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Commit b2ce1ea4 authored by Rusty Russell's avatar Rusty Russell
Browse files

tools/lguest: rename virtio_pci_cfg_cap field to match spec. 



The next patch will insert many quotes from the virtio 1.0 spec; they
make most sense if we copy the spec.

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent 53aceb49

tools/lguest/lguest.c

+9 −8
Original line number Diff line number Diff line
@@ -126,7 +126,7 @@ static struct device_list devices; 


struct virtio_pci_cfg_cap {

	struct virtio_pci_cap cap;

	u32 window; /* Data for BAR access. */

	u32 pci_cfg_data; /* Data for BAR access. */

};



struct virtio_pci_mmio {
@@ -1301,7 +1301,7 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) 
		 */

		iowrite(portoff, val, mask, &d->config_words[reg]);

		return true;

	} else if (&d->config_words[reg] == &d->config.cfg_access.window) {

	} else if (&d->config_words[reg] == &d->config.cfg_access.pci_cfg_data) {

		u32 write_mask;



		/* Must be bar 0 */
@@ -1309,7 +1309,7 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) 
			return false;



		/* First copy what they wrote into the window */

		iowrite(portoff, val, mask, &d->config.cfg_access.window);

		iowrite(portoff, val, mask, &d->config.cfg_access.pci_cfg_data);



		/*

		 * Now emulate a write.  The mask we use is set by
@@ -1317,13 +1317,14 @@ static bool pci_data_iowrite(u16 port, u32 mask, u32 val) 
		 */

		write_mask = (1ULL<<(8*d->config.cfg_access.cap.length)) - 1;

		verbose("Window writing %#x/%#x to bar %u, offset %u len %u\n",

			d->config.cfg_access.window, write_mask,

			d->config.cfg_access.pci_cfg_data, write_mask,

			d->config.cfg_access.cap.bar,

			d->config.cfg_access.cap.offset,

			d->config.cfg_access.cap.length);



		emulate_mmio_write(d, d->config.cfg_access.cap.offset,

				   d->config.cfg_access.window, write_mask);

				   d->config.cfg_access.pci_cfg_data,

				   write_mask);

		return true;

	}
@@ -1342,7 +1343,7 @@ static void pci_data_ioread(u16 port, u32 mask, u32 *val) 
		return;



	/* Read through the PCI MMIO access window is special */

	if (&d->config_words[reg] == &d->config.cfg_access.window) {

	if (&d->config_words[reg] == &d->config.cfg_access.pci_cfg_data) {

		u32 read_mask;



		/* Must be bar 0 */
@@ -1357,12 +1358,12 @@ static void pci_data_ioread(u16 port, u32 mask, u32 *val) 
		 * len, *not* this read!

		 */

		read_mask = (1ULL<<(8*d->config.cfg_access.cap.length))-1;

		d->config.cfg_access.window

		d->config.cfg_access.pci_cfg_data

			= emulate_mmio_read(d,

					    d->config.cfg_access.cap.offset,

					    read_mask);

		verbose("Window read %#x/%#x from bar %u, offset %u len %u\n",

			d->config.cfg_access.window, read_mask,

			d->config.cfg_access.pci_cfg_data, read_mask,

			d->config.cfg_access.cap.bar,

			d->config.cfg_access.cap.offset,

			d->config.cfg_access.cap.length);