmdma BAR */
> > - *bmdma_base = (uint16_t)(uintptr_t) qpci_iomap(dev, 4, NULL);
> > + *bmdma_bar = qpci_iomap(dev, 4, NULL);
> >
> > qpci_device_enable(dev);
> >
> > @@ -182,14 +182,14 @@ static int send_dma_request(int cmd, uint64_t sector,
> > int nb_sectors,
> > void(*post_exec)(uint64_t sector, int
> > nb_sectors))
> > {
> > QPCIDevice *dev;
> > - uint16_t bmdma_base;
> > + QPCIBar bmdma_bar;
> > uintptr_t guest_prdt;
> > size_t len;
> > bool from_dev;
> > uint8_t status;
> > int flags;
> >
> > - dev = get_pci_device(&bmdma_base);
> > + dev = get_pci_device(&bmdma_bar);
> >
> > flags = cmd & ~0xff;
> > cmd &= 0xff;
> > @@ -217,14 +217,14 @@ static int send_dma_request(int cmd, uint64_t sector,
> > int nb_sectors,
> > outb(IDE_BASE + reg_device, 0 | LBA);
> >
> > /* Stop any running transfer, clear any pending interrupt */
> > - outb(bmdma_base + bmreg_cmd, 0);
> > - outb(bmdma_base + bmreg_status, BM_STS_INTR);
> > + qpci_io_writeb(dev, bmdma_bar, bmreg_cmd, 0);
> > + qpci_io_writeb(dev, bmdma_bar, bmreg_status, BM_STS_INTR);
> >
> > /* Setup PRDT */
> > len = sizeof(*prdt) * prdt_entries;
> > guest_prdt = guest_alloc(guest_malloc, len);
> > memwrite(guest_prdt, prdt, len);
> > - outl(bmdma_base + bmreg_prdt, guest_prdt);
> > + qpci_io_writel(dev, bmdma_bar, bmreg_prdt, guest_prdt);
> >
> > /* ATA DMA command */
> > if (cmd == CMD_PACKET) {
> > @@ -244,15 +244,16 @@ static int send_dma_request(int cmd, uint64_t sector,
> > int nb_sectors,
> > }
> >
> > /* Start DMA transfer */
> > - outb(bmdma_base + bmreg_cmd, BM_CMD_START | (from_dev ? BM_CMD_WRITE :
> > 0));
> > + qpci_io_writeb(dev, bmdma_bar, bmreg_cmd,
> > + BM_CMD_START | (from_dev ? BM_CMD_WRITE : 0));
> >
> > if (flags & CMDF_ABORT) {
> > - outb(bmdma_base + bmreg_cmd, 0);
> > + qpci_io_writeb(dev, bmdma_bar, bmreg_cmd, 0);
> > }
> >
> > /* Wait for the DMA transfer to complete */
> > do {
> > - status = inb(bmdma_base + bmreg_status);
> > + status = qpci_io_readb(dev, bmdma_bar, bmreg_status);
> > } while ((status & (BM_STS_ACTIVE | BM_STS_INTR)) == BM_STS_ACTIVE);
> >
> > g_assert_cmpint(get_irq(IDE_PRIMARY_IRQ), ==, !!(status &
> > BM_STS_INTR));
> > @@ -266,7 +267,7 @@ static int send_dma_request(int cmd, uint64_t sector,
> > int nb_sectors,
> >
> > /* Stop DMA transfer if still active */
> > if (status & BM_STS_ACTIVE) {
> > - outb(bmdma_base + bmreg_cmd, 0);
> > + qpci_io_writeb(dev, bmdma_bar, bmreg_cmd, 0);
> > }
> >
> > free_pci_device(dev);
> > diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
> > index 97a887e..f7c5bf4 100644
> > --- a/tests/ivshmem-test.c
> > +++ b/tests/ivshmem-test.c
> > @@ -41,7 +41,7 @@ static QPCIDevice *get_device(QPCIBus *pcibus)
> >
> > typedef struct _IVState {
> > QTestState *qtest;
> > - void *reg_base, *mem_base;
> > + QPCIBar reg_bar, mem_bar;
> > QPCIBus *pcibus;
> > QPCIDevice *dev;
> > } IVState;
> > @@ -75,7 +75,7 @@ static inline unsigned in_reg(IVState *s, enum Reg reg)
> > unsigned res;
> >
> > global_qtest = s->qtest;
> > - res = qpci_io_readl(s->dev, s->reg_base + reg);
> > + res = qpci_io_readl(s->dev, s->reg_bar, reg);
> > g_test_message("*%s -> %x\n", name, res);
> > global_qtest = qtest;
> >
> > @@ -89,7 +89,7 @@ static inline void out_reg(IVState *s, enum Reg reg,
> > unsigned v)
> >
> > global_qtest = s->qtest;
> > g_test_message("%x -> *%s\n", v, name);
> > - qpci_io_writel(s->dev, s->reg_base + reg, v);
> > + qpci_io_writel(s->dev, s->reg_bar, reg, v);
> > global_qtest = qtest;
> > }
> >
> > @@ -108,16 +108,14 @@ static void setup_vm_cmd(IVState *s, const char *cmd,
> > bool msix)
> > s->pcibus = qpci_init_pc(NULL);
> > s->dev = get_device(s->pcibus);
> >
> > - s->reg_base = qpci_iomap(s->dev, 0, &barsize);
> > - g_assert_nonnull(s->reg_base);
> > + s->reg_bar = qpci_iomap(s->dev, 0, &barsize);
> > g_assert_cmpuint(barsize, ==, 256);
> >
> > if (msix) {
> > qpci_msix_enable(s->dev);
> > }
> >
> > - s->mem_base = qpci_iomap(s->dev, 2, &barsize);
> > - g_assert_nonnull(s->mem_base);
> > + s->mem_bar = qpci_iomap(s->dev, 2, &barsize);
> > g_assert_cmpuint(barsize, ==, TMPSHMSIZE);
> >
> > qpci_device_enable(s->dev);
> > @@ -169,7 +167,7 @@ static void test_ivshmem_single(void)
> > for (i = 0; i < G_N_ELEMENTS(data); i++) {
> > data[i] = i;
> > }
> > - qpci_memwrite(s->dev, s->mem_base, data, sizeof(data));
> > + qpci_memwrite(s->dev, s->mem_bar, 0, data, sizeof(data));
> >
> > /* verify write */
> > for (i = 0; i < G_N_ELEMENTS(data); i++) {
> > @@ -178,7 +176,7 @@ static void test_ivshmem_single(void)
> >
> > /* read it back and verify read */
> > memset(data, 0, sizeof(data));
> > - qpci_memread(s->dev, s->mem_base, data, sizeof(data));
> > + qpci_memread(s->dev, s->mem_bar, 0, data, sizeof(data));
> > for (i = 0; i < G_N_ELEMENTS(data); i++) {
> > g_assert_cmpuint(data[i], ==, i);
> > }
> > @@ -201,29 +199,29 @@ static void test_ivshmem_pair(void)
> >
> > /* host write, guest 1 & 2 read */
> > memset(tmpshmem, 0x42, TMPSHMSIZE);
> > - qpci_memread(s1->dev, s1->mem_base, data, TMPSHMSIZE);
> > + qpci_memread(s1->dev, s1->mem_bar, 0, data, TMPSHMSIZE);
> > for (i = 0; i < TMPSHMSIZE; i++) {
> > g_assert_cmpuint(data[i], ==, 0x42);
> > }
> > - qpci_memread(s2->dev, s2->mem_base, data, TMPSHMSIZE);
> > + qpci_memread(s2->dev, s2->mem_bar, 0, data, TMPSHMSIZE);
> > for (i = 0; i < TMPSHMSIZE; i++) {
> > g_assert_cmpuint(data[i], ==, 0x42);
> > }
> >
> > /* guest 1 write, guest 2 read */
> > memset(data, 0x43, TMPSHMSIZE);
> > - qpci_memwrite(s1->dev, s1->mem_base, data, TMPSHMSIZE);
> > + qpci_memwrite(s1->dev, s1->mem_bar, 0, data, TMPSHMSIZE);
> > memset(data, 0, TMPSHMSIZE);
> > - qpci_memread(s2->dev, s2->mem_base, data, TMPSHMSIZE);
> > + qpci_memread(s2->dev, s2->mem_bar, 0, data, TMPSHMSIZE);
> > for (i = 0; i < TMPSHMSIZE; i++) {
> > g_assert_cmpuint(data[i], ==, 0x43);
> > }
> >
> > /* guest 2 write, guest 1 read */
> > memset(data, 0x44, TMPSHMSIZE);
> > - qpci_memwrite(s2->dev, s2->mem_base, data, TMPSHMSIZE);
> > + qpci_memwrite(s2->dev, s2->mem_bar, 0, data, TMPSHMSIZE);
> > memset(data, 0, TMPSHMSIZE);
> > - qpci_memread(s1->dev, s2->mem_base, data, TMPSHMSIZE);
> > + qpci_memread(s1->dev, s2->mem_bar, 0, data, TMPSHMSIZE);
> > for (i = 0; i < TMPSHMSIZE; i++) {
> > g_assert_cmpuint(data[i], ==, 0x44);
> > }
> > diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
> > index 716ab79..43b6695 100644
> > --- a/tests/libqos/ahci.c
> > +++ b/tests/libqos/ahci.c
> > @@ -210,8 +210,7 @@ void ahci_pci_enable(AHCIQState *ahci)
> > void start_ahci_device(AHCIQState *ahci)
> > {
> > /* Map AHCI's ABAR (BAR5) */
> > - ahci->hba_base = qpci_iomap(ahci->dev, 5, &ahci->barsize);
> > - g_assert(ahci->hba_base);
> > + ahci->hba_bar = qpci_iomap(ahci->dev, 5, &ahci->barsize);
> >
> > /* turns on pci.cmd.iose, pci.cmd.mse and pci.cmd.bme */
> > qpci_device_enable(ahci->dev);
> > diff --git a/tests/libqos/ahci.h b/tests/libqos/ahci.h
> > index c69fb5a..6c4abf6 100644
> > --- a/tests/libqos/ahci.h
> > +++ b/tests/libqos/ahci.h
> > @@ -321,7 +321,7 @@ typedef struct AHCIPortQState {
> > typedef struct AHCIQState {
> > QOSState *parent;
> > QPCIDevice *dev;
> > - void *hba_base;
> > + QPCIBar hba_bar;
> > uint64_t barsize;
> > uint32_t fingerprint;
> > uint32_t cap;
> > @@ -488,12 +488,12 @@ typedef struct AHCIOpts {
> >
> > static inline uint32_t ahci_mread(AHCIQState *ahci, size_t offset)
> > {
> > - return qpci_io_readl(ahci->dev, ahci->hba_base + offset);
> > + return qpci_io_readl(ahci->dev, ahci->hba_bar, offset);
> > }
> >
> > static inline void ahci_mwrite(AHCIQState *ahci, size_t offset, uint32_t
> > value)
> > {
> > - qpci_io_writel(ahci->dev, ahci->hba_base + offset, value);
> > + qpci_io_writel(ahci->dev, ahci->hba_bar, offset, value);
> > }
> >
> > static inline uint32_t ahci_rreg(AHCIQState *ahci, uint32_t reg_num)
> > diff --git a/tests/libqos/pci.c b/tests/libqos/pci.c
> > index bbacbcf..875c517 100644
> > --- a/tests/libqos/pci.c
> > +++ b/tests/libqos/pci.c
> > @@ -104,7 +104,6 @@ void qpci_msix_enable(QPCIDevice *dev)
> > uint32_t table;
> > uint8_t bir_table;
> > uint8_t bir_pba;
> > - void *offset;
> >
> > addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
> > g_assert_cmphex(addr, !=, 0);
> > @@ -114,18 +113,16 @@ void qpci_msix_enable(QPCIDevice *dev)
> >
> > table = qpci_config_readl(dev, addr + PCI_MSIX_TABLE);
> > bir_table = table & PCI_MSIX_FLAGS_BIRMASK;
> > - offset = qpci_iomap(dev, bir_table, NULL);
> > - dev->msix_table = offset + (table & ~PCI_MSIX_FLAGS_BIRMASK);
> > + dev->msix_table_bar = qpci_iomap(dev, bir_table, NULL);
> > + dev->msix_table_off = table & ~PCI_MSIX_FLAGS_BIRMASK;
> >
> > table = qpci_config_readl(dev, addr + PCI_MSIX_PBA);
> > bir_pba = table & PCI_MSIX_FLAGS_BIRMASK;
> > if (bir_pba != bir_table) {
> > - offset = qpci_iomap(dev, bir_pba, NULL);
> > + dev->msix_pba_bar = qpci_iomap(dev, bir_pba, NULL);
> > }
> > - dev->msix_pba = offset + (table & ~PCI_MSIX_FLAGS_BIRMASK);
> > + dev->msix_pba_off = table & ~PCI_MSIX_FLAGS_BIRMASK;
> >
> > - g_assert(dev->msix_table != NULL);
> > - g_assert(dev->msix_pba != NULL);
> > dev->msix_enabled = true;
> > }
> >
> > @@ -141,22 +138,25 @@ void qpci_msix_disable(QPCIDevice *dev)
> > qpci_config_writew(dev, addr + PCI_MSIX_FLAGS,
> > val &
> > ~PCI_MSIX_FLAGS_ENABLE);
> >
> > - qpci_iounmap(dev, dev->msix_table);
> > - qpci_iounmap(dev, dev->msix_pba);
> > + qpci_iounmap(dev, dev->msix_table_bar);
> > + qpci_iounmap(dev, dev->msix_pba_bar);
> > dev->msix_enabled = 0;
> > - dev->msix_table = NULL;
> > - dev->msix_pba = NULL;
> > + memset(&dev->msix_table_bar, 0, sizeof(dev->msix_table_bar));
> > + memset(&dev->msix_pba_bar, 0, sizeof(dev->msix_pba_bar));
> > + dev->msix_table_off = 0;
> > + dev->msix_pba_off = 0;
> > }
> >
> > bool qpci_msix_pending(QPCIDevice *dev, uint16_t entry)
> > {
> > uint32_t pba_entry;
> > uint8_t bit_n = entry % 32;
> > - void *addr = dev->msix_pba + (entry / 32) * PCI_MSIX_ENTRY_SIZE / 4;
> > + uint64_t off = (entry / 32) * PCI_MSIX_ENTRY_SIZE / 4;
> >
> > g_assert(dev->msix_enabled);
> > - pba_entry = qpci_io_readl(dev, addr);
> > - qpci_io_writel(dev, addr, pba_entry & ~(1 << bit_n));
> > + pba_entry = qpci_io_readl(dev, dev->msix_pba_bar, dev->msix_pba_off +
> > off);
> > + qpci_io_writel(dev, dev->msix_pba_bar, dev->msix_pba_off + off,
> > + pba_entry & ~(1 << bit_n));
> > return (pba_entry & (1 << bit_n)) != 0;
> > }
> >
> > @@ -164,7 +164,7 @@ bool qpci_msix_masked(QPCIDevice *dev, uint16_t entry)
> > {
> > uint8_t addr;
> > uint16_t val;
> > - void *vector_addr = dev->msix_table + (entry * PCI_MSIX_ENTRY_SIZE);
> > + uint64_t vector_off = dev->msix_table_off + entry *
> > PCI_MSIX_ENTRY_SIZE;
> >
> > g_assert(dev->msix_enabled);
> > addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
> > @@ -174,8 +174,9 @@ bool qpci_msix_masked(QPCIDevice *dev, uint16_t entry)
> > if (val & PCI_MSIX_FLAGS_MASKALL) {
> > return true;
> > } else {
> > - return (qpci_io_readl(dev, vector_addr +
> > PCI_MSIX_ENTRY_VECTOR_CTRL)
> > - & PCI_MSIX_ENTRY_CTRL_MASKBIT)
> > != 0;
> > + return (qpci_io_readl(dev, dev->msix_table_bar,
> > + vector_off + PCI_MSIX_ENTRY_VECTOR_CTRL)
> > + & PCI_MSIX_ENTRY_CTRL_MASKBIT) != 0;
> > }
> > }
> >
> > @@ -222,104 +223,93 @@ void qpci_config_writel(QPCIDevice *dev, uint8_t
> > offset, uint32_t value)
> > dev->bus->config_writel(dev->bus, dev->devfn, offset, value);
> > }
> >
> > -
> > -uint8_t qpci_io_readb(QPCIDevice *dev, void *data)
> > +uint8_t qpci_io_readb(QPCIDevice *dev, QPCIBar token, uint64_t off)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - if (addr < QPCI_PIO_LIMIT) {
> > - return dev->bus->pio_readb(dev->bus, addr);
> > + if (token.addr < QPCI_PIO_LIMIT) {
> > + return dev->bus->pio_readb(dev->bus, token.addr + off);
> > } else {
> > uint8_t val;
> > - dev->bus->memread(dev->bus, addr, &val, sizeof(val));
> > + dev->bus->memread(dev->bus, token.addr + off, &val, sizeof(val));
> > return val;
> > }
> > }
> >
> > -uint16_t qpci_io_readw(QPCIDevice *dev, void *data)
> > +uint16_t qpci_io_readw(QPCIDevice *dev, QPCIBar token, uint64_t off)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - if (addr < QPCI_PIO_LIMIT) {
> > - return dev->bus->pio_readw(dev->bus, addr);
> > + if (token.addr < QPCI_PIO_LIMIT) {
> > + return dev->bus->pio_readw(dev->bus, token.addr + off);
> > } else {
> > uint16_t val;
> > - dev->bus->memread(dev->bus, addr, &val, sizeof(val));
> > + dev->bus->memread(dev->bus, token.addr + off, &val, sizeof(val));
> > return le16_to_cpu(val);
> > }
> > }
> >
> > -uint32_t qpci_io_readl(QPCIDevice *dev, void *data)
> > +uint32_t qpci_io_readl(QPCIDevice *dev, QPCIBar token, uint64_t off)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - if (addr < QPCI_PIO_LIMIT) {
> > - return dev->bus->pio_readl(dev->bus, addr);
> > + if (token.addr < QPCI_PIO_LIMIT) {
> > + return dev->bus->pio_readl(dev->bus, token.addr + off);
> > } else {
> > uint32_t val;
> > - dev->bus->memread(dev->bus, addr, &val, sizeof(val));
> > + dev->bus->memread(dev->bus, token.addr + off, &val, sizeof(val));
> > return le32_to_cpu(val);
> > }
> > }
> >
> > -void qpci_io_writeb(QPCIDevice *dev, void *data, uint8_t value)
> > +void qpci_io_writeb(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + uint8_t value)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - if (addr < QPCI_PIO_LIMIT) {
> > - dev->bus->pio_writeb(dev->bus, addr, value);
> > + if (token.addr < QPCI_PIO_LIMIT) {
> > + dev->bus->pio_writeb(dev->bus, token.addr + off, value);
> > } else {
> > - dev->bus->memwrite(dev->bus, addr, &value, sizeof(value));
> > + dev->bus->memwrite(dev->bus, token.addr + off, &value,
> > sizeof(value));
> > }
> > }
> >
> > -void qpci_io_writew(QPCIDevice *dev, void *data, uint16_t value)
> > +void qpci_io_writew(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + uint16_t value)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - if (addr < QPCI_PIO_LIMIT) {
> > - dev->bus->pio_writew(dev->bus, addr, value);
> > + if (token.addr < QPCI_PIO_LIMIT) {
> > + dev->bus->pio_writew(dev->bus, token.addr + off, value);
> > } else {
> > value = cpu_to_le16(value);
> > - dev->bus->memwrite(dev->bus, addr, &value, sizeof(value));
> > + dev->bus->memwrite(dev->bus, token.addr + off, &value,
> > sizeof(value));
> > }
> > }
> >
> > -void qpci_io_writel(QPCIDevice *dev, void *data, uint32_t value)
> > +void qpci_io_writel(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + uint32_t value)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - if (addr < QPCI_PIO_LIMIT) {
> > - dev->bus->pio_writel(dev->bus, addr, value);
> > + if (token.addr < QPCI_PIO_LIMIT) {
> > + dev->bus->pio_writel(dev->bus, token.addr + off, value);
> > } else {
> > value = cpu_to_le32(value);
> > - dev->bus->memwrite(dev->bus, addr, &value, sizeof(value));
> > + dev->bus->memwrite(dev->bus, token.addr + off, &value,
> > sizeof(value));
> > }
> > }
> >
> > -void qpci_memread(QPCIDevice *dev, void *data, void *buf, size_t len)
> > +void qpci_memread(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + void *buf, size_t len)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - g_assert(addr >= QPCI_PIO_LIMIT);
> > - dev->bus->memread(dev->bus, addr, buf, len);
> > + g_assert(token.addr >= QPCI_PIO_LIMIT);
> > + dev->bus->memread(dev->bus, token.addr + off, buf, len);
> > }
> >
> > -void qpci_memwrite(QPCIDevice *dev, void *data, const void *buf, size_t
> > len)
> > +void qpci_memwrite(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + const void *buf, size_t len)
> > {
> > - uintptr_t addr = (uintptr_t)data;
> > -
> > - g_assert(addr >= QPCI_PIO_LIMIT);
> > - dev->bus->memwrite(dev->bus, addr, buf, len);
> > + g_assert(token.addr >= QPCI_PIO_LIMIT);
> > + dev->bus->memwrite(dev->bus, token.addr + off, buf, len);
> > }
> >
> > -void *qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr)
> > +QPCIBar qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr)
> > {
> > QPCIBus *bus = dev->bus;
> > static const int bar_reg_map[] = {
> > PCI_BASE_ADDRESS_0, PCI_BASE_ADDRESS_1, PCI_BASE_ADDRESS_2,
> > PCI_BASE_ADDRESS_3, PCI_BASE_ADDRESS_4, PCI_BASE_ADDRESS_5,
> > };
> > + QPCIBar bar;
> > int bar_reg;
> > uint32_t addr, size;
> > uint32_t io_type;
> > @@ -366,10 +356,11 @@ void *qpci_iomap(QPCIDevice *dev, int barno, uint64_t
> > *sizeptr)
> > qpci_config_writel(dev, bar_reg, loc);
> > }
> >
> > - return (void *)(uintptr_t)loc;
> > + bar.addr = loc;
> > + return bar;
> > }
> >
> > -void qpci_iounmap(QPCIDevice *dev, void *data)
> > +void qpci_iounmap(QPCIDevice *dev, QPCIBar bar)
> > {
> > /* FIXME */
> > }
> > diff --git a/tests/libqos/pci.h b/tests/libqos/pci.h
> > index 59fa3da..40b277c 100644
> > --- a/tests/libqos/pci.h
> > +++ b/tests/libqos/pci.h
> > @@ -21,6 +21,7 @@
> >
> > typedef struct QPCIDevice QPCIDevice;
> > typedef struct QPCIBus QPCIBus;
> > +typedef struct QPCIBar QPCIBar;
> >
> > struct QPCIBus {
> > uint8_t (*pio_readb)(QPCIBus *bus, uint32_t addr);
> > @@ -49,13 +50,17 @@ struct QPCIBus {
> > uint64_t mmio_alloc_ptr, mmio_limit;
> > };
> >
> > +struct QPCIBar {
> > + uint64_t addr;
> > +};
> > +
> > struct QPCIDevice
> > {
> > QPCIBus *bus;
> > int devfn;
> > bool msix_enabled;
> > - void *msix_table;
> > - void *msix_pba;
> > + QPCIBar msix_table_bar, msix_pba_bar;
> > + uint64_t msix_table_off, msix_pba_off;
> > };
> >
> > void qpci_device_foreach(QPCIBus *bus, int vendor_id, int device_id,
> > @@ -79,19 +84,23 @@ void qpci_config_writeb(QPCIDevice *dev, uint8_t
> > offset, uint8_t value);
> > void qpci_config_writew(QPCIDevice *dev, uint8_t offset, uint16_t value);
> > void qpci_config_writel(QPCIDevice *dev, uint8_t offset, uint32_t value);
> >
> > -uint8_t qpci_io_readb(QPCIDevice *dev, void *data);
> > -uint16_t qpci_io_readw(QPCIDevice *dev, void *data);
> > -uint32_t qpci_io_readl(QPCIDevice *dev, void *data);
> > -
> > -void qpci_io_writeb(QPCIDevice *dev, void *data, uint8_t value);
> > -void qpci_io_writew(QPCIDevice *dev, void *data, uint16_t value);
> > -void qpci_io_writel(QPCIDevice *dev, void *data, uint32_t value);
> > -
> > -void qpci_memread(QPCIDevice *bus, void *data, void *buf, size_t len);
> > -void qpci_memwrite(QPCIDevice *bus, void *data, const void *buf, size_t
> > len);
> > -
> > -void *qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr);
> > -void qpci_iounmap(QPCIDevice *dev, void *data);
> > +uint8_t qpci_io_readb(QPCIDevice *dev, QPCIBar token, uint64_t off);
> > +uint16_t qpci_io_readw(QPCIDevice *dev, QPCIBar token, uint64_t off);
> > +uint32_t qpci_io_readl(QPCIDevice *dev, QPCIBar token, uint64_t off);
> > +
> > +void qpci_io_writeb(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + uint8_t value);
> > +void qpci_io_writew(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + uint16_t value);
> > +void qpci_io_writel(QPCIDevice *dev, QPCIBar token, uint64_t off,
> > + uint32_t value);
> > +
> > +void qpci_memread(QPCIDevice *bus, QPCIBar token, uint64_t off,
> > + void *buf, size_t len);
> > +void qpci_memwrite(QPCIDevice *bus, QPCIBar token, uint64_t off,
> > + const void *buf, size_t len);
> > +QPCIBar qpci_iomap(QPCIDevice *dev, int barno, uint64_t *sizeptr);
> > +void qpci_iounmap(QPCIDevice *dev, QPCIBar addr);
> >
> > void qpci_plug_device_test(const char *driver, const char *id,
> > uint8_t slot, const char *opts);
> > diff --git a/tests/libqos/usb.c b/tests/libqos/usb.c
> > index f794d92..72d7a96 100644
> > --- a/tests/libqos/usb.c
> > +++ b/tests/libqos/usb.c
> > @@ -21,14 +21,12 @@ void qusb_pci_init_one(QPCIBus *pcibus, struct qhc *hc,
> > uint32_t devfn, int bar)
> > hc->dev = qpci_device_find(pcibus, devfn);
> > g_assert(hc->dev != NULL);
> > qpci_device_enable(hc->dev);
> > - hc->base = qpci_iomap(hc->dev, bar, NULL);
> > - g_assert(hc->base != NULL);
> > + hc->bar = qpci_iomap(hc->dev, bar, NULL);
> > }
> >
> > void uhci_port_test(struct qhc *hc, int port, uint16_t expect)
> > {
> > - void *addr = hc->base + 0x10 + 2 * port;
> > - uint16_t value = qpci_io_readw(hc->dev, addr);
> > + uint16_t value = qpci_io_readw(hc->dev, hc->bar, 0x10 + 2 * port);
> > uint16_t mask = ~(UHCI_PORT_WRITE_CLEAR | UHCI_PORT_RSVD1);
> >
> > g_assert((value & mask) == (expect & mask));
> > diff --git a/tests/libqos/usb.h b/tests/libqos/usb.h
> > index 8fe5687..423dcfd 100644
> > --- a/tests/libqos/usb.h
> > +++ b/tests/libqos/usb.h
> > @@ -5,7 +5,7 @@
> >
> > struct qhc {
> > QPCIDevice *dev;
> > - void *base;
> > + QPCIBar bar;
> > };
> >
> > void qusb_pci_init_one(QPCIBus *pcibus, struct qhc *hc,
> > diff --git a/tests/libqos/virtio-pci.c b/tests/libqos/virtio-pci.c
> > index 8037724..5b78d30 100644
> > --- a/tests/libqos/virtio-pci.c
> > +++ b/tests/libqos/virtio-pci.c
> > @@ -65,22 +65,22 @@ static void qvirtio_pci_assign_device(QVirtioDevice *d,
> > void *data)
> > static uint8_t qvirtio_pci_config_readb(QVirtioDevice *d, uint64_t off)
> > {
> > QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
> > - void *base = dev->addr +
> > VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled);
> > - return qpci_io_readb(dev->pdev, base + off);
> > + uint64_t base = VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled);
> > + return qpci_io_readb(dev->pdev, dev->bar, base + off);
> > }
> >
> > static uint16_t qvirtio_pci_config_readw(QVirtioDevice *d, uint64_t off)
> > {
> > QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
> > - void *base = dev->addr +
> > VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled);
> > - return qpci_io_readw(dev->pdev, base + off);
> > + uint64_t base = VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled);
> > + return qpci_io_readw(dev->pdev, dev->bar, base + off);
> > }
> >
> > static uint32_t qvirtio_pci_config_readl(QVirtioDevice *d, uint64_t off)
> > {
> > QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
> > - void *base = dev->addr +
> > VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled);
> > - return qpci_io_readl(dev->pdev, base + off);
> > + uint64_t base = VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled);
> > + return qpci_io_readl(dev->pdev, dev->bar, base + off);
> > }
> >
> > static uint64_t qvirtio_pci_config_readq(QVirtioDevice *d, uint64_t off)
> > @@ -88,17 +88,17 @@ static uint64_t qvirtio_pci_config_readq(QVirtioDevice
> > *d, uint64_t off)
> > QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
> > int i;
> > uint64_t u64 = 0;
> > - void *base = dev->addr +
> > VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled);
> > + uint64_t base = VIRTIO_PCI_CONFIG_OFF(dev->pdev->msix_enabled) + off;
> >
> > if (target_big_endian()) {
> > for (i = 0; i < 8; ++i) {
> > - u64 |= (uint64_t)qpci_io_readb(dev->pdev,
> > - base + off + i) << (7 - i) * 8;
> > + u64 |= (uint64_t)qpci_io_readb(dev->pdev, dev->bar,
> > + base + i) << (7 - i) * 8;
> > }
> > } else {
> > for (i = 0; i < 8; ++i) {
> > - u64 |= (uint64_t)qpci_io_readb(dev->pdev,
> > - base + off + i) << i * 8;
> > + u64 |= (uint64_t)qpci_io_readb(dev->pdev, dev->bar,
> > + base + i) << i * 8;
> > }
>
> You should update this part with qpci_memread() + bswap64()
Good idea. Well, actually, I thinl I'll add 64-bit PCI accessors.
I'm sure we'll want them in other places soon enough.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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